Oil-Immersed Power Transformer

• Customization: Available
• Application: Power, Electronic
• Phase: Three
• Model NO.: S20-M-30~2500kVA
• Core: Silicon Steel Sheet Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000
• Usage: Power Transformer
• Frequency Characteristics: Low Frequency
• Shape of Core: E
• Brand: Domain
• Transport Package: Iron Case/Wooden Case
• Specification: customizable
• Trademark: DOMAIN
• Origin: Nanjing, China
• HS Code: 85043300
• Production Capacity: 2600 Units/Year

Product Description

Company Profile
Asean Electric Group Nanjing Co., Ltd. is located in Lishui Economic Development Zone, the first provincial development zone in Jiangsu Province. It is a modern science and technology enterprise integrating production, logistics, sales, office and life and entertainment. The company covers a total area of 216 mu, mainly research and development and production of transmission and distribution products as well as wind energy, solar energy and other new energy products.
The company is a national high-tech enterprise, a national torch plan project and a national spark plan project implementation unit, and its comprehensive strength ranks among China's top 500 machinery, China's top 20 high and low voltage electrical appliances, and China's top 10 well-known substation brands. It has successively obtained several invention patents and 25 utility model patents such as intelligent adjustable solar cell device and wind power output voltage automatic regulation system.
The company has passed the quality management, environmental management, occupational health and safety management system certification; The company's products are compulsory product certification by China Quality Certification Center, and the People's Insurance Company of China undertakes quality liability insurance; And obtained the national "two network" transformation recommended preferred products.
Taking the harmonious development of ecological environment and humanistic care as the premise, ASEAN will continue to carry forward the enterprise spirit of seeking truth and pragmatism, keeping promises of integrity, scientific and technological innovation, harmonious and win-win, and take scientific and technological innovation as the leading role, vigorously promote the sustainable, healthy and rapid harmonious development of energy, environment and enterprises, and strive to create green electricity in the world.
Product Features
Low loss, energy-saving, strong overload and short-circuit resistance.
Complies with the latest GB20052 Class I/Class II energy efficiency standards.
Low noise, is better than that of GB and IEC standards.


Roduct standard
B/ T10994.1-2013 "Power transformers - Part 1: General Provisions"
GB/ T10994.2-2013 "Power transformers - Part 2: Temperature rise of liquid-immersed transformers"
GB/ T10944.3-2017 "Power transformers - Part 3: Insulation levels, insulation tests and external insulation air gaps" GB/ T10944.5-2008 "Power transformers - Part 5: Ability to withstand short circuits"
GB/T1094.10-2003 "Power transformers - Part 10: Determination of sound levels"
GB/T6451-2015 "Oil immersed power transformer technical parameters and requirements"
GB/T 7555-2017 "Transformer Oil Quality in Operation"
GB 20052-2020 "Power transformer Energy efficiency Limit Value and energy efficiency Level" JB/T10088-2016 "6kV~1000kV Power transformer sound level"

Transport package

Product advantage
Core structure
The core is made of high quality, low loss, high permeability magnetic cold rolled silicon steel sheet material and stepped multistage joint structure, which is conducive to reducing no-load loss and no-load current; Core tension and clamping with the anti-loose structure, the entire core assembly is balanced tightly, so that the transformer core is not loose due to vibration during transportation and operation, and can have effectively reduce the noise of transformer operation.
Coil structure
The high-voltage coils are multi-layer cylindrical coils, and the low-voltage coils are cylindrical, foil or new spiral coils. Dotting paper is used for insulation between coils. Coil end, using the forming end ring, the oil channel using hard stay curtain, good mechanical strength.
The coil is connected to the high pressure bushing and tap changer with a cold-pressed connector and a copper flexible stranded wire to ensure the connection.
Winding, set, and compression have strict tightening process measures, and the lead has enough support to make the whole body travel tight and have enough short-circuit resistance.
All windings are designed so that the current and temperature are evenly distributed along the windings, and the windings get the best electric field distribution during the full wave and cut wave impact tests.
Tank fabrication
The oil tank is a corrugated rectangular tank. The corrugated sheet is welded automatically. The welds are full, smooth and even, and the thickness is uniform to ensure that the welds do not leak oil. The elasticity of the corrugated sheet can compensate for the change in the volume of the transformer oil caused by the temperature rise and fall. All the fasteners outside the transformer are made of stainless steel material to ensure corrosion prevention and rust prevention. The appearance is sprayed with plastic, long service life and beautiful appearance.
Security maintenance
In terms of pressure protection, a new type of pressure relief valve with pressure plate is selected; In terms of gas protection,800KVA and above are configured with gas relays, other capacities can be increased according to user needs, and signal thermometers can be installed for all specifications of capacity transformers, which can remotely monitor oil temperature.

Performance parameter
Performance parameters of S20-M-30~2500kVA three-phase oil-immersed fully sealed non-exciting voltage regulation distribution transformer

Core structure
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Performance parameters of S22-M-30~2500kVA three-phase oil-immersed fully sealed non-exciting voltage regulation distribution transformer