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Mining transformer series

Explosion-proof dry transformer for rectifying power supply

The explosion-proof dry transformer for rectifying power supply It is applicable for the place with west environment under the coal mine, including gas and coal dust, and with explosion hazard, coordinates with the rectifier equipment, and provides power supply for the equipment.

  • Rated capacity (kVA)

    Voltage combination (kV)

    Connection unit symbol

    Loss

    Impedance voltage (%)

    No-load current (%)

    Load level

    Grid side voltage

    Valve side voltage

    No load

    Load

    500

    6±5%

    0.48

    Yd11

    1500

    3100

    6

    1.5

    V

    630

    1800

    3680

    10

    1.5

    800

    2050

    4500

    10

    1

    1000

    2350

    5400

    10

    1

    1250

    2750

    6500

    10

    1

  •  

    1. Low no-load loss

    The high-quality cold rolled grain-oriented silicon steel sheet with high permeability and low loss is adopted for manufacturing. 45° fully-beveled seamand multi-stage step stacking structure, which effectively reduces no-load loss, no-load current and noise.

    2. Low noise

    The noise is from the iron core, and is transferred to the surrounding through the shell. The connecting position is added with silica gel plate, which cuts off the noise spreading approach.

    3. Light weight and small volume

    5. The explosion-proof dry transformer for rectifying power supply as the explosion-proof and damp-proof performance.

    5. Energy conservation and environmental protection

    1) Nomex paper-wrapped line with insulation grade C imported from American DuPont Company is adopted, 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 is ended;

    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 foreign similar products, which saves the energy, and lowers noise. The iron core surface is applied with the high-temperature-resistant rust-proof and damp-proof paint, Grade H insulation material is adopted for the iron core insulator, and there is no damage after operation at high temperature for a long term.

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