1000KVA 10/0.4KV Oil Power Transformer

1000KVA 10/0.4KV oil power transformer

 

The oil immersed transformer adopts three-dimensional wound iron core. Because its three iron core pillars are arranged in equilateral triangle three-dimensional, the winding is tight, the three magnetic circuits have the same length, and the magnetic circuit has no air gap. Shortest, core leg cross-sectional area closer to circular, further improving performance, reducing losses, reducing noise, balancing three terms, and reducing third harmonic components. But due to the pressure regulating switch being inside the water tank. When adjusting the pressure, the contacts of the switch cannot be seen from outside. There are two types of reaction phenomena: poor contact and open circuit. If the contact is not good, it is easy to burn out the switch when the load is too large.

Oil immersed transformers are important equipment in the power system, mainly used to change voltage and transmit electrical energy. Oil immersed transformers mainly operate based on the principle of electromagnetic induction. Suitable for power grid transformation in urban and rural areas, industrial and mining enterprises, and more suitable for combination transformers and pre installed substation transformers.

 

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

 

Operating temperature of oil immersed transformer

When the oil immersed transformer is working, it is necessary to ensure that the working temperature will not cause the transformer oil to deteriorate too quickly, thus increasing the operating cost. When the operating temperature of the oil immersed transformer reaches 85 degrees Celsius, an alarm will be triggered. When the maximum temperature reaches 95 degrees Celsius, the switch of the transformer will be turned off.

Therefore, it is stipulated that the oil temperature at the upper working temperature of oil immersed transformers cannot exceed 85 ℃. The rated capacity of a transformer refers to the maximum power allowed for long-term continuous operation when the transformer can achieve economically reasonable efficiency and normal expected service life under the specified environmental temperature. The specified environmental temperature for transformers is a maximum temperature of 40 ℃, a maximum daily average temperature of 30 ℃, a maximum annual average temperature of 20 ℃, a minimum temperature of -25 ℃ for outdoor transformers, and -5 ° C for indoor transformers.

According to operating experience and specialized research, when the insulation temperature of the transformer winding is within the range of 80-140 ℃, the insulation life loss doubles and the service life decreases by half for every 6 ℃ increase. This is the 6 ° C rule for transformer operation. The maximum allowable temperature for long-term operation of transformer windings is the normal service life temperature, and the maximum allowable value for winding hot spot temperature is the safe temperature.

In order to achieve the most economical service life of insulation materials, they are divided into different heat resistance levels such as Y, A, E, B, F, H, C, etc. based on their maximum allowable working temperature. Normal situation. The maximum allowable working temperature for Class Y insulation is 90 ℃, Class A is 105 ℃, Class E is 120 ℃, Class B is 130 ℃, Class F is 155 ℃, Class H is 180 ℃, and Class C is above 180 ℃

 

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

 

PRODUCT PHOTO

 

FACTORY WORKSHOP

COMPANY OVERVIEW

EXHIBITION

PACKING&DELIVERY

FAQ

Q5 : Is OEM/ODM available?

A: Yes, it is! Our products can be Customized. We have design and engineer teams,we can customize products according to customers' drawing or requirements.

 

Q6 : You are manufacturer or trading company?
A: We are factory, As a 100% professional manufacturer with 20 year's manufacturer experience, we could produce products according to customers' requirements and we could also control the quality of products 100%.

 

Q7 : Can the price be negotiated?

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

 

Q8 : How about inspection?

A: We have the whole inspection system from raw material to end products include temperature rise test,salt spraying test conductor type test,mechanical life test.

 

Q9 : What is payment terms?

A: T.T, Paypal,Western Union,Alibaba trade assurance and L/C is acceptable. 30% T/T in advance ,70% balance before shipment.

 

Q10 : What is the service offered by company?

A: We have the professional engineer team which can design and develop the mold to arrive different customer requirement.

We also have the sales team to offer good service from pre-sale to after-sale.

 

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

Uzbekistan customer

Data Sheet N° 1-A: Transformer H61 20kV/400V of 100kVA

DESIGNATIONS	UNITS	SPECIFIC DATA	CANDIDATE DATA
Maker		To be indicated
Reference standard		IEC 60076
Type		Phase
Vat		Hermetic
Execution		Tropicalized
Dielectric		PCB-free oil
Installation		On pole
Operating ambient temperature	°C	45
Rated frequency	Hz	50
Rated power	Kva	100
Rated primary voltage	Kv	20
Isolation level assigned to primary school	Kv	24
Number of phases in primary school		03
Secondary voltage	V	400/230
Voltage adjustment range on the M side when unladen	%	±2.5
Coupling		DYn11
Short circuit voltage	%	4 – 4.5
Neutral sized for one load	%	100
Maximum vacuum losses	W	230 - 460
Losses due to Maxi load	W	1450 - 2350
Maximum steady-state oil temperature	°C	55
Maximum temperature of the windings in steady state	°C	60
Winding material		Electrolytic copper
Maximum noise level	Db	52
50Hz industrial frequency hold, 1 min	Kv	50 – 70
Shock wave resistance (1.2/50 micros)	Kv	125 - 170
Cooling		ONAN
Nameplate		01
Grounding connection		01
Dimensions Height/width/depth	mm x mm x mm	1200 X 1270 X 820
Total mass of transformer including oil	Kg	700
Oil mass	Kg	160
PAINT
		Tropicalized and anti-rust
	Number	Layers
		Binder
		Colour
		Plans and technical diagrams to be provided.

 

 

IF NEED MORE DETAILES,PLEASE FEEL FREE YO CONTACT US

 

Hot Tags: 1000kva 10/0.4kv oil power transformer, China, manufacturers, suppliers, customized, 10 Kv Electrical Power Transformer, Overhead MV and LV structures, electric power transformer, High Efficiency Oil Type Distribution Transformer, Oil Immersed Distribution Transformers, 25kVA single phase transformer