WITHSTAND VOLTAGE TEST METHOD OF GAS-INSULATED SWITCHGEAR, AND TRANSFORMER FOR GAS-INSULATED INSTRUMENT

摘要

PROBLEM TO BE SOLVED: To provide a withstand voltage test method of a gas-insulated switchgear which allows for simple withstand voltage test without requiring a testing transformer.SOLUTION: Withstand voltage test of a GIS is performed by performing reverse transformation from secondary to primary by means of a gas VT 12. In other words, the gas VT 12 is configured to perform reverse transformation from secondary to primary, and to generate a test voltage for its main path 14. Consequently, field withstand voltage test of a gas-insulated switchgear can be performed simply.