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  • WSL, WDL

    WSL, WDL

    WSL, WDL

    Type WSL De-Energized Tap Changer (herein referred as tap changer) is of in-tank structure and without separate oil compartment. It is mounted to transformer tank by a tap changer head ange.

    By the operation method, tap changer can be divided into motor driving at man position, and manual drive mechanism operating at man position as well as hand wheel manual operation on the top. 


    Item

    Specification

    WSL, WDL

    1

    Max. rated through-current (A)

    600

    800

    1000

    1200

    1600

    2000

    2400

    3000


    Short-circuit

    current test (kA)

    Thermal (3s)

    9

    12

    15

    15

    20

    24

    26

    30

    Dynamic (Peak)

    22.5

    30

    37.5

    37.5

    50

    60

    65

    75

     2

    Rated frequency (Hz)

    50 or 60

    3

    Connection

    3 phases (WSL), single phase (WDL)

    7

    Max. Operating Positions

    Max. 5 for types A and B, max. 11 for type D and max. 17 for type E

    8

    Insulation

    to ground

    (kV)

    Highest voltage for

    equipment Um

    12

    72.5

    126

    145

    170

    252

    Rated separate source AC

    withstand voltage (kV/50Hz,1min)

    35

    140

    230

    275

    325

    460

    Rated lightning impulse

    withstand voltage (kV,1.2/50μs)

    75

    325

    550

    650

    750

    1050

    9

    Contact circle diameter

    Type A: ⌀350; type B: ⌀500; type D: ⌀600; type E: ⌀750

    10

    Mechanical life

    Not less than 20,000 operations for manual driving

    Not less than 100,000 operations for motor driving

    13

    Motor drive unit

    SHM-D or CMA7


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