Changyuan Shenrui ISA-392GB Capacitor Protection and Control Device

The ISA-392GB is an integrated capacitor protection and control device that provides protection, monitoring, control, and operational functions for capacitors.

1.1 Basic Configuration

Protection Functions
1. Three-stage current protection that can be independently enabled or disabled
2. Definite-time overvoltage protection
3. Current-blocked undervoltage protection
4. Inverse-time overcurrent protection
5. Zero-sequence overcurrent protection
6. Unbalanced voltage or zero-sequence differential voltage protection
7. Unbalanced current or zero-sequence differential current protection
8. PT disconnection alarm, control circuit disconnection alarm
9. Independent tripping circuit and fault recording
Monitoring and Control Functions:
1. 3 position remote signals collected via the tripping circuit; 20 remote input signals, with options for blocking reclosing, external tripping input, external alarm input, external reset, and device maintenance; multiple soft remote signals, including general fault signal, reclosing charging flag, and protection soft setting
2. 18 remote measurements including Ia, Ib, Ic, Ua, Ub, Uc, 3I01, Uab, Ubc, Uca, Pa, Pb, Q, S, COSφ, Fr
3. Remote control of switches, with recording and statistics of remote operations
4. Large-capacity event recording, SOE recording, self-test recording, instantaneous protection blocking recording, and printing (optional function)
5. Harmonic analysis function up to the 13th order