Grid and system protection relays

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Grid and system 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 can...
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voltage protection relay
voltage protection relay
PCS-902S

... phase-to-ground distance protection (21L)

  • Pilot distance and pilot directional earth-fault protection (85)
  • Power swing blocking/releasing logic (PSBR)
  • Multi-stage phase and earth-fault overcurrent
  • ...

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    NR Electric
    trip circuit protection relay
    trip circuit protection relay
    INGEPAC EF BF

    Tripping current: 1 A - 5 A

    ... commercial power systems

    Product details

    • Brand: Ingeteam
    • Model: INGEPAC EF BF
    • Function: Breaker-failure protection relay
    • Integration: Compatible
    ...

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    Ingeteam GmbH
    voltage protection relay
    voltage protection relay
    EMI-20

    Trigger voltage: 24 V - 230 V

    EMI-20/5 is the Contrel gateway for connecting Modbus devices to the ConSight cloud platform. It collects and centralises energy data from the field, enabling remote monitoring and supervision of installations with up to 5 Modbus devices.

    over-voltage protection relay
    over-voltage protection relay
    SIU-C

    Trigger voltage: 24 V - 230 V

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

    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 alternating, ...

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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 generate alternating, ...

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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
    grid and system protection relay
    grid and system protection relay
    NA003-M64

    Trigger voltage: 24, 110 V

    ... Grid protection monitoring relay RE series; Frequency and voltage monitoring; Grid and system protection; Functionally Safe; Measuring voltage 3 x 400/230V ...

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    TELE Haase Steuergeraete GmbH
    arc flash protection relay
    arc flash protection relay
    AFR-4

    Trigger voltage: 85 V - 265 V

    ... minimize or completely eliminate arc flash damage, improving system safety and reliability. It can be used in various arc protection applications in low or medium voltage power distribution system. AFR-4 ...

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    Chongqing Blue Jay Technology Co. Ltd
    earth-leakage protection relay
    earth-leakage protection relay
    X96DSA

    Tripping current: 0.03 A - 30 A

    ... sealable front panel. Dual TRIP relay and alarm relay. Colored LED bar for IΔn % indication. Connection by means of external closed-core or split-core toroids of the TDC-TDA series. - Maximum safety and ...

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