What's the principle of low-frequency method for measuring the excitation characteristics of current transformers?Excitation characteristic test is the most commonly used and effective method for detecting the performance of protective current transformers.The composite error of current transformers

To use our GDVA-405 safely and efficiently, please follow the following safety regulations for operation:1) All technical index should keep in work condition before testing with Analyzer.2) Please follow associated international standards in a special application.3) Forbid high voltage or high curre

Last week we completed the production about GDVA-405 Automatic CT PT Analyzer and GDGK-307 Full Automatic Circuit Breaker Analyzer for our regular customer. And already arranged the shipment.GDVA-405 Automatic CT PT Analyzer is used to test all kinds of CT PT. The accuracy is 0.02%(Typical),0.1%(Gua