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    On-load tap-changer for network applications.

    Your benefits at
    a glance

    • Maintenance-free up to 300,000 tap-change operations with no time component
    • Change of vacuum interrupters only after 600,000 tap-change operations
    • Change of the diverter switch insert only after 1.2 million tap-change operations
    • Intended for selected alternative insulation fluids
    • Intended for operation in earthquake-prone areas
    • Also available in EX protection version with TAPMOTION ® ED motor-drive unit
    • Field experience: Over 12,000 pieces in use worldwide


    Technical Data

    Max. rated through-current single phase 400 A
    Max. rated through-current three phase 600 A
    Max. rated step voltage 2,000 V
    Max. rated switching capacity
    single-phase / three-phase
    700 kVA
    Highest voltage for equipment Um 40 - 145 kV
    Application at neutral point (three-phase) or at any selectable winding position
    Operating positions without change-over selector 12 max.
    Operating positions with change-over selector 23 max.

    Product description

    It’s maintenance-free up to 300,000 operations and suitable for most network applications. Thus your transformer lifecycle costs are reduced significantly.