Transformer quality appraisal

Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are primary coil, secondary coil and iron core (magnetic core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc.

transformers are widely used in power systems, power transmission, industrial fields and homes. For example, transformers play a very important role in the power transmission process. In transmission lines, transformers are needed to convert high-voltage power into usable low-voltage power, thereby ensuring long-distance transmission and efficient utilization of energy.

Zhongke Testing provides transformer quality appraisal services.

Transformer quality identification can be analyzed from the following aspects:
1. Design and manufacturing: The transformer should comply with relevant design and manufacturing standards, such as IEC (International Electrotechnical Commission) standards, GB (National Standards), etc., to ensure that its mechanical and electrical properties meet the requirements.
2. Material quality: Transformer materials should comply with national or industry standards, such as core materials, insulation materials, etc., to ensure their corrosion resistance, heat resistance, insulation performance and other properties.
3. Coil manufacturing: Transformer coils should have good insulation and voltage resistance to ensure their stability in high-voltage and high-temperature environments.
4. Electrical connections between coils: The electrical connections inside the transformer should be strong and reliable and comply with the design requirements to ensure the performance and safety of the transformer.
transformer quality appraisal requires comprehensive consideration of all factors, and in practical applications it requires customized analysis based on specific circumstances.

GB/T 10228-2023 Technical parameters and requirements of dry-type power transformers
GB/T 10241-2020 General technical conditions for resolvers
GB/T 10404-2017 General technical conditions for multi-pole and dual-channel resolvers
GB/T 1094.1-2013 Power transformers Part 1: General provisions
GB/T 1094.11-2022 Power transformers Part 11: Dry-type transformers
GB/T 1094.12-2013 Power Transformers Part 12: Loading Guidelines for Dry-type Power Transformers
GB/T 1094.14-2022 Power transformers Part 14: Liquid-immersed power transformers using high-temperature insulating materials
GB/T 1094.15-2020 Power transformers Part 15: Inflatable power transformers
GB/T 1094.16-2013 Power transformers Part 16: Transformers for wind power generation
GB/T 1094.18-2016 Power transformer Part 18: Frequency response measurement
0 GB/T 1094.2-2013 Power transformers Part 2: Temperature rise of liquid-immersed transformers
1 GB/T 1094.4-2005 Power Transformers Part 4: Guidelines for Lightning Impulse and Operational Impact Tests of Power Transformers and Reactors
2 GB/T 1094.5-2008 Power transformers Part 5: Ability to withstand short circuit
3 GB/T 1094.6-2011 Power transformer Part 6: Reactor
4 GB/T 1094.7-2008 Power Transformers Part 7: Loading Guidelines for Oil-immersed Power Transformers
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