Inflatable high-voltage test transformerPrinciple




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YDQ test transformer is essential test equipment for power equipment testing and preventive tests. With the development of China's power industry, the voltage level requirements for test transformers are getting higher and higher, while traditional oil-immersed test transformers are increasingly unable to meet the requirements of field work in terms of volume, weight, and performance.

Chinese name

Inflatable high-voltage test transformer

English name

Inflatable type high-voltage test transformer




Executive standard

DL/848.2-2004

Advantages

Small size, light weight, beautiful appearance



Table of Contents




  1. 1 Equipment introduction

  2. 2 English

  3. 3 Product development




  1. 4 Structure

  2. 5 Technical specifications

  3. ▪ No-load current




  1. ▪ Specifications and operation

  2. ▪ Rated parameters


 

Equipment Introduction




Executive standard: DL/848.2-2004

YDQ gas test transformer (excerpt from Wuhan Ruituopu)

English




Inflatable high-voltage test transformer Inflatable type high-voltage test transformer

Product Development




With the progress of basic scientific research in China and the application of new materials and new processes, the new medium sulfur hexafluoride gas has been pushed into the application field of power equipment. Due to the excellent insulation and arc extinguishing properties of sulfur hexafluoride gas, as well as its non-flammability, it has been widely used as a new insulating medium.

After years of efforts, our company has successfully developed an inflatable light test transformer. Compared with traditional oil-immersed light test transformers, this series of products reduces weight by 20%-60% (depending on voltage and capacity level), and has no oil pollution. The voltage level of a single test transformer can reach 300KV. Due to the adoption of new production processes, the technical performance of the products has been greatly improved, especially suitable for field work and frequent movement conditions.

Structure




1. The design concept, material selection, and process flow of the YDQ series products are all new. Therefore, they not only have small size, light weight, and beautiful appearance, but also all technical indicators meet the requirements of the <> standard. The YDQ series products use high-quality cold-rolled DQ-151 oriented silicon steel sheets stacked into a multi-stage cylindrical frame iron core, and use QZ type wires to directly and continuously wind high-voltage tower coils on a specially made high-strength insulating cylinder. The shell is of appropriate size and filled with SF6





2. The difference between YDQ (JZ) products and YDQ products is that the high-voltage rectifier silicon stack is cleverly installed inside the high-voltage bushing. By inserting and extracting the short-circuit rod, it can be switched between YDQ industrial frequency high-voltage AC output and high-voltage DC output.