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    Products Product Details
    Product name: HWV
    Listing Date:2017-09-29

    Type HWV externally-­mounted vacuum OLTC is a new vacuum tap changer developed by Huaming. It is composed of diverter switch, tap selector, oil tank and motor drive unit. The diverter switch and tap selector of HWV is consolidated in one oil chamber. iT is suitable for power and industrial transformers of Star or Delta connection. Its highest equipment voltage is 40.5 and 72.5kV; its three phases current is less than 1200A and rated frequency is 50 or 60 Hz.


    Item

    Specification

    HWVIII

    HWVI

    1

    Max. rated through-current (A)

    400

    800

    1200

    400

    800

    1200

    2

    Rated frequency (Hz)

    50 or 60

    3

    Connection

    3 phases Y or D connection

    1 phase for any selectable winding connection

    4

    Max. rated step voltage (V)

    3300

    5

    Rated step capacity (kVA)

    1200

    2200

    3200

    1200

    2200

    3200

    6

    Short-circuit

    current test (kA)

    Thermal (3s)

    8

    8

    12

    8

    8

    12

    Dynamic (Peak)

    20

    20

    30

    20

    20

    30

    7

    Max. Operating Positions

    Without change-over selector

    18

    With change-over selector

    35

    8

    Insulation

    to ground

    (kV)

    Highest voltage for

    equipment Um

    17.5

    40.5

    72.5

    Rated separate source AC

    withstand voltage (kV/50Hz,1min)

    50

    85

    140

    Rated lightning impulse

    withstand voltage (kV,1.2/50μs)

    150

    200

    350

    9

    Internal Insulation Level

    4 grades of B, C, D and DE according to insulation level

    10

    Mechanical life

    Not less than 1,500,000 operations

    11

    Contact life

    Not less than 600,000 operations

    12

    Oil compartment of diverter switch

    Service pressure

    0.03Mpa

    Leakage test

    No leakage under 0.08Mpa for 24 hours

    Over pressure protection

    Bursting cap busts at 300 ± 20%kPa

    Protection relay

    Oil flow speed set at 1.0m/s ±10%

    13

    Motor drive unit

    SHM-D or CMA7

    14

    Oil filter plant

    ZXJY-1 / ZXJY-2 / ZXJY-3 according to requirement (Necessary when max. rated through current is 1000A and above or OLTC used for industrial applications)

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    欢乐棋牌下载可提现 Copyright © 2005 - 2013 Shanghai Huaming Power Equipment
    犀牛雲提供企業雲服務
    Address: No.977, Tongpu Road, Shanghai, 200333, China 
    Tel: 86 21 5270 8966
    E-mail: export@huaming.com
    郵編:330520
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