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P44 MiCOMho 5th Generation Line Distance Protection Relay
- Sub-Transmission/Transmission Distance Protection for 1 or 1 ½ Breaker applications.
- True subcycle distance protection for transmission class security and dependability.
- Distance phase preference tripping logic and transient earth fault detection (TEFD) for Petersen coil earthed and isolated systems.
- Integrated full colour display, for single-line diagram control of the protected bay.
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P54 MiCOM 5thGeneration Line Differential Protection Relay
- Line Differential Protection with Sub-Transmission/Transmission Distance Protection for 1 or 1 ½ Breaker applications.
- 2 or 3 End-to-end communications channels - multiplexed 64 kbps, E1 2Mbps, direct fibre, SONET/SDH and MPLS.
- Integrated full colour display, for single-line diagram control of the protected bay.
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P543/5/6 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)
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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.
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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.
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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.
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P442/4 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
< ul> The P442 is under last-time buy. Orders may be placed until 15th June 2026 and will be fulfilled based upon availability. As an alternative, please refer to P44 or P444.
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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.
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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)
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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)
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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.
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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.
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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
- The P841 is under last-time buy. Orders may be placed until 15th June 2025 and will be fulfilled based upon availability.
As an alternative, please refer to P84.
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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
- P541 is under last-time buy.Orders may be placed until 29th December 2024 and will be fulfilled based upon availability. As an alternative, please refer to P54
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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)
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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
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P542 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
- P542 is under last-time buy.Orders may be placed until 29th December 2024 and will be fulfilled based upon availability. As an alternative, please refer to P54
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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
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