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 processed by CNC cutting, bending and then one-time punch forming, the hole’s size is accurate and the appearance looks delicate.
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.
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 is available to adapt respective network conditions.
Dry-type transformer type
IEC, ANSI, NFC52 etc
single or three phase
With tapping links or on-load tap changer
Dy, Yy, Yd as standard. Other on request
According to IEC 60085, Class F or Class H
With ambient temperature in accordance with IEC 60076-11
Type of cooling
IP00 to IP54
Only Focused on transformers, but we offer customized different types of transformers.
+20 years experience R&D team, derived from a 60 years history transformer factory in Changsha city of China.
One of the drafters of Chinese National Standard (for Mining explosion-proof Mobile Substations). Unique designing for customers' convenience,like “Vertically Lifting”.
Varelen Electric Co., Ltd