GE Logo
GE's Transmission protection solutions
Category banner
Protection Relays
Line Protection

Home > Grid Automation > Protection Relays > Line Protection

Related Links
  Interactive Selector Guide - Line Differential
  Interactive Selector Guide - Line Distance
  Spotlight Application
  Typical Applications
  Transmission Principles & Protection
  GSA Schedule
  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

MiCOM P543/4/5/6 Agile The P543, P544, 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

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 P441, P442, P444 Agile The P441, P442 and P444 models, part of the MiCOM P40 Agile family of protection relays, are numerical distance relays that provide flexible, fast and reliable protection of transmission and sub-transmission lines. They include 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.

MiCOM P541, P542 Agile

MiCOM P541, P542 Agile Current differential protection for sub-transmission and MV lines and cables. Part of the MiCOM family of relays. Available in a compact cases, 40TE (P541) or 60TE (P542).

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.

MiCOM P547 Agile

MiCOM P547 Agile The P547, a member MiCOM P40 Agile family of protection relays, provides comprehensive phase comparison line protection including subcycle 5 zone distance protection with distance and DEF signaling schemes.

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.

MiCOM P841 Agile

MiCOM P841 Agile Provides control and back-up protection in transmission and sub-transmission feeder bays, together with single or dual breaker and 1/3 pole autoreclose logic schemes and synchro check.

MiCOM P842 Agile

MiCOM P842 Agile Provides a distributed scheme for delayed auto-reclose (DAR) and auto-isolation of a mesh bus station, using high-speed real time peer-peer communication over Ethernet.

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.