Special transformer

Product introduction

The resin-insulated dry-type power transformer produced by our company adopts the latest technology and production of Germany. The production process is completely based on the German-filled real-injection casting technology, and the new process technology of “plus positive pressure casting” is introduced. Class transformers are excellent products in dry transformers.

With the rapid development of China's economic construction, people's living standards continue to increase, urban and rural electricity load is increasing, dry-type transformers without oil, fire, long life, simple maintenance, safe and reliable are more and more widely used. Resin-insulated dry-type power transformers are mainly used in hotels, high-rise buildings, commercial centers, residential quarters, stadiums, factories, airports, ports, subways, underground mines, etc., especially for limited installation space, urban load centers, etc. The required occasion is more applicable.

Product model preparation method

SC(B)10 series low loss resin insulated dry transformer parameters

The dimensions of this watch are for reference only. The installation and design must be based on the dimensions provided by our contract.

SC10 series 10kV resin insulated dry power transformer parameters

SC(B)10 series 20kV resin insulated dry power transformer parameters

SC(B)10 series 35kV resin insulated dry power transformer parameters

SC10 series 35kV resin insulated dry power transformer parameters

Winding

The high-voltage winding is made of H-class enameled wire. It adopts a multi-stage cylindrical structure to improve the internal structure by electric field analysis and minimize the electric field strength. The interlayer insulation adopts a composite silane glass cloth with strong adsorption capacity, and the epoxy resin is vacuum-casted. The insulation layer has good elasticity, no cracking and high reliability.

The advanced vacuum casting equipment adopts static mixing system to ensure the good fluidity of the mixed resin. The resin can completely penetrate the interlayer, the inter-turn and the inter-segment of the winding during casting, and there will be no air bubbles inside, ensuring locality. The discharge amount is controlled below 5 pC. The epoxy resin adopts the products of international famous brand HUNTSMAN (formerly Ciba-Jiaji) to ensure the quality and life of the coil insulation.

The low-voltage winding adopts a foil-type coil structure, and the air passage is added according to the heat dissipation requirement; the insulation between the winding layers is made of epoxy resin pre-impregnated composite insulating material D279, which has excellent anti-overvoltage shock and short circuit resistance.

Regardless of resin casting or foil coil, due to the optimized structural design, excellent performance materials and mature processing technology, the coil has excellent insulation performance, short circuit resistance and overload capability, and long-term operation is not cracked and maintenance-free.

Core

The core has obvious low noise and low loss. ,

The high-quality silicon steel sheet and low magnetic flux density design effectively reduce the noise, no-load current and no-load loss of the transformer.

In addition, since the frequency of the noise is 100 Hz, in the overall design process of the core, the size of each part is analyzed and optimized, so that the natural vibration frequency of the core avoids the fundamental frequency of the noise and the integer frequency range of the fundamental frequency, effectively reducing the number of decibels of noise. .

The core adopts a full-slant seam structure with seven steps of stepping. This structure can reduce the local overexcitation of the joint portion, which not only reduces the no-load current and no-load loss of the transformer, but also reduces noise. The noise is 10~20dB (A) lower than the national standard.

Magnetic flux density at the joint of Bj-core

Magnetic flux density of Bx-core heart column