Differential protection relays

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Differential protection relays | Choosing the Right Protection Relay
Protection relays enable the safe distribution of electricity from the grid. Their function is to detect anomalies in the grid that could lead to dangerous situations and, if necessary, interrupt the electrical circuit for as long as necessary. They provide differential, overcurrent, and arc flash protection. This protection is ensured by the relay’s ability to respond rapidly. A relay can consist of several modules, each with its own function.
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current protection relay
current protection relay
MEprotect

Advanced, complex protection for critical electrical generation and distribution assets such as generator and transformers Reliable, complex and powerful protection relay for differential ...

differential protection relay
differential protection relay
SIPROTEC 7SD series

The SIPROTEC 7SD82/86/87 line differential protection have been designed particularly for the selective protection of overhead lines and cables with single-ended and multi-ended infeed ...

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Siemens Energy automation and smart grid
current protection relay
current protection relay
MiCOM P541 - P542 series

High-speed current differential unit protection is provided by the MiCOM Alstom P541 and P542 series. Created for all overhead line and cable applications, the P541 and P542 can easily interface with ...

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Alstom Grid
earth-leakage protection relay
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
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, ...

current protection relay
current protection relay
RGU-10A

The RGU-10A is a type-A ultraimmunized earth leakage protection and monitoring relay that is compatible with the earth leakage transformers in the WGC range. The device measures, calculates and displays ...

earth-leakage protection relay
earth-leakage 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 ...

earth-leakage protection relay
earth-leakage 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 ...

earth-leakage protection relay
earth-leakage protection relay
X52DSX

... 0,2÷5s • One or two operating trip relays. • Output relays test. • Manual (local or remote) or programmable automatic reset. • Continuous control of wiring connection between the relay ...

earth-leakage protection relay
earth-leakage protection relay
DER4B/2D

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

... thresholds - 3 Din modules Dossena presents the DER4B range, the new generation of type B differential toroid relays. DER4B is recommended for electrical protection in the tertiary ...

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DOSSENA
current protection relay
current protection relay
DER4B/2I

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

... thresholds - Recessed 96x96mm Dossena presents the DER3B range, the new generation of type B differential toroid relays. DER3B is recommended for electrical protection in the tertiary ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4/0D

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

The residual current relays of the DER4 Dossena range can be used on LV networks in alternating current of the TT and TN type. They make it possible to achieve adequate selectivity and residual current protection ...

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DOSSENA
power protection relay
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
earth-leakage protection relay
ELR-2

Trigger voltage: 24, 48, 110, 240, 415 V

... indicator (TRIP). Fail safe. Earth leakage relay with 2 operation thresholds, flush mount. External CT. Fail safe. Introduction Range ELR Product name ELR-2 Product type Residual current protection ...

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Contrel elettronica
earth-leakage protection relay
earth-leakage protection relay
ELR-3A

Trigger voltage: 24 V - 230 V

... delay time. Residual current protection relay with external CT. 2 operation threshold. Adjustable tripping and delay time. Introduction Range ELR Product name ELR-3A Product type Residual current ...

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Contrel elettronica
current protection relay
current protection relay
DELTA

... the permanent control of the connection circuit between the differential relay and the toroid. When any anomaly is detected in the connection between the toroid and the relay, the protection ...

phase protection relay
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 ...

voltage protection relay
voltage protection relay
MS2V75

... place. For current operated differential protection relays (e.g. Reyrolle DAD), a series stabilizing resistor is employed to achieve the required voltage stability setting. For voltage ...

voltage protection relay
voltage protection relay
MS2V76 series

The MS2V76 series relay is a single phase protection class AC voltage relay. It may be configured for under or over voltage operation & includes a filter for rejection of third harmonics ...

current protection relay
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 ...

current protection relay
current protection relay
RMC 131D

Trigger voltage: 100 V - 400 V

The Differential Current Relay, RMC-131D has a measurement of 3-phase currents and it has non-stabilized measurement. The LED indication of fault condition and the LED indication is also for activated ...

IEC protection relay
IEC protection relay
RED615

... systems with integration of protection, control, monitoring and supervision in one relay. Scope • Feeder protection including communicating two-end line differential • ...

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ABB Oy Distribution Automation
level protection relay
level protection relay
FPC 400

Tripping current: 5,000, 1 mA

FPC 400 is a family of current or 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 ...

DIN rail protection relay
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
feeder protection relay
feeder protection relay
PAS900 series

... inlet wire auto-input protection, capacitor proteciton, distribution transformer proteciton, motor differential protection, motor comprehensive protection and voltage ...

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Hangzhou Huning Elevator Parts Co., Ltd.
over-current protection relay
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
under-voltage protection relay
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
distance protection relay
distance protection relay
PCS-931

The PCS-931 relay provides full-scheme current differential and distance protection solutions for transmission lines with high- speed sub-cycle distance element. As well, the pilot scheme ...

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NR Electric
over-voltage protection relay
over-voltage protection relay
XMR-D

... generator, transformer and capacitor bank; it is the multifunction and comprehensive Motor and Generator protection relay, including Differential element. Thanks to Hardware and Software ...

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THYTRONIC
earth-leakage protection relay
earth-leakage protection relay
RD-1

Tripping current: 30 mA - 10,000 mA
Trigger voltage: 24 V - 230 V

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 ...

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Orion Italia
phase protection relay
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
voltage protection relay
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
over-current protection relay
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
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 ...

earth-leakage protection relay
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
earth-leakage protection relay
earth-leakage protection relay
X35DB34DCR102

Tripping current: 30 mA - 5,000 mA
Trigger voltage: 230 V

... earth leakage relays, type B earth leakage relays are able to detect residual currents with both DC and AC components. This relay is used in conjunction with a trip protection ...

earth-leakage protection relay
earth-leakage protection relay
X35DB34DCX112

Tripping current: 30 mA - 5,000 mA
Trigger voltage: 230 V

... earth leakage relays, type B earth leakage relays are able to detect residual currents with both DC and AC components. This relay is used in conjunction with a trip protection ...

earth-leakage protection relay
earth-leakage protection relay
X35DL3030R102

Tripping current: 30 mA - 30,000 mA
Trigger voltage: 230 V

... use of a type B earth leakage relay. Type A earth leakage relay are mandatory for TT neutral systems. This relay is used in conjunction with a trip protection device ...

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