33/11Kv 5000Kva Oil Immersed Power Distribution Transformer
The iron core of the oil type transformer is made of high permeability grain oriented cold rolled silicon steel sheet, which is a new type of iron core. The fully inclined seam stacked iron core has a multi-stage stepped circular cross-section. The winding of the oil immersed transformer adopts the corrugated oil channel non immersion paint process, with tight straps for binding. The windings are all concentric coils, and the high-voltage winding has taps corresponding to the tapping voltage requirements, which are led to the tapping switch. The H61 oil-immersed transformer is equipped with a tube holder for a glass thermometer, which is set at the top of the oil tank and extends 120 ± 10mm into the oil.
Description
What is an oil immersed transformer
Through the research and application of new materials and processes, as well as the combination of independent innovation and technology introduction, the oil immersed transformer achieves the goal of reducing no-load losses and noise through the optimization and innovative design of the iron core and coil structure. The average noise level has decreased by 20%, and the product performance level has reached the advanced level in China.
Oil immersed transformers have low losses. Due to the characteristics of small seamless magnetic resistance, consistent magnetic direction between corner magnetic circuit and silicon steel sheet, tight winding and high filling coefficient, and light core weight, the three-dimensional coil iron core oil immersed transformer has advantages. Compared with traditional laminated core oil immersed transformers, it significantly reduces no-load losses and no-load currents. Significant energy-saving effect and economical operation. Meanwhile, low noise: The noise level of the three-dimensional coil core oil immersed transformer is 5-10 decibels lower than that of the stacked core oil immersed transformer. It is an ideal mute product.
High mechanical strength: The three-dimensional coil iron core adopts a circular iron core cross-section, which has better short-circuit resistance than a long circular cross-section. And the cushion block has a high coverage rate and good fastening effect, greatly improving the product's short-circuit resistance.
Oil immersed transformers are mainly used in power systems, industrial and mining enterprises for power load requirements and electrical isolation of the power grid. They convert the market electricity into magnetic electricity and serve as isolation equipment for precision measurement and testing systems to purify (anti-interference) power sources and the power grid. Primary single-phase 220V, secondary also single-phase 220V. Or primary three-phase 380V, secondary also three-phase 380V. Firstly, we usually use an AC power supply voltage where one wire is connected to the ground and the other wire has a potential difference of 220V from the ground. Human contact can cause electric shock. The secondary of the isolated three-phase oil-immersed transformer is not connected to the ground, and there is no potential difference between any two of its wires and the ground. It is safer for people to come into contact with any wire without causing an electric shock. Secondly, the output end and input end of the three-phase oil-immersed transformer are completely "open circuit" isolated, which effectively filters the input end of the three-phase oil-immersed transformer (power supply voltage supplied by the grid). Thus providing pure power supply voltage for electrical equipment
How to choose oil-immersed transformers
The larger the model number of a power transformer, the better it will be in terms of energy conservation, performance of the transformer itself, and optimized design. Its operation is more stable and installation is more in line with today's environmental protection concept. At the same time, it will also relatively increase its value in terms of price. When purchasing transformers, we must make decisions based on our own situation and provide specific models to the manufacturer to customize the oil immersed transformers we truly need. If you are not particularly certain, you can communicate with the transformer manufacturer for better procurement.
PRODUCT PHOTO DETAILES
This product is usually customized.
We are a manufacturer and have a professional technical department that can design and provide solutions according to customer needs.
Please contact our sales personnel to obtain design drawings
Here are our customer examples for your reference
Brazilian clients
5 pieces
Oil immersed power transformer 3F 75kVA Dyn1 13,8kV
Item Description Oil immersed power transformer ;ABNT NBR 5356-1 ;insulating oil (dielectr.) mineral type A -NBR5356-1 ;ONAN ;three phase ;75.0kVA - natural cooling Dyn1 ;primary angular displacement primary / secondary +30° ;thermal class (NBR IEC 60085) 105 ;60Hz ;nominal voltage of primary: 13,8kV ;tapping on primary: + 1 x 4,4%, - 3 x 4,4% ;nominal secondary voltage: 480 / 277V ;primary insulation level
maximum voltage 15kV (effective) ;secondary insulation level maximum voltage 1.2kV (effective) ;primary withstand voltage
Primary withstand voltage (full) atmospheric impulse 110kV (rms) ;withstand voltage sec (full) atmospheric impulse 30kV
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