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QZB series of Auto Transformer

The QZB series autotransformer is designed for three-phase induction motors rated 300kW or less. It reduces the input voltage to 65%-80% of the rated value through stepped-down starting, effectively suppressing inrush current during motor startup (down to 1/3 the direct starting current). This product's multi-tap winding design complies with the IEC 60076-16-2025 standard. In heavy-duty applications such as cement plant fans and mine crushers, it can reduce grid voltage fluctuations by 15% or more, significantly minimizing impacts on the distribution system.

    Model

    Q---------------------------------voltage releasing starting

    Z----------------------------------autotransformer

    B----------------------------------transformer

    □---------------------------------control motor power KW

     

    Technical parameter

    specification

    Control motor power(KW)

    Rated working current (A)

    QZB-14

    14

    28

    QZB-20

    20

    40

    QZB-28

    28

    56

    QZB-30

    30

    59

    QZB-40

    40

    80

    QZB-55

    55

    110

    QZB-75

    75

    142

    QZB-115

    115

    230

    QZB-135

    135

    270

    QZB-190

    190

    370

    QZB-225

    225

    410

    QZB-260

    260

    475

    QZB-300

    300

    535

     

     

    specification

    External dimension

    Installation dimension

    K*J

    Weight (KG)

    Bmax

    Dmax

    Emax

    A±5

    C±5

    QZB-14

    290

    150

    240

    220

    105

    10*20

    28

    QZB-20

    290

    150

    240

    220

    105

    10*20

    30

    QZB-28

    290

    150

    240

    220

    105

    10*20

    30

    QZB-30

    320

    165

    270

    220

    115

    10*20

    40

    QZB-40

    320

    165

    270

    220

    115

    10*20

    40

    QZB-55

    320

    165

    270

    220

    115

    10*20

    40

    QZB-75

    350

    175

    280

    280

    125

    10*20

    55

    QZB-115

    390

    190

    295

    280

    135

    10*20

    70

    QZB-135

    390

    210

    315

    310

    155

    12*20

    85

    QZB-190

    390

    210

    315

    310

    155

    12*20

    85

    QZB-225

    410

    175

    340

    310

    135

    12*20

    90

    QZB-260

    410

    175

    340

    310

    135

    12*20

    90

    QZB-300

    440

    190

    360

    310

    155

    12*20

    120

    QZB-14

    480

    200

    380

    310

    155

    12*20

    130

    QZB-20

    540

    190

    430

    310

    155

    12*20

    190

    QZB-28

    560

    210

    460

    310

    170

    12*20

    200