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Mining Transformer Series

The Mining Explosion-proof Dry-type Transformer

The Mining Explosion-proof Dry-type Transformer is applicable for places where underground coal mines are humid, contain gas and coal dust, and have explosion risk, and provides power supply for the comprehensive mechanical coal mining equipment or hand-held electric drill, lighting and other devices.

  • Rated 

    Capacity 

    (kVA)

    Voltage Combination (kV)

    Connection Unit Symbol

    Loss

    Impedance 

    Voltage (%)

    No-Load 

    Current (%)

    Primary Voltage

    Secondary 

    Voltage

    No Load

    Load

    50

    6±5%

    0.693/0.4

    Yy0(d11)

    350

    550

    4

    2.5

    100

    520

    920

    4

    2.5

    200

    820

    1550

    4

    2

    315

    1.2/0.693

    1100

    2150

    4

    1.8

    400

    1300

    2600

    4

    1.8

    500

    1500

    3100

    4

    1.5

    630

    1800

    3680

    4

    1.5

    800

    1.2/0.693
    3.45

    Yy0(d11)
    Yyn0

    2050

    4500

    4

    1

    1000

    2350

    5400

    4

    1

    1250

    2750

    6500

    4

    1

    1600

    3350

    8000

    4

    0.8

    2000

    3.45

    Yyn0

    3800

    9500

    4.5

    0.6

    2500

    4500

    10600

    5

    0.6

    3150

    5300

    12500

    5.5

    0.6

    4000

    6100

    14000

    6

    0.6

    5000

    7210

    17640

    6

    0.6

    6300

    8070

    19055

    6

    0.7

  • 1) Low No-load Losses

    1. Uses high-quality silicon steel sheet.

    2. Wound iron core fully utilizes orientation of the silicon steel sheet. The magnetic property is restored through annealing process, reducing its no-load losses by 20% to 35%.

    2) Low Noise

    The noise is from the iron core, and is transferred to the surrounding through the housing.

    Measures for noise reduction:

    1. Reduce the noise source, and adopt the seamless wound iron core, compact structure, small magnetostriction and low noise.

    2. The connection joints are added with silicon sheet, which cuts off the noise spreading approach.

    3) Light Weight and Small Volume.

    4) It is explosion-proof and damp-proof.

    5) Energy Conservation and Environmental Protection

    1) Adopt a Nomex paper-wrapped line with insulation grade C that is imported from American DuPont Company. It uses air insulation and cooling. It has no pollution on the environment, and the product has long service life; the product can be decomposed for recovery after the service life ends;

    2) The high-quality 30Q130 cold-rolled oriented silicon steel sheet and oxygen-free copper conductor are adopted, so that the actual total loss is lower than that of the other similar products.It saves the energy, and lowers noise.


  • 1.The elevation shall not exceed 1,000m;

    2.Ambient temperature    Maximum temperature                             +40℃/104°F

                                            Maximum daily average temperature       +30℃/86°F

                                            Maximum annual average temperature    +20℃/68°F

                                            Minimum temperature                               -5℃/23°F

    3.The relative humidity shall not exceed 95% (at +25 ℃/77°F).

    4.Mines with a mixture of methane gas and coal dust, and a risk of explosion;

    5.Places without strong bump and vibration and with inclination from the vertical plane not exceeding 15°;

    6.No sufficient gas or vapour to cause metals corrosion or insulation damage;

    7.Places without dripping;

    8.The waveform of the supply voltage is similar to the sine wave;

    9.The three-phase supply voltage is approximately symmetrical.


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  • PhoneChina:15234310529,Canada:+1 (306) 713-2408
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Your local Huaxin Service Team

  • NameKai Wang
  • Address 813 46th Street East, Saskatoon, Saskatchewan S7K 0X1, Canada
  • PhoneChina:15234310529,Canada:+1 (306) 713-2408
  • FaxChina:+86 (0)353-4909788
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Submit your inquiry
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Your local Huaxin Cooperation Team

  • NameKai Wang
  • Address813 46th Street East, Saskatoon, Saskatchewan S7K 0X1, Canada
  • PhoneChina:15234310529, Canada:+1 (306) 713-2408
  • FaxChina:+86 (0)353-4909788
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