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Scb10-125kva dry type transformer

Date of issue: 2020/8/31 15:13:24 Source: http://perryswenson.com Click: zero

   1. Product introduction

Scb10-125kva dry-type transformer adopts international advanced design, production and testing equipment and is manufactured according to strict process. The product has the characteristics of high reliability and long service life. According to different use environment, the enclosure with different protection level can be configured or not. Scb10-125kva dry-type transformer is suitable for high-rise buildings, commercial centers, airports, tunnels, chemical plants, nuclear power plants, ships and other important or special environmental places.

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 Scb10-125kva dry type transformer

Features of scb12-1250 dry type transformer

It is safe, fireproof and pollution-free, and can be operated directly in the load center.

High mechanical strength, strong short circuit resistance, small partial discharge, good thermal stability, high reliability and long service life.

Low loss, low noise, energy saving effect is obvious, maintenance free.

It has good heat dissipation performance and strong overload capacity. When forced air cooling, it can improve the capacity operation.

Good moisture-proof performance, suitable for operation in high humidity and other harsh environment.

Perfect temperature monitoring and protection system. The intelligent signal temperature control system can automatically monitor and display the working temperature of the three-phase winding, start and stop the fan automatically, and set alarm and trip functions.

Small size, light weight, less space occupied and low installation cost.

3. Process characteristics of scb10-125kva dry type transformer

The iron core is made of 30p105 and 120 high-quality cold-rolled silicon steel sheets of Shanghai Baosteel. The 45 degree step full oblique joint structure is adopted. The technology of three shear two punch core angular shearing and five step step step cutting and iron stacking technology are used to improve the magnetic flux distribution at the joint and reduce the vibration energy of the iron core. The core is solidified and sealed with insulating resin on the surface, which effectively reduces the no-load loss, no-load flow and core noise.

The high-voltage coil is wound with high-quality F-class insulation wire, and the large capacity coil is equipped with heat dissipation air duct along the axial direction. The structure has good resistance to current impact, temperature change, cracking and excellent heat dissipation performance. The multi-stage segmented cylinder structure has strong ability to withstand overvoltage and low partial discharge level. The coil is poured after vacuum drying, and the whole casting and curing process is completed according to the pre programmed process curve. The precise process control ensures that the coil is free of air holes and holes.

The foil structure is adopted in the low-voltage coil, which effectively solves the problem of ampere turn imbalance of low-voltage and high-current coils. At the same time, there are no axial turns and axial winding helix angle in the foil coil, which effectively eliminates the axial force of the transformer during short-circuit, and ensures that the current density in the coil can be freely adjusted along the axial direction according to the load distribution of the high-voltage coil The radial force of low voltage sudden short circuit is reduced. After winding, the end of the coil is sealed with resin to avoid the entry of various foreign matters and moisture.

4. Reference standard of scb10-125kva dry type transformer

GB / t10228-2008 technical parameters and requirements for dry type power transformers

Gb6450-1986 dry type power transformers

Iec726 dry type power transformer (IEC standard)

Power transformers (GB 1094-2007)

5. Technical specifications

Capacity range: 80-2500kva

Voltage level: 10KV

Voltage regulation mode: ± 2 × 2.5% or ± 5%

Frequency: 50 Hz

Phase number: 3-phase or single-phase

Connection group label: y, YNO or D, yn11

Impedance voltage: see technical parameter table for standard impedance voltage

Service conditions: the ambient temperature is not higher than 40 ℃, the relative humidity can reach 100%, and the altitude is not more than 1000m. Indoor, the air exchange rate is calculated according to the total loss of transformer, which is not less than 4m3 / km.min

Cooling mode: an or AF

Protection level: IP00 or IP20 (indoor), IP23

Insulation heat resistance grade: the allowable average temperature rise of class H winding is 125k

Temperature limit: 180 ℃

Insulation level:

Rated voltage power frequency withstand voltage lightning impulse withstand voltage

  10KV36KV75KV

Temperature measurement and control device: digital display of the approximate temperature inside the three-phase low-voltage winding to control the cooling fan It can be specially designed according to user's requirements, such as high prototype products, high impedance products, on load voltage regulation products, etc


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