Current transformer (TA) is the important component to contact the primary and secondary equipment of power system, the power flow acquired by it is the basis of relay protection operation, and is an important method of accurately measuring the measuring instrument. The normal working of the current transformer and its secondary circuit is extremely important for the normal operation of transformer substation secondary equipment.

DS3630 device of this project is suitable for 220 ~ 500 kv substation TA complete sets of digital surveillance of online monitoring devices. DS3630 with functions of TA secondary wiring polarity discrimination, TA circuit disconnected discrimination, TA saturated discrimination, TA cable wear discrimination, TA remanence monitoring and other functions.