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  • Hubei Dayu Hanguang Vacuum Electric Co.,Ltd.
    CN EN

    Embedded poles

    Model:EEP-40.5/2500-31.5

    Category:Embedded poles


    Product details

    HEP-40.52 500-31.5-1.jpg  HEP-40.52 500-31.5-2.jpg

    HEP-40.52 500-31.5-3.jpg

    Specifications of Embedded Pole

    Main Technical SpecificationUnitSpecification
    2500200016001250
    Rated voltagekV40.5
    Rated currentA2500200016001250
    Rated frequencyHZ50/60
    Short time power frequency withstand voltage(1min)kV95
    Lightning impulse withstand voltagekV185
    Rated short circuit breaking currentkA31.5
    Rated peak withstand currentkA80
    Rated short circuit making currentkA80
    Rated short time withstand currentkA31.5
    Rated duration of short circuitS4
    Rated breaking current of single capacitor bankA400
    Rated breaking current of back to back capacitor bankA400
    Rated operating sequenceO-0.3s-CO180s-CO
    Breaking operations of rated short circuit breaking currentTimes20
    Rated mechanical enduranceTimes10000
    Closing force due to bellow and atmosphereN120±50
    Force required to hold contacts open at full strokeN240±50
    Circuit resistance at lower limit of rated contact force≤30
    Contacts limit erosionmm3
    Gas pressure inside vacuum interrupterPa≤1x10?3
    Localize dischargePc≤5

    Mechanical Data Required for the Matched Vacuum Switchgear

    Main Technical SpecificationUnitSpecification
    2500200016001250
    Clearance between open contactsmm18±1
    Average opening speedm/s1.55±0.15
    Average closing speedm/s0.7±0.2
    Rated of contact forceN3200±200
    Contact bouncing duration at closing operationms≤3
    Out of simultaneity of contact closing and openingms≤2
    Maximum rebound during openingmm≤3

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