The difference between Electrical Current Transformer and voltage transformer

Oct 23, 2021|

1. There is a certain difference in the structure between them. Electrical Current Transformer is generally made of thick wire. It should be used in series with the load that measures the current. The voltage transformer is a step-down transformer. Many main lines are needed to be connected to the high-voltage power grid under test and then used.


2. Short-circuit faults are allowed on the secondary side of Electrical Current Transformer, but open-circuit faults are not allowed, while voltage transformers are just the opposite. Open-circuit faults are allowed on the secondary side, but short-circuits are not allowed.


3. Their functions are also somewhat different. The voltage transformer is mainly used to proportionally switch the high voltage to a lower-level secondary voltage, and it is generally used in conjunction with a metering device.


4. Electrical Current Transformer manufacturers suggest that Electrical Current Transformer is to ensure the safe operation of the power system. It monitors and measures the operation of power equipment. Generally, it cannot be directly connected to high-voltage equipment, so the functions between them are very different. Big difference.


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