Q:Why does the emergency light appear when the power supply is normal?

D11 reverse breakdown in voltage state, the collector voltage of Q5 to Q3, Q4 provide the bias conduction, light L1, L2.

Q:Please describe the working principle and function of the safety exit sign and emergency light

This type of emergency lamp, each lamp has internal pressure transformer, voltage regulator, charging, inverter, battery and a large number of electronic components, emergency lights in use, maintenance, failure, batteries are required to charge and discharge

Q:Is the wall wiring for fire emergency lights and safety exit signs piping or iron pipes?

the fire separation zone must install fire doors must be equipped with double automatic system, with the fire regulations.

Q:What are the new national standards for fire emergency lamps?

when the fire emergency lamps a year of continuous work, the lamp will automatically emergency lighting inside the battery discharge end, and then automatically restored to the state of charge (i.e., the lamp will on its own battery maintenance)

Q:Can ordinary lights be used as emergency lights?

, only the power of different requirements, line laying

Q:What is the standard for the installation distance of fire emergency lights and exit lights?

Emergency lighting for fire evacuation should be located on wall or ceiling (for fire fighting double head)

Q:Where's the fire line coming from?. Installation of fire emergency lights, there is a line of fire line, I do not know what the fire line is

In the emergency lighting system diagram, the AC contactor normally opens, and the AC contactor is controlled by the fire control module.

Q:Installation of emergency lamp switch

When purchasing emergency modules, in addition to attention to models and power, but also to ask whether the supplier matches the original lamps.

Q:When will the car emergency lights be used?

fog driving days, foggy days due to poor line of sight, so not only should open double flashing lights, but also should open fog lamps to remind the attention of passing vehicles, as well as lighting for themselves.

Q:What brand is a fire emergency light?

Fire emergency lights are mainly divided into two categories: 1. fire emergency sign light, 2. fire emergency lighting, ceiling lamp