BP-2C provides fast and selective protection, monitoring and control for single busbar, single busbar with single bus coupler, double busbar, double busbar with up to 4 bus couplers, one-and-a-half breaker scheme, etc. The relay can operate correctly over a wide frequency range in order to accommodate power system frequency variations during disturbances.
This relay can sample the analog values from the traditional instrument transformers, or receive the sampled values from the electronic current and voltage transformers (via a merging unit). The binary inputs and outputs of this relay can be configured according to the demands of a practical engineering through the PRS IED Studio configuration tool auxiliary software, which can meet some special requirements of protection and control functions.
This relay can fully support the IEC61850 communication protocol and GOOSE function, and can completely meet the demands of a modern digitalized substation.

It integrates core protection functions like busbar differential and breaker failure protection, supporting IEC 61850, IEC 60617, and ANSI standards to provide reliable security for various busbar systems.


Built on a high-performance, modular hardware platform with flexible configuration. The powerful PRS IED Studio software allows flexible setup of protection logic, setting groups, and binary I/O for highly customized needs.

Innovatively combines six functions—protection, measurement, control, remote signaling, merging unit, and remote module—into one device, simplifying architecture and enhancing reliability.


Supports multiple GPS time sync methods (SNTP, PPS, IRIG-B) with dual-source (TmrType1/TmrType2) auto-switching, ensuring precise time-stamping for events and system coordination under all conditions.
Standard | IEC60225-1: 2009 |
Mounting Way | Flush mounted |
Merchanical size (width×high×deepth) | 482.6mm*266 mm *217.7 mm |
Housing material | Metallic plates, parts and screws: Steel Plastic parts: Polycarbonate |
Protection class | Front side:IP40 (IP52 with seal strip) Rear side, connection terminals: IP20 Other Sides: IP40 |
Communication Ports | 3 Ethernet network 2 RS-485 serial ports |
Communication Protocol | IEC61850, IEC60870-5-103, DNP3.0 or ModBus. |
Time Synchronization | SNTP, lEEE 1588, pulse per second (PPS) and IRlG-B |
Function | Busbar differential protection 87B Breaker failure protection 50BF BC/BS Dead Zone Protection 50DZ Feeder End-fault Protection 50FDZ Phase OverCurrent Protection 50/51P Ground OverCurrent Protection 50/51N Three-phase Overvoltage Protection 59P Three-phase Undervoltage Protection 27P Supervision and monitoring Fuse failure supervision 60 Current circuit supervision MCS 31 Circuit Breaker Status Supervision Disconnector Status Supervision |