Product introduction

The product implements national standards GB1094 "Power Transformer", GB6451 "Technical parameters and requirements of three-phase oil-immersed power transformers" and GB20052-2020 "Energy Efficiency Limiting Value and Energy Efficiency Level of Power Transformers". The product is mainly used in power system substation and 35kV user station. The product adopts the current domestic scientific research achievements and has many characteristics such as novel structure, low loss, small volume and strong short-circuit resistance.

Product Features

1, low loss, energy-saving significant.

2、Iron core adopts high quality cold-rolled silicon steel sheet, domestic advanced horizontal shear line, shear burr <0.02, full oblique seam, not punching, not stacked on the iron wheel process; core column stacked good double H sticky glue to make the core three columns two readily become a tight, flat, tight whole, effectively reduce the transformer no-load loss, no-load current and noise.

3、Transformer coil adopts high purity oxygen-free copper, effectively reducing copper consumption, pad block, brace bar chamfering, electric field uniformity, increased reliability. The inner winding support is strengthened to improve its stability and prevent destabilization and deformation. For products with capacity up to 12500kVA or more, the inner and outer coils are assembled with uniform overall pallets and pressure plates to pressurize each coil at the same time to ensure the consistency of each coil height size in the axial direction and improve the transformer's ability to resist sudden short circuit.

4、Plate clamps and side beams form a strong frame structure, the body and oil tank six-sided steel positioning, so that the body can withstand a variety of transport conditions under the impact test without displacement. If the impact of the product during transportation is less than the specified value, it can be tested and put into operation directly without checking by lifting the center, which reduces a lot of work of lifting the center of the product on site.

5、The oil tank is made of whole steel plate and folded into corrugated structure by large press, which reduces the welding seam, increases the mechanical strength, expands the heat dissipation area, improves the heat dissipation effect, and at the same time, the corrugated box avoids the reflection of acoustic plane to reduce the noise. The overall beauty and simplicity of the transformer.

6、The use of capsule type oil storage cabinet, effectively slow down the aging of transformer oil; pointer type oil level meter can avoid the occurrence of false oil level phenomenon and completely solve the transformer oil light aging problem; gas relay with gas collection device, easy to maintain operation; the use of sheet type radiator and large diameter low-noise fan, improve the heat dissipation effect, reduce the noise.

7、For the original traditional sealing structure, especially the place where oil leakage is easy to occur, starting from material procurement control, to ensure that the steel is not rusted, knocked, scratched, hammered, special processing of the sealing part of the tank, and overall spray painting of the box, thoroughly remove the sharp corner burrs, welding slag produced in the processing of the box, and strengthen the adhesion of the paint.

S11, S13, S18, S20, S22 series 35kV double winding non-excitation regulating distribution transformer technical parameters

35kV oil-immersed three-phase double-winding non-excited regulator power transformer energy efficiency class