Products Relays

L-PRO 4000 Transmission Line Protection Relay

The IEC 61850 station bus embedded L-PRO 4000 provides comprehensive distance based line protection, DFR quality fault oscillography, standard ring bus capability, swing recording, event logging, SCADA control and metering in a fully integrated protective relay solution.

Protection

4 zones of phase and ground distance functions - user-defined mho shapes or quadrilateral shapes and communication based schemes
Protection functions - IEEE devices 21P, 21N, 25/27/59 (25C), 27, 50BF, 50LS, 50/51/67, 50N/51N/67, 46/50/51/67, 59, 60, 68, 79, 81, Dead Line Pickup (SOTF) and Weak Infeed
1.0 to 1.3 cycle operation at 80% reach, ideal for transmission line applications
Ring bus capability - breaker failure and individual breaker monitoring
4 shot recloser with dead line/dead bus control and sync check
Single Pole Trip and Reclose
CCVT compensation
ProLogic - 12 control logic statements
8 setting groups with setting group logic

Recording, Monitoring and Metering

High quality recording - fault recording (96 samples/cycle), dynamic swing recording and event logging
Fault location - information provided by event log access or analog input point for SCADA
Breaker monitoring
Metering functions for each input connection

Substation Automation - Ethernet Ready

IEC 61850 Station Bus on a dedicated Optical/Copper Ethernet Port with various options
Enhanced DNP3 SCADA communication protocol including user selectable point lists, class support and multiple master station support
Modbus SCADA communication protocol
IRIG-B port (through BNC connector) for precise time stamping
Serial communication port
30 virtual inputs for local and remote control
Optional internal modem

Easy to Use

User-friendly relay setting and record analysis software (Windows® 2000/XP) included
Intuitive ASCII-terminal interface provides full local or remote access