Differential protection relays

23 companies | 92 products
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differential protection relay / earth-leakage / AC/DC / digital
differential protection relay

The X...DB3 series earth leakage relays type B are designed to measure the DC, AC and high frequency leakage current. Thanks to their distinctive feature (the displaying of the leakage current) it is possible to continuously ...

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FRER
current protection relay / earth-leakage / DC / AC
current protection relay
X48DB3

The X...DB3 series earth leakage relays Type B are designed to measure the DC, AC and high frequency leakage current. Thanks to their distinctive feature (the displaying of the leakage current) it is possible to continuously ...

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FRER
current protection relay / earth-leakage / DC / AC
current protection relay
X72DB3

The X...DB3 series earth leakage relays Type B are designed to measure the DC, AC and high frequency leakage current. Thanks to their distinctive feature (the displaying of the leakage current) it is possible to continuously ...

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FRER
earth-leakage protection relay / differential / adjustable / electronic
earth-leakage protection relay
RG1M series

WG series electronic differential protection relay for connection to external WG / WGS / WGC series toroidal transformers These are highly reliable electronic relays ...

earth-leakage protection relay / frequency / digital / programmable
earth-leakage protection relay
WRU10 series

Trigger voltage: 110, 230 V

... : differential protection settings. protection trigger current. protection status messages, etc. Units with three programmable output contact relays, ...

power protection relay / 1 NO/NC / differential
power protection relay
ELR-1D

Trigger voltage: 24, 48, 110, 230 V

• Earth leakage relay type A • External toroidal • Green power LED indicator (ON) • Red relay tripped LED indicator (TRIP) • Front TEST and RESET buttons • Modular DIN housing, 1 module, with transparent ...

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Contrel elettronica
earth-leakage protection relay / current / programmable / digital
earth-leakage protection relay
ELR-3A

Trigger voltage: 240 V

Earth Differential Relay Type A • earth leakage current measurement by external toroidal gearbox • measurement in true effective value (trms) • programming and display via a backlit LCD display - ...

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Contrel elettronica
earth-leakage protection relay / current / AC / AC/DC
earth-leakage protection relay
ELR-3B

Trigger voltage: 250, 230 V

... Monitor device Type B. Associated to external core balance transformer the CTB-1/xxx family. It has 2 programmables outputs relays. Main trip and prealarm signal. It has one free voltage input for external TRIP/RESET. ...

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Contrel elettronica
earth-leakage protection relay / AC/DC / digital / differential
earth-leakage protection relay
DER3BDUAL/2I

Tripping current: 0.05 A - 7 A

DER3B DUAL – UNIVERSAL relay type B. Dossena presents the new DER3B DUAL series, the new generation of earth differential relays. The earth differential relays ...

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DOSSENA
earth-leakage protection relay / AC/DC / DIN rail / digital
earth-leakage protection relay
DER3BDUAL/6D

Tripping current: 0.05 A - 7 A

DER3B DUAL – UNIVERSAL relay type B. Dossena presents the new DER3B DUAL series, the new generation of earth differential relays. The earth differential relays ...

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DOSSENA
current protection relay / earth-leakage / DIN rail / IEC
current protection relay
DER3/0D

Tripping current: 0.03 mA - 30,000 mA

The DER3/0D or the earth differential relay is mainly used on LV networks in an alternative current of type TT and TN. It has a broad adjustment of threshold current dispersion and threshold for delay ...

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DOSSENA
earth-leakage protection relay / over-current / three-phase / differential
earth-leakage protection relay
AQ-T216

AQ-T216 is a transformer protection IED with sophisticated and easy to use differential protection function. The AQ-T216 transformer protection IED provides for both ...

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Arcteq Relays Ltd
trip circuit protection relay / DIN rail / differential / for generators
trip circuit protection relay
HR series

Tripping current: 8 A
Trigger voltage: 230 V

earth-leakage protection relay / digital / programmable / differential
earth-leakage protection relay
RD-1

The Earth Leakage Relay RD is a microprocessor-based electronic protection device designed to recognize low-level leakage or unbalanced currents, due to insulation loss on conductors or equipment to be ...

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
phase protection relay / configurable / digital / panel-mount
phase protection relay
DPT-B

This digital relay renders optimal differential three phase protection functions that are needed for power transformers. This relay comes in varying DTP models that are ...

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GE Grid Solutions
phase protection relay / panel-mount / programmable / digital
phase protection relay
RED615 IEC

... line differential protection and control IED. One RED615s communicates between substations over a fibre-optic link while two RED615s can form a categorically selective unit protection ...

differential protection relay / power / AC/DC / digital
differential protection relay
865 series

... 857 Motor and Feeder Protection safequards devices utilized in the distribution matrix of various utilities, industry, power plants in addition to offshore application. This astounding device is remarkably used by means ...

under-voltage protection relay / differential / time delay / with fault indication
under-voltage protection relay
PVK series

Trigger voltage: 100 V - 480 V

... set point level Umin, the protector will trip and the red LED will illuminate to indicate the fault condition. During the time delay period the red LED will flash for the set time (t) before the relay ...

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Crompton Instruments
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-current protection relay / synchronization / programmable / configurable
over-current protection relay
SEL-311L

... -311L Line Current Differential Relay with integral four zone distance backup for easy-to-apply, high-speed line protection. Apply subcycle current differential protection ...

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Schweitzer Engineering Laboratories
DIN rail protection relay / differential
DIN rail protection relay
Delta D2-L

... Instantaneous (t = 0) at lAn 30mA Selectable set point 30mA...30A (19 ranges) Field-selectable negative or positive security (fail safe) Automatic permanent test Manual or automatic reset (3 restart attempts)

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IME Spa
earth-leakage protection relay / differential / time delay / adjustable
earth-leakage protection relay
RESYS M40

Tripping current: 0.03 A - 30 A

The Resys M40 is a type A differential relay manufactured by Socomec. Integrated with a remote trip breaking device, it provides an indirect contact protection and a leakage current limitation. ...

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SOCOMEC
phase protection relay / AC / high-sensitivity / panel-mount
phase protection relay
MS2V73

High speed differential protection for various items of power system plant including generators, busbars, motors & the individual windings of power transformers and for restricted earth fault applications. The ...

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Mors Smitt BV
current protection relay / programmable / differential / IEC
current protection relay
B-PRO Bus Protection Relays

... 4000 Bus Protection Relay Simple bus applications with up to 6 feeders and 2 differential zones with breaker failure, or 4 feeders and 1 transformer, including separate full transformer ...

over-current protection relay / earth-leakage / programmable / panel-mount
over-current protection relay
SKC series

The differential current relays type SKC is intended for the protection of generators, large motors, two winding power transformers and short lines. The following functions are provided: thermal ...

phase protection relay / current / AC / differential
phase protection relay
KCC101x series

Trigger voltage: 100 V - 480 V

KCC101x Series KCC101x - SINGLE PHASE OVERCURRENT GUARD Single Phase Overcurrent Protection with Definite Time Trip Delay Two individually setable overcurrent relays For ...

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Meagacon AS
over-current protection relay / earth-leakage / voltage / frequency
over-current protection relay
VAMP 52

... and Motor Protection Relay Key Features: Multifunctional yet user-friendly Extensive thermal protection functions optimal for low and medium-sized asynchronous motors Directional earth ...

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Vamp
current protection relay / three-phase / DIN rail / programmable
current protection relay
MDR-2

The MDR-2 is a differential current relay intended for protection of a generator against internal short circuits (leaking currents). It is based on a 16-bit digital signal processor providing ...

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DEIF
voltage protection relay / DC / digital / differential
voltage protection relay
ETCPU 200

-DC Switchgear Protection Relay -Protection, Control, Monitoring, Metering, Data Logging, PLC, Communication -di/dt, delta I, delta VI, 76D, 32, 80 45 Differential ...

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ENTEC ELECTRIC & ELECTRONIC CO.,LTD