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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IEC protection relay
IEC protection relay
RED615

... systems with integration of protection, control, monitoring and supervision in one relay. RED615 is a member of ABB’s Relion® product family and part of its 615 protection and control series of relays. Scope •Feeder ...

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ABB Oy Distribution Automation
generator protection relay
generator protection relay
Multilin 889

... Additional overall generator-transformer differential (87O) providing additional back-up protection • - Advanced differential protection for both generator and in-zone transformer • ...

differential protection relay
differential protection relay
SIPROTEC 7SD82

... 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 in medium-voltage ...

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SIEMENS Energy automation and smart grid
voltage protection relay
voltage 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 ...

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
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 and the CT: ...

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 with the option ...

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, one switched ...

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 the true RMS value ...

power protection relay
power protection relay
ELR-1D series

Trigger voltage: 230, 24, 48, 110 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 cover, suitable ...

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Contrel elettronica
earth-leakage protection relay
earth-leakage protection relay
ELR-2 series

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 relay Current ...

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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 protection ...

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Contrel elettronica
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 sector, where ...

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DOSSENA
earth-leakage protection relay
earth-leakage 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 sector, where ...

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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 thanks ...

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DOSSENA
under-voltage protection relay
under-voltage 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 in demanding ...

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 fault protection ...

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Vamp
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 comprehensive protection, ...

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Hangzhou Huning Elevator Parts Co., Ltd.
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 deenergises. The ...

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Crompton Instruments
flush-mount protection relay
flush-mount protection relay
Delta 48-S

... 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) ...

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 MS2V73 ...

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Mors Smitt BV
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 modularity ...

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THYTRONIC
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 low and high side ...

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Arcteq Relays Ltd
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 protected. The ...

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Orion Italia
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 voltage, 26F, 64D, ...

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ENTEC ELECTRIC & ELECTRONIC CO.,LTD
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 of distance ...

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NR Electric
current protection relay
current protection relay
B-PRO

... 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 differential ...

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
current protection relay
current protection relay
MDR-2 series

Tripping current: 5 A
Trigger voltage: 250 V

... combined differential protection and short-circuit protection relay for generator protection against internal short circuits (leaking currents). The MDR-2 is a state-of-the-art ...

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DEIF
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 ...

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 (automatic power ...

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 device ...

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 device ...

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