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Line Protection

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  Interactive Selector Guide - Line Differential
  Interactive Selector Guide - Line Distance
  Spotlight Application
  Typical Applications
  Transmission Principles & Protection
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  Legacy Transmission Protection

  
GE's transformer protection solutions
Line Protection

GE's transmission protection solutions deliver the speed and security necessary for advanced transmission line protection. Our specialized technology teams are well versed in transmission protection theory and build protection and control solutions that can be configured to meet a variety of applications from large to small, underground and overhead.

Restoring service to urban areas quickly requires fast and accurate fault location. Maintenance crews rely on the advanced functions of the Multilin L90 line current differential system to rapidly pinpoint the fault location.
Learn more about this spotlight application.

Interactive Selector Guide – Line Differential Interactive Selector Guide – Line Distance

Line Differential with Distance - Transmission
MiCOM P543/4/5/6 Agile

P54 MiCOM 5th Generation The P54, part of the MiCOM P40 Agile 5th Generation family, delivers high performance processing and a graphical HMI as standard. A cost-effective range of transmission/sub-transmission class protection relays providing comprehensive line differential protection for up-to 3 line ends, with in-built subcycle transmission class distance and directional earth fault protection. This range of products is ideal for HV, EHV and UHV applications on lines and cables for 1 or 2 breaker applications with patented adaptive auto-reclose functionality.

MiCOM P543/4/5/6 Agile

MiCOM P543/5/6 Agile The P543, P545 & P546 models, part of the MiCOM P40 Agile family of protection relays, constitute a cost effective range of transmission-class protection relays providing comprehensive line differential protection for 2 or 3 line ends, subcycle distance and directional earth fault protection. This range of products is ideal for HV, EHV and UHV applications on lines and cables of any length for 1 or 2 CB applications with neutral differential for high impedance faults.

Multilin UR protection and control relay platform

Multilin L90 The L90, a member of the UR family of protection relays, is a transmission-class protection relay providing comprehensive line differential protection for 2 or 3 line ends, subcycle distance and directional earth fault protection. It is ideal for HV, EHV and UHV applications on lines and cables of any length for 1 or 2 CB applications. It offers a large color LCD display and integrated PMU.

Line Differential with Distance - Distribution
MiCOM P54A/B/C/E Agile

MiCOM P54 A/B/C/E Agile The P54A/B/C/E models, part of the MiCOM P40 Agile family of protection relays, provides cost effective high speed multi-ended line differential protection for overhead line and cables up to 6 ends. The P54C and P54E support a high density of binary inputs/outputs, while the P54A and P54B offer compact line differential protection in a half-rack case.

Distance Protection
MiCOM P443, P446 Agile

P44 MiCOMho 5th Generation The P44, part of the MiCOM P40 Agile 5th Generation family, delivers high performance processing and a graphical HMI as standard. A range of transmission/sub-transmission class protection relays providing up to 9 zones of subcycle distance protection with both mho/quad characteristics and delta directional comparison (incremental) protection. In addition, distance phase preference tripping logic and transient earth fault detection (TEFD) for Petersen coil earthed and isolated systems. The P44 range of products is ideal for HV, EHV and UHV applications on lines and cables for 1 or 2 breaker applications with patented adaptive auto-reclose functionality.

MiCOM P443, P446 Agile

MiCOM P443, P446 Agile The P443 and P446 models, part of the MiCOM P40 Agile family of protection relays, constitute a range of transmission-class protection relays that provide subcycle, 6 to 9 zone, distance protection with mho/quad characteristics, delta directional comparison (incremental) protection and “Virtual current polarising” of Directional Earth/Ground Fault (DEF) and settings free PSB for 1 or 2 CBs.

MiCOM P441, P442, P444 Agile

MiCOM P444 AgileThe P444 model, part of the MiCOM P40 Agile family of protection relays, is a numerical distance relay that provides flexible, fast and reliable protection of transmission and sub-transmission lines. It includes full scheme 5-zone distance protection with quad characteristics, plus directional earth fault (DEF) for single breaker applications

Multilin UR protection and control relay platform

Multilin D60 The D60, a member of the UR family of protection relays, offers transmission-class protection that provides subcycle, 6 zone, distance protection with mho/quad characteristics and Directional Earth/Ground Fault (DEF) for 1 or 2 CBs. It offers a large color LCD display and integrated PMU.

Railway Catenary
MiCOM P44T Agile

MiCOM P44T Agile The P44T provides protection for railway catenary lines, supplementing a 5 zone distance main protection are a host of backup protection, thermal protection, recording, control, measurement and monitoring features. Wrong phase coupling, panto flash over, train startup and Delta I for high impedance faults protection are also included. With independently settable right and left hand side resistive reaches for each zone the P44T suits routes hosting regenerative braking trains. Protection of classic or auto transformer-fed catenaries in systems with nominal frequencies of 50 or 60 Hz.

Special Applications
Multilin UR protection and control relay platform

Multilin L30 Current differential protection for sub-transmission and MV lines and cables. Part of the UR family of relays. Includes voltage based protection, metering and check synchronizing. It offers a large color LCD display, PMU and advanced Ethernet communications with IEC 61850 station and process bus.

Multilin UR protection and control relay platform

Multilin L60 The L60, a member of the UR family of protection relays, provides comprehensive phase comparison line protection including 3 zone distance protection. It offers a large color LCD display.

Multilin UR protection and control relay platform

Multilin D30 5 zone distance protection with quad/mho characteristics for 3 pole tripping and autoreclose. Part of the UR family. Primary protection for sub-transmission lines, backup protection for MV to EHV lines. It offers a large color LCD display and integrated PMU.

Multilin UR protection and control relay platform

Multilin C70 The C70 provides both the bank and system protection schemes for shunt capacitor banks. The current and voltage-based protection functions provide sensitive protection for grounded, ungrounded single, and parallel capacitor banks and banks with taps.

Accessories
MiCOM P59x Agile

MiCOM P59x Agile This range of standalone units enables the MiCOM Agile P54x current differential relays and MiCOM relays with InterMiCOM64 inter relay communications to be connected to remote pulse code modulation (PCM) multiplexing equipment.

Not finding the line protection product that you’re looking for? View legacy line protection products.

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