Beijing Sifang CSC-241C Digital Plant/Station Transformer Protection, Measurement and Control Device

1.1 Device Introduction
This device is suitable for the protection, measurement, and control of station service or plant transformers and can be installed locally in switchgear.
1.1.1 Protection Functions
a) Instantaneous overcurrent protection for phase-to-phase faults;
b) Overcurrent protection;
c) Overload alarm or trip function;
d) Current acceleration protection;
e) Zero-sequence current protection, which can operate in either definite-time or inverse-time mode;
f) Undervoltage protection with current blocking;
g) Non-electrical protection;
h) F-C overcurrent blocking function.
1.1.2 Measurement and Control Functions
a) 15-channel digital input for telemetry acquisition, device status change telemetry, and fault telemetry;
b) Remote open/close control for normal circuit breakers;
c) Telemetry of analog quantities such as Ua, Ub, Uc, Ia, Ib, Ic, P, Q, cos?;
d) Various event SOE, etc.;
e) 2-channel pulse input for P and Q.
1.1.3 Other Functions
a) PT broken wire alarm;
b) Control circuit broken wire alarm;
c) Spring not charged alarm;
d) Fault recording;
e) 32 setting groups;
f) 4-20mA output.