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S11-250kva oil immersed transformer

Date of issue: 2020/9/22 10:14:53 Source: http://perryswenson.com Click: zero

   S11-250kva oil immersed transformer is a new type of high-performance transformer with more reasonable structure and better performance. Because its three cores are arranged in an equilateral triangle, its magnetic circuit has no air gap and is more tightly wound. The length of the three magnetic circuits is the same and all are short. The cross-sectional area of the core column of s11-250kva oil immersed transformer is closer to that of a circle, so its performance is better S11-250kva oil immersed transformer is more suitable for urban and rural, industrial and mining enterprise power grid transformation, more suitable for combined transformer and prefabricated transformer substation.

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 S11-250kva oil immersed transformer

Performance characteristics of s11-250kva oil immersed transformer

A. the low-voltage winding of oil immersed transformer generally adopts cylindrical or spiral structure; the high-voltage winding adopts multi-layer cylindrical structure, which makes the distribution of ampere turns balanced, small magnetic leakage, high mechanical strength and strong short-circuit resistance.

B. the iron core and winding are respectively fastened. The fastening parts such as the height of the device and the low-voltage lead are equipped with self-locking locking nuts, and the structure of non hanging core is adopted, which can withstand the bumping of transportation.

C. the coil and core are dried in vacuum, and the transformer oil is filtered and injected with vacuum to reduce the moisture inside the transformer.

It is obvious that the oil tank has the function of reducing the oil tank's temperature due to the change of oil tank's height.

E. as the corrugated sheet replaces the oil conservator, the transformer oil is isolated from the outside world, which effectively prevents the oxygen and water from entering into the oil conservator, resulting in the decline of insulation performance.

F. after degreasing, derusting and phosphating, the surface of the product is sprayed with primer and finish coat, which can meet the special requirements of metallurgical and petrochemical systems and wet and dirty areas.

G. selected components, fully sealed transformer oil tank, pressure relief valve, signal thermometer, gas relay, etc. are installed according to the standard requirements to ensure the safe operation of the transformer. This series of products have beautiful appearance, small volume, and can reduce the installation area. It is an ideal maintenance free high-quality product.

Service environment of s11-250kva oil immersed transformer: Outdoor / indoor use

Normal environmental conditions: altitude no more than 1000m. Ambient temperature + 40 ℃, - 25 ℃, annual average temperature + 20 ℃

Special environmental conditions: altitude over 1000m. Ambient temperature + 40 ℃, - 45 ℃. (if it does not conform to the above conditions, it shall be specified when ordering, and appropriate adjustment can be made according to the relevant provisions of the corresponding standards.)

Standard oil immersed transformer s12501:

Power transformers (GB 1094.1 ~ 2-1996)

GB 1094.3.5-2003 power transformer

GB 1094.4-2005 power transformer

GB / t6451-2008 three phase oil immersed power transformer technical parameters and requirements

Advantages of s11-250kva oil immersed transformer:

1. Scientific design of electric power engineering to control the voltage change rate within 1 ~ 1.5%.

2. High quality new cold-rolled silicon steel sheets are used for lamination, which can effectively reduce iron loss and improve efficiency

3. Class h temperature resistant 180 ° enameled wire can reduce its own loss to,. Bare coil winding is beautiful and elegant, and its efficiency is improved.

4. Patent design, beautiful, novel, high power density, small volume, high space utilization rate.

5. Fast heat dissipation of primary and secondary air ducts,

7 galvanized tripod, outdoor weather resistance increased, service life of 20 years.

8. Special dipping process, vacuum impregnation and oven drying are adopted!

9. High temperature resistant insulation material design is adopted to make the transformer more energy-saving and quieter.

10 energy saving low noise coil with ventilation slot, smooth air flow, quickly and effectively reduce the coil temperature.

The products are divided into open type and protective type according to the structure. The protective type is to use steel plate to process the box shell. The transformer is inside the box shell, and there are inlet and outlet holes outside the box shell, so as to install the power line.

1.2. Voltmeter, ammeter, temperature control alarm system, steering wheel, etc. can be added according to the user's requirements for easy movement.

Material description of s11-250kva oil immersed transformer:

① Iron core

The new high-quality high silicon steel sheet is adopted. The main material is high-quality silicon steel sheet with thickness of 0.35 h18, h14, H12 and Z11. According to the requirements of guest rooms and service conditions, we select appropriate materials to make the performance design of Everbright transformer reach. (all series of Everbright transformer are brand new high quality silicon steel sheet?).

② Wire rod

Pew, UEW, EIW, seiw, FEAI enameled wire and glass wire are used. The temperature resistance grade is f (155 ℃), H (180 ℃), HC (200 ℃), C (220 ℃). (the conventional temperature resistance level is H level, 180 ℃, HC, C level, which requires special instructions).

③ Insulating materials

Using high temperature resistant insulation paper as insulation material, it has multiple properties of high temperature insulation, flame retardant and moisture resistance.

④ Terminal block

Small power terminal block, beautiful appearance, excellent pressure resistance, temperature resistance, flame retardant performance. High power copper bar is used.

⑤ Iron foot

CNC bending cold binding plate is mainly used, and environmental protection electroplating such as multicolor (golden yellow), blue zinc (silver white), white zinc (ivory white), surface anodizing (black) can be selected.

After sales policy of s11-250kva oil immersed transformer:

The quality of oil immersed transformer is guaranteed for three years.

Our factory produces all kinds of transformer, voltage regulator and voltage regulator, which can be customized according to customer's requirements, sizes and specifications

We are responsible for the replacement of the products within the warranty period.

4. The mobile phone number of the technical and after-sales supervisor of the factory is opened 24 hours a day. According to the user's requirements, the product after-sales treatment can be divided into 24 hours, 48 hours and the time agreed with users

5. In case of power failure due to product accidents, our company promises to arrive at the scene within 24 hours (within 48 hours in remote areas) in developed traffic areas, so as to ensure the completion in a short time.

S11-250kva oil immersed transformer is a new type of high-performance transformer with more reasonable structure and better performance. Because its three cores are arranged in equilateral triangle, its magnetic circuit has no air gap, and the winding is more compact. The length of the three magnetic circuits is the same and all are short. The cross-sectional area of the core column is closer to the circle, so the performance is further improved and the loss is improved The product is more suitable for power grid transformation in urban and rural areas, industrial and mining enterprises, and more suitable for combined transformer and prefabricated transformer substation.


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