The test high-voltage device is a new type of AC/DC high-voltage tester produced based on the Ministry of Machinery and Electronics' "Test Transformer" standard, with significant improvements over the original similar products. It is developed from the YD series test transformer, following the national standard "JB∕T 9641-1999", and incorporates enhancements to create a new product. This series features compact size, light weight, robust construction, full functionality, strong versatility, and ease of use. It is particularly suitable for insulation strength testing under power frequency or DC high voltage for various high-voltage electrical equipment, electrical components, and insulating materials in power systems, industrial and mining enterprises, and research institutions. It is an essential and important device in high-voltage testing.

Structure




1. The YDQ series products feature an entirely new design concept, material selection, and manufacturing process. Therefore, they not only have small size, light weight, and attractive appearance, but also all technical indicators meet high international standards.

The YDQ series uses high-quality cold-rolled DQ-151 oriented silicon steel sheets stacked into a multi-stage cylindrical frame-shaped iron core. The high-voltage tower-type coil is directly wound continuously with QZ-type wire on a specially made high-strength insulating cylinder. The shell is of appropriate dimensions and filled with SF6 gas.

2. The difference between YDQ (JZ) products and YDQ products lies in the clever integration of the high-voltage rectifier silicon stack inside the high-voltage bushing. By inserting or extracting the short-circuit rod, the YDQ can be switched between power frequency high-voltage AC output and high-voltage DC output.

3. The difference between YDQ (C) products and YDQ products lies in the internal structure of the bushing and the structure of the high-voltage coil.

4. The YDQW product is based on the ordinary transformer, with improved processes and technology, adopting different insulation structures, and utilizing the arc-extinguishing capability of SF6 gas itself. This ensures that under high voltage, the transformer exhibits essentially no partial discharge. Thus, when using this transformer as a high-voltage power source for partial discharge tests on electrical equipment, combined with a high-precision





 partial discharge detector, it can accurately measure the partial discharge level of the test object without interference.