1 The impact closing test of the transformer does not necessarily have to be conducted from the high voltage side, which is related to the application of the transformer. Generally, this test is combined with the operation of the transformer. Since most of the transformers we use are step-down trans
Urgent defects:Equipment or facilities directly threaten the safe operation and need to be dealt with immediately, which may cause equipment damage, personal casualties, large-scale power outages, fires and other accidents at any time; the treatment should not exceed 24 hours.Major flaws:Those that
Transformers are stationary equipment that operate continuously, with relatively reliable operation and less chance of failure. However, since most transformers are installed outdoors and are affected by the load they bear during operation and the short-circuit faults of the power system, various fa
What is a secondary loop?In a substation, various types of relay protection devices, measurement and control devices, safety automatic devices, fault recording devices, etc. are collectively referred to as secondary equipment.The so-called secondary circuit is an electrical circuit formed by connect
01 Principle and function of relayThe principle of a relay is an electrical component based on the phenomenon of electromagnetic induction. Relays are composed of coils, iron cores and contacts. When the coil is energized, the magnetic field generated magnetizes the iron core, which in turn attracts
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