Test transformers are essential testing equipment for the detection and preventive testing of power equipment. With the development of China's power industry, the voltage level requirements for test transformers are becoming increasingly high, and traditional oil immersed test transformers are increasingly unable to meet the requirements of on-site work in terms of volume, weight, and performance.

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

After years of effort, our company has successfully developed an inflatable lightweight test transformer. Compared with traditional oil immersed lightweight 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 use of new production processes, the technical performance of the products has been greatly improved, making them particularly suitable for on-site work and frequent mobile working conditions

1、 Structure:

1. The design concept, material selection, and process flow of BYQ series products are all brand new, so they are not only small in size, light in weight, and beautiful in appearance, but also meet the technical indicators required by JB3570-98 standards.

The BYQQ series products use high-quality cold-rolled DQ-151 oriented silicon steel sheets stacked into multi-stage cylindrical frame shaped iron cores, which are directly and continuously wound with QZ type wires on a specially designed high-strength insulation cylinder to form high-voltage tower coils. The outer shell is cylindrical and filled with SF6 gas.

2. The difference between BYQ (JZ) products and BYQ products lies in the clever installation of a high-voltage rectifier silicon stack inside a high-voltage sleeve, which can be converted into a power frequency high-voltage AC output or a high-voltage DC output through the insertion and extraction of a short-circuit rod.

BYQ series high-voltage test transformer rated

Note: 1. Parameters of test transformers with a capacity of 50KVA or above are omitted.

1. The no-load current of transformers of various voltage levels is 4-9%, and the impedance voltage is 4-10%

2. Control the existing specifications and operating time of the control part.

 Note: Can be matched according to user requirements

The following is a list of inflatable test transformers