With the continuous development of my country's low-voltage electrical system and economic construction scale, the increase of power electronic equipment, especially the application of a large number of rectification, frequency conversion and switching power supply equipment, the waveform distortion in the line is becoming more and more serious.People have also put forward higher requirements for improving power supply capacity and safety.
In some power supply systems provided by independent transformers, there are problems of weak supervision and no guarantee for the safety of maintenance personnel. There are often safety hazards and economic losses such as fires caused by line equipment contact, leakage accidents and grounding short circuits.
In order to effectively solve the above problems, ASJ series residual current relay products can monitor the leakage current in the line. When the leakage current reaches or exceeds the set value, the internal relay will act and issue an alarm, and can be linked with the circuit breaker switch to quickly cut off the line. , to ensure line security. It plays an active role in avoiding or reducing various electrical shock accidents due to electrical insulation and other problems.
It can effectively prevent people from getting electric shock due to direct contact and indirect contact;
It can protect the safety of the electric load line so as to avoid the occurrence of electrical fire accidents in buildings;
It can be directly used as a signal relay to monitor power equipment;
It can be combined with other monitoring alarms, monitoring units or monitoring hosts to form a fire monitoring system;
It is of great significance to ensure the normal operation of the electrical system.
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