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PCS-9671S Transformer Relay
PCS-9671S has been designed specifically for the protection of various type power transformers (up to 3 measuring points), including two-winding transformers, three-winding transformers, auto-transformers, as well as shunt reactors, in 110kV voltage level and below. PCS-9671S provides the main protection elements, such as: current differential protection and restricted earth fault protection. With its modular structure, flexibility and the powerful PCS-Studio engineering tool, PCS-9671S offers future-oriented system solutions with high investment security and low operating costs.
- Protection Functions Supervision Functions Measurement and Metering Communication
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Transformer differential protection (87T)
Inrush blocking
CT saturation blocking
Overexcitation blocking
CT circuit failure blocking
Amplitude compensation
Phase angle compensation
Reactor differential protection (87R)
Restricted earth-fault protection (64REF)
Phase overcurrent protection (50/51P)
Earth-fault protection (50/51G)
Current drift auto adjustment
CT circuit failure Supervision (CTS)
Tripping circuit supervision (TCS)
Self diagnostic
Powerful faults recording (max. buffer for 10,000 sampled points at 1.2 or 9.6 kHz)
Event recorder including 1024 disturbance records, 1024 binary events, 1024 supervision events, 256 control logs and 1024 device logs
Disturbance recorder including 64 disturbance records with waveforms (the file format of disturbance recorder is compatible with international COMTRADE file)
Single line diagram representation in display
Positive sequence currents, zero sequence currents and phase angles
DC analogue inputs (0~±20mA or 0~±10V)
DC analogue outputs (4~20mA, 0~10V, 0~5V or 0~20mA)
Support of various protocols
Modbus, DNP3.0, IEC 60870-5-103, IEC 61850 Ed.1 & Ed.2, IEC 61850 MMS Server, IEC 61850-8-1 GOOSE,IEC 62439 Parallel Redundancy Protocol (PRP), IEC 62439 High-availability Seamless Ring (HSR) Redundancy Protocol, IEEE 802.1w Rapid Spanning Tree Protocol (RSTP).
Up to four 10Base-T/100Base-TX copper Ethernet ports
Up to four 100Base-FX optical Ethernet ports
Two RS-485 serial ports for communication, the second one could be used as a RS-232 port for printer.
One RS-485/TTL serial port for clock synchronization
One BNC port for clock synchronization
One ST-connector port for clock synchronization
Two RJ45 debugging ports (front and rear)