Beijing Sifang CSC-231 Digital Reactor Protection and Control Device

1.1 Application Scope
The CSC-231 digital reactor protection is suitable for low-voltage reactor protection at voltage levels of 66kV and below, and can be installed locally in switchgear cabinets.
1.2 Main Functions
1.2.1 Protection Functions
Differential instantaneous protection for faults within the protection zone
Percentage differential protection with second harmonic restraint for faults within the protection zone
TA break detection and differential protection blocking function
Non-electrical protection
Two-stage definite-time overcurrent protection
Zero-sequence overcurrent protection
Overload protection (trip or alarm signal optional)
Undervoltage protection
1.2.2 Measurement and Control Functions
15 channels of digital input for telemetry acquisition, device status change telemetry, and fault telemetry
Normal remote control of circuit breaker opening and closing
Telemetry of analog quantities such as Ua, Ub, Uc, Ia, Ic, P, Q, COSф
Various event SOE, etc.
2 channels of pulse P and Q input