PCS-921S Breaker Failure Relay-NR Electric Co. Ltd

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PCS-921S breaker failure relay integrates various protection functions, which is designed for the single- or three-pole circuit breaker on all voltage levels and provides comprehensive protection and control solutions. With its flexibility and the powerful PCS-Studio configuration tool, PCS-921S offers future-oriented system solutions with high investment security and low operating costs.

Protection and Control Supervision Recording Measurement Synchrophasor measurement Communication protocol Communication interface

Event Recorder including 1024 disturbance records, 1024 binary events, 1024 supervision events, 256 control logs and 1024 device logs.
64 disturbance waveforms records (The file format of disturbance recorder is compatible with international COMTRADE file.)
64 high-frequency waveforms records (The file format of disturbance recorder is compatible with international COMTRADE file.)

Current and voltage measurement at a 2.4KHz sampling rate
Current and voltage measurement at a 9.6KHz sampling rate
Energy metering (active and reactive energy are calculated in import respectively export direction)
Power (Apparent/Real/Reactive)
Power factor
Frequency

Synchronize with the GPS time by IRIG-B time source
Calculate synchronized phasors, including: Ua, Ub, Uc, U1, U2, U0, Ia, Ib, Ic, I1, I2, I0
Calculate analog values, including: active power (P), reactive power (Q), frequency, ROCOF (df/dt)
Transmit binary status of the IED to PDC (Phasor Data Concentrator) according to IEEE C37.118 standard
Realize high accurate measurement of the phasors and analogs according to the IEEE C37.118.1-2011 and IEEE C37.118.1a-2014 standard.
Communicate with PDC according to IEEE C37.118-2005 and IEEE C37.118.2-2011