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.
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 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.
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.
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
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.
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.
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.
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 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.
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.
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
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 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.
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