3 phase double winding on-load voltage regulating oil immersed electric power transformer 33kv 35kv

Product Description

3 phase double winding on-load voltage regulating oil immersed electric power transformer 33kv 35kv

Product introduction

Our company research and development production of S11 - M series fully enclosed oil-immersed power transformer has the advantages of low loss, low noise, high efficiency, can obtain good energy saving effect and reduce pollution. Totally enclosed compared with ordinary oil-immersed transformer, cancelled the oil storage tank, the oil volume change by corrugated tank elastic corrugated chips to automatically adjust the compensation, transformer isolated from the rest of the air, to prevent and slow the deterioration of oil and insulation aging, improve operational reliability, running free maintenance.

SH15 series amorphous alloy hermetically-sealed transformer is a new type of environmental protection and energy-saving product. Its core is wound by amorphous alloy, and no-load loss is 75% and above lower than the current S11 distribution transformer. Amorphous alloy is a new type strip material, which has no crystal structure, small magnetization power and high resistivity, so the eddy current loss is small. Application of this material as iron core can produce a new type of energy-saving transformer, which is an ideal product for the renewal of distribution network.

Company introduction

Qingdao HengFengYou Electrical Engineering Co. LTD., aka HFY Electrical Engineering, is a Chinese leading manufacturer and supplier in electricity transmission and distribution industry.
With 30 years of competition and development in China, by now HFY Electrical Engineering has 6 wholly-owned subsidiaries, 50 senior technicians, 350 employees, established sales network and customer service team. From research and development, manufacturing to the final project engineering, HFY provides better solution to clients than others.
Our main market covers medium voltage, high voltage and ultra-high voltage power distribution. In the past few years, we had annual output of 100 million US dollars. The best-seller of our products is oil-immersed transformer series, which are designed with efficiency, energy saving and performance in mind. Our other products are also well known and often seen in projects, such as dry-type transformer series, switchgear cabinet, box-type substation, high-voltage vacuum circuit breaker on columns.

·Service conditions

1. The maximum ambient air temperature shall not exceed 40 ℃, and the minimum shall not below - 25 ℃;

2. The altitude shall not exceed 1000m. If special customized transformers and low-voltage components are used, the altitude can reach 4000m;

3. The vertical inclination is no more than 5°, and no violent vibration and impact;

4. The air humidity is not more than 90% (+ 25 ℃);

5. No gas and conductive dust that will seriously affect the insulation of transformer, no explosion hazard and corrosion of electrical components;

6. Outdoor wind speed shall not exceed 35m / s.

7. If service conditions beyond the above, specially customized product is available.

Structural features

1. The transformer core is made of amorphous alloy cold-rolled silicon steel sheet, which greatly reduces no-load loss and no-load current. The core is bound to ensure the compactness and reduce noise.

2. The coil is rectangular. The high voltage coil is made of acetal enamelled wire, and the low voltage coil is made of oxygen-free copper wire or copper foil coil. These increase the ability of the transformer to withstand short circuit.

3. Dyn11 method is applied to the transformer connection to reduce the influence of harmonics on the power grid and improve the quality of power supply.

4. The transformer adopts vacuum oiling technique, which can completely eliminate the air bubbles in the coil and ensure the stable insulation performance.

5. The external oil conservator is canceled. Traditional oil tube is replaced by a chip radiator as the cooling component. An air cushion is filled on top of the oil tank, which is compressed by the volume expansion of the transformer oil. The transformer oil is isolated from the air to prevent and slow down the deterioration of the oil quality and insulation dampness, and to enhance the operation reliability, and free maintenance in working.