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The current in power generation, transformation, transmission, distribution, and consumption lines varies greatly, ranging from a few amperes to tens of thousands of amperes. For the convenience of measurement, protection, and control, it is necessary to convert to a relatively uniform current. In addition, the volta…
2024-09-12
Capacitive voltage transformers are used for AC voltage division. Capacitive AC voltage division is similar to resistive voltage division. The difference is that capacitive voltage dividers divide voltage based on the capacitance impedance value, while resistive voltage dividers divide voltage based on the resi…
2024-08-24
(1) Unbalanced three-phase voltage indication: One phase decreases (can be zero), the other two phases are normal, the line voltage is abnormal, or accompanied by sound or light signals, which may be due to the melting of the high or low voltage fuse of the transformer; (2) Neutral point non effective grounding…
2024-07-14
Before putting the voltage transformer into operation, it should be tested and inspected according to the specified items in the regulations. For example, polarity measurement, connection group, insulation shaking, nuclear phase sequence, etc. 2. The wiring of the voltage transformer should ensure its correctne…
2024-06-15
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