| Brand | ROCKWILL |
| Model NO. | Customization 35kV 38kV 40kV 40.5kV Class Three-phase oil-immersed Power 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
As a pioneer in China's power transformer industry, we have specialized in the R&D and manufacturing of power transformer equipment for decades, and established industry standards with core technologies.
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.
The voltage classes of some of these Power Transformer include 6kV, 6.3kV, 6.6kV, 6.9kV, 7.2kV, 10kV, 10.5kV, 11kV, 11.5kV, 12kV, 13.2kV, 13.8kV, 14.5kV, 14.4kV, 15kV, 15.5kV, 15.6kV, 17.5kV, 20kV, 21.9kV, 22kV, 24kV, 30kV, 33kV, 33.5kV, 34.5kV, 35kV, 36kV, 38kV, 38.5kV, 40.5kV, 44kV, 45kV, 46kV, 66kV 69kV.72.5kV 88kV 110kV 115kV 123kV 125kV 126kV 132kV 138kV 145kV 150kV 154kV 161kV 170kV 220kV 225kV 230kV 245kV 275kV 330kV 345kV 363kV 380kV 400kV 500kV Power transformers of voltage ，and aboveand customization is available.
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
This power transformer is fully compliant with international standards including IEC 60076-1, IEEE C57.12.00, ANSI C57.12.90, AS/NZS 60076.5 and EN 61558-1. It meets quality requirements and is widely adaptable to the operational needs of power grids in multiple overseas regions.
Application Field
Power Industry
New Energy Industry
Industrial Manufacturing Industry
Infrastructure and Public Services Industry
If you need to know about more parameters , Please check the model selection manual.
