35kV Class oil-immersed transformer
| Brand | ROCKWILL |
| Model NO. | 35kV Class oil-immersed transformer |
| Rated capacity | 2500kVA |
| Primary voltage | 20kV |
| Secondary voltage | 0.4kV |
| Methods of regulation | On Load Voltage Regulating |
| Winding type | Double Winding |
| Series | S/SBH Series |
Overview
1.Iron Core
The iron core is made of cold rolled, granular-oriented, low-loss and high magnetic conductive silicon steel, which is of multi-step completely tilted structure to reduce the loss and noise.
Iron core with fixed clamps optimizes the design so as to ensure mechanical strength and to reduce leakage losses.
Adoption of PET banding structure ensures the clamp force of core column and lowers the noise.
2.Winding
Using cylinder type, foil type, screw type, continuous type and interleaved type to ensure uniform voltage distribution.
Adopting oil-oriented architecture in the winding to reduce temperature rise. To set up separate tap winding in large capacity transformers to eliminate damage when short circuit occurs.
3. Active-parts
Cold pressing ensures cleanness of the body active parts and the reliability of leads. Adoption of whole assembled phase insulation so as to reduce the assembly and effective guarantee the dimension and shape of the insulation structure.
4.Oil Tank
The oil tank of 35kV transformer adopts barrel type or bell type structure and use finned radiator. It usually don't have trolley while allocating standard base for installation. To kink the tank wall as one-stop forming to avoid weld seam.
The oil tank of 10kV transformer adopts L-bar type and use corrugated radiator. It use water proof test, air leakage test and oil leakage test to guarantee leakage free. The surface coating is strictly controlled.
Operating condition
1.working temperature：-25℃~40℃
2.Relative humidity: ＜90% (25℃)
3.No corrosive gas, no obvious dirt, etc.
4.Altitude: ＜1000m
5.Installation place: Without corrosive gas, dirt and so on
6.Special conditions: customized products are available
If you need to know about more parameters , Please check the model selection manual.↓↓↓
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