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High Voltage Oil Immersed Distribution Transformers

Product description

The three-phase 10kv oil-immersed transformer adopts advanced production technology, and the capacity is from 30KVA to 1600KVA.

It is designed from corrugated cardboard instead of oil storage tanks, so the oil is placed separately from the outside world. In addition, the coil and iron core are processed by vacuum drying. All these functions are designed to obtain better insulation performance. In return, the transformer does not need to change oil during long-term operation. Low maintenance cost and long service life.

1、 What is an oil immersed transformer?

Oil immersed transformer, also known as oil immersed transformer, is a transformer device that uses oil cooling to reduce the temperature of the transformer. Unlike dry transformers, the main body of an oil immersed transformer is installed in a welded steel oil tank filled with insulating oil. When an oil immersed transformer is in operation, the heat from the coil and iron core is first converted into insulating oil and then into cooling medium. According to the capacity, it can be divided into immersed Free cooling transformer and immersed forced air cooling transformer.

2、 The structure and working principle of oil immersed transformers

Oil immersed transformers are structurally similar to transformers It is one of the types of transformers classified according to the insulation form of the iron core. Therefore, it has recognizable features of oil immersed coils, which can reduce the heat map of the equipment inside.

The basic components of the oil immersed type are composed of magnetic cores, windings, and bushings. The magnetic core provides a path for magnetic flux. The winding creates a magnetic field consisting of a conductor coil wound around an iron core and insulated with a cardboard barrier and shielding layer. The thickness of the winding insulation layer increases with increasing voltage. The bushing connects the transformer winding to the substation.

Oil type transformers are used for power distribution or substations. Their core and coils are immersed in oil, which can cool and insulate. Oil circulates through the pipes in the coil and around the coil and iron core components through convection. The oil is cooled externally by the fuel tank at low rated values, and by an air-cooled radiator at high rated values.

3、 Types of oil immersed transformers

There are two main types of oil immersed transformers: single-phase transformer and three-phase transformer.

A. One phase oil immersed transformer

B. Three-phase oil immersed transformer

4、 Purpose of using oil immersed transformers

Oil type transformers can be installed on the ground, base, or pole for outdoor use. They provide efficient performance in various applications, including transmission and distribution networks, renewable energy generation, and small industries.

The oil transformer has a huge capacity, so it will save a lot of electricity, minimize energy loss, save energy, and reduce user costs. Not only that, the oil in the machine can also cool the internal wire cores, thereby improving the durability and electrical performance of transformer equipment.

5、 Precautions for using oil-immersed transformers

1. Oil immersed transformers use oil for operation, so the quality of the oil will significantly affect the lifespan and safety of the transformer.

2. During use, it is necessary to regularly inspect and maintain the transformer system to ensure the normal and safe operation of the machine. Otherwise, there is a high risk of problems and extreme danger.

3. The waste generated by petroleum is prone to polluting the environment and affecting the lives of surrounding people. Therefore, the gradual disposal of waste is also important

Traduction pour : Transfo H61 20KV 160kVA  B2

H61 Transformer 15(20)kV 160kVA B2

Three-phase MV / LV distribution transformer with MV and LV windings in wound copper power P = 160KVA

- Compliance: NFC 52 100 - 52 112 and 52 113 standard or equivalent in substance

- Natural cooling: ONAN

- MV voltage adjustment: by switch off +/- 5% in five (5) positions

- Type: on post H61

- Nominal power: 160KVA

- Primary rated voltage: 20,000V ± 5%

- Secondary voltage: 410V off-load between phases / 240V between phase and neutral

- Frequency: 50Hz

- Short-circuit voltage: 4%

- No-load loss less than or equal to 300W

- Load loss less than or equal to 2000W

- Coupling: Dyn11 with output neutral

- MV and LV crossings: in porcelain

Technical Parameters

Company Profile

Henan Fengyuan Power Technology Co., Ltd., founded in July 2010, has a registered capital of 20 million yuan, a fixed asset of 50 million yuan, more than 200 employees and an annual output value of nearly 100 million yuan. It's specialized in r&d and production of complete sets of high and low voltage equipment such as box-type substation, distribution cabinet/box, drawer cabinet, ring network cabinet, inflatable cabinet, cable distribution box,etc.And to undertake part of the power installation and line renovation projects. With the concept of "honesty, customer first",we will provide our customers with high quality and efficient service.

We provide competitive prices, high quality products, timely shipment and efficient services to develop our cooperation with all of our customers. We are trading in accordance with international traditions and practices. We would like to extend business with our customers and partners on the basis of cooperation and mutual benefit.

Production

EXHIBITION

FAQ

Q1: Can the price be negotiated?

Yes, the price is negotiable. It can be changed according to your quantity or package.

Q2: What is the capacity of your transformer?

We can supply transformers with a capacity below 12500 kva.

Q3: What is the altitude of your transformer used?

We are able to supply ordinary transformers(The altitude is less than 1000m) and plateau transformers(The altitude is greater than 1000m) according to your requirements.

Q4: What is the difference between copper core and aluminum core of transformer?

The mechanical strength of aluminum coil is worse than that of copper coil;

The thermal stability of aluminum wire is poor, so aluminum wire ring is easy to be burned;

The production cost of aluminum wire is lower than that of copper wire.

Q5: What is the connection mode of your transformer?

We mainly produce Dyn11 and Yyn0 transformers, which can be designed and manufactured according to your requirements.

Q6: Are your transformers supported for customization

Yes, of course.

Q7: What is the function of transformer oil?

Insulation, heat dissipation and arc extinction.

Q8: How can you ensure your After-sales Service?

We do it in strict accordance with the contract, so that customers can buy our products with confidence.

Q9: Are you a trading company or a manufacturer?

We are the most powerful manufacturer and exporter in the industry, so we can supply product for you with Factory Price.

This product is usually customized. 

We are a manufacturer and have a professional technical department that can design and provide solutions according to customer needs. 

Please contact our sales personnel to obtain design drawings

Here are our customer examples for your reference

Standard Bidding document for supply and delivery of distribution transformers

Procurement Reference Number : ZETDC7DOM/14/2021

Technical Specifications

1 Scope

This specification calls for supply and delivery of distribution transformers,the details of each transformer are as specified in schedule of requirement

2 Determination of Responsiveness

Tenders should quote for delivery of the transformers complete with the ancillary equipment ,fully wired . but dismantled to suitable components for delivery purpose to ZETDC Central Stores.

3 Particulars of electrical system

Unless otherwise specified in Schedule of Requirement.It must be assumed that the system on which the equipment will operate is:

a). Three phase overhead-line construction and underground system.the maximum earth fault factor on the network is 1.5

b). Operated at 50 Hz,with approximately sinusoidal wave form.

c). The highest system voltage does not normally exceed the norminal system voltage by more than 10%. the norminal system voltages are 33kv and 11kv

d). The system frequency variation does not exceed plus or minus 2.5% from 50 Hz designs should allow for these variations

4 Particulars of environment

The transformers shall be capable of operating under the following environmental conditions

a). At an average altitude if 1500m above sea level

b). Ambinet air temperature not exceeding a macimum of +45℃ or below -10℃ with a daily maximum average of 35℃

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We will initially maintain the business philosophy of quality and continue to provide our customers with superior Manufacturer of Distribution Transformer, 10kv Oil Power Transformers. Our products have exported to many countries all over the world. We respect the enterprise spirit of 'pragmatic, hard work, and responsibility', and create a good corporate environment with integrity, win-win, and innovative business philosophy.