Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of oil immersed distribution transformer in China. If you're going to wholesale durable oil immersed distribution transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
This 125 KVA oil immersed distribution transformer is a widely used three-phase oil cooled transformer for medium and low voltage power distribution systems. With standard rated power 125KVA, primary voltage 11kV and secondary voltage 0.4kV, it is the ideal power distribution equipment for urban power grid renovation, rural electric network, industrial factory, commercial building, mining station and new energy power supply projects.
This 125KVA oil immersed distribution transformer works at 50Hz standard frequency, 4% standard impedance voltage with Class A insulation grade. It can adapt to ambient temperature from -25℃ to +40℃, cope with harsh outdoor weather and frequent load changes. Equipped with oil level gauge, pressure relief valve, temperature detection accessory, the transformer owns complete protection functions to prevent sudden circuit failure and extend service life.
The transformer core adopts high-grade cold-rolled grain oriented silicon steel sheet, adopting advanced 45° miter joint and step overlapping lamination structure. This optimized laminated design reduces magnetic flux leakage obviously, effectively cuts down no-load loss, lowers no-load current and reduces operating noise greatly. Compared with ordinary transformer core, this structure delivers higher energy efficiency and more stable long-term running performance.
Technical Specifications
|
Item |
Specification |
|
Rated Capacity |
125 KVA |
|
Phase Number |
Three Phase |
|
Primary Voltage |
11kV |
|
Secondary Voltage |
0.4kV |
|
Frequency |
50Hz / 60Hz Optional |
|
Cooling Method |
ONAN Oil Natural Air Natural |
|
Core Material |
Cold-rolled grain oriented silicon steel sheet |
|
Core Structure |
45° miter joint, step overlapping lamination |
|
Winding Material |
High-purity oxygen-free copper |
|
Insulation Class |
Class A |
|
Impedance Voltage |
4% |
|
Connection Group |
Dyn11 / Yyn0 Optional |
|
No-load Loss |
Low energy consumption design |
|
Load Loss |
Optimized low temperature rise |
|
Overload Capacity |
150% short-time overload |
|
Working Temperature |
-25℃ ~ +40℃ |
|
Tank Type |
Fully sealed corrugated oil tank |
|
Installation |
Outdoor / Pole mounted / Substation |
|
Service Life |
Over 25 years |
|
Executive Standard |
IEC 60076, GB/T Standard |
|
Customization |
OEM, voltage, impedance, logo customized |
Key Advantages
● Premium core with 45° miter joint & step overlapping structure, ultra low no-load loss and low no-load current
● High-purity oxygen-free copper winding, anti-overvoltage, short-circuit resistance and high mechanical strength
● ONAN oil natural air natural cooling system, excellent heat dissipation for long continuous operation
● Fully sealed corrugated tank, waterproof, dustproof, suitable for outdoor pole mount & substation use
● Compliant with IEC 60076 international standard, 25+ years service life, low maintenance cost
● Custom voltage ratio, impedance, connection group and OEM service available
Scope of Supply
Oil Immersed Distribution Transformer
Rated Power: Up to 5000 KVA
Primary Voltage: Up to 35 KV
Standard accessories (bushings, conservator optional, thermometer, etc.)
Test reports and technical documentation
Customization Options
We provide tailored transformer solutions based on your project:
Voltage ratio customization (HV/LV)
Copper or aluminum winding options
Special loss requirements (low loss / eco design)
Tap changer (off-load / on-load)
Anti-corrosion or special environmental design
Compact or lightweight structure
FAQ
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