Digital protection relays

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Digital protection relays | Choosing the Right Protection Relay
Protection relays can be divided into two main categories: digital relays and electromechanical relays. Digital protection relays Digital protection relays, also known simply as "digital relays", are made up of an electronic system with microprocessors. These microprocessors make it possible to analyze various grid parameters, such as voltage, intensity, or current to detect faults in an industrial control system. Thanks to microprocessors, these relays...
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earth-leakage protection relay
earth-leakage protection relay
EL731 series

Trigger voltage: 120, 240, 24, 48 V

The EL731 series relay operates on ac resistance-grounded systems and dc grounded systems. This unit is a microprocessor-based ac, dc, sensitive, earth-leakage relay that offers complete coverage for ...

earth-leakage protection relay
earth-leakage protection relay
CBS4 series

Tripping current: 0.03 A - 30 A

Unit equivalent to 4 earth leakage protection networks. 4 independent programmable relays available Four inputs to connect the external toroidal transformers of the WG Superimmunized Type A relay ...

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CIRCUTOR
earth-leakage protection relay
earth-leakage protection relay
RGU-10 series

Tripping current: 0.03 A - 30 A
Trigger voltage: 230 V

Electronic earth leakage protection relay, used to connect to the earth leakage transformers WG / WGC Series Superimmunized Type A relay with high frequency current ...

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CIRCUTOR
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 and ...

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CIRCUTOR
safety protection relay
safety protection relay
SR-0

Tripping current: 2 A
Trigger voltage: 19 V - 29 V

The safety relay / safety switching devices from di-soric make simple integration of individual safety sensors into occupational safety solutions possible. ...

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di-soric
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 ...

feeder protection relay
feeder protection relay
SIR-A

Tripping current: 1 A - 5 A
Trigger voltage: 24 V - 230 V

SIR-A Overhead Control / RTU & Feeder Protection The Fanox SIR-A is the Relay that offers the complete solution for Recloser Control and Feeder Protection with current, voltage, ...

phase sequence protection relay
phase sequence protection relay
SIU-C

Trigger voltage: 24 V - 230 V

... SIU-C represents the best and most precise protection solution for transformers and electrical machines in high, medium, and low-voltage distribution systems. The SIU-C is a voltage and frequency protection ...

phase unbalance protection relay
phase unbalance protection relay
SIL-C

Trigger voltage: 24 V - 230 V

SIL-C FEEDER & GENERATOR PROTECTION RELAY High Accuracy and Reliability in a compact device The SIL-C Relay protects Feeders and Equipment and includes comprehensive current, voltage, ...

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

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

... 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 devices that generate ...

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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

... 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 devices that ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4/1D

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 differential protection ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
ELR-3A

Trigger voltage: 24 V - 230 V

... Earth-leakage protection class Typo A Test function Local Remote test Output relays 2 changeovers (TRIP, ALARM) 5 A (240 VAC) Configurable normally de-energised or energised Display indications ...

earth-leakage protection relay
earth-leakage protection relay
ELR-8V

Tripping current: 0.03 A - 30 A

Earth leakage relay with 2 operation thresholds, flush mount. External CT. Fault current measurement. Digital display. Fail safe. Flag indicator. • Earth leakage relay type A • ...

earth-leakage protection relay
earth-leakage protection relay
ELR-3B

Trigger voltage: 230 V

... 10 s Protection AC type protection Type A protection Type B protection Test function Local Remote Output relays 2 (TRIP, Prealarm) 10 A (250 ...

over-voltage protection relay
over-voltage protection relay
900VPR-BL-U-CE

Tripping current: 3, 5 A
Trigger voltage: 50 V - 500 V

• 3 phase RMS voltage protection relay • Monitors: Over / Under Voltage, Over / Under Frequency, Phase asymmetry, Phase failure, Phase sequence & Neutral loss • Accuracy: ± 1% of Voltage, ± 0.3Hz • ...

over-voltage protection relay
over-voltage protection relay
VPRD2M

Tripping current: 5 A
Trigger voltage: 127 V - 288 V

• 3 phase and single phase RMS voltage protection relay • Monitors: Over / Under Voltage, Phase asymmetry, Phase failure, Phase sequence. • Accuracy : ± 1% of Voltage. • Supply Voltage: 127 to 288V ...

over-current protection relay
over-current protection relay
900CPR-1-BL-U

Tripping current: 3, 5 A
Trigger voltage: 85 V - 270 V

... Electrical Connection : 1Ø-2W Display : 3 Digits Liquid Crystal Display With Backlight CT Setting : CT Primary: 1A / 5A – 999A, CT Secondary: 1A / 5A (selectable) Time Ranges : Power ...

level protection relay
level protection relay
REB611

... Scope • Busbar and ideal multipurpose backup protection relay • Product benefits • Preconfigured functions for busbar protection application • The relays are ...

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ABB Oy Distribution Automation
over-current protection relay
over-current protection relay
SIPROTEC 7SJ series

... 7SJ85 overcurrent protection has been designed specifically for protection of feeders and lines in medium-voltage and high-voltage systems. The SIPROTEC 7SJ86 overcurrent ...

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SIEMENS Energy automation and smart grid
current protection relay
current protection relay
EMR series

Eaton’s Motor Relays (EMR3MP0, EMR3000, EMR4000 and EMR5000) provide unparalleled motor protection. These relays are most commonly applied to medium-voltage or larger motors. Users appreciate ...

over-current protection relay
over-current protection relay
P50 Agile P154

... substations and as a backup relay in HV systems. P154 can also be applied for direct refurbishment of substations using older generations of non-communicating overcurrent relays. The ...

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Alstom Grid
motor protection relay
motor protection relay
RX series

Tripping current: 1 A - 2,000 A
Trigger voltage: 0 V - 600 V

RX Motor Protection Relay Take your motor protection to a new level. The RX Series provides more than just solid state overload or power protection relays. ...

temperature protection relay
temperature protection relay
FPC 200

Tripping current: 0.3 A - 30 A

FPC 200 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 ...

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Iskra d.d.
voltage protection relay
voltage protection relay
RM3C

Direct and pulsanting voltage or current relay Wall mounting Bidirectional direct or pusating voltage or current relay 2 Min. and / or Max. programmable alarms Input voltage 50mV... 200mV Input ...

feeder protection relay
feeder protection relay
PAS900 series

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

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Hangzhou Huning Elevator Parts Co., Ltd.
power protection relay
power protection relay
DMP300

Tripping current: 1, 2, 5 A
Trigger voltage: 110, 220 V

... strong an-jamming design that suitable for severe environment. The measurement, protection AI isolation sampling channels are fully independent. The specialized analog and digital filtering design and ...

over-current protection relay
over-current protection relay
SEL-311L

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

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Schweitzer Engineering Laboratories
over-current protection relay
over-current protection relay
CGI 14N/C

CGI 14N/C is a numerical over current and earth fault relay, entirely digitized and integrated with microprocessor technology. This allows for analog to digital conversion of the valves ...

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CG Power Systems
overload relay
overload relay
LC 200

Tripping current: 0.5 A
Trigger voltage: 24 V

The LC 200 accessories electronic overload guard features a power supply that ranges from 12 to 24V AC or DC. It consists of a red LED six-digit display placed on the top of the device. It mounts on a ...

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Pavone sistemi
voltage protection relay
voltage protection relay
ARKENS PR

Multipurpose digital protection relay - IEC 61850 - Station Bus This cost-effective protective device is used to perform advanced protection, control ...

voltage protection relay
voltage protection relay
PCS-915ID

... Busbar current differential protection (87B) Phase current differential protection Percentage restraint DPFC differential protection DPFC differential protection Voltage ...

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NR Electric
over-current protection relay
over-current protection relay

The DKR-24 Series, manufactured by Entes, is an overcurrent protection relay designed to avoid damage from overloading the motor. This is equipped with electronic coil ...

over-current protection relay
over-current protection relay
VIPAM3500

Tripping current: 5 A
Trigger voltage: 110 V

VIPAM3500 (Integrated Electronic Device) is a digital protection relay that enables a high-precision measurement and protection relay ...

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VitzroEM Co., Ltd.
voltage protection relay
voltage protection relay
L-PRO 4000

... is a digital, microprocessor-based line distance protection system that provides comprehensive distance based line protection for medium to extra-high-voltage transmission lines. Apply ...

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