Changyuan Shenru ISA359G Capacitor Protection Device

The ISA-359G is an integrated protection, measurement, and control device for capacitors, providing functions such as protection, measurement, control, and operation.

The ISA-359G device is divided into four types based on protection functions: 359GA, 359GB, 359GC, and 359GD.

Basic Configuration

Protection Functions:
1. Phase current over-limit recording element with independent threshold
2. Two-stage current protection with independent enable/disable capability
3. Definite-time overvoltage protection
4. Loss of voltage protection with current blocking
5. Ungrounded zero-sequence directional overcurrent protection
6. Small resistance grounded zero-sequence overcurrent protection (only available in 359GB)
7. Unbalanced voltage or zero-sequence differential voltage protection (only available in 359GA and 359GB)
8. Unbalanced current or zero-sequence differential current protection (only available in 359GA and 359GB)
9. Capacitor bridge differential protection (only available in 359GC)
10. Capacitor phase differential voltage protection (only available in 359GD)
11. PT disconnection alarm, control circuit disconnection alarm
12. Closing lockout function after protection operation
13. Remote ground fault line selection test trip function for ungrounded systems (automatically determines if the fault is on the local line)
14. Lockout for simplified busbar protection
15. Independent operating circuit and fault recording