1. Development history of resistance tester:The loop resistance tester tells everyone that since the cable has been buried, the detection of the resistance tester has become a problem that must be solved. Initial cable fault roughing is performed using the bridge test principle. At that time, resist
Relay protection is a very important technology in the power system. Its function is to promptly remove the fault area when a power system fault occurs to protect the safety of equipment and personnel. In the substation, the relay protection system plays a vital role. It can identify faults in the p
Electrical equipment is an important part of modern industrial production, mainly including circuit breakers, isolating switches and load switches. These devices play different roles in the circuit, greatly improving production efficiency and the safety of electrical equipment. However, the differen
The load isolation switch is an important part of power equipment and has an important function to ensure the safe operation of power equipment. The load isolation switch ensures the safe operation of the equipment in dealing with circuit faults and power outages by isolating the power-fed equipment
Relay is an electrical device whose main function is to control small current to large current, thereby realizing the identification and conversion of signals in the circuit. It uses the principle of electromagnetic induction and uses the interaction between the current of the winding and the magnet
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