Oil immersed Voltage Regulating Transformer

Product advantages:

1. Reliability of insulation technology:

From the initial two-dimensional electric field simulation, three-dimensional electric field measurement, and impulse characteristic measurement, to the later theoretical analysis and simulation tests on the characteristics of the transformer's main insulation, longitudinal insulation, end insulation, lead insulation, and coil under lightning impulse voltage, after years and multiple methods of verification, the reliability of transformer insulation has been ensured.

2. Calculation of leakage magnetic field and reduction of stray losses:

We specialize in the calculation and measurement of transformer leakage magnetic field, the shielding structure of leakage magnetic field, the calculation of transformer dynamic and thermal stability, and the improvement of transformer dynamic and thermal stability capabilities, in order to ensure the calculation of leakage inductance field and reduce stray losses, and improve transformer dynamic stability.

3. Accurate analysis of coil temperature field:

Our company has collaborated with universities such as Tsinghua University, Beijing University of Science and Technology, and Huazhong University of Science and Technology to jointly develop a calculation program for the temperature field of the coil. By calculating the loss distribution of the coil (including resistance loss, eddy current loss in different directions, and circulating current loss between parallel wires) and the cooling condition of the flow velocity field, we can accurately calculate the temperature distribution of the coil and the temperature rise of the hot spot, so as to take measures to effectively control the temperature rise of the hot spot that affects the life of the transformer.

4. Reduce the local discharge of transformers:

The electric field strength of each part has been analyzed and strictly controlled during the design phase. The compliance of manufacturing quality, reliability of processing methods, and rationality of operation technology also effectively control the local discharge of transformer alarms.

Execution standards:

1. GB 20052-2020 Energy Efficiency Limits and Grades for Power Transformers
2. GB/T 1094.1-2013 Power Transformers Part 1: General Provisions
3. GB/T 1094.3-2017 Power Transformers Part 3: Insulation Level, Insulation Test, and External Insulation Air Gap
4. GB/T 1094.5-2008 Power Transformers Part 5: Ability to withstand short circuits
5. GB/T 1094.10-2022 Power Transformers Part 10: Determination of Sound Level
6. GB/T 1094.11-2022 Power Transformers Part 11: Dry type Power Transformers
7. GB/T 1094.12-2013 Power Transformers Part 12: Load Guide for Dry type Power Transformers
8. GB/T 10228-2015 Technical Parameters and Requirements for Thousand Type Power Transformers

Advanced production technology ensures the reliability of products:

1. 3D design: Based on more than 30 years of experience in design, manufacturing and experiment in the transformer industry, Shanghai Zhiyou Company has developed a set of pioneering "3D+parameterized" design software, which can realize automatic design and cost optimization, simulation and emulation, fully consider the requirements of national and industrial standards, and ensure the progressiveness of product design.
2. High voltage winding: The high-voltage winding conductor is made of high-quality conductor winding, reinforced with long and short cut glass fiber felt as filler, and poured by the world-class Heinrich vacuum casting system in a vacuum state. Effectively suppress the occurrence of partial discharge phenomenon, with a partial discharge capacity of less than 5pC.
3. Low voltage winding: The low voltage winding adopts high-quality pin conductors and is wound on an automatic box winding machine. The winding machine adopts the technology of "wire hydraulic energy-saving tension curling device", high-precision detection of ± 0.5mm, and advanced hydrogen arc welding technology, which plays a key role in ensuring the quality of coil winding.
4. Iron core: The iron core adopts a multi-stage step through positioning structure, and under various working conditions, the iron core has no lateral or longitudinal displacement.
5. High quality insulation:

The transformer body adopts a high-temperature resistant mixed insulation system, which effectively solves the problem of temperature field differences in different types of transformer structures and ensures the safety and reliability of the insulation system.

6. Advanced winding technology:

Made of high-quality conductor winding and reinforced with long and short cut glass fiber felt, it is poured under vacuum using the world-class Heinrich vacuum casting system

7. Fully automatic core lamination technology:

The robot is fully automatic in laminating, adopting a fully inclined 45 degree 7-step ladder joint structure, which improves the efficiency and quality of transformer laminating.

8. Testing and Inspection Techniques

All products strictly control the production process and quality links, and undergo strict testing and inspection according to national standards and customer customized requirements before leaving the factory, including partial discharge inspection, lightning impact resistance inspection, noise inspection and other necessary inspection items. Advanced testing equipment and a comprehensive inspection and testing system ensure the high quality and excellence of the products.

Ordering Notice:

1. Please provide detailed parameters of the product.
2. Please provide us with as much product related information as possible regarding the product specifications, product drawings, product nameplates, product photos, etc. that you need to order, so that we can provide you with a faster and more accurate quotation.
3. Please provide the product specifications, product drawings, product nameplates, product photos, etc. that you need to order, send email to: shanghaizhiyou@gmail.com We will reply as soon as we receive the email.
4. You can also quickly contact our sales manager Yang through the following contact information: WeChat：+ 86 13122066665 or WhatsApp:+ 86 189 3091 2328.

We are willing to serve you with our professionalism, sincerity, and integrity.