Multi-function Bus Protection Relay Type - Rack Mount, 6 Ct Inputs, Low Impedance Design | Differential Protection, Scada Control, Event Logging, Fault Oscillography

B-PRO 4000 relay provides bus and substation differential protection (low impedance) with CT saturation security, integrated breaker failure, overcurrent protection and SCADA control in a fully integrated protective relay solution. The B-PRO 4000 relay also provides control, automation, metering, monitoring, high capacity for DFR quality fault oscillography, dynamic swing recording and sequence of events logging. The B-PRO 4000 relay is suitable for simple bus applications with up to 6 feeders and 2 differential zones with breaker failure, or 4 feeders and 1 transformer, including separate full transformer differential protection.

Product Application:
Bus and substation differential protection (low-impedance)
Re-configurable simple bus application up to 6 feeders and 2 differential zones
Separate Transformer differential protection
6 sets of CT inputs for differential protection (18 currents) using percentage slope characteristic for security on external faults
Low impedance design allows different CT ratios for each of the 6 inputs
Backup overcurrent and breaker failure for each input current
User defined directional control of overcurrent functions for networked lines
3 phase voltage inputs to apply over/under voltage and frequency functions
1 or 2 separate differential zones - bus and transformer or Bus 1 and Bus 2 for multiple buses
ProLog