Causes and Preventive Measures for Burnt Circuit Breaker Opening and Closing Coils

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The circuit breaker is a type of load switch with short-circuit and overload protection functions. The short-circuit protection function is realized by an electromagnetic coil. Because of its complete protection functions, easy maintenance and use, it is widely used in power systems. This article in

DC Power Supply Quality Inspection Methods and Main Functions

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The technical indicators of DC power supply can be divided into two categories. One is the characteristic indicators, which usually include the voltage allowed to be transmitted, the voltage and current output and the voltage adjustment range. Today I will show you the DC power supply quality detect

How to Judge and Deal with These Abnormal Phenomena in the Transformer?

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1. Analysis of abnormal operation of transformer(1) The transformer sound is abnormalAs soon as the transformer is powered on, there will be a buzzing sound, which is mainly due to the high-voltage magnetic flux. During normal operation, the sound of the transformer is uniform. When there are other

The Function and Working Principle of Safety Relay

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The function and working principle of safety relayThe so-called "safety relay" is not a "fault-free relay". It has a forced guide contact structure to ensure safety in the event of contact welding. This is completely different from ordinary relays. .Safety relays are used in the

The 7 Most Common Knowledge Points in Power Systems

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Common busbar wiring methods1. Single busbar wiring: Single busbar wiring has the advantages of simple and clear, less equipment, small investment, convenient operation and conducive to expansion, but its reliability and flexibility are poor. When the busbar or busbar isolating switch fails or is re