CSC-231 Digital Reactor Protection and Control Device

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