How To Know If The Surge Protector Is Damaged

The surge protector can discharge the lightning current that invades the line to the grounding device, thereby protecting the electrical equipment from overvoltage. Such an important device, if damaged and not replaced in time, will endanger the safe operation of the electrical equipment. The surge protector is installed in the distribution box. How can we know whether the surge protector is damaged?

The surge protection device has a remote signal terminal, which is actually a simple relay with a normally open end, a normally closed end and a grounding end. Usually we connect its normally open end and normally closed end to the corresponding terminals of the signal collector, and connect the grounding end to the grounding device. Through the remote signal, we can understand the daily working status of the surge protector. When the surge protector deteriorates and fails, we can replace it in time to ensure the smoothness of the lightning protection branch.

So what is the working principle of the surge protective device remote signal terminal? As a device that can provide alarm information, the remote signal is usually connected to the tripping device inside the surge protector. Under normal working conditions, it is in a short-circuit state and outputs a short-circuit signal; when the surge protector overheats and causes the trip device to disconnect, the remote signal device (relay) will be triggered, the normally closed end will be disconnected, the normally open end will be closed, and an open circuit signal will be transmitted to the signal collector.

In this way, we can understand the working status of the surge protector. When the surge protector is damaged, the alarm can be issued in time, and the maintenance personnel can perform maintenance in time to reduce the incidence of accidents. Therefore, when selecting a surge protector, try to choose a surge protector with a remote signal terminal.