Product Introduction： This instrument is specially designed by our company for measuring the polarity of CT. It is small in size, light in weight, easy to operate, and easy to use. It is equipped with a set of special test lines for primary and secondary, which is very suit...

Product Introduction： The “Guidelines for On-site Inspection of Electric Energy Measurement Devices” of the Production and Operation Department of State Grid Corporation clearly stipulates that the actual secondary load of current transformers and voltage transformers mus...