Ethernet protection relays

5 companies | 15 products
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over-current protection relay / thermal / programmable / digital
over-current protection relay
7SR51

... Standard functionality •37/ 37G undercurrent protection •46 Negative sequence overcurrent protection •46BC Broken conductor detection •49 Thermal overload protection •50/ ...

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Siemens Energy automation and smart grid
differential protection relay / power / programmable / configurable
differential protection relay
7SR54

... Functions Standard Functionality can include •24 Overexcitation protection •27 Undervoltage protection – 3 phase •27Vx Undervoltage protection – Vx •37 Undercurrent protection ...

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Siemens Energy automation and smart grid
feeder protection relay / voltage / frequency / digital
feeder protection relay
7SC80

... SIPROTEC 7SC80 feeder protection can be used for protection and automation of medium voltage distribution feeders with grounded or low resistance grounded, isolated, or compensated neutral point. The ...

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Siemens Energy automation and smart grid
thermal protection relay / under-voltage / over-voltage / earth-leakage
thermal protection relay
FPC 400

Tripping current: 1,000, 5 mA

FPC 400 is a family of current and voltage digital protection relays with easy to use interface meant for variety of solutions in industry and power distribution. Its robust design enables it to be placed ...

over-voltage protection relay / over-current / arc flash / under-voltage
over-voltage protection relay
SEL-751

Feeder Protection Relay The SEL-751 Feeder Protection Relay is ideal for directional overcurrent, fault location, arc-flash detection, and high-impedance fault detection ...

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Schweitzer Engineering Laboratories
digital protection relay / voltage / programmable / configurable
digital protection relay
SEL-311C

Transmission Protection System Apply the SEL-311C Relay for protection, reclosing, monitoring, and control of transmission lines. Features include a four-shot recloser, patented capacitance ...

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Schweitzer Engineering Laboratories
over-current protection relay / synchronization / digital / programmable
over-current protection relay
SEL-351

Protection System The SEL-351 Protection System has built-in Ethernet and IEEE C37.118 synchrophasors, and is ideal for directional overcurrent applications. Optional ...

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Schweitzer Engineering Laboratories
over-current protection relay / synchronization / digital / programmable
over-current protection relay
SEL-351A

Protection System The SEL-351A Protection System has built-in Ethernet and IEEE C37.118 synchrophasors, and is the economical solution for overcurrent protection. ...

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Schweitzer Engineering Laboratories
current protection relay / programmable / differential / IEC
current protection relay
B-PRO Bus Protection Relays

The B-PRO relays provide low impedance differential protection for any bus bar configuration with CT saturation security, integrated breaker failure, overcurrent protection ...

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ERLPhase
voltage protection relay / current / frequency / multifunction
voltage protection relay
F-PRO Feeder Protection & Management Relays

... family of numerical multifunction relays provide complete feeder protection with a wide range of protection functions suitable for transmission, distribution and industrial applications. ...

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ERLPhase
transmission line protection relay / voltage / digital / IEC
transmission line protection relay
L-PRO 4000

... microprocessor-based line distance protection system that provides comprehensive distance based line protection for medium to extra-high-voltage transmission lines. Apply the L-PRO for high-speed distance ...

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ERLPhase
voltage protection relay / current / multifunction / Ethernet
voltage protection relay
S-PRO 4000

The S-PRO sub-harmonic protection relay protects generators, wind turbines, and SVC equipment from uncontrollable sub-harmonics which cause Sub-Synchronous Torsional Interaction (SSTI) Sub-Synchronous ...

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ERLPhase
current protection relay / differential / Ethernet
current protection relay
ALP series

Tripping current: 100 mA - 100,000 mA

The ALP series covers differential protection and accounts for current transformer errors by providing a two slope differential setting characteristic. The events of transformer ultrasaturation during inrush and very ...

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Gentec
over-current protection relay / IEC / Ethernet
over-current protection relay
ALP series

Tripping current: 100 mA - 100,000 mA

The ALP series covers overcurrent protection for either instantaneous or timed overcurrent including definite time overcurrent. Offers standard IEC and IEEE inverse time overcurrent ...

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Gentec
over-voltage protection relay / under-voltage / over-frequency / under-frequency
over-voltage protection relay
ALP series

Tripping current: 100 mA - 100,000 mA

The ALP series prevents islanding from occurring by combining a series of overvoltage, undervoltage, overfrequency, underfrequency and rate of change of frequency (ROCOF) functions. Detects island and trips associated breaker ...

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Gentec