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    Products Product Details
    Product name: CZ
    Listing Date:2017-06-25

    Type CZ is an air-insulated tap changer with separate diverter switch and tap selector. Today it is the only on-load voltage regulation solution for dry type transformers of 66kV system. In various highly populated sites or critical facilities, such as urban high rises, airports, etc., CZ is an ideal fire-proof and low maintenance solution. 



    Item

    Specification

    CZ500

    3 x CZ500

    1

    Number of phases

    1 phase

    Any 3-phase connection

    2

    Maximum rated through current (A)

    500

    3

    Rated frequency (Hz)

    50 or 60

    4

    Max. rated step voltage (V)

    900

    5

    Rated step capacity (kVA)

    250

    6

    Short-circuit

    current test (kA)

    Thermal (3s)

    5

    Dynamic (Peak)

    12.5

    7

    Max. Operating Positions

    13, in linear regulation

    8

    Insulation

    (kV)

    To ground

    Highest voltage for

    equipment Um

    40.5

    Rated separate source AC

    withstand voltage (kV/50Hz,1min)

    85

    Rated lightning impulse

    withstand voltage (kV,1.2/50μs)

    200

    Between tap in service and pre-selected tap

    Rated separate source AC

    withstand voltage (kV/50Hz,1min)

    5

    Rated lightning impulse

    withstand voltage (kV,1.2/50μs)

    20

    Across the tap winding

    Rated separate source AC

    withstand voltage (kV/50Hz,1min)

    20

    Rated lightning impulse

    withstand voltage (kV,1.2/50μs)

    80

    9

    Mechanical life

    Not less than 800,000 operations

    10

    Electrical life

    Not less than 300,000 operations

    11

    Motor drive unit

    SHM-D or CMA7


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    Tel: 86 21 5270 8966
    E-mail: export@huaming.com
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