Oil-immersed Three - Dimensional Manifold Distribution Transformer

S13-m.r series oil-immersed three-dimensional coil core distribution transformer adopts three-dimensional coil core structure, three core columns are arranged in an equilateral triangle, and three phase magnetic circuit balance, which breaks through the structure and process defects of traditional planar stacked core, and has more significant technical performance. The product performance is good, the structure is more reasonable, the loss is low, the short circuit resistance ability is strong, the noise is low, the performance is stable and reliable, the application prospect is broad.

Compared with S11 series transformers, S13 series transformers have an average no-load loss reduction of 28.4%, an average no-load current reduction of 70%, and an average noise reduction of 7 ~ 10dB. Its social benefit and economic benefit are very considerable.

According to the current international GB/ t6451-1999 "technical parameters and requirements for three-phase oil-immersed power transformers" capacity of 30-1600kva, s13-m.l series no-load loss decreases by 50% on average, and load loss decreases by 30% on average; S11-m.l series no-load loss decreased by an average of 30% load loss decreased by an average of 25%.

Low no-load current

Because the coil core material is good and winding processing characteristics, the no-load current significantly reduced. According to the current GB/ t6451-1999, s13-m.r series no-load current decreased by 75% on average; The s11-m.r series no-load current decreased by an average of 75%.

According to JB/ t10088-1999 noise standard, s13-m.r and s11-m.r series noise are reduced by about 7-9db.

The transformer body as a whole is in the shape of three-dimensional triangular prism, with the pull screw arranged around and in the center, which is integrated with the upper and lower iron yoke insulation and laminated wood block to effectively resist the axial and radial mechanical stress in the case of sudden short circuit.

Adopt material performance not less than 30ZH110 cold rolled silicon steel sheet; Three - phase three - column three-dimensional symmetrical structure with the most balanced three - phase magnetic circuit; Each set of (coil) core plate is made of thin steel belt on a special core-winding machine, the pressure is even and compact; The core frame is treated by vacuum annealing to remove stress and improve electromagnetic performance. Core surface coated with epoxy resin paint, moisture-proof, curing.

Low oxygen copper paper wrapped copper flat wire or QQ-2 acetal enameled round copper wire; The low - voltage coil is double - or four-ply round copper or new screw or foil. The high voltage coil is multi-layer cylinder type; The oil channel of the coil is corrugated and the insulation between the layers is double-sided tapered paper. Semi-viscous glass fiber tape of epoxy resin is wound around the surface of both low and high pressure to increase mechanical strength.

1. The product adopts laminated wood instead of the original wooden balance pad, which improves the support balance of the coil and improves the resistance to short circuit.

2. All products add pressure relief valves on the box cover to improve reliability and ease of realization.

3. Structure type of iron core: the iron core adopts the three-dimensional structure of rolled iron core, the section of iron core column is round, and the section of iron yoke is semicircle.

4. Winding structure: both high and low voltage are wire-wound structures. Low-voltage coils are enclosed with weft free glass adhesive tape: high-voltage coils are enclosed with tightening tape.

5. The transformer oil tank adopts the fully sealed corrugated oil tank, realizing the removal of the oil storage tank by the transformer, making the transformer completely isolated from the atmosphere.

6. Improved the process equipment, added the corresponding equipment, to ensure the product quality, improve the work efficiency, the core of the improvement of the tooling, corrugated tank manufacturing to ensure the quality of the product.

This product is suitable for three-phase, 50Hz and 10kV power supply and distribution system, especially for urban distribution network, agricultural network, power and lighting.

S13 series 30kVA ~ 1600kVA three-phase double winding unexcited voltage regulating distribution transformer technical parameters

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