With the rapid development of our society, there will often be some abnormal situations in many industries, especially in the construction industry, because the buildings under construction are getting taller and taller, and the area they occupy is also very large, and the settings are becoming more and more complete. Because the construction industry has many particularities, emergency lighting is generally needed for construction sites, because emergency lighting can not only ensure the safety of the site, but also ensure the site.

brand of emergency lighting

emergency lighting is a kind of lamps that can effectively illuminate and display the evacuation passage when the power supply in normal lighting fails, or can continuously illuminate without interruption. Widely used in public places and places where lighting cannot be interrupted.

1. Minhua (excellent enterprise with high domestic market competitiveness, executive director of Guangdong Lighting Electrical Appliances Association, famous brand, Jiangmen Minhua Electrical Appliances Co., Ltd.)

2. Zhenhui (founded in 1989, an early domestic manufacturer of fire emergency 6&, member of China Lighting Association, Zhongshan Zhenhui Fire Equipment Co., Ltd.)

3. Aokete AKT (specializing in the production of lighting). S (national key enterprise in emergency lighting industry, top ten brands of emergency lights, enterprise specializing in emergency lighting, Guangdong Nast (International) Lighting Co., Ltd.)

5, Qihui (enterprise specializing in the production and sales of emergency lighting products, influential brands in the industry, top ten emergency light brands, Zhongshan Qihui Lighting Appliance Co., Ltd.)

6, Sanxiong Aurora (famous brand in China, well-known trademark in China). Guangdong Dongsong Sanxiong Electric Appliance Co., Ltd., one of the most competitive industrial brands in China)

Emergency lighting fault maintenance

1. After turning on the switch SA1, the emergency lighting doesn't work

Turn off SA1, and use a multimeter to conduct DC gear 1A (if there is no such gear, it can also be measured at 5mA speed) at both ends of SA1. Under normal conditions, the current should be 5-V? About 6mA. Note that switch SA2 should be in the "ignition" position at this time. If the current is normal, it means that SA1 is damaged and needs to be replaced; if there is no current, it is important to check the winding L4 of T2. L5, it can be measured and judged by multimeter ohm: Finally, the performance is measured by welding the VT, and if it is necessary to replace it, the medium power tube with a β value of more than 12 can be used. If there is still no current, use a multimeter to check the resistors R2 and R2 respectively. Is R3 changing value or open circuit, VD7. C2 is short-circuited. After the above maintenance treatment, turn on the switch SA1, and the lamp tube should be able to light normally. You can also see the details:? What are the functions and common sense of fire emergency lighting? !

2. The mains power supply is normal but the indicator light is not on

This fault is mostly caused by the damage of LED. You can use multimeter to judge whether VD5 is in good condition after soldering. The resistance of current limiting resistor R1 becomes larger or open circuit will also cause VD5 not to be bright.

3. The indicator light is still on when the mains power fails

This fault is caused by the deterioration of the reverse characteristics of VD6 or breakdown. As long as one IN44 rectifier diode is replaced, the fault can be eliminated.

4. After the power failure, the lamp works normally for a moment, and then the brightness drops

, which indicates that the battery may be faulty. Because this circuit has no protective measures to prevent the battery from over-discharging, if the mains power failure time is too long and the battery is over-discharged to a terminal voltage of 1V, SA1 will not be disconnected, which will lead to the battery over-discharging and lead to premature damage of its plates.

That's what Xiaobai shared in detail about emergency lighting. I hope our sharing can be very helpful to everyone. Emergency lighting is very important in our life. It can not only ensure the normal operation of our work, but also prevent accidents, especially in the construction industry. Emergency lighting is essential. Emergency lighting not only helps the work to continue, but also ensures the safety of workers. Therefore, emergency lighting has become necessary in many industries.

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