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Protection & Control
Transmission Protection

L90 Complete Line Protection System
  • High-speed current differential and full distance protection with three and single pole tripping
  • Complete and advanced line protection system intended for application on overhead transmission lines, series compensated lines, and high voltage underground cables
L30 Line Differential System
  • High-speed current differential protection suited to sub-transmission and distribution protection.
  • Advanced current differential relay intended for application on sub-transmission and distribution lines
P546 Current Differential Protection (Option Distance)
  • Line-Differential with Optional Subcycle Distance for 1 ½ Breaker Applications
  • Advanced communications supporting IEC 61850 Ed.1 & Ed.2, redundant Ethernet, self-healing ring, RSTP, dual homing or PRP topologies
  • Full suite of monitoring, control and recording capabilities plus fault locator, autoreclose and check synchronism
P544 Line Differential Protection Relay (Option Distance)
  • Line-Differential with Optional Subcycle Distance for 1 ½ Breaker Applications
  • Advanced communications supporting IEC 61850 Ed.1 & Ed.2, redundant Ethernet, self-healing ring, RSTP, dual homing or PRP topologies
  • Full suite of monitoring, control and recording capabilities plus fault locator, autoreclose and check synchronism
P545 Line Differential Protection Relay (Option Distance)
  • Line-Differential with Optional Subcycle Distance with 5 quadrilateral or mho zones and setting free power swing detection
  • Advanced communications supporting IEC 61850 Ed.1 & Ed.2, redundant Ethernet, self-healing ring, RSTP, dual homing or PRP topologies
  • Full suite of monitoring, control and recording capabilities plus fault locator, autoreclose and check synchronism
P543 Line Differential Protection Relay (Option Distance)
  • Line-Differential with Optional Subcycle Distance with 5 quadrilateral or mho zones and setting free power swing detection
  • Advanced communications supporting IEC 61850 Ed.1 & Ed.2, redundant Ethernet, self-healing ring, RSTP, dual homing or PRP topologies
  • Full suite of monitoring, control and recording capabilities plus fault locator, autoreclose and check synchronism
P542 Line Differential Protection Relay
  • Line differential protection with overcurrent backup protection and autoreclose with graphical programmable scheme logic (PSL)
  • Proven biased characteristic for distribution/sub-transmission networks
  • Advanced communications options, supporting IEC 60870-5-103, Modbus & Courier easing integration into SCADA systems
P541 Line-Differential Protection Relay
  • Line differential protection with overcurrent backup protection with graphical programmable scheme logic (PSL)
  • Proven biased characteristic for distribution/sub-transmission networks
  • Advanced communications options, supporting IEC 60870-5-103, Modbus & Courier easing integration into SCADA systems
L60 Line Phase Comparison System
  • Flexible phase comparison protection for HV and EHV transmission lines.
  • Advanced line phase comparison relay intended for application on overhead transmission lines, series compensated lines, and high voltage underground cables
P547 Phase Comparison Relay with Distance Protection
  • Phase Comparison with Distance - unit protection, subcycle distance and directional earth fault (DEF)
  • Advanced charging current compensation and angle-shifting to avoid corona issues
  • Advanced communications supporting IEC 61850 redundant Ethernet, self healing ring, RSTP, dual homing or PRP topologies
D90Plus Line Distance Protection System
  • Sub-cycle line distance protection & advanced automation controller.
  • Suitable for protecting transmission lines and cables including lines equipped with series compensation
D60 Line Distance Protection System
  • High-speed transmission line protection with three/single pole tripping for medium to extra high voltage transmission lines
D30 Line Distance Protection System
  • Cost effective high-speed, three pole, primary and backup distance protection.
C90Plus Controller
  • Advanced automation & control and high accuracy digital fault recording.
  • Specifically designed for the unique automation requirements of utilities, substation environments and industrial power systems.
C70 Capacitor Bank Protection
  • Integrated protection, control and monitoring for capacitor banks.
  • Current and voltage-based protection functions provide sensitive protection for grounded, ungrounded single and parallel capacitor banks and banks with taps
P441 Distance Protection Relay
  • Full scheme 5-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection
  • Highly flexible, allowing application on any power system network
  • Unparalleled speed, security and selectivity
P442 Distance Protection Relay
  • Full scheme 5-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection
  • Advanced load blinding (Load Encroachment or Load Avoidance) to avoid tripping in highly loaded circuits
  • Comprehensive communication options including IEC 61850 and redundant Ethernet ports, Hot standby-Ethernet & Cyber security
P443 MiCOMho High Performance Distance Protection Relay
  • Full scheme 6-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection
  • True subcycle distance protection - transmission class security and dependability
  • 2nd Harmonic detection based on Sensitive Earth Fault (SEF) input
P444 Line-Distance Management Relay for Transmission
  • Full scheme 6-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection
  • Advanced load blinding (Load Encroachment or Load Avoidance) to avoid tripping in highly loaded circuits
  • Comprehensive communication options including IEC 61850 and redundant Ethernet ports, Hot standby-Ethernet & Cyber security
  • IEC61850-9-2 interface option allows integration within digital substation process bus architectures
P445 MiCOMho High Performance Distance Protection
  • Full scheme 5-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection
  • 2nd Harmonic detection based on Sensitive Earth Fault (SEF) input
  • Available in 40/60TE case with 3 different I/O configurations to suit different applications and available panel space
  • Ideal for “mho” market and retrofit projects due to small size (40TE)
P446 MiCOMho High Performance Distance Protection Relay
  • Full scheme 5-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection
  • True subcycle distance protection - transmission class security and dependability
  • Management of dual breaker autoreclose logic schemes with synchrocheck for both breakers