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 broken wire 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 remote signal acquisition, device remote signal change, and accident remote signal

? Remote control of normal circuit breaker opening and closing

? Remote measurement of analog quantities such as Ua, Ub, Uc, Ia, Ic, P, Q, COSφ

? Various event SOE, etc.

? 2 channels of pulse P and Q input