JYH-B instrument transformer characteristic tester can measure the turns ratio, polarity and volt-ampere characteristics of the current transformers and voltage transformers. It has large power regulating transformer, step-up transformer and current-up device inside. The tester is widely used in the routine test of voltage and current transformers.
Loop resistance testing meter is suitable for the contact resistance measurement of HV switchgears and circuit breakers. It can also measure the primary resistance of the current transformers.