Main characteristics of high-voltage test transformer

Testing transformers can be categorized into types such as Oil-Immersed Testing Transformers, Dry-Type Testing Transformers, Gas-Filled Testing Transformers, and AC/DC Testing Transformers.

Dry-type testing transformers are compact, lightweight, and can be inverted. (√)

When the voltage rating of the test object is unknown, a withstand voltage test at 2.5 times the presumed voltage is generally performed.

Standard testing transformers output AC, but AC/DC output models can be customized. The DC output voltage is 1.414 times the AC output voltage (peak value).

What are the characteristics of oil-immersed, dry-type, and gas-filled testing transformers?

Oil-Immersed Testing Transformers: Lower cost, easier maintenance.

Dry-Type Testing Transformers: Compact, lightweight, can be inverted, good insulation performance, good voltage distribution characteristics.

Gas-Filled Testing Transformers: (Note: Specific characteristics were not listed in the original text. Common features like enhanced safety, reduced fire risk, or maintenance-free operation could be added if applicable).