Dry type transformers

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Cast resin transformer

Max. capacity 30mva, 35kv, Customized solutions for various applications,Fire Resistant,Higher Short-circuit Strength
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  • 1250kva transformer
  • red cast resin transformer
  • epoxycast transformer
  1. 1250kva.jpg
  2. 1250kva transformer
  3. red cast resin transformer
  4. epoxycast transformer

E2 Environmental class

C2 Climate class

F1 Fireproof class

Maintance free, Sustainable

High voltage multilayer segmented cylindrical structure, low voltage longitudinal airway foil structure

Eco-friendly

Thin insulation structure, cold and thermal shock for crack resistance

Windings have high mechanical strength and no partial discharge and are non-flammable

Our product advantages

  • Magnetic Core

    Magnetic Core

    The three-limb iron core is made of oblique cut Grain-oriented, seven-step silicon steel laminations insulated on both sides, guaranteeing low losses and low noise. These values are even improved by laser treatment. It is protected on the surface with a flash-proof varnish in order to prevent the sheet from corrosion and to reduce the noise. 

  • Clamping frame

    Clamping frame

    Clamping frame processed by CNC cutting, bending and then one-time punch forming, the hole’s size is accurate and the appearance looks delicate. 


  • winding

    winding

    The winding coil is made of oxygen-free copper, class H for main insulation materials and coil is insulated by NOMEX paper of DUPONT brand, LV winding is isolated by copper foils. All these make the heat-resistant is up to 220℃, with excellent overload capacity and low loss, but high efficiency.


  • High voltage coil

    High voltage coil

    The winding coil is made of oxygen-free copper, class H for main insulation materials and coil is insulated by NOMEX paper of DUPONT brand, with excellent overload capacity and low loss.


  • Low voltage coil

    Low voltage coil

    The low voltage winding designed as foils winding, Reduction of extra losses, Balanced temperature distribution within the winding, High short-circuit capability.


Related product parameters

Main Specifications

Dry-type transformer type 

Cast resin 

Manufacturing standards 

IEC, ANSI, NFC52 etc

Rated capacity 

30kva-25MVA

Rated Voltage 

 6kv-35kv

Phases 

single or three phase 

Tapping 

With tapping links or on-load tap changer 

Impedance 

On request 

Frequency 

50/ 60Hz   

Vector groups 

Dy, Yy, Yd as standard. Other on request  

Winding materialCopper/ Aluminum

class insulation 

According to IEC 60085, Class F or Class H 

Temperature rise 

With ambient temperature in accordance with IEC 60076-11

Type of cooling 

AN/AF 

IP rate 

IP00 to IP54  

Environment class 

E2

Climate class 

C2

Fireproof class 

F1

Factory Advantages

  • Personalized customization

    Only Focused on transformers, but we offer customized different types of transformers.

  • +20 years experience

    +20 years experience R&D team, derived from a 60 years history transformer factory in Changsha city of China.

  • Drew up the National Standard for Mining Explosion-proof Substation

    GB8286 (Mining explosion-proof Mobile Substations)the product of National standard that origin and inheritor,Unique designing for customers' convenience,like “Vertically Lifting”

Applications

Dry type transformer is suitable for power transmission and distribution system, hotel, restaurant, hospitals, shopping malls, bank buildings ,stadiums, airports, stations especially heavy load centers and places with special fire protection requirements.
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Packing

packed with of wooden case
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wooden case.jpg
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Varelen Electric Co., Ltd

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