0 Log In / Register Support Contact Sales
1.877.605.6777
+678.844.6777
Protection & Control
Transmission Protection



P543/4/5/6 Line Differential Protection Relay (Optional Distance)
  • 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
  • Line-Differential with Optional Subcycle Distance for 1 ½ Breaker Applications (P544/6) and with 5 quadrilateral or mho zones and setting free power swing detection (P543/5)
D60 Line Distance Relay
  • High-speed transmission line protection with three/single pole tripping for medium to extra high voltage transmission lines
  • Large color graphical HMI and high density I/O option available.
P44T Catenary Distance Protection
  • Main distance with autoreclose and backup protection features.
  • True subcycle distance tripping.
  • Protection of classic or auto transformer-fed catenaries.
  • Advanced load blinding prevents false tripping due to encroachment of heavy loads.
L90 Line Differential 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
  • Large color graphical HMI and high density I/O option available.
P441/2/4 Line Distance Management Relays
  • Distance Protection with Dual Algorithm
  • Full scheme multi-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection
  • Comprehensive communication options including IEC 61850 and redundant Ethernet ports, Hot standby-Ethernet & Cyber security
L60 Line Phase Comparison Relay
  • 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
  • Large color graphical HMI and high density I/O option available.
P54A/B/C/E Multi-Ended Line Differential Protection
  • Proven protection for up to 6 line or cable ends
  • Advanced communications options, supporting IEC 61850 Edition 2, DNP 3.0, IEC 60870-5-103
  • 1/3-pole tripping line differential protection with back-up and inbuilt reclosing (P54E/C)
P443/5/6 MiCOMho Distance Protection Relays
  • Distance protection for transmission (P443/6) and subtransmission (P445)
  • True subcycle distance protection - transmission class security and dependability(P443/6)
  • 2nd Harmonic detection based on Sensitive Earth Fault (SEF) input (P443/5)
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
L30 Line Current 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
  • Large color graphical HMI and high density I/O option available.
D30 Line Distance Relay
  • Cost effective high-speed, three pole, primary and backup distance protection.
  • Large color graphical HMI and high density I/O option available.
P841 Line Terminal Protection System
  • IN/VN ratings to show a generic description, change of descriptions
  • Mounting to split out the small 40TE case for software 80, change of descriptions
P541 Line Differential Protection System
  • 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
P591 Interface Unit - Fiber Optic to G.703
  • Standalone fiber optic to electrical communications interface unit
  • Allow connections to remote pulse code modulation multiplexing equipment
  • 10 TE case, suitable for flush mounting
  • Connections to ITU-T G.703 (co-directional)
P592 Interface Unit - Fiber Optic to V.35
  • Standalone fiber optic to electrical communications interface unit
  • Allow connections to remote pulse code modulation multiplexing equipment
  • 10 TE case, suitable for flush mounting
  • Connections to ITU-T V.35
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
P593 Interface Unit - Fiber Optic to X.21
  • Standalone fiber optic to electrical communications interface unit
  • Allow connections to remote pulse code modulation multiplexing equipment
  • 10 TE case, suitable for flush mounting
  • Connections to ITU-T X.21
P848 RPS Predictive Loss of Synchronisation
  • Rapid detection of Open Line condition and loss of synchronisation
  • Application for 60Hz Systems
P847 Phasor Measurement Unit
  • Measures accurate, time synchronised power system data
  • Communicates synchro-phasors according to IEEE C37.118.2-2011
  • Available with ancillary control and recording functions
  • Galvanic, fibre optic and redundant communication options (IEC 61850)
  • Synchrophasors available in dual streams