Pole-Mounted Oil-Immersed Transformer (Integrated Set)

Product Overview

Our Pole-Mounted Oil-Immersed Transformer Set is an integrated solution consisting of:

• Power Transformer

• Outdoor High Voltage Vacuum Circuit Breaker

• Outdoor High Voltage Dropout Fuse Cutout

• Outdoor High Voltage Zinc Oxide Surge Arrester

• Low Voltage Integrated Distribution Box (JP Cabinet)

• Cable, Brackets, and Accessories

Function: The transformer steps down 11kV high voltage AC, through the outdoor fuse cutout or vacuum circuit breaker and surge arrester, into safe low voltage AC, which is then distributed via the low-voltage cabinet to various branch circuits.

Performance:

• Meets and exceeds GB and IEC standards

• Certified by CB, CCC, KEMA

• Proven reliability in over 50 countries worldwide

• Ideal for rural and urban power grids, 50Hz / 60Hz, 11kV networks

• Exported widely to Central Asia, Southeast Asia, Africa, and South America

Standards:
IEC60076-1, IEC60076-2, IEC60076-3, IEC60076-5, IEC60076-7, IEC60076-20, IEC 60836, IEC 60944
GB/T6451-2015, GB 1094.1~5, GB/T 1094.7, GB/T 2900.95, JB/T 10088, GB 20052

Product Advantages

> Advanced Technology

• High voltage copper strip winding, enhanced lightning protection

• Low voltage copper foil winding, top-grade Class A insulation

• Low magnetic leakage, strong mechanical strength, excellent short-circuit resistance

• Core with 45° full-miter step-lap structure

Achieves 5% material savings and 10-20% lower energy loss vs. conventional products.
Patented “multi-layer brushing stacked end ring” significantly improves short-circuit withstand capability.
Meets national GB and IEC standards for efficiency and low loss.

> Enclosure

• Precision machining with Mitsubishi laser cutting and CNC equipment

• ABB robot dual-layer internal & external welding with laser inspection; pass rate 99.99998%

• Electrostatic powder coating, corrosion-resistant for 30 years

• Fully sealed, maintenance-free, 30+ years service life

> Core

• Premium cold-rolled grain-oriented silicon steel from Baosteel & WISCO

• Optimized cutting and stacking minimizes core loss, no-load current, and noise

• Reinforced core structure ensures stability during operation and transport

> Windings

• Low voltage winding: high-grade copper foil (optional aluminum foil), superior insulation performance

• High voltage winding: insulated copper wire (optional aluminum), patented winding technology

• Excellent resistance to radial stress from short circuits

> High-Quality Materials

• Silicon steel sheets from Baosteel, WISCO

• Premium oxygen-free copper

• High-quality transformer oil (#25) from Kunlun Petrochemical

> Other Features

• Tinned copper busbar low-voltage terminals

• Tinned bolt high-voltage terminals

• Standard off-circuit tap changer (5 or 7 positions), on-load tap changer optional

• 800kVA+ models include gas relay, over-temperature alarm, Buchholz protection

• Galvanized Q235 (A3F) steel mounting frame, easy for transport and installation

• Available in Oil-Immersed and Amorphous Core types