E2 Environmental class
C2 Climate class
F1 Fireproof class
Maintance free, Sustainable
High voltage multilayer segmented cylindrical structure, low voltage longitudinal airway foil structure
Thin insulation structure, cold and thermal shock for crack resistance
Windings have high mechanical strength and no partial discharge and are non-flammable
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.
GB8286 (Mining explosion-proof Mobile Substations)the product of National standard that origin and inheritor，Unique designing for customers' convenience,like “Vertically Lifting”
Varelen Electric Co., Ltd