Cast resin transformer

Max. capacity 30mva, 35kv, Customized solutions for various applications,Fire Resistant,Higher Short-circuit Strength

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

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Our product advantages

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

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 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 material	Copper
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

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Personalized customization

Only Focused on transformers, but we offer customized different types of transformers.
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+20 years experience

+20 years experience R&D team, derived from a 60 years history transformer factory in Changsha city of China.
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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 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. Dry type transformer is the best choice for specific markets where safety or ecology are main concerns.