PCS-915IC Centralized Busbar Relay
3Pages

PCS-915ICCentralized Busbar Relay Busbar Protection The PCS-915IC centralized-type relay is a compact and comprehensive busbar protection system which is adaptive to various busbar arrangement of various voltage levels. The relay provides flexible configuration of the busbar topologies to meet specific applications. Due to its extensive CT input and I/O capability, the PCS-915IC is capable to protect up to 25 bays. 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 minimize the outage zone. Advanced and patented technologies are incorporated to improve sensitivity and security, such as weighted CT saturation detection method, DPFC current differential protection. The PCS-915IC is compatible with IEC 61850 station bus and process bus applications. It supports IEC 61850-8-1 MMS, GOOSE and IEC 61850-9-2 Sampling Value. The RJ-45 faceplate port is provided for testing and setting, allowing for easier commissioning and maintenance.

Protection Automation Control Functions Protection and Control • Busbar current differential protection (87B) It consists of phase current differential protection and DPFC differential protection. Voltage control element and CT saturation blocking element are available to supervise the current differential protection. - Phase current differential protection Dual restraint coefficients are provided to enhance the sensitivity of weak-sourced busbar with opened bus coupler/section. - Phase current differential protection Dual restraint coefficients are provided to enhance the sensitivity of...

• Language selection - English + selected language • Assistant software - PCS-Explorer Features • Besides conventional current differential element, the relay also integrated with NR Electric's innovative DPFC differential element for fast and sensitive fault clearance. The differential protection typical operation time is within 20ms after fault. • This device provides all-in-one busbar protection solution with up to 25 bays. Cross phase algorithms such as negative/zero sequence voltage and negative/zero sequence overcurrent elements are available. • CT ratio compensation is adapted to...