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RED670 ABB
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RED670 ABB

Original price was: $7,686.00.Current price is: $3,453.00.

What this device actually does (field logic)

This is a line protection relay, not a bay controller and not a busbar device.

Core operating principle:

  • Measures phase currents at both ends of a transmission line
  • Exchanges data via fiber optic or communication channel
  • Performs differential comparison in real time
  • Trips when internal fault condition is confirmed

If communication is healthy, it behaves like a single coordinated protection system across two substations.

If communication is unstable, protection logic becomes blocked or restricted depending on settings.

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Category: SKU: RED670 ABB
  • Email:sales@sxrunsheng.cn
  • Phone:+86 15340667322
  • Whatsapp：+86 15340667322

    • Description

    System role in protection hierarchy

    Typical grid placement:

    • Busbar protection: REB670 / REB500
    • Bay control: REC650 / REC670
    • Line protection: ABB RED670

    Application zones:

    • EHV transmission lines (132 kV / 220 kV / 400 kV class)
    • Long inter-substation feeders
    • Ring and meshed transmission networks
    • Critical intertie lines between grid zones

    This relay is the “first line of defense” for transmission line faults.

    RED670 ABB

     

     Key technical specifications (field-relevant summary)

    Based on ABB Relion 670 platform architecture:

    • Series: ABB Relion 670
    • Device type: Line differential protection relay
    • Protection principle: Phase-segregated current differential protection
    • Communication: Fiber optic / pilot wire channel between substations
    • IEC 61850: MMS + GOOSE supported (system dependent)
    • Protection speed: typically sub-cycle operation (≈1–2 cycles depending configuration)
    • Backup protection: distance protection, overcurrent, earth fault (optional configuration)
    • CT supervision: CT saturation detection and stabilization logic
    • Fault recording: COMTRADE disturbance records
    • Applications: transmission lines, cable feeders, interconnectors
    • Mounting: withdrawable plug-in rack module system
    • Supply: 48–250 V DC or AC/DC variants (hardware dependent)

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