110 Kv 20kv Three-Phase on-Load Voltage Regulating Transformer

• Customization: Available
• Application: Power, Electronic
• Phase: Three
• Model NO.: 110kV three-phase transformer
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001
• Usage: Power Transformer, Distribution Transformer
• Frequency Characteristics: High Frequency
• Shape of Core: Ring
• Transport Package: Material Flow
• Specification: Three-phase transformer
• Production Capacity: 50000pieces/Year

Product Description

Product Description

The 110kV three-phase oil-immersed power transformer has adopted a series of major reforms in materials, processes and structures. It is light in weight and small in size, and can reduce a large amount of power grid losses and operating costs with significant economic benefits. It is suitable for power plants, substations, large factories and mines, petrochemical enterprises, etc. This product complies with the national standards GB1094.1-1996 "Power Transformer Part 1 General Principles" GB1094.2-1996 "Power Transformer Part 2 Temperature Rise", GB1094.3-1996 "Power Transformer Part 3 Insulation Level Insulation Test External Insulation Air Gap", GB1094.5-1996 "Power Transformer Part 5 Ability to Withstand Short Circuit", GB/T6451-2015 "Technical Parameters and Requirements for Three-Phase Oil-Immersed Power Transformers", GB20052-2020 "Energy Efficiency Limit Values and Energy Efficiency Grades for Power Transformers"

Product Specification	Details
Product Rating	6300kVA - 63000kVA
Product Model	SZ22 - 110/10.5 Three - phase Three - winding Non - excitation Voltage Regulation
Energy Efficiency Grade	Grade 1 Energy Efficiency
Voltage Rating	110/10.5kV
Core Material	Silicon Steel Sheet

Product structure:

The iron core is made of high-quality cold-rolled grain oriented silicon steel sheet, which is fully inclined and non porous. The low magnetic steel plate is used as the pull plate to firmly connect the upper and lower clamps with the iron core into a steel structure, so as to obtain small no-load loss and low noise.
According to the size of the transformer capacity, the winding adopts cylinder type, spiral type, continuous type and other structures. For the 110kV and above voltage level winding, the winding adopts the tangled or inner screen type structure, which effectively improves the impulse voltage distribution. The conductor adopts transposed conductor or composite conductor to reduce the additional loss of the winding. The computer simulation is used to calculate the electric field and the impact characteristics of the winding, The excellent electrical characteristics and impact strength of the winding are ensured, and effective measures are taken to ensure its safe and reliable operation.
The pressing structure of the transformer body adopts a round insulation pressing plate. The whole winding assembly is adopted for the package process, which improves the reliability of the product.
The oil tank adopts a flat top bell jar structure, and the tank wall is welded with a folded plate type reinforcing iron, which improves the mechanical strength of the oil tank. In order to reduce the stray loss of the transformer, large transformers are equipped with magnetic shielding on the inner wall of

 the oil tank.

In order to prevent displacement of transformer body during transportation, positioning device is set on the oil tank of transformer body. The sealed oil conservator is used to isolate the transformer oil from the atmosphere to avoid oil moisture and aging. The end is equipped with a pointer type oil level gauge. According to the oil weight of the transformer, a pressure relief valve is installed on the top of the oil tank to ensure the safe operation of the product.
Product advantages:
Low loss: the no-load loss is about 40% lower than the current national standard GB6451-1999, and the load loss is 15% lower than the current national standard GB6451-1999

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