Dry type transformer

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cast resin transformer

High voltage multilayer segmented cylindrical structure, low voltage longitudinal airway foil srtucture, Insulation class H
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E2 evviromental class

C2 Climate class

F1 Fireproof class

Maintance free

Sustainable

Eco-friendly

Thin insulation structure, cold and thermal shock for crack resistance

Our product advantages

The company's workshop is dust-free, constant temperature, constant humidity, with imported production technology equipment, to achieve the production process information, lean, intelligent
  • 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.


  • Insulation class H

    Insulation class H

    Varelen practices strictly exclusive casting system of F(155℃) or H(180℃), and the epoxy resin is injected and casted in the vacuum machine, so it’s highly insulated, dust-proof and moisture-proof, which ensures stable and reliable performance


  • Tap changer

    Tap changer

    Tap changer is available to adapt respective network conditions.


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

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

    One of the drafters of Chinese National Standard (for Mining explosion-proof Mobile Substations). Unique deisgning 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. Dry type transformer is the best choice for specific markets where safety or ecology are main concerns.

Packing

packed with of wooden case
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wooden case.jpg
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Contact us

Varelen Electric Co., Ltd