Reasons why switching power supplies produce noise:1. Internal reasons(1) Noise generated during use of switching power supply. During the use of the switching power supply, factors such as current and resistance will instantly change, causing changes in the internal conditions of the switching powe
1. Substation capacitor charged detection method1. Withstand voltage testWithstand voltage testing is one of the main methods to test the ability of electrical appliances, electrical equipment, electrical devices, electrical circuits and electrical safety equipment to withstand overvoltage. It is ma
thermal relayThermal relay is a relay that uses the thermal effect generated by the current flowing through the relay to make corresponding actions. The delayed action time of the thermal relay shortens as the passing current increases. It is mainly used for motor protection and control of the heati
Transformers are important electrical equipment in power operation and play an important role in the production of industrial and mining enterprises. Transformer on-load voltage regulating switches often malfunction during operation. The troubleshooting methods and measures are very important for th
Working principle of leakage switchDuring normal operation, there is no leakage current in the circuit except the operating current through the leakage protector. At this time, the currents flowing through the zero-sequence transformer (detection transformer) are equal in magnitude and opposite in d
中文
English
+86-312-6775656
+86 13731210226
sales03@bdhuazheng.com
