The surge protector can discharge the lightning current that penetrates the line to the grounding device, thereby protecting the electrical equipment from overvoltage. If such an important device is damaged and not replaced in time, it will endanger the safe operation of the electrical equipment. . The surge protector is installed in the distribution box, how can we know if the surge protector has been damaged? The following Xiaobian will give you an introduction.
Composite surge protector
The surge protector has a remote signal terminal. In fact, it is a simple relay with a normally open terminal, a normally closed terminal and a ground terminal. Usually we connect its normally open end and normally closed end to the corresponding terminals of the signal collector respectively, and connect the ground end to the grounding device. Through remote signaling, we can know 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.
Surge protector remote signal terminal
So what is the working principle of the remote signaling terminal of the surge protector? As a device that can provide alarm information, remote signaling is usually connected to the trip device inside the surge protector. Under normal operation, it is in a short-circuit state and outputs a short-circuit signal; when the surge protector is overheated and the tripping device is disconnected, the remote signaling device (relay) will be triggered, the normally closed end is disconnected, and the normally open end closed, transmits an open-circuit signal to the signal collector.
In this way, we can know the working status of the surge protector. When the surge protector is damaged, we can call the police in time, and the maintenance personnel can maintain it in time and reduce the incidence of accidents. Therefore, we are carrying out surge protection. When selecting a surge protector, try to choose a surge protector with remote signaling terminals.
