Modernizing Legacy MV Switchgear

ge magneblast replacement switchgear

  • More Than Replacement Switchgear

    Replacing 1960s-era medium voltage switchgear is not just an upgrade – it’s a shift to modern protection, control, and operational philosophy.

  • Adapt to Existing Physical Constraints

    New equipment must fit the original footprint  (NEMA 1), respecting NEC 110.26 for clearanes and access.

  • New Safety Standards Demand Remote Operation

    Arc flash risks (per NFPA 70E, IEEE 1584) require all switching and fault responses to occur away from the energized zone.

  • Functional Segregation Is Essential

    The system must seperate:

    • Power Operations (SWGR)
    • Logic/control (control panels)
    • Protection/fault analysis (relay panels)

  • Digital Relays and SCADA Integration Required

    Implement IEC 61850 – compatible relays for remote diagnostics, fast fault clearing, and event logging.

  • No Manual Interaction with Live Equipment

    All normal operations – close, open, reset – must be executed from a remote HMI or control panel.

ge magneblast replacement switchgear
ge magneblast replacement switchgear

  • Site Integration is the Challenge

    The main constraint is installing this architecture within old civil structures without reconstruction.

  • Final Objective: Full Remote-Controlled System

    The only viable solution is a fully remote-operated switchgear system, meeting today’s safety, reliability, and automation standards.

  • Replacement Model Options

    • ABB CBD05 (5HK250)
    • Siemens MA 75-250
    • Westinghouse 50DH – 50, 250, 350 series and DHP
    • GE MagneBlast – M26, M26H, M36, M36H
    • ITE HV Series

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