Abnormal Conditions and Treatments of Transformers

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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

Technical and Economic Advantages of UHV DC Transmission

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Compared with ultra-high voltage DC at the ±600 kV level and below, the main technical and economic advantages of UHV DC transmission can be summarized in the following six aspects:1. Large conveying capacity. Using 4000 ampere thyristor valves, the ±800 kV DC UHV transmission capacity can reach 6

Analysis and Treatment of Three-Phase Asynchronous Motor Winding Faults

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1. Winding grounding Refers to the grounding caused by damage to the insulation between the winding and the chassis. 1. Fault phenomenon The casing is electrified, the control circuit is out of control, and the winding

A Brief Analysis of Common Faults of Batteries

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1. Plate vulcanization A layer of poorly conductive, white, coarse-grained lead sulfate is produced on the battery plate. During normal charging, it cannot be completely converted into lead and lead dioxide. This phenomenon is called "lead sulfate hardening" or "sulfide" fo

Collection of Common Problems During Lead-Acid Battery Repair Process

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1. Can the terminal voltage of the battery be used to judge the quality of the battery?Answer: No. Low terminal voltage is caused by battery short circuit, open circuit and lack of power.2. Does the repair process require opening the battery?Answer: No need.3. Under what circumstances will vulcaniza