E2 enviromental 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
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.
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 |
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