Welcome to the product page of ChinaUnita Electric transformers.
We produce and customize a full range of 10kV power transformers with various specifications.
You can send your detailed demands to our customer service team. We will communicate with you quickly and offer quotations within 3 minutes. Normally goods can be delivered in 5 days (the exact lead time depends on order quantity).
Contact us – Distribution transformer,Oil immersed transformer,Dry type transformer-Unita Electric
Important Note
All our transformer quotations are based on full copper winding by default. Please inform us if you need aluminum or other materials.

Basic Product Information

- Name: 10kV Oil-Immersed Power Transformer
- Model: S11-630kVA, 10kV / 0.4kV distribution transformer
- Origin: Suining County, Xuzhou City, Jiangsu Province, China
- Supply Mode: Custom production, factory direct sales without middlemen markup.


Core Characteristics of S11-630kVA Oil-Immersed Transformer
- High-performance iron coreThe core is made of high-permeability grain-oriented cold-rolled silicon steel sheet.It adopts full miter-lamination stacking structure. The core column is designed as multi-step circular cross-section. This structure effectively reduces no-load loss and no-load current.
- Optimized winding structureThe winding uses corrugated oil duct without varnish dipping technology, fixed by binding tapes.All coils adopt concentric winding style. The high-voltage winding is fitted with taps for voltage regulation, which connect to an on-load tap changer.This design improves heat dissipation efficiency and strengthens short-circuit resistance.
- Temperature monitoring designEach S11 oil transformer reserves a base for glass thermometer on the top of the fuel tank.The thermometer tube extends 120±10 mm into transformer oil, which monitors oil temperature in real time for safe operation.

Factory Advantages
- Complete production chain, all core parts self-produced;
- Direct factory sales to cut intermediate costs;
- Flexible customization for different distribution projects;
- Strict factory inspection before shipment to guarantee full-copper material.