In the power system, the transformer is a more important device. In general, the transformer can be divided into metering current transformer, measured current transformer and protective current transformer, next to Xiaobian as everyone Share the type of current transformer and the accuracy of the transformer!
1, metering current transformer
Settlement electricity fee
2, measurement current transformer
Measuring the current, calculation, etc.
3, protective current transformer
Current speed protection, overcurrent insurance, overload protection, etc .;
1. Verify current transformer precision
0.1 s. The error is 0.1%, which is often used to verify the accuracy of the measuring grade current transformer.
2. Metering Current Transformer Accuracy
0.2S 0.5. Error is 0.2% and 0.5%, the basis for the settlement of electricity bills, part of the 0.5 level
3. Measure the level current transformer
0.5, 1.0, 2.0, etc., generally used in current tables.
4. Protection Current Transformer Accuracy
10P10, 10P20, 5P10, 5P20, etc.
5. Special occasion transformer precision
In some special occasions, there are also precision and more refined current transformers, 0.005, 0.05, etc., less use.
The above is the relevant introduction of the "precision of current transformers and the accuracy of transformers", more questions about "current transformers" Welcome everyone to consult us!