A protective relay is an electrical component that is designed to trip a circuit breaker when a fault is encountered or identified.
The protective relay compares the actual real-time values against preset threshold values and sends electrical control signals to trip circuit breakers to clear an abnormal condition on the equipment it is protecting, alarm indications are sent to system control and sometimes other protection operations are initiated.
GE's generator protection devices provide innovative solutions for the protection, control and monitoring of generator assets. Generator protection is critical to maintaining maximum uptime in the generating facility and providing vital protection of the generating unit. From the protection and control of utility generators to ensuring safe interconnection of renewable energy sources, to synchronization and load shedding solutions using advanced automation, GE maximizes asset reliability and operational life.
Large Size Generators (>40MVA)
Small to Medium Size Generators (< 40MVA)
Ground Protection
Special Applications
GE's transformer protection devices provide innovative solutions for the protection, control and monitoring of transformer assets. Transformers have become an essential component for high voltage power transmission, ensuring long distance transmission of power is economically practical. GE's transformer protection solutions enhance transformer reliability through special techniques and methods to increase the life of transformers.
Extend transformer life, optimize capital expenditure and improve reliability of service by implementing a preventative asset maintenance and management tool using GE's Multilin T60, T35, 845, 745 and 345 as well as MiCOM P64x.
Power Generation & Transmission
Distribution & Industry (>5MVA)
Distribution & Industry (<5MVA)
Special Applications
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.
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.
Line Differential with Distance - Transmission
Line Differential with Distance - Distribution
Distance Protection
Railway Catenary
Special Applications
Accessories
GE provides enhanced reliability through advanced protection for a wide range of bus protection applications. Our highly skilled technology teams understand bus bar principles and protection techniques, and use them to design, manufacture and support bus protection solutions that can be applied to a vast array of applications.
High magnitude fault currents require high speed operation of the bus bar protection to limit damage. However, this high speed clearing must be balanced against the need for security. Tripping incorrectly for an external fault may cause large outages and jeopardize power system stability.
Distributed Bus Protection
Centralized Bus Protection
High Impedance Bus Differential
Accessories
GE’s distribution feeder protection systems provide advanced protection with flexibility, programmability and communications for maximum system reliability. Our highly skilled engineers and technicians understand distribution feeder principles and the sources of faults on overhead and underground distribution feeders. They apply their knowledge to the design and manufacture of some of the most advanced protection relays and systems in the world.
Major faults occurring in the distribution system such as arc flash, incipient cable splice fault, high impedance fault and others, must be sensed quickly and isolated immediately to prevent hazards to the general public and personnel.
Transmission & sub-transmission
Distribution & Industry (with mimic diagram)
Distribution & Industry (compact case)
LV over current
Special Applications
Accessories
GE’s motor protection systems use advanced thermal modeling to provide optimized protection and ensure maximum process uptime. Our highly skilled engineers and technicians understand motor protection and the various scenarios that can cause damage to motors. They apply their knowledge to the design and manufacture of some of the most advanced protection relays and systems in the world.
Large Induction Motors
Medium to Large Induction Motors
Small to Medium Induction Motors
LV Motors
Special Applications
Accessories
Overcurrent
Voltage & frequency
Differential
Timing
Generator
Transmission line Legacy Single Function Protection Products
Test blocks
Test plugs
Test Equipment
Terminal Blocks
Indicator Lights
GE's generator protection devices provide innovative solutions for the protection, control and monitoring of generator assets. Generator protection is critical to maintaining maximum uptime in the generating facility and providing vital protection of the generating unit. From the protection and control of utility generators to ensuring safe interconnection of renewable energy sources, to synchronization and load shedding solutions using advanced automation, GE maximizes asset reliability and operational life.
Large Size Generators (>40MVA)
Small to Medium Size Generators (< 40MVA)
Ground Protection
Special Applications
GE's transformer protection devices provide innovative solutions for the protection, control and monitoring of transformer assets. Transformers have become an essential component for high voltage power transmission, ensuring long distance transmission of power is economically practical. GE's transformer protection solutions enhance transformer reliability through special techniques and methods to increase the life of transformers.
Extend transformer life, optimize capital expenditure and improve reliability of service by implementing a preventative asset maintenance and management tool using GE's Multilin T60, T35, 845, 745 and 345 as well as MiCOM P64x.
Power Generation & Transmission
Distribution & Industry (>5MVA)
Distribution & Industry (<5MVA)
Special Applications
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.
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.
Line Differential with Distance - Transmission
Line Differential with Distance - Distribution
Distance Protection
Railway Catenary
Special Applications
Accessories
GE provides enhanced reliability through advanced protection for a wide range of bus protection applications. Our highly skilled technology teams understand bus bar principles and protection techniques, and use them to design, manufacture and support bus protection solutions that can be applied to a vast array of applications.
High magnitude fault currents require high speed operation of the bus bar protection to limit damage. However, this high speed clearing must be balanced against the need for security. Tripping incorrectly for an external fault may cause large outages and jeopardize power system stability.
Distributed Bus Protection
Centralized Bus Protection
High Impedance Bus Differential
Accessories
GE’s distribution feeder protection systems provide advanced protection with flexibility, programmability and communications for maximum system reliability. Our highly skilled engineers and technicians understand distribution feeder principles and the sources of faults on overhead and underground distribution feeders. They apply their knowledge to the design and manufacture of some of the most advanced protection relays and systems in the world.
Major faults occurring in the distribution system such as arc flash, incipient cable splice fault, high impedance fault and others, must be sensed quickly and isolated immediately to prevent hazards to the general public and personnel.
Transmission & sub-transmission
Distribution & Industry (with mimic diagram)
Distribution & Industry (compact case)
LV over current
Special Applications
Accessories
GE’s motor protection systems use advanced thermal modeling to provide optimized protection and ensure maximum process uptime. Our highly skilled engineers and technicians understand motor protection and the various scenarios that can cause damage to motors. They apply their knowledge to the design and manufacture of some of the most advanced protection relays and systems in the world.
Large Induction Motors
Medium to Large Induction Motors
Small to Medium Induction Motors
LV Motors
Special Applications
Accessories
Overcurrent
Voltage & frequency
Differential
Timing
Generator
Transmission line Legacy Single Function Protection Products
Test blocks
Test plugs
Test Equipment
Terminal Blocks
Indicator Lights
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