PCS-915IC Centralized Busbar Relay

Product catalog summary

Overview
The PCS-915IC is a centralized busbar relay designed for comprehensive busbar protection across various voltage levels, capable of protecting up to 25 bays. It offers fast, secure low impedance protection with sub-cycle tripping time and incorporates advanced technologies for enhanced sensitivity and security.

Specifications
- Compatible with IEC 61850 station and process bus applications.
- Supports IEC 61850-8-1 MMS, GOOSE, and IEC 61850-9-2 Sampling Value.
- Equipped with RJ-45 port for testing and setting.

Protection and Control Functions
- Busbar Current Differential Protection (87B): Includes phase current differential and DPFC differential protection with voltage control and CT saturation blocking.
- Bus Coupler/Section Protection: Features breaker failure, dead zone, pole disagreement, switch-onto-fault, and overcurrent protection.
- Feeder Protection: Similar protection features as bus coupler/section.
- Automatic voltage and current drift adjustment.

Monitoring and Measurement
- Dynamic busbar replica, CT and VT circuit supervision, self-diagnostics.
- Event and disturbance recorders compatible with COMTRADE format.
- Clock synchronization via IRIG-B, SNTP, PPS, and PPM.

Communication
- Up to four 10Base-T/100Base-TX copper Ethernet ports and two 100Base-FX optical Ethernet ports.
- Two RS-485 serial ports for communication and one for clock synchronization.
- Optional Sampling Value and GOOSE communication module.

User Interface
- HMI interface with LCD and keypad.
- Front RJ-45 port for testing and setting.
- Rear RS-232 or RS-485 port for printer.
- Language selection and PCS-Explorer assistant software.

Features
- Integrates NR Electric's DPFC differential element for fast fault clearance.
- Supports up to 25 bays with cross-phase algorithms.
- CT ratio compensation and adaptive weighted anti-saturation algorithm.
- Check and discrimination zone elements for fault identification.
- Continuous feeder disconnector status monitoring.
- Redundant hardware for reliability with independent data acquisition and processing circuits.
- Programmable hardware and logic for customized applications.
- Supports IEC-61850 communication standards with up to six Ethernet ports.

Catalog excerpts

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.

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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 weak-sourced...

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• 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 balance...

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