PCS-915IC Centralized Busbar Protection

The PCS-915IC centralized busbar protection provides comprehensive and scalable busbar and breaker failure protection of single busbar with/without section, double busbar with/without sections, double busbar with transfer bus, breaker-and-a-half......

  • Overview

The PCS-915IC centralized busbar protection provides comprehensive and scalable busbar and breaker failure protection of single busbar with/without section, double busbar with/without sections, double busbar with transfer bus, breaker-and-a-half arrangement and ring-breaker arrangement. It provides fast and secure low impedance busbar protection with sub-cycle tripping time. Check zone and discrimination zone of differential protection are equipped in the relay to guarantee reliability. Advanced and patented features are incorporated to improve sensitivity and security, such as innovative DPFC current differential protection and unique weighted CT saturation detection method.

The relay adopts scalable and expandable architecture to protect up to 24 bays, including bus coupler/section. The integrated frequency-tracking algorithm is used to acquire accurate current/voltage value. It provides the interfaces for station bus and process bus respectively and supports IEC 61850-8-1 MMS, GOOSE, IEC 61850-9-2 Sampling Value.