Oil Immersed Power Transformer

Oil Immersed Power Transformer

Details:
Rated power: 6000kVA Oil Immersed Power Transformer
Primary voltage: 33KV
Secondary voltage: 11KV
6000kVA oil immersed power transformer 33kV/11kV with ONAN cooling, no load tap changer ±2×2.5% tap range. Durable oil filled distribution transformer for power station, grid substation, industrial power supply, high efficiency & low loss.
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Description
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Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of oil immersed power transformer in China. If you're going to wholesale durable oil immersed power transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.

 

This 6000kVA oil immersed power transformer is a high-performance heavy-duty power transformation equipment, different from small and medium power transformers, this 6000kVA model owns larger rated load capacity for heavy industrial and large grid project use.

The transformer rated capacity reaches 6MVA, designed with 33kV high voltage primary side and 11kV low voltage secondary side, suitable for 33kV to 11kV voltage conversion. It adopts full oil immersed sealed structure, insulating mineral oil fills the tank to realize excellent insulation, heat dissipation and anti-aging performance, stable for long-time continuous operation.

This 6000kVA Oil Immersed Power Transformer is fitted with no load tap changer (NLTC) installed on the primary 33kV side. The tapping adjustment range is ±2×2.5%, which allows manual voltage regulation under power-off status. It stabilizes output voltage to adapt to different incoming voltage fluctuation on site, flexible for various grid working conditions.

 

Technical Parameter Table

 

Item

Specification

Rated Capacity

6000kVA

Phase

3 Phase

Primary Rated Voltage

33kV

Secondary Rated Voltage

11kV

Tap Changer Type

No Load Tap Changer (NLTC)

Tap Adjustment Range

±2×2.5% (Primary Side)

Cooling Method

ONAN (Oil Natural Air Natural)

Core Material

Cold Rolled Silicon Steel Sheet

Winding Material

High Purity Copper

Insulation Medium

Insulating Mineral Oil

Frequency

50Hz / 60Hz Optional

Vector Group

Dyn11 / Yyn0 Optional

Standard

IEC 60076

Installation

Outdoor / Indoor Available

Working Temperature

-25℃ ~ +45℃

Noise Level

Low Silent Operation

Service Life

25 Years+

 

Key component

 

Transformer windings are the core part of transformers, crafted from high-purity oxygen-free copper. Supported by mature craftsmanship, our windings of Oil Immersed Power Transformerfeature premium performance:

1.Great resistance to lightning, transient and long-term overvoltage

2.Excellent heat resistance, 20+ years long service life under continuous thermal operation

3.Strong short-circuit current withstand capacity

4.High mechanical structural strength

product-800-599
product-800-599

 

Our Services

Pre-Sales Support

Professional model selection by experienced engineers

24/7 technical consultation (email, phone, online)

Fast customization and design solutions

After-Sales Service

1-year warranty (extended options available)

Dedicated customer support team

Installation and maintenance guidance

Rapid response for technical issues

product-820-547

 

Factory Capability

 

As a direct Oil Immersed Power Transformer manufacturer we provide:

  • Direct manufacturer pricing: Factory-direct (Best price for 100% upfront).Skip the middleman and the long wait.
  • MOQ: 1 unit – flexible cooperation
  • Large stock available, fast delivery
  • Service: No bidding, no delays, direct deal for private projects.
  • Quality tested. Ready for your mines & factories in your country.
  • Standard production lead time: 15 days
  • Focused on Chinese power transformer supply with stable quality and compliance with multiple international standards.
  • Power utilities, installers, and EPC contractors are welcome for long-term cooperation.
product-703-528
product-703-528
product-935-701

 

Package and transport

 

product-905-907

We pack all transformer accessories into plywood cases. These boxes come with heavy-duty iron frames and non-fumigation plywood panels. The main transformer unit will be shipped bare and securely fixed inside the container. For large-sized transformers, we'll attach impact recorders to track the G-force data during ocean shipment.

 

FAQ

 

Q1: How long can you provide the quality warranty?

A1: 12 months since the date transformer operated.

Q2: Does this transformer support voltage adjustment?

A2: Yes. It is equipped with no load tap changer on 33kV primary side, tap range ±2×2.5%, adjust voltage when power off to match site voltage demand.

Q3: What is ONAN cooling method?

A3: ONAN is natural oil flow and natural air cooling, no cooling fan needed, save energy, low noise and fewer later maintenance work.

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