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Multi-function Transmission Line Protection Relay Type : L-PRO 4000
     
   

 

L-PRO 4000 is a digital, microprocessor-based line distance protection system that provides comprehensive distance based line protection for medium to extra-high-voltage transmission lines. Apply the L-PRO 4000 system for high-speed distance and directional protection and complete control in multi-breaker applications typically found in ring or breaker-and-a-half substation arrangements.


Application

  • Primary and back-up protection on transmission and sub-transmission lines
  • Overhead lines and underground cables
  • Back-up protection for generators, transformers and reactors
  • Ideal for multi-circuit line applications to monitor mutual coupling
  • Fully integrated breaker protection and control for 2 breakers
  • Single and multi breaker applications (i.e. ring-bus and breaker-and-a-half capability, including breaker failure and individual breaker monitoring requiring single pole/three-pole auto-reclosing)
 
Standard Features
 
IEC 61850 communication via optical ports
Faster processing capability
Enhanced user configurable logic
Single pole trip and reclose
High-speed four-zone user defined mho or quad phase and ground distance protection
6 voltage channels and 12 current channels for use as small DFR for HV substations
Designed for ring bus and breaker-and a half applications-breaker failure and individual breaker monitoring
4 shot recloser with dead line/dead bus control and sync check
96 samples/cycle fault recording, swing recording and event logging (1ms)
Protection functions include 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
Front panel USB and 100BASE-TX RJ-45 Ethernet port interfaces (readily accommodate modern standard laptops)Substation automation cost – includes IEC61850 protocol to display and transfer operational data via local-area network (LAN) for local HMI and wide-area network (WAN) for remote monitoring SCADA
Product setting time – 240 x 128 LCD graphical user interface provides convenient means to check/change specific settings and parametersFlexible programmable logic for building customized schemes with ProLogic™ statements – 24 control logic statements (total of 192 statements)
Enhanced DNP3.0 Level 2 SCADA communication protocol including user-selectable point lists, class support and multiple master station supportSubstation engineering, installation and commissioning cost and times – IEC 61850 GOOSE messages communicate high-speed information between IED’s on the substation LAN (including transfer trips, interlocking, load-shedding, and commands)
Protection functions include 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 InfeedExceptional fault recording capabilities with 96 s/cycle, all channels with events (best combination of waveform accuracy and file size)
 
Please ask for a quote     info@erlmint.com
 
 
Qty. 
Documentation
Brochure

L-PRO 4000.pdf

Manual
L-PRO 4000 Manual
 
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