Mining transformers


Flame-proof mobile substation

Excellent explosion-proof performance and mechanical strength
  • mining type transformer
  • EXD transformers
  • mining substations
  • 500kva mining substations
  1. mining type transformer
  2. EXD transformers
  3. mining substations
  4. 500kva mining substations

Special & harsh environmental

Excellent explosion-proof performance and mechanical strength

Vertically lifted structure adopted

Adopted cylinder-type HV winding to strengthen resistance to over-voltage

Excellent over-load resistance and insulated performance by using Dupont Nomex paper

Fire-proof, nonpoisonous air created

Low noise


Our product advantages

  • Iron core

    Iron core

    Superior silicon lamination for steel core, the lamination joint is processed by oblique cut angle and the latest new technology “seven-step”, which ensures small no-load loss and current.

  • Vertically lifted structure

    Vertically lifted structure

    Special anti-loose structure with vertical lifting ability, no internal looseness during transportation, easy to use and maintain

  • insulation material

    insulation material

    Main insulating material is C-class and Nomex paper is adopted, plus the oxygen-free copper winding, which ensures small partial discharge, small no-load and load loss, and low temperature rise.

  • Enclosure


    Excellent explosion-proof performance and sufficient mechanical strength. 

  • High voltage switch

    High voltage switch

    Equipped with rail wheels, strong impact resistance ability, detachable and adjustable rail gauge.

  • Low voltage switch

    Low voltage switch

    Multiple protective functions of overload, short circuit, leakage, leakage lockout, over-voltage, under-voltage and over temperature. 

Related product parameters

Main Specification

Transformer type

Three phases, dry type



Rated capacity

Up to 8000kVA 

Rated voltage

10kV 690V

Insulation class


Cooling mode


Zone2 zone

Explosion-proof type


Connection code

Yd, Dyn, Yyn etc.

Protection classIP54  IP55

Executive standard


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Factory Test



Mining Flame-proof Mobile Substation is designed especially for the environment of methane mixture gas, coal dust and potentially explosive areas. It’s widely used in coal mines, non-ferrous metal mines, tunnel projects etc.
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Contact us

Varelen Electric Co., Ltd

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