Emergency lights are an important feature of all buildings and businesses. In the event of a sudden power outage or catastrophic event, the emergency light can be turned on to provide alternative power or help guide the customer out of the building to ensure safety. However, there are different types of emergency lights that differ in power and light source. Here, the Emergency Light Manufacturer | Yuyao Linsheng Electrical Company provides explanations of different types of emergency lights.
Ongoing: With continuous emergency lighting, the emergency lighting source or luminaire operates on a separate source from the main source. Continuous lights will only occur in an emergency. Since the continuous lamp is powered separately from the main lamp, this helps to minimize the possibility of emergency lamp power failure.
Maintenance: In the maintenance of the power supply, the emergency light is the same as the standard light. However, in the event of a power outage or emergency, the power is switched to the battery output.
Non-maintenance: In non-maintenance emergency lights, the lights are only turned on in an emergency, which means they are not lights used every day. The luminaire operates on a battery that is charged by the mains.
Central battery: As the name implies, the central battery is used, and the power of all the lamps is stored in a central location and fed back to the emergency light in an emergency. The luminaires used can be either maintenance or non-maintenance. In the absence of an emergency, the LED indicator will indicate that the emergency light is charged. In an emergency, the LED will turn off and the fixture will turn on.
If you are interested in learning more about emergency lighting and other lighting equipment, please visit the message Emergency Light Manufacturer | Yuyao Linsheng Electrical Company : https://www.linsheng.com
Ongoing: With continuous emergency lighting, the emergency lighting source or luminaire operates on a separate source from the main source. Continuous lights will only occur in an emergency. Since the continuous lamp is powered separately from the main lamp, this helps to minimize the possibility of emergency lamp power failure.
Maintenance: In the maintenance of the power supply, the emergency light is the same as the standard light. However, in the event of a power outage or emergency, the power is switched to the battery output.
Non-maintenance: In non-maintenance emergency lights, the lights are only turned on in an emergency, which means they are not lights used every day. The luminaire operates on a battery that is charged by the mains.
Central battery: As the name implies, the central battery is used, and the power of all the lamps is stored in a central location and fed back to the emergency light in an emergency. The luminaires used can be either maintenance or non-maintenance. In the absence of an emergency, the LED indicator will indicate that the emergency light is charged. In an emergency, the LED will turn off and the fixture will turn on.
If you are interested in learning more about emergency lighting and other lighting equipment, please visit the message Emergency Light Manufacturer | Yuyao Linsheng Electrical Company : https://www.linsheng.com
1, efficient inflation:
The speed of inflation is the first condition to measure the performance of a car pump. A tire that is completely flattened, can the tire pressure be quickly hit to normal value, and the outlet flow rate should be at least 30L/Min. To ensure efficient inflation, in addition to the power, it is necessary to ensure the quality of the motor. The wind-powered car air pump T800 is equipped with lighting and pressure gauges, which are quick to breathe and easy to carry and store. The self-contained tire pressure gauge is convenient for the tire pressure detection at any time, and can be quickly replenished when the tire pressure is insufficient. Pressure relief function.
2, high heat dissipation:
High-quality car air pump needs to have good heat dissipation, and this performance is determined by the material selected by the machine. The heat-generating component is made of a high-heat-dissipating material, which accelerates heat dissipation and effectively protects the motor. Among the components of the pump, the heat dissipation material of the cylinder is particularly important. There are many types of vehicle air pump on the market, and the materials of the selected heat-dissipating cylinders are also different. There are aluminum alloy, stainless steel, aluminum alloy die-casting, chrome plating, anode aluminum alloy cylinders, etc., depending on the material, the heat dissipation performance is also very different. At present, the ideal heat dissipation cylinder is an anode aluminum alloy cylinder. The anodized aluminum or alloy not only improves hardness, corrosion resistance and wear resistance, but also has good heat dissipation and insulation properties.
3, safe and reliable:
After all, the vehicle air pump is a kind of pressure machine, so it is necessary to ensure the safety and reliability of the product. Oil-free design, maintenance-free air pump has higher safety details, environmental protection and durability, and safer use. The vehicle air pump wants to use safety, in addition to the safety of the air pump itself, it is also necessary to consider the safety when using the car battery. The car air pump using the cigarette lighter should be equipped with online insurance, which can effectively protect the car circuit system and ensure safe use; if the battery clip is configured, it is more professional and safer.
4, strong motor:
The power of the air pump comes from the motor, so the quality of the pump determines the quality of the pump. The excellent motor not only runs fast to ensure the inflation speed, but also effectively reduces the friction noise. High-quality motors should be made of pure copper high-temperature enamelled copper wire, which can reduce the large vibration of the machine during use, ensure quiet operation, ensure long-lasting working time, and effectively resist oxidation, breakage and anti-aging. To ensure maximum power output of the motor and a longer service life.
5, functional diversification:
A high-quality car air pump can not only be used for tire inflation, but should have a variety of functions, suitable for a variety of places.
1With high-precision tire pressure gauge, it is convenient to grasp the tire pressure at any time;
2 high-efficiency LED work lights, convenient for night inflatable lighting or use;
3 configuration of high quality inflatable tube and pure copper nozzle;
4 national standard power cord, cold and high temperature resistance;
5 damping rubber base, effectively reducing working noise;
More than 6 kinds of accessories, easy to store and widely used.
6, easy to carry and storage:
Since it is a vehicle-mounted air pump, it must be light in weight and small in size, so as to ensure that it is easy to carry and store, and does not cause excessive load on the vehicle.
Linsheng Electrical Company car pump is a good choice for you: https://www.linsheng.com
The speed of inflation is the first condition to measure the performance of a car pump. A tire that is completely flattened, can the tire pressure be quickly hit to normal value, and the outlet flow rate should be at least 30L/Min. To ensure efficient inflation, in addition to the power, it is necessary to ensure the quality of the motor. The wind-powered car air pump T800 is equipped with lighting and pressure gauges, which are quick to breathe and easy to carry and store. The self-contained tire pressure gauge is convenient for the tire pressure detection at any time, and can be quickly replenished when the tire pressure is insufficient. Pressure relief function.
2, high heat dissipation:
High-quality car air pump needs to have good heat dissipation, and this performance is determined by the material selected by the machine. The heat-generating component is made of a high-heat-dissipating material, which accelerates heat dissipation and effectively protects the motor. Among the components of the pump, the heat dissipation material of the cylinder is particularly important. There are many types of vehicle air pump on the market, and the materials of the selected heat-dissipating cylinders are also different. There are aluminum alloy, stainless steel, aluminum alloy die-casting, chrome plating, anode aluminum alloy cylinders, etc., depending on the material, the heat dissipation performance is also very different. At present, the ideal heat dissipation cylinder is an anode aluminum alloy cylinder. The anodized aluminum or alloy not only improves hardness, corrosion resistance and wear resistance, but also has good heat dissipation and insulation properties.
3, safe and reliable:
After all, the vehicle air pump is a kind of pressure machine, so it is necessary to ensure the safety and reliability of the product. Oil-free design, maintenance-free air pump has higher safety details, environmental protection and durability, and safer use. The vehicle air pump wants to use safety, in addition to the safety of the air pump itself, it is also necessary to consider the safety when using the car battery. The car air pump using the cigarette lighter should be equipped with online insurance, which can effectively protect the car circuit system and ensure safe use; if the battery clip is configured, it is more professional and safer.
4, strong motor:
The power of the air pump comes from the motor, so the quality of the pump determines the quality of the pump. The excellent motor not only runs fast to ensure the inflation speed, but also effectively reduces the friction noise. High-quality motors should be made of pure copper high-temperature enamelled copper wire, which can reduce the large vibration of the machine during use, ensure quiet operation, ensure long-lasting working time, and effectively resist oxidation, breakage and anti-aging. To ensure maximum power output of the motor and a longer service life.
5, functional diversification:
A high-quality car air pump can not only be used for tire inflation, but should have a variety of functions, suitable for a variety of places.
1With high-precision tire pressure gauge, it is convenient to grasp the tire pressure at any time;
2 high-efficiency LED work lights, convenient for night inflatable lighting or use;
3 configuration of high quality inflatable tube and pure copper nozzle;
4 national standard power cord, cold and high temperature resistance;
5 damping rubber base, effectively reducing working noise;
More than 6 kinds of accessories, easy to store and widely used.
6, easy to carry and storage:
Since it is a vehicle-mounted air pump, it must be light in weight and small in size, so as to ensure that it is easy to carry and store, and does not cause excessive load on the vehicle.
Linsheng Electrical Company car pump is a good choice for you: https://www.linsheng.com
When you are using a car, you will inevitably use a car air pump to pump the tires or check the tire pressure and other key issues. So what should you pay attention to when using the car air pump? Linsheng Electrical Company explained. https://www.linsheng.com
1. Every time you use the car air pump, you must use it after starting the vehicle. If it is turned on at startup, the battery will be fed, which will hurt the car battery.
2, car air pump because the power is relatively small, so the inflation will be slower, many car owners will use the car air pump for a long time, which is easy to cause the pump to be damaged due to overheating, the correct way is to use a few minutes to stop the pump for proper cooling .
3. Many vehicles are equipped with a tire pressure alarm system, but there is no tire pressure value for each tire. At this time, do not blindly use the car air pump directly. You can first measure the air pressure of each tire with an air pump, and then select the air pressure. .
4, car air pump is not suitable for inflating large off-road vehicles, large off-road vehicles have high tire pressure, it is difficult to use the car air pump to flush the tires of off-road vehicles.
5, many car owners will blindly use the air pump, the air pump is actually only used for temporary emergency, if the tire pressure is often unstable, it must be checked in time to prevent vehicle problems.
6. The line of the car air pump is very thin. If it is not used or stored improperly, it may cause the line to break. Therefore, the line must be well used when it is used.
1. Every time you use the car air pump, you must use it after starting the vehicle. If it is turned on at startup, the battery will be fed, which will hurt the car battery.
2, car air pump because the power is relatively small, so the inflation will be slower, many car owners will use the car air pump for a long time, which is easy to cause the pump to be damaged due to overheating, the correct way is to use a few minutes to stop the pump for proper cooling .
3. Many vehicles are equipped with a tire pressure alarm system, but there is no tire pressure value for each tire. At this time, do not blindly use the car air pump directly. You can first measure the air pressure of each tire with an air pump, and then select the air pressure. .
4, car air pump is not suitable for inflating large off-road vehicles, large off-road vehicles have high tire pressure, it is difficult to use the car air pump to flush the tires of off-road vehicles.
5, many car owners will blindly use the air pump, the air pump is actually only used for temporary emergency, if the tire pressure is often unstable, it must be checked in time to prevent vehicle problems.
6. The line of the car air pump is very thin. If it is not used or stored improperly, it may cause the line to break. Therefore, the line must be well used when it is used.
What is a jump starter?
Linsheng Electrical Company Description: The jumper provides an instant power signal and can start the battery. These devices have significantly higher outputs but lack consistency than chargers. This is why the industry has a term “peak”. It marks the highest amperage that a particular unit can output. However, this does not mean that it consistently provides maximum output. In fact, most manufacturers point to the number of "cranks" within peak power. In most cases, the number of cranks depends on the quality of the device battery.
The jumper does not rely on household electricity, but a dedicated battery. As expected, the quality of the component has a huge impact on the overall price of the product. In addition, the jumper can be used for a variety of other things, and the charger only performs one operation. Many modern starters are equipped with quite a few additional features such as LED, USB, Micro USB and more. So you can use them as an urgent backup of almost any smart device you have. It is also very convenient because most models have a visually appealing design and small size. People can put their equipment in their car’s glove box at any time and use it when needed, especially if you are on the highway, traveling or camping.
Advantages and disadvantages of the jump starter
benefit
Compactness and convenience are the two main aspects most people look for in these units. Some models are small enough to fit in a pocket, acting as an alternative power station, charging smart devices, illuminating dim areas, and more. In fact, anything that requires a 12V connection can be charged using a regular jumper. Starting a car can almost immediately get you back on the road, and you can’t count on using a charger. The high output makes the battery immediately available, which is a big benefit compared to waiting a few hours, especially if you are in a hurry. Most people think that these devices are boosters, which is a very close representation of their entire purpose.
Disadvantage
Although they are portable, they are definitely not lightweight. Some models tend to be very heavy, which can be a burden, especially if you are on the go. On the other hand, some models are very lightweight, but lack output power and additional features. The size of the jumper battery is proportional to the power output. This means that the more powerful the model, the more cumbersome it is. If you have a particularly demanding car, you may have to choose a bulky solution, which is not always pleasant. It all depends on personal preference, but most people prefer compact units rather than bulky equipment. While additional features come in handy, they also tend to consume a lot of power, which reduces peak amperage. https://www.linsheng.com
Linsheng Electrical Company Description: The jumper provides an instant power signal and can start the battery. These devices have significantly higher outputs but lack consistency than chargers. This is why the industry has a term “peak”. It marks the highest amperage that a particular unit can output. However, this does not mean that it consistently provides maximum output. In fact, most manufacturers point to the number of "cranks" within peak power. In most cases, the number of cranks depends on the quality of the device battery.
The jumper does not rely on household electricity, but a dedicated battery. As expected, the quality of the component has a huge impact on the overall price of the product. In addition, the jumper can be used for a variety of other things, and the charger only performs one operation. Many modern starters are equipped with quite a few additional features such as LED, USB, Micro USB and more. So you can use them as an urgent backup of almost any smart device you have. It is also very convenient because most models have a visually appealing design and small size. People can put their equipment in their car’s glove box at any time and use it when needed, especially if you are on the highway, traveling or camping.
Advantages and disadvantages of the jump starter
benefit
Compactness and convenience are the two main aspects most people look for in these units. Some models are small enough to fit in a pocket, acting as an alternative power station, charging smart devices, illuminating dim areas, and more. In fact, anything that requires a 12V connection can be charged using a regular jumper. Starting a car can almost immediately get you back on the road, and you can’t count on using a charger. The high output makes the battery immediately available, which is a big benefit compared to waiting a few hours, especially if you are in a hurry. Most people think that these devices are boosters, which is a very close representation of their entire purpose.
Disadvantage
Although they are portable, they are definitely not lightweight. Some models tend to be very heavy, which can be a burden, especially if you are on the go. On the other hand, some models are very lightweight, but lack output power and additional features. The size of the jumper battery is proportional to the power output. This means that the more powerful the model, the more cumbersome it is. If you have a particularly demanding car, you may have to choose a bulky solution, which is not always pleasant. It all depends on personal preference, but most people prefer compact units rather than bulky equipment. While additional features come in handy, they also tend to consume a lot of power, which reduces peak amperage. https://www.linsheng.com
Most emergency lights installed in an enterprise are simple lighting devices that contain small batteries. The device is connected to the building’s power source to provide a constant charge to the battery. In the event of a power failure, the circuitry in the luminaire activates the light so that the passenger can see the building leaving. Most emergency lights are designed for a minimum of ninety (90) minutes of battery power required by the code.
Emergency light and exit sign
The internally illuminated exit sign operates in much the same way as the emergency light. Because they are always there, many of them have two sets of bulbs. One group is usually open and operates at 110 volts building power. The second group is only activated in the event of a power failure and is a low voltage bulb that operates only on the battery. Therefore, during a power failure, the exit sign that appears to be working properly may not work at all because the low voltage bulb has burned out.
In some larger buildings, emergency generators provide emergency power for exit signs and emergency lights. Emergency lighting tests in these facilities are usually performed while the generator is being tested, usually by an electrical or mechanical contractor or a full-time building maintenance person.
What type of testing does the fire code require?
The fire code requires that the emergency light or the illuminated exit sign be checked at least once a month. The test must include a thirty-second test of the lamp.
An annual test is also required and the lamp should be operated for at least ninety (90) minutes under emergency power. A written record of the record test must be retained and reviewed by the Los Angeles National Fire Brigade or your insurance company.
How can I test?
Most emergency lights or exit signs have a small "press test" button somewhere in the housing. You can test the lamp and battery by pressing and holding this button for thirty seconds. This works fine if you have easy access to a small number of devices. The light should illuminate and maintain the same brightness level for a full 30 seconds. If the light dims immediately, or if some of the bulbs do not work, you should contact us to replace the bulb and/or battery in the fixture.
For the exit flag, you should also check that the flag is lit correctly in normal power mode. For a large number of devices or annual ninety (90) minute tests, a second option may be better. Find a circuit breaker or fuse that supplies power to the emergency light or exit sign. (If the electrician is not properly marked, you may need to contact an electrician.) Turn off the circuit breakers and observe the lights to determine if they are working during the 90-minute (annual) or 30-second (monthly) test.
CAUTION: If your computer or similar device is connected to the same circuit, you may want to make sure that the data is first saved on your computer or similar device.
Why do I need to test the bulb for 30 seconds?
The Emergency Light Manufacturers answers: Many defective batteries will hold enough power to fully illuminate the bulb for a few seconds, but they will quickly lose power. If you haven’t tested for thirty seconds, you may find that each month’s lights work, just find them in a matter of seconds when you need them. By testing the light for at least 30 seconds, you can be sure that the battery not only has this "surface charge." https://www.linsheng.com
Emergency light and exit sign
The internally illuminated exit sign operates in much the same way as the emergency light. Because they are always there, many of them have two sets of bulbs. One group is usually open and operates at 110 volts building power. The second group is only activated in the event of a power failure and is a low voltage bulb that operates only on the battery. Therefore, during a power failure, the exit sign that appears to be working properly may not work at all because the low voltage bulb has burned out.
In some larger buildings, emergency generators provide emergency power for exit signs and emergency lights. Emergency lighting tests in these facilities are usually performed while the generator is being tested, usually by an electrical or mechanical contractor or a full-time building maintenance person.
What type of testing does the fire code require?
The fire code requires that the emergency light or the illuminated exit sign be checked at least once a month. The test must include a thirty-second test of the lamp.
An annual test is also required and the lamp should be operated for at least ninety (90) minutes under emergency power. A written record of the record test must be retained and reviewed by the Los Angeles National Fire Brigade or your insurance company.
How can I test?
Most emergency lights or exit signs have a small "press test" button somewhere in the housing. You can test the lamp and battery by pressing and holding this button for thirty seconds. This works fine if you have easy access to a small number of devices. The light should illuminate and maintain the same brightness level for a full 30 seconds. If the light dims immediately, or if some of the bulbs do not work, you should contact us to replace the bulb and/or battery in the fixture.
For the exit flag, you should also check that the flag is lit correctly in normal power mode. For a large number of devices or annual ninety (90) minute tests, a second option may be better. Find a circuit breaker or fuse that supplies power to the emergency light or exit sign. (If the electrician is not properly marked, you may need to contact an electrician.) Turn off the circuit breakers and observe the lights to determine if they are working during the 90-minute (annual) or 30-second (monthly) test.
CAUTION: If your computer or similar device is connected to the same circuit, you may want to make sure that the data is first saved on your computer or similar device.
Why do I need to test the bulb for 30 seconds?
The Emergency Light Manufacturers answers: Many defective batteries will hold enough power to fully illuminate the bulb for a few seconds, but they will quickly lose power. If you haven’t tested for thirty seconds, you may find that each month’s lights work, just find them in a matter of seconds when you need them. By testing the light for at least 30 seconds, you can be sure that the battery not only has this "surface charge." https://www.linsheng.com
What should you pay attention to when using fire emergency lights? Emergency Light Manufacturer | Yuyao Linsheng Electrical Company Description:
1. You must read this manual carefully before use to allow the fire emergency light fixture to be connected to the market.
2. It is generally installed in stairwells, passages, exits, etc., and is not allowed to be installed in the open air.
3. The main power supply of this fire emergency light fixture should be controlled by separate switch, which is not affected by the power control switch of other fire emergency light fixtures and household appliances.
4. Fire emergency light lamp working voltage AC 220V50Hz, please pay attention to check the power supply voltage situation, such as the wrong connection of 380V three-phase electricity will burn the fire emergency light fixtures.
5. If the fire emergency light fixture is connected to the power indicator, the work is not normal. Immediately cut off the power supply and remove the fire emergency light fixture for maintenance.
6. The green indicator light is the main power indicator, and the red indicator light is the charging indicator. When the fault occurs, the yellow indicator light is on
https://www.linsheng.com
1. You must read this manual carefully before use to allow the fire emergency light fixture to be connected to the market.
2. It is generally installed in stairwells, passages, exits, etc., and is not allowed to be installed in the open air.
3. The main power supply of this fire emergency light fixture should be controlled by separate switch, which is not affected by the power control switch of other fire emergency light fixtures and household appliances.
4. Fire emergency light lamp working voltage AC 220V50Hz, please pay attention to check the power supply voltage situation, such as the wrong connection of 380V three-phase electricity will burn the fire emergency light fixtures.
5. If the fire emergency light fixture is connected to the power indicator, the work is not normal. Immediately cut off the power supply and remove the fire emergency light fixture for maintenance.
6. The green indicator light is the main power indicator, and the red indicator light is the charging indicator. When the fault occurs, the yellow indicator light is on
https://www.linsheng.com
In the maintenance of automotive air compressors, the overall maintenance focus is on the corresponding degree of operation, and the operation time is also determined in advance. The focus of routine maintenance is on routine inspections and care, and timely detection of faults and exclusion. The focus of regular maintenance is on inspection and maintenance during a fixed period of time. Yuyao Linsheng gave an introduction separately.
Overall maintenance
In the overall maintenance, when there are parts to be replaced, the air compressor should be turned off first, the accumulated pressure will be released, and the end caps, nuts and other components will be removed. When it is necessary to replace the oil during the running-in period, clean the oil return valve and replace the oil filter, it is necessary to pay attention to the operation time after the air compressor is operated for 500 hours for the first time. When the control line is inspected, it needs to be carried out 50 hours after the air compressor is turned on, and an inspection is required every six months.
Routine maintenance
The routine maintenance work includes the following steps: checking the working condition of the operating switch, checking whether the oil level of the compressor lubricating oil is normal, and ensuring sufficient oil quantity. Check the abnormal sound and oil leakage of the running unit to check if there is an alarm fault in the computer controller. In addition, the front and back surfaces of the air compressor surface and the surface of the cooler, especially the dust at the four corners and the blades of the fan, should be cleaned frequently to ensure the heat dissipation performance of the unit and prevent the unit from being corroded.
Regular maintenance
Regular maintenance includes monthly repairs, quarterly repairs, and half-year repairs. If necessary, a comprehensive overhaul is required.
The monthly repairs include: checking the air compressor exhaust temperature switch is good, measuring the quality of the lubricant to see if it deteriorates. Clean the dust inside the electric control box and inspect all the hoses for cracks and aging. Apply grease to the bearings of the motor every two months.
The main repairs include cleaning the air filter core and oil filter core and filtering the air compressor oil.
The half-year repairs are: cleaning and replacing the oil separator core, cleaning the air cooler and oil cooler. In the overhaul process, a comprehensive inspection and maintenance of the air compressor is required. This type of maintenance is generally used when the air compressor has been running for a long time or abnormal operating conditions. It includes cleaning of the motor, rotor and vane, replacement of damaged valve bodies and oil separator cores, and cleaning of the lubricating oil circulation system.
https://www.linsheng.com
Overall maintenance
In the overall maintenance, when there are parts to be replaced, the air compressor should be turned off first, the accumulated pressure will be released, and the end caps, nuts and other components will be removed. When it is necessary to replace the oil during the running-in period, clean the oil return valve and replace the oil filter, it is necessary to pay attention to the operation time after the air compressor is operated for 500 hours for the first time. When the control line is inspected, it needs to be carried out 50 hours after the air compressor is turned on, and an inspection is required every six months.
Routine maintenance
The routine maintenance work includes the following steps: checking the working condition of the operating switch, checking whether the oil level of the compressor lubricating oil is normal, and ensuring sufficient oil quantity. Check the abnormal sound and oil leakage of the running unit to check if there is an alarm fault in the computer controller. In addition, the front and back surfaces of the air compressor surface and the surface of the cooler, especially the dust at the four corners and the blades of the fan, should be cleaned frequently to ensure the heat dissipation performance of the unit and prevent the unit from being corroded.
Regular maintenance
Regular maintenance includes monthly repairs, quarterly repairs, and half-year repairs. If necessary, a comprehensive overhaul is required.
The monthly repairs include: checking the air compressor exhaust temperature switch is good, measuring the quality of the lubricant to see if it deteriorates. Clean the dust inside the electric control box and inspect all the hoses for cracks and aging. Apply grease to the bearings of the motor every two months.
The main repairs include cleaning the air filter core and oil filter core and filtering the air compressor oil.
The half-year repairs are: cleaning and replacing the oil separator core, cleaning the air cooler and oil cooler. In the overhaul process, a comprehensive inspection and maintenance of the air compressor is required. This type of maintenance is generally used when the air compressor has been running for a long time or abnormal operating conditions. It includes cleaning of the motor, rotor and vane, replacement of damaged valve bodies and oil separator cores, and cleaning of the lubricating oil circulation system.
https://www.linsheng.com
Emergency Light Manufacturers Note - The lighting principle of fire emergency lighting should comply with the following conditions:
According to the relevant provisions of the State, "Code for Fire Protection of Building Design" and "Code for Fire Protection Design of High-rise Civil Buildings", the installation specifications for fire emergency lighting should be installed in these areas:
1. Close the stairwell, smoke-proof stairwell and its front room, fire elevator and its front room;
2, power distribution room, fire control room, automatic generator room, fire pump room, smoke and smoke exhaust passage, battery room for fire and electricity, telephone main machine room and other rooms that still need to stay in the fire in the event of fire;
3. The auditorium, the exhibition hall with more than 1,500 square meters on each floor, the business hall, the studio with a building area of more than 200 square meters, the densely populated area or the basement with a building area of more than 300 square meters;
4. Fire emergency evacuation walkways in public buildings and inner walkways with a length of more than 20 meters;
5. For personnel-intensive entertainment venues or shopping malls, the recommendations for the density of lighting emergency lighting should be appropriately increased;
The installation location of fire emergency lighting is mostly above the fire safety exit door frame, or the building with large space should be equipped with fire emergency lighting on the top of each column. At the same time, it should cooperate with a certain number of fire emergency signs and other fire emergency lights. ;
The fire emergency sign lights are generally installed and installed above the fire emergency evacuation passage (mostly double-sided fire safety exit emergency sign lights), or above the door frame of the fire escape safety exit (the wall mounting method is mostly single-sided fire emergency sign light) );
The installation position of the fire emergency ceiling lamp is mostly the stairway corridor, the inner walkway of the public building leading to the safety exit, and it is installed close to the ceiling. Attention should also be paid to maintenance and maintenance;
In some public places, fire emergency underground buried lights and in-wall fire emergency evacuation lights shall be inspected according to requirements, and the emergency discharge time of the lamps shall be checked regularly to avoid details such as obstruction of the lamps by the objects;
In addition, it should be noted that: fire emergency safety passages, fire hydrant boxes, etc., should avoid the accumulation of debris, keep it open. https://www.linsheng.com
According to the relevant provisions of the State, "Code for Fire Protection of Building Design" and "Code for Fire Protection Design of High-rise Civil Buildings", the installation specifications for fire emergency lighting should be installed in these areas:
1. Close the stairwell, smoke-proof stairwell and its front room, fire elevator and its front room;
2, power distribution room, fire control room, automatic generator room, fire pump room, smoke and smoke exhaust passage, battery room for fire and electricity, telephone main machine room and other rooms that still need to stay in the fire in the event of fire;
3. The auditorium, the exhibition hall with more than 1,500 square meters on each floor, the business hall, the studio with a building area of more than 200 square meters, the densely populated area or the basement with a building area of more than 300 square meters;
4. Fire emergency evacuation walkways in public buildings and inner walkways with a length of more than 20 meters;
5. For personnel-intensive entertainment venues or shopping malls, the recommendations for the density of lighting emergency lighting should be appropriately increased;
The installation location of fire emergency lighting is mostly above the fire safety exit door frame, or the building with large space should be equipped with fire emergency lighting on the top of each column. At the same time, it should cooperate with a certain number of fire emergency signs and other fire emergency lights. ;
The fire emergency sign lights are generally installed and installed above the fire emergency evacuation passage (mostly double-sided fire safety exit emergency sign lights), or above the door frame of the fire escape safety exit (the wall mounting method is mostly single-sided fire emergency sign light) );
The installation position of the fire emergency ceiling lamp is mostly the stairway corridor, the inner walkway of the public building leading to the safety exit, and it is installed close to the ceiling. Attention should also be paid to maintenance and maintenance;
In some public places, fire emergency underground buried lights and in-wall fire emergency evacuation lights shall be inspected according to requirements, and the emergency discharge time of the lamps shall be checked regularly to avoid details such as obstruction of the lamps by the objects;
In addition, it should be noted that: fire emergency safety passages, fire hydrant boxes, etc., should avoid the accumulation of debris, keep it open. https://www.linsheng.com
1. What is emergency lighting?
Emergency lighting is lighting that illuminates in the event of a main power failure. The emergency lights are powered by a rechargeable backup battery, which is located in the emergency light or in the central battery position, and each emergency light is connected. Emergency lighting is a general term that is divided into emergency escape lighting and alternate lighting. Standby lighting is used to continue normal operation during a power outage, and since this is not a legal requirement, this guide does not cover it.
2. What is emergency ESCAPE lighting?
When the main power supply fails, the emergency escape lighting automatically starts and emits enough illumination to allow passengers and visitors to safely evacuate the home.
3. Emergency escape lighting itself is subdivided into
Open area lighting (bulkhead and other emergency lights)
Escape route lighting (usually illuminated fire exit sign with whites running on a green background)
High-risk mission area lighting (allowing to close dangerous processes)
The law requires public access to buildings and most businesses to provide emergency escape lighting.
4. What are the key types of emergency lights?
There are two main types of emergency lighting: maintenance and non-maintenance.
The maintained emergency light is always on and remains lit for the shortest emergency duration (usually 3 hours) after a power failure. Maintenance emergency escape lights are used in theaters, cinemas, entertainment halls and other gathering places, as well as shopping centers and similar places. They allow the public to become familiar with emergency routes and have the advantage of being able to immediately detect any malfunction of the emergency lighting bulb.
Unmaintained emergency lights will only illuminate in the event of a main power failure and will remain lit for the shortest emergency duration required. Unmaintained emergency lights may be found in offices, shops and factories.
5. Do you have to illuminate all escape route lighting?
If there is sufficient open area emergency lighting near the fire exit, a non-illuminated fire exit sign can be used in less important locations. In this case, a photoluminescent fire exit sign is preferred, although sufficient light must be ensured to reach the photoluminescent sign to ensure that it is always "charged".
6. Notes
National standards provide clear guidance on the design and installation of emergency lighting. It should be borne in mind that British standards set out best practices for standard situations, but specific installations may require higher standards.
The actual illumination should be closely related to the nature of the house and its occupants.
Special consideration should be given to crowded places such as nursing homes, hospitals, bars, discos and supermarkets, and whether the premises are residential.
The borrowed lighting can be applied to small houses (such as small shops) where light enters the building from a reliable external source, for example, a street light that will fully illuminate the escape route. Alternatively, a single "independent" escape lighting unit may be sufficient in a small house that can sometimes be combined with an exit or direction sign.
The emergency lighting system should be installed by an electrician specializing in emergency lighting.
They need to be familiar with BS 5266-1-2011 emergency lighting - Part 1: Code of practice for emergency lighting.
The school’s request for emergency lights is a bit like anomalies.
Since the school only works during the day, no emergency lighting is required. However, if the school is used during non-working hours, such as in the lobby, emergency lighting should be installed on the lobby and exit routes. The “responsible person” should have the final decision on this and may want to consult a local fire officer.
Toilet facilities used by disabled persons and/or any multiple closet facilities without borrowed lights should have emergency escape lighting from at least one luminaire. If there are no borrowed lights, the organization may have to provide emergency escape lighting in each compartment.
7. What are the rules for renting a property?
For residential properties, the landlord is considered the “responsible person” for all fire safety and emergency lighting.
Single-family homes and multi-storey homes with up to two storeys require only traditional lighting, and if the escape route is complex and there is no effective borrowing, the third and fourth floors may require emergency escape lighting.
Multi-storey mattresses occupying one to four floors (with separate cooking facilities on the bed) require traditional lighting and emergency escape lighting, if the risk requires or there is no effective borrowed light. Multi-storey five- or six-story bed home with separate cooking facilities that require traditional lighting and emergency escape lighting
If a fire risk assessment requires it, the conversion of a two-, three- or four-story house into a detached apartment requires traditional lighting and emergency escape lighting.
The five or six-storey houses were converted into separate apartments that required traditional lighting and emergency escape lighting. It is important that the common escape route should be well lit.
There are guidelines to help understand the required regulations, and landlords need to understand their responsibility for conducting fire risk assessments and ensure that their property has appropriate and appropriate fire safety measures.
8. How do you maintain emergency lighting?
Emergency lights must be tested periodically unless they are self-test emergency lights.
An emergency light with a built-in backup battery shows a small green LED indicating that the internal battery is charging. Older models may have red lights. However, you still need to check the function of the emergency light regularly, as the LED only confirms that the device is charging, not the entire time period required for the battery to continue or the lamp is in normal working condition.
All emergency lighting systems must be tested once a month. This test is based on the short-term functional test of BS EN 50172:2004 / BS 5266-8:2004.
The time to simulate the fault should be sufficient for the test while minimizing damage to system components, such as lights. During this time, all fixtures and signs should be inspected to ensure they are present, clean and functioning properly. An emergency lighting key switch can be used to interrupt the power to the emergency light without affecting the power supply to the normal lighting circuit.
The entire duration of the emergency light (usually 3 hours) must be tested annually. At the end of this test, the emergency light must still work. The results must be recorded and these results must be corrected as soon as possible if a failure is detected.
Any battery that cannot last for three hours should be replaced immediately.
Life expectancy will vary depending on battery usage - some people expect a life expectancy of 4 years, which is about 5 years. When the life expectancy expires, the battery should be replaced. It is best to write the date of installation on the battery when replacing the battery for future reference.
If the accessory has a fluorescent tube, the life depends on whether the device is maintained or not.
The emergency light manufacturer recommends that the lights in the maintenance bulkhead be replaced every six months. If the end of the fluorescent lamp turns black / begins to darken, the lamp needs to be replaced.
The occupier/owner of the premises shall appoint a competent person to supervise the testing of the system. This person should have sufficient authority to ensure that any work required to maintain the proper functioning of the system is performed. Competence can be defined as someone with sufficient training and experience or knowledge and other qualities that allow them to properly maintain the system. The level of competence required will depend on the complexity of the situation and the special assistance required.
From a practical point of view, the average caregiver can use the test key to remove the power from the emergency light and ensure that the emergency light remains within the required time period. When repairing a failed emergency light, an electrician is likely to be required unless the caregiver is sufficiently qualified to replace the battery and luminaire.
But it is important that all tests are recorded in the fire safety log.
If the lamp is replaced before it completely fails, the life of the emergency lamp will be longer. However, this recommendation may only apply if the organization has a contractor to maintain emergency lighting and the cost of the call is high. In this case, preemptive maintenance (replacement while the lights are still working) makes sense.
In the long run, LED lamps are more economical than fluorescent tubes because they not only save power when the lamp is turned on, but also save power even during trickle charging of the battery. However, the real savings in LED emergency lights come from the fact that it is not necessary to replace the tubes annually or annually. LEDs will last longer, saving the cost of maintenance calls and tube replacement.
Many systems install a fishtail key switch in the power supply to form a suitable emergency light set so you don’t have to turn off the fuse level power supply during inspection. If your system can only be tested by turning off the lighting completely, you can only test when the building is empty and have the appropriate portable light or appropriate daylight in all the locations you are checking. If your company has a dangerous process, lighting may have to be turned on all the time, so central shutdown is not appropriate.
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Instead of waiting a few hours on the roadside for help, why not start your own car and get ready to jump starter?
How does the car starter work?
These portable car starters work the same way as jumper cables, if you want to start pushing your friend’s car. However, instead of connecting one car battery to another car battery, the jump starter itself has a battery inside, in which case it will act as a "donation car."
If you are doing a standard jump, just like using it, it should work fine. Not all hoppers are created equally, so be sure to do some research before you buy the first one you see. Of course, you need to make sure your jump starter is charged before you go on holiday, otherwise you may be trapped by the wrong security.
Why is a car starter useful?
Well, the main advantage of a car jump starter is that it can make your car jump without the need for a twisted jumper or a second car. It is not easy to find a friend or family to jump in. Many companies or service departments will charge you a fee. This handy device means you can do everything yourself.
Another benefit is peace of mind and knowledge, no matter where you are, you have the ability to jump. From personal experience, we can tell you that this is a very stressed battery trapped in the car, the battery is not enough, any family or friends can help.
These quick starters are also very light and compact, and usually do not take up too much space in the trunk or rear seat. They are also very simple to use in most cases, so if you know how to connect cables to jump, you can use a portable jumper starter. Even if you don’t do this, the Internet is full of resources that can help you.
Risk of driving long distances in the heat
When winter comes, we all know the dangers of driving, such as cold road conditions, frozen batteries, etc. However, driving in the hot summer is also quite a risk. Extremely high temperatures can cause the tires to swell, the battery to die, and can cause potential problems in the car’s cooling system.
In addition to car problems, driving at high temperatures can lead to dehydration and heat stroke. Therefore, be careful when driving in hot weather and be sure to monitor the vehicle frequently. Moreover, all of this does not mention the impact of heat on power banks (but this is a different story).
All in all, getting a summer car jump starter can be a difference between a great vacation and a catastrophic vacation.
What kind of summer plan do you have in the coming months? For your thoughts on the jump starter, please let us know in the comments on the Linsheng Electrical Company website!
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The quality of LED spotlights on the market varies widely. It is difficult to distinguish between good and bad with the naked eye, so the best choice for buying a spotlight is to buy a branded product and choose the corresponding high quality transformer. For example: Spotlight supplier from China: Linsheng spotlight, the product has a good reputation in the international market. Our products are sold worldwide.
1. The first step in choosing an LED spotlight is to choose a big brand and a regular manufacturer. Linsheng is an excellent Spotlight Supplier from China . You can find out about the company’s products or consult sales through the website.
2. LED spotlights can be divided into two types: low voltage and high voltage. Consumers prefer low-pressure spotlights because they have a longer life and higher luminous efficiency. The luminous efficiency of an LED spotlight is represented by its power factor. The greater the power factor, the higher the light efficiency. General lighting has a power factor of about 0.5, so it is not expensive. However, the power factor of high-quality LED spotlights can reach 0.99, so the price is slightly more expensive.
3. LED spotlights are commonly used to enhance the illumination of ornamental plants that are typically embedded in ceilings or walls. Since spotlights can generate high temperatures during operation, it is important to purchase high quality products, otherwise there will be potential safety risks.
4. The use of LED spotlights should match the transformer. High quality beads should be chosen. Otherwise the beads of the LED spotlight are easily broken. Changing the beads on the ceiling is a rather cumbersome task.
5. The theoretical life of the big brand LED spotlight is 50,000 hours, and the warranty period is 2-3 years. These high-end LED spotlights can even enjoy a 5-year warranty. Due to the limited life of the lamp cup, conventional spotlights are relatively short or even without warranty.
LED spotlights are widely used and the lighting effect is very good. Be sure to pay attention to these problems when purchasing LED spotlights.
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1. The first step in choosing an LED spotlight is to choose a big brand and a regular manufacturer. Linsheng is an excellent Spotlight Supplier from China . You can find out about the company’s products or consult sales through the website.
2. LED spotlights can be divided into two types: low voltage and high voltage. Consumers prefer low-pressure spotlights because they have a longer life and higher luminous efficiency. The luminous efficiency of an LED spotlight is represented by its power factor. The greater the power factor, the higher the light efficiency. General lighting has a power factor of about 0.5, so it is not expensive. However, the power factor of high-quality LED spotlights can reach 0.99, so the price is slightly more expensive.
3. LED spotlights are commonly used to enhance the illumination of ornamental plants that are typically embedded in ceilings or walls. Since spotlights can generate high temperatures during operation, it is important to purchase high quality products, otherwise there will be potential safety risks.
4. The use of LED spotlights should match the transformer. High quality beads should be chosen. Otherwise the beads of the LED spotlight are easily broken. Changing the beads on the ceiling is a rather cumbersome task.
5. The theoretical life of the big brand LED spotlight is 50,000 hours, and the warranty period is 2-3 years. These high-end LED spotlights can even enjoy a 5-year warranty. Due to the limited life of the lamp cup, conventional spotlights are relatively short or even without warranty.
LED spotlights are widely used and the lighting effect is very good. Be sure to pay attention to these problems when purchasing LED spotlights.
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Is there an LED bulb that lasts more than 25,000 hours?
Yes. Almost any LED bulb can last more than 25,000 hours or more. Most bulbs will last for more than 50,000 hours under the design of the fixture.
Unlike incandescent or compact fluorescent bulbs, which are used continuously for a year or less, LED bulbs begin to lose strength after about three years and disappear at a slow rate until they are completely extinguished. It’s possible that you won’t even realize this slow degradation for a long time, or until it reaches the point where the LED bulb is burning.
Emergency Light Manufacturers Description: The only reason LED bulbs have not been rated for 50,000 hours is the ENERGY STAR test gauge. For a full 50,000-hour test, the bulb manufacturer will have to test the LED bulb for a year. Since LED technology is improving every day, bulb patents are often outdated when they complete a one-year test. Instead, the manufacturer conducted a six-month accelerated test that showed a 25,000-hour rating.
Please be assured that if you purchase an LED bulb, if properly installed and placed indoors, you will get more than 25,000 hours from the LED bulb.
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Yes. Almost any LED bulb can last more than 25,000 hours or more. Most bulbs will last for more than 50,000 hours under the design of the fixture.
Unlike incandescent or compact fluorescent bulbs, which are used continuously for a year or less, LED bulbs begin to lose strength after about three years and disappear at a slow rate until they are completely extinguished. It’s possible that you won’t even realize this slow degradation for a long time, or until it reaches the point where the LED bulb is burning.
Emergency Light Manufacturers Description: The only reason LED bulbs have not been rated for 50,000 hours is the ENERGY STAR test gauge. For a full 50,000-hour test, the bulb manufacturer will have to test the LED bulb for a year. Since LED technology is improving every day, bulb patents are often outdated when they complete a one-year test. Instead, the manufacturer conducted a six-month accelerated test that showed a 25,000-hour rating.
Please be assured that if you purchase an LED bulb, if properly installed and placed indoors, you will get more than 25,000 hours from the LED bulb.
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LEDs, also known as light-emitting diodes, are basically used as indicators in various electronic devices such as computers, clock radios, televisions, DVD players and MP3 players. The use of LEDs has been very popular all over the world for decades. However, today’s LED features are available at the most affordable price and in a wide variety of colors, providing bright and clear light. For nearly 100 years, incandescent bulbs and lamps have been serving people for different lighting purposes. linsheng said that LED work lights and light bulbs are now ideal for home use and professionals, and they will soon replace a variety of incandescent bulbs and light bulbs.
What is an LED bulb?
The operating system of an LED bulb is similar to a conventional bulb. However, the main feature of LEDs is that it is easy to install directly into the circuit. LEDs are known for their longevity, because no filaments can dissipate the light without burning out. The filament usually generates heat, so the LED bulb and bulb do not get hot because they do not have a filament. In addition, LED work bulbs use relatively less power than conventional bulbs.
The market is full of LEDs with a wide range of colors. Some commonly used LED colors are green, yellow and red. However, most people like to buy LEDs that are available in color. In fact, it is currently impossible for LED bulb and luminaire suppliers to create pure white. It is widely seen that most LED flashlights are not pure white, but their colors are white-blue instead of pure white.
Benefits of LED bulbs and fixtures:
The high efficiency of LED bulbs and luminaires makes it a perfect alternative to camping, workshops, roadside assistance, electricians, plumbers, motorcycle lights, car repairs, garages, power outages, etc. LED work light bulbs can be mass produced and offered at the lowest price.
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What is an LED bulb?
The operating system of an LED bulb is similar to a conventional bulb. However, the main feature of LEDs is that it is easy to install directly into the circuit. LEDs are known for their longevity, because no filaments can dissipate the light without burning out. The filament usually generates heat, so the LED bulb and bulb do not get hot because they do not have a filament. In addition, LED work bulbs use relatively less power than conventional bulbs.
The market is full of LEDs with a wide range of colors. Some commonly used LED colors are green, yellow and red. However, most people like to buy LEDs that are available in color. In fact, it is currently impossible for LED bulb and luminaire suppliers to create pure white. It is widely seen that most LED flashlights are not pure white, but their colors are white-blue instead of pure white.
Benefits of LED bulbs and fixtures:
The high efficiency of LED bulbs and luminaires makes it a perfect alternative to camping, workshops, roadside assistance, electricians, plumbers, motorcycle lights, car repairs, garages, power outages, etc. LED work light bulbs can be mass produced and offered at the lowest price.
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Now that you have invested in air compressors, there are some accessories to consider, especially if you want to do more than simply inflate the tires. With the right air compressor accessories, you can power air tools, paint, cleaning machinery and take on other projects. linsheng describes the various uses of the compressor and the four major accessories that help you with all of this.
Pressure regulator
Pressure regulators are probably the most sensible purchase. Once the regulator is installed, you can control the air flow to the compressor to ensure proper pressure for the job. The regulator is connected to the output air line, allowing you to lower the air pressure through the hose and pneumatic tools. With the regulator, you will be able to run the tool at the lowest possible setting, reducing energy costs and compressor wear.
2. Air hose
Your compressor may be equipped with an air hose, but it may not be long or not enough to handle most of the rigorous work. You need an air hose for use with the adapter to operate certain pneumatic tools, including nail guns, air hammers, air guns, air ratchets, and pneumatic hammers. In addition, if you purchase an older air compressor or have your air compressor for a long time, your current hose may become brittle, kinky or damaged. For these reasons, air hoses are ideal accessories.
3 dryer
Compressed air contains a lot of water and is a natural by-product. But moisture can damage the equipment, causing the pneumatic system to rust and wear moving parts because it eliminates lubrication. In addition, moisture can negatively change color, finish and paint cohesion, plugging the orifice and freezing the control line. The solution here is a desiccant dryer containing a hygroscopic (absorbent) material such as beads. Connect the dryer to the hose just in front of the spray gun. Replace the dryer when the dryer is no longer working.
4. Air line filter
An alternative to the dryer is an air line filter that captures dirt, water and oil, prevents rusting of pneumatic tools, destroys your paint work or destroys equipment. Therefore, after installing the filter, the air quality will increase and you can extend the life of the air compressor.
With all these new tools, don’t forget to take care of the compressor itself throughout its useful life. The best way to maintain an air compressor is to read the instructions in the supplied user manual. In general, you need to perform routine maintenance, such as replacing the air filter, draining from the tank, replacing the air compressor oil (unless it is oil-free) and replacing the compressor belt when worn. With proper maintenance and accessories, you and your compressor can solve a lot of work in the next few years.
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Pressure regulator
Pressure regulators are probably the most sensible purchase. Once the regulator is installed, you can control the air flow to the compressor to ensure proper pressure for the job. The regulator is connected to the output air line, allowing you to lower the air pressure through the hose and pneumatic tools. With the regulator, you will be able to run the tool at the lowest possible setting, reducing energy costs and compressor wear.
2. Air hose
Your compressor may be equipped with an air hose, but it may not be long or not enough to handle most of the rigorous work. You need an air hose for use with the adapter to operate certain pneumatic tools, including nail guns, air hammers, air guns, air ratchets, and pneumatic hammers. In addition, if you purchase an older air compressor or have your air compressor for a long time, your current hose may become brittle, kinky or damaged. For these reasons, air hoses are ideal accessories.
3 dryer
Compressed air contains a lot of water and is a natural by-product. But moisture can damage the equipment, causing the pneumatic system to rust and wear moving parts because it eliminates lubrication. In addition, moisture can negatively change color, finish and paint cohesion, plugging the orifice and freezing the control line. The solution here is a desiccant dryer containing a hygroscopic (absorbent) material such as beads. Connect the dryer to the hose just in front of the spray gun. Replace the dryer when the dryer is no longer working.
4. Air line filter
An alternative to the dryer is an air line filter that captures dirt, water and oil, prevents rusting of pneumatic tools, destroys your paint work or destroys equipment. Therefore, after installing the filter, the air quality will increase and you can extend the life of the air compressor.
With all these new tools, don’t forget to take care of the compressor itself throughout its useful life. The best way to maintain an air compressor is to read the instructions in the supplied user manual. In general, you need to perform routine maintenance, such as replacing the air filter, draining from the tank, replacing the air compressor oil (unless it is oil-free) and replacing the compressor belt when worn. With proper maintenance and accessories, you and your compressor can solve a lot of work in the next few years.
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If the "heart" of the emergency light is a battery, then the board must be its "brain." Each emergency light is equipped with a small circuit board that controls its various functions. The China Emergency Light Manufacturers states:
Keep the battery fully charged.
Convert the building’s AC power to DC power, power the lamp and charge the battery.
When the building is powered off, switch the device to emergency battery power.
The processes involved are not very complicated, but they must always work correctly. If any component fails, the emergency light will be worthless. Regular maintenance will ensure that the board continues to operate as designed.
Insurance battery charging
All batteries discharge themselves over time, and the board is counteracted by sporadic trickle charging. This slow charging allows the battery to run at full capacity and extend its shelf life.
Convert AC to DC
There are currently no AC batteries, but there are bulbs available with AC (Alternating Current) and DC (DC) options. The alternating current in the building is converted to direct current by a half-wave bridge rectifier on the board, which is the easiest way to convert alternating current to direct current. This allows the positive waveform to pass through the DC circuit of the device without any problems.
Switch from AC power to battery power
In the event of a building power failure, the emergency light circuit will automatically switch to the backup battery power. This switching takes a few seconds and is regulated by an electrolytic capacitor and a resistor that acts as a timer. This delay offsets any flicker caused by a sudden voltage level drop due to sudden activation of the appliance on the same circuit (eg, air conditioning). If the emergency light switches immediately, the capacitor may be damaged.
Replace the emergency light board
The board in the emergency light should last for 10 - 15 years. Electrolyte capacitors are usually the first to fail because the internal electrolyte will gradually dry out and heat will exacerbate the process. If the emergency light fails during maintenance or an actual emergency, use a multimeter to test the lamp and battery. If they prove to be satisfactory, the board should be replaced.
Replacing a board is simple and does not require a static-free environment like a computer circuit. Simply open the case, remove the attached wires and unscrew the board.
Each bulb type, battery model and voltage has a unique board. It is important to replace the waste board with the same board provided by the same manufacturer or at least the company’s approved replacement circuit.
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Keep the battery fully charged.
Convert the building’s AC power to DC power, power the lamp and charge the battery.
When the building is powered off, switch the device to emergency battery power.
The processes involved are not very complicated, but they must always work correctly. If any component fails, the emergency light will be worthless. Regular maintenance will ensure that the board continues to operate as designed.
Insurance battery charging
All batteries discharge themselves over time, and the board is counteracted by sporadic trickle charging. This slow charging allows the battery to run at full capacity and extend its shelf life.
Convert AC to DC
There are currently no AC batteries, but there are bulbs available with AC (Alternating Current) and DC (DC) options. The alternating current in the building is converted to direct current by a half-wave bridge rectifier on the board, which is the easiest way to convert alternating current to direct current. This allows the positive waveform to pass through the DC circuit of the device without any problems.
Switch from AC power to battery power
In the event of a building power failure, the emergency light circuit will automatically switch to the backup battery power. This switching takes a few seconds and is regulated by an electrolytic capacitor and a resistor that acts as a timer. This delay offsets any flicker caused by a sudden voltage level drop due to sudden activation of the appliance on the same circuit (eg, air conditioning). If the emergency light switches immediately, the capacitor may be damaged.
Replace the emergency light board
The board in the emergency light should last for 10 - 15 years. Electrolyte capacitors are usually the first to fail because the internal electrolyte will gradually dry out and heat will exacerbate the process. If the emergency light fails during maintenance or an actual emergency, use a multimeter to test the lamp and battery. If they prove to be satisfactory, the board should be replaced.
Replacing a board is simple and does not require a static-free environment like a computer circuit. Simply open the case, remove the attached wires and unscrew the board.
Each bulb type, battery model and voltage has a unique board. It is important to replace the waste board with the same board provided by the same manufacturer or at least the company’s approved replacement circuit.
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Since there are many types of gas stoves with different ignition systems on the market, you may find it difficult to make the right choice. linsheng lists some important information about the ignition system, which makes it easy for you to make a decision:
Matching ignition system
These are the more popular and basic ignition systems that require the user to open the gas valve with the valve key and then ignite the burner. The user simply turns off the gas valve to turn off the ignition system.
Spark ignition system
This is more advanced than the ignition ignition system. In a spark ignition system, the igniter probe is mounted on a burner beside the gas outlet. The igniter probe is connected to a button with a valve. The user simply turns on the gas valve with the key and pushes the button to ignite the probe. This in turn ignites the burner. Sparks are usually powered by batteries and do not require electricity. The battery is placed inside the button and can be easily replaced.
Manual safety test system
These ignition systems are designed to shut off the supply of air in the event of a failure of the pilot flame. Manual safety pilot systems either use spark ignition or ignite. The thermocouple and pilot valve are mounted next to the gas outlet and connected to a gas valve. When the user presses and turns the knob, it opens the pilot valve to initiate airflow. The pilot uses a spark igniter or a match to ignite. The thermocouple is engulfed by the flame, which generates a current that flows into the electromagnet and keeps the pilot valve open.
The knob remains in the pressed position until the indicator light burns itself and then moves to the open position. When the gas flows to the burner, it is ignited by the pilot flame. In the case where the pilot flame is extinguished, the thermocouple cools down, no longer generates electricity, the valve closes, and the gas supply is shut off.
Electronic ignition system
These are the most advanced ignition systems. You only need to press a button and the rest is the responsibility of the system. The ignition system requires an external power source and can be a battery or a mains power source. These systems are remotely ready and you can purchase remote equipment to operate the ignition system.
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Matching ignition system
These are the more popular and basic ignition systems that require the user to open the gas valve with the valve key and then ignite the burner. The user simply turns off the gas valve to turn off the ignition system.
Spark ignition system
This is more advanced than the ignition ignition system. In a spark ignition system, the igniter probe is mounted on a burner beside the gas outlet. The igniter probe is connected to a button with a valve. The user simply turns on the gas valve with the key and pushes the button to ignite the probe. This in turn ignites the burner. Sparks are usually powered by batteries and do not require electricity. The battery is placed inside the button and can be easily replaced.
Manual safety test system
These ignition systems are designed to shut off the supply of air in the event of a failure of the pilot flame. Manual safety pilot systems either use spark ignition or ignite. The thermocouple and pilot valve are mounted next to the gas outlet and connected to a gas valve. When the user presses and turns the knob, it opens the pilot valve to initiate airflow. The pilot uses a spark igniter or a match to ignite. The thermocouple is engulfed by the flame, which generates a current that flows into the electromagnet and keeps the pilot valve open.
The knob remains in the pressed position until the indicator light burns itself and then moves to the open position. When the gas flows to the burner, it is ignited by the pilot flame. In the case where the pilot flame is extinguished, the thermocouple cools down, no longer generates electricity, the valve closes, and the gas supply is shut off.
Electronic ignition system
These are the most advanced ignition systems. You only need to press a button and the rest is the responsibility of the system. The ignition system requires an external power source and can be a battery or a mains power source. These systems are remotely ready and you can purchase remote equipment to operate the ignition system.
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Emergency light battery:
Power lamp head during an emergency
Must last at least 90 minutes
Affordable and easy to replace
Provide different voltage and current strength
Tested monthly and annually according to OSHA regulations
The battery test button is standard on all emergency lights. By pressing the test button, the emergency light unit switches from AC power to emergency battery power, giving you a clear view of the remaining battery.
Fully charged batteries are in good condition and should be powered for at least 90 minutes as required by UL (Underwriters Laboratories). If the battery does not last for 90 minutes, it must be replaced. The UL 924 list is only for batteries that meet or exceed the UL rigorous testing procedures.
China Emergency Light Manufacturers say that many of today’s emergency luminaires are equipped with self-test options that allow equipment to automatically run monthly and annual inspections, reduce maintenance requirements and increase the efficiency of building emergency lighting systems.
https://www.linsheng.com
Power lamp head during an emergency
Must last at least 90 minutes
Affordable and easy to replace
Provide different voltage and current strength
Tested monthly and annually according to OSHA regulations
The battery test button is standard on all emergency lights. By pressing the test button, the emergency light unit switches from AC power to emergency battery power, giving you a clear view of the remaining battery.
Fully charged batteries are in good condition and should be powered for at least 90 minutes as required by UL (Underwriters Laboratories). If the battery does not last for 90 minutes, it must be replaced. The UL 924 list is only for batteries that meet or exceed the UL rigorous testing procedures.
China Emergency Light Manufacturers say that many of today’s emergency luminaires are equipped with self-test options that allow equipment to automatically run monthly and annual inspections, reduce maintenance requirements and increase the efficiency of building emergency lighting systems.
https://www.linsheng.com
linsheng helps you analyze, what kind of oil can be used as air compressor lubricant? Let’s take a look
1, viscosity temperature performance is better
The fuel injection internal cold rotary air compressor is repeatedly heated and cooled during operation. Therefore, the viscosity of the oil should not be changed too much due to temperature changes, and should have good viscosity-temperature properties. The refined compressor oil has a viscosity index of 90 or more.
2, the flash point should be suitable
The flash point is the temperature at which the vapor pressure of the oil is heated under atmospheric pressure to the lower limit concentration ignited by an open flame. When the flash point is too high, the oil fraction is heavy, the viscosity is also large, the asphaltene content is high, and the carbon is easily accumulated when used. If one-sided pursuit of high-flash air compressor oil, it will become an unsafe factor. Therefore, the flash point of the air compressor oil is required to be suitable.
Flash point is only one of the safety indicators for oil use. The flash point of air compressor oil is generally safe to use above 200 °C.
3, the tendency of carbon deposition is small
How the air compressor oil resistance to carbon deposition is critical to the reliable operation of the compressor oil. In actual industrial use, it is not uncommon for large and medium-sized air compressors to explode due to carbon deposits.
The main substances that easily form carbon residue in oils are asphaltenes, colloids and polycyclic aromatic hydrocarbons. Most of the above materials can be removed after deep purification of the lubricating oil. Generally, low-viscosity and deep-refined lubricating oils have low residual carbon values and are not easy to deposit carbon during use. Therefore, high-quality air compressor oil should use a deep refined narrow-cut base oil that does not contain residue (bright oil). Additives should also use ashless additives as much as possible.
4, the quality of the base oil is high
The base oil of air compressor oil generally accounts for more than 95% of the refined oil. Therefore, the quality of the base oil is directly related to the quality level of the refined oil of the compressor oil, and the quality of the base oil is directly related to the depth of refining. Refined deep base oils contain less heavy aromatics and gums. The residual carbon is low, the sensitivity of the antioxidant is good, and the quality of the base oil is high. It has a small tendency to deposit carbon in the compressor system, and the oil-water separation is good, and the service life is relatively long. The synthetic oil type base oil is a lubricating oil prepared by chemically synthesizing an organic liquid base oil and then blending or adding various additives. Most of its base oils are polymers or high molecular organic compounds. There are many types of synthetic oils, and synthetic oils used as air compressor oils mainly include synthetic hydrocarbons (polyalphaolefins), organic esters (diesters), polyalkylene glycols, fluorosilicone oils, and phosphate esters. Synthetic oil compressor oils are much more expensive than mineral oil compressor oils, but the overall economic benefits of synthetic oils still exceed that of ordinary mineral oils. It has oxidation stability, low tendency to deposit carbon, can be lubricated over the temperature range of ordinary mineral oil, and has a long service life, which can meet the requirements of general mineral oil type compressor oil.
5, the base oil fraction should be narrow
Studying the working conditions of air compressor oil: It is considered that improving the base oil composition is a key factor to improve the quality of air compressor oil. After the compressor oil blended by the light and heavy components is injected into the cylinder of the air compressor, the light components are too volatile to advance away from the working part, which affects the lubrication effect, and the heavy components are poor in volatility. After completing the work task, it is not possible to quickly leave the work and work area. Over time, it is easy to generate carbon deposits under the action of heat and oxygen. Therefore, under such conditions, the lubricating oil should be a component oil of a narrow fraction, and a mixture of a plurality of fractions should not be used. The No. 19 air compressor oil is prepared by using a wide distillate containing a large amount of residue components, and the amount of carbon deposited in the hollow press is large. Therefore, in order to improve the quality of the air compressor oil, the residue component in the No. 19 compressor oil should be removed, and the narrow fraction base oil is selected.
6, the viscosity should be suitable
Under dynamic lubrication conditions, the thickness of the oil film increases as the viscosity of the oil increases, but the frictional force increases as the viscosity of the oil increases. Lubricating oil with too low viscosity is not easy to form a strong enough oil film, which will accelerate wear and shorten the service life of the machine. Conversely, if the viscosity of the lubricating oil is too high, the internal friction will increase, and the specific power of the air compressor will increase, so that the power consumption and fuel consumption will be increased, and it will also be in the piston ring groove, the gas valve, the exhaust passage, etc. Deposits are formed at the site. Therefore, choosing the right viscosity is the primary problem in the correct selection of air compressor oil. Xi’an Jiaotong University has passed the test to prove that the same test conditions are used on the same type of air compressor. The oil with lower viscosity grade can reduce the specific power of the air compressor by about 10% compared with the oil with high viscosity grade. There is no significant difference in the amount of wear of the parts. Therefore, under the premise of ensuring lubrication, selecting oils with suitable viscosity grades has an important influence on energy saving and reliable operation of the compressor.
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1, viscosity temperature performance is better
The fuel injection internal cold rotary air compressor is repeatedly heated and cooled during operation. Therefore, the viscosity of the oil should not be changed too much due to temperature changes, and should have good viscosity-temperature properties. The refined compressor oil has a viscosity index of 90 or more.
2, the flash point should be suitable
The flash point is the temperature at which the vapor pressure of the oil is heated under atmospheric pressure to the lower limit concentration ignited by an open flame. When the flash point is too high, the oil fraction is heavy, the viscosity is also large, the asphaltene content is high, and the carbon is easily accumulated when used. If one-sided pursuit of high-flash air compressor oil, it will become an unsafe factor. Therefore, the flash point of the air compressor oil is required to be suitable.
Flash point is only one of the safety indicators for oil use. The flash point of air compressor oil is generally safe to use above 200 °C.
3, the tendency of carbon deposition is small
How the air compressor oil resistance to carbon deposition is critical to the reliable operation of the compressor oil. In actual industrial use, it is not uncommon for large and medium-sized air compressors to explode due to carbon deposits.
The main substances that easily form carbon residue in oils are asphaltenes, colloids and polycyclic aromatic hydrocarbons. Most of the above materials can be removed after deep purification of the lubricating oil. Generally, low-viscosity and deep-refined lubricating oils have low residual carbon values and are not easy to deposit carbon during use. Therefore, high-quality air compressor oil should use a deep refined narrow-cut base oil that does not contain residue (bright oil). Additives should also use ashless additives as much as possible.
4, the quality of the base oil is high
The base oil of air compressor oil generally accounts for more than 95% of the refined oil. Therefore, the quality of the base oil is directly related to the quality level of the refined oil of the compressor oil, and the quality of the base oil is directly related to the depth of refining. Refined deep base oils contain less heavy aromatics and gums. The residual carbon is low, the sensitivity of the antioxidant is good, and the quality of the base oil is high. It has a small tendency to deposit carbon in the compressor system, and the oil-water separation is good, and the service life is relatively long. The synthetic oil type base oil is a lubricating oil prepared by chemically synthesizing an organic liquid base oil and then blending or adding various additives. Most of its base oils are polymers or high molecular organic compounds. There are many types of synthetic oils, and synthetic oils used as air compressor oils mainly include synthetic hydrocarbons (polyalphaolefins), organic esters (diesters), polyalkylene glycols, fluorosilicone oils, and phosphate esters. Synthetic oil compressor oils are much more expensive than mineral oil compressor oils, but the overall economic benefits of synthetic oils still exceed that of ordinary mineral oils. It has oxidation stability, low tendency to deposit carbon, can be lubricated over the temperature range of ordinary mineral oil, and has a long service life, which can meet the requirements of general mineral oil type compressor oil.
5, the base oil fraction should be narrow
Studying the working conditions of air compressor oil: It is considered that improving the base oil composition is a key factor to improve the quality of air compressor oil. After the compressor oil blended by the light and heavy components is injected into the cylinder of the air compressor, the light components are too volatile to advance away from the working part, which affects the lubrication effect, and the heavy components are poor in volatility. After completing the work task, it is not possible to quickly leave the work and work area. Over time, it is easy to generate carbon deposits under the action of heat and oxygen. Therefore, under such conditions, the lubricating oil should be a component oil of a narrow fraction, and a mixture of a plurality of fractions should not be used. The No. 19 air compressor oil is prepared by using a wide distillate containing a large amount of residue components, and the amount of carbon deposited in the hollow press is large. Therefore, in order to improve the quality of the air compressor oil, the residue component in the No. 19 compressor oil should be removed, and the narrow fraction base oil is selected.
6, the viscosity should be suitable
Under dynamic lubrication conditions, the thickness of the oil film increases as the viscosity of the oil increases, but the frictional force increases as the viscosity of the oil increases. Lubricating oil with too low viscosity is not easy to form a strong enough oil film, which will accelerate wear and shorten the service life of the machine. Conversely, if the viscosity of the lubricating oil is too high, the internal friction will increase, and the specific power of the air compressor will increase, so that the power consumption and fuel consumption will be increased, and it will also be in the piston ring groove, the gas valve, the exhaust passage, etc. Deposits are formed at the site. Therefore, choosing the right viscosity is the primary problem in the correct selection of air compressor oil. Xi’an Jiaotong University has passed the test to prove that the same test conditions are used on the same type of air compressor. The oil with lower viscosity grade can reduce the specific power of the air compressor by about 10% compared with the oil with high viscosity grade. There is no significant difference in the amount of wear of the parts. Therefore, under the premise of ensuring lubrication, selecting oils with suitable viscosity grades has an important influence on energy saving and reliable operation of the compressor.
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Linsheng Air Compressor Guide has compiled relevant knowledge of the causes of air compressor failures and solved the confusion encountered by car owners in the use of vehicles.
Sometimes, air compressors have failures that do not breathe or have low air pressure. What are the reasons for this problem? What should we do?
1. The air compressor cylinder pad is flushed and leaks. The cylinder head should be replaced.
2. The partition walls of the inlet and outlet chambers are perforated and connected. The cylinder head should be replaced.
3. The air pressure indicator is out of order or the circuit is faulty. The performance is that it does not affect the brakes and the air is normal. The pressure gauge should be replaced.
4. The piston ring and the cylinder block are seriously worn, or the piston ring is broken and the cylinder is pulled. The piston ring and cylinder liner can be replaced according to the situation.
5. The pressure regulating valve cup is broken, accompanied by a continuous “哧哧” leaking sound; or the piston is stuck in the keyway, and no pressure can be established. Need to change the cup assembly and clean the pressure regulating valve.
6. The exhaust valve screw is loose or falling out. The valve plate is broken or cannot be fully opened, and the surface temperature of the air compressor is high. The exhaust valve screw can be screwed on or replaced.
7. The pressure regulating valve adjusts the pressure too low, or the spring that adjusts the pressure is broken. Use a screwdriver to turn the adjusting screw to 8 bar, and the pressure regulating valve starts to vent to the atmosphere, or replace the adjusting spring.
8. When installing, the cylinder head is reversed, the intake air becomes exhaust gas, and the air is reversed. The air compressor cylinder head is marked with a mark at the inlet and outlet: “S” is the air inlet and “D” is the air outlet. It should be removed and reinstalled.
9. From the outlet of the air compressor to the pipeline of the pressure regulating valve, there is a “beep” sound, and the connecting pipeline should be replaced.
10. The air intake valve of the air compressor falls or is padded with foreign matter, and the closing is not strict. The phenomenon is that the air inlet is touched by hand, and the temperature is also high. The elimination method is: removing the foreign matter and reinstalling the valve piece. If the valve piece is not flat or damaged, it should be replaced with a new one.
11. The air compressor gear slips. The air compressor gear and the shaft are taper and pressed by high torque to complete the torque transmission. There is no keyway. The reason for the slipping is generally that the torque of the tightening nut is not enough and loose. It can be reinstalled and tightened with a tightening torque of 200 to 300 Nm. Note: Loctite 242 anti-slack should be applied to the threaded part during installation.
The method for judging the air compressor gear slipping is: force the piston against the piston (upward), and move the flywheel to see if the air compressor piston is going up. If it does not move, the gear has slipped.
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Sometimes, air compressors have failures that do not breathe or have low air pressure. What are the reasons for this problem? What should we do?
1. The air compressor cylinder pad is flushed and leaks. The cylinder head should be replaced.
2. The partition walls of the inlet and outlet chambers are perforated and connected. The cylinder head should be replaced.
3. The air pressure indicator is out of order or the circuit is faulty. The performance is that it does not affect the brakes and the air is normal. The pressure gauge should be replaced.
4. The piston ring and the cylinder block are seriously worn, or the piston ring is broken and the cylinder is pulled. The piston ring and cylinder liner can be replaced according to the situation.
5. The pressure regulating valve cup is broken, accompanied by a continuous “哧哧” leaking sound; or the piston is stuck in the keyway, and no pressure can be established. Need to change the cup assembly and clean the pressure regulating valve.
6. The exhaust valve screw is loose or falling out. The valve plate is broken or cannot be fully opened, and the surface temperature of the air compressor is high. The exhaust valve screw can be screwed on or replaced.
7. The pressure regulating valve adjusts the pressure too low, or the spring that adjusts the pressure is broken. Use a screwdriver to turn the adjusting screw to 8 bar, and the pressure regulating valve starts to vent to the atmosphere, or replace the adjusting spring.
8. When installing, the cylinder head is reversed, the intake air becomes exhaust gas, and the air is reversed. The air compressor cylinder head is marked with a mark at the inlet and outlet: “S” is the air inlet and “D” is the air outlet. It should be removed and reinstalled.
9. From the outlet of the air compressor to the pipeline of the pressure regulating valve, there is a “beep” sound, and the connecting pipeline should be replaced.
10. The air intake valve of the air compressor falls or is padded with foreign matter, and the closing is not strict. The phenomenon is that the air inlet is touched by hand, and the temperature is also high. The elimination method is: removing the foreign matter and reinstalling the valve piece. If the valve piece is not flat or damaged, it should be replaced with a new one.
11. The air compressor gear slips. The air compressor gear and the shaft are taper and pressed by high torque to complete the torque transmission. There is no keyway. The reason for the slipping is generally that the torque of the tightening nut is not enough and loose. It can be reinstalled and tightened with a tightening torque of 200 to 300 Nm. Note: Loctite 242 anti-slack should be applied to the threaded part during installation.
The method for judging the air compressor gear slipping is: force the piston against the piston (upward), and move the flywheel to see if the air compressor piston is going up. If it does not move, the gear has slipped.
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A. Blue LED
The first visible spectrum LED was created in 1962 and emits only very low intensity light. The first LED has been used in electronics for several years as a weak monochromatic source for indicator lights or warning lights. The blue diode was invented in the 1990s and has since been improved to make it useful for new and important applications, primarily for lighting, television and computer screens. The first batch of white LEDs gradually appeared on the market, especially for home lighting, which is now getting stronger and stronger. Light-emitting diodes are now commonly used as common light sources in various lighting systems: for example, traffic lights, portable lighting, automotive lights and home interior lighting.
B. The LED market is expanding rapidly due to low energy consumption. They are used in a wide range of applications in a wide range of applications, including the following examples:
Road signs: traffic lights, urban lighting, road and traffic safety (car lights), warning lights...
Lighting for homes and workplaces: flashlights and headlights, lighting fixtures, spotlights, decorative lighting (spotlights, arrays, decorative lights, etc.), operating room lighting and dental chairs...
Medical or cosmetic applications: llamps for phototherapy applications, medical or cosmetic treatments...
C. linsheng describes the health effects of lighting systems using LEDs
In October 2010, the French Food, Environmental and Occupational Health and Safety Agency (ANSES) released an expert assessment of the health of lighting systems using LEDs.
The main feature of commercially available light-emitting diodes is that the proportion of blue light emitted is high and has a very high brightness ("brightness"). In fact, blue light is part of the white light emitted by the sun, or a traditional light bulb made up of the colors of the rainbow. Then, due to the toxic effects of blue light and the risk of glare, the most interesting issue identified by the Agency relates to the eye.
D. Risk associated with Blu-ray
The blue light emitted by LEDs is very common. Therefore, the photochemical risk associated with blue light - therefore considered to be harmful and dangerous to the retina due to cellular oxidative stress - depends on the cumulative dose of exposure to that person. Three populations have been identified as particularly sensitive to or particularly exposed to blue light: children and aphakic (no lens), patients with certain eye conditions (eg age-related macular degeneration, ARMD) and specially exposed population LEDs ( Some categories of workers: install lighting systems, theater and film industry professionals...).
However, the European Biosafety Standard for Light Biosafety of Lamps (NF EN 62471, December 2008, defined by the International Commission on Illumination - International Electrotechnical Commission and International Electrotechnical Commission - IEC), applies to lamps and equipment using lamps Exposure limits are recommended for radiation from these sources. It considers all photobiohazards (thermal and photochemical hazards) that may affect the eye and defines four risk groups:
Risk group 0 (no risk). No risk.
Risk group 1 (low risk). Under normal conditions of use, there is no risk of exposure limitations.
Risk group 2 (medium risk). Reflections away from the bulb are sufficient to limit the risk.
Risk group 3 (high risk). This product may be at risk even if it is exposed for an instant or a short period of time.
Is the LED light harmful to your eyes?
No, for the general public, the light source does not exceed risk group 0 (no risk) or 1 (low risk). Quality Assurance provided by the TÜV Rheinland certificate, an internationally recognized reference laboratory.
E. Risk associated with glare
Two types of glare have been identified:
Discomfort glare due to differences in brightness and contrast of the fixture results in an instinctive desire to stay away from bright light sources or difficult to see tasks.
Disability glare reduces the contrast between the task and the glare source to a point where the task cannot be distinguished due to the mutual reflection of light within the eyeball and the brightness of the fixture. When the glare is so strong, the vision is completely impaired.
Therefore, for outdoor lighting with uncomfortable glare, the LED luminaire must comply with the European standard NF EN 12464-1 ("Workplace Lighting - Part 1: Indoor Workplace").
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The first visible spectrum LED was created in 1962 and emits only very low intensity light. The first LED has been used in electronics for several years as a weak monochromatic source for indicator lights or warning lights. The blue diode was invented in the 1990s and has since been improved to make it useful for new and important applications, primarily for lighting, television and computer screens. The first batch of white LEDs gradually appeared on the market, especially for home lighting, which is now getting stronger and stronger. Light-emitting diodes are now commonly used as common light sources in various lighting systems: for example, traffic lights, portable lighting, automotive lights and home interior lighting.
B. The LED market is expanding rapidly due to low energy consumption. They are used in a wide range of applications in a wide range of applications, including the following examples:
Road signs: traffic lights, urban lighting, road and traffic safety (car lights), warning lights...
Lighting for homes and workplaces: flashlights and headlights, lighting fixtures, spotlights, decorative lighting (spotlights, arrays, decorative lights, etc.), operating room lighting and dental chairs...
Medical or cosmetic applications: llamps for phototherapy applications, medical or cosmetic treatments...
C. linsheng describes the health effects of lighting systems using LEDs
In October 2010, the French Food, Environmental and Occupational Health and Safety Agency (ANSES) released an expert assessment of the health of lighting systems using LEDs.
The main feature of commercially available light-emitting diodes is that the proportion of blue light emitted is high and has a very high brightness ("brightness"). In fact, blue light is part of the white light emitted by the sun, or a traditional light bulb made up of the colors of the rainbow. Then, due to the toxic effects of blue light and the risk of glare, the most interesting issue identified by the Agency relates to the eye.
D. Risk associated with Blu-ray
The blue light emitted by LEDs is very common. Therefore, the photochemical risk associated with blue light - therefore considered to be harmful and dangerous to the retina due to cellular oxidative stress - depends on the cumulative dose of exposure to that person. Three populations have been identified as particularly sensitive to or particularly exposed to blue light: children and aphakic (no lens), patients with certain eye conditions (eg age-related macular degeneration, ARMD) and specially exposed population LEDs ( Some categories of workers: install lighting systems, theater and film industry professionals...).
However, the European Biosafety Standard for Light Biosafety of Lamps (NF EN 62471, December 2008, defined by the International Commission on Illumination - International Electrotechnical Commission and International Electrotechnical Commission - IEC), applies to lamps and equipment using lamps Exposure limits are recommended for radiation from these sources. It considers all photobiohazards (thermal and photochemical hazards) that may affect the eye and defines four risk groups:
Risk group 0 (no risk). No risk.
Risk group 1 (low risk). Under normal conditions of use, there is no risk of exposure limitations.
Risk group 2 (medium risk). Reflections away from the bulb are sufficient to limit the risk.
Risk group 3 (high risk). This product may be at risk even if it is exposed for an instant or a short period of time.
Is the LED light harmful to your eyes?
No, for the general public, the light source does not exceed risk group 0 (no risk) or 1 (low risk). Quality Assurance provided by the TÜV Rheinland certificate, an internationally recognized reference laboratory.
E. Risk associated with glare
Two types of glare have been identified:
Discomfort glare due to differences in brightness and contrast of the fixture results in an instinctive desire to stay away from bright light sources or difficult to see tasks.
Disability glare reduces the contrast between the task and the glare source to a point where the task cannot be distinguished due to the mutual reflection of light within the eyeball and the brightness of the fixture. When the glare is so strong, the vision is completely impaired.
Therefore, for outdoor lighting with uncomfortable glare, the LED luminaire must comply with the European standard NF EN 12464-1 ("Workplace Lighting - Part 1: Indoor Workplace").
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