11. Measurements and testing of the commissioning of power-transformers (PT)

Type of tests

• Measurement of the ratio transformation by tap changer
• Measurement of the winding resistance
• Measurement of the ratio transformation of the TCS bushings
• Control of contact fingers by tap changer
• Checking of operating of the internal protective
• Control of the low-voltage cabinet and functional tests (Control trimmer, Ventilation ...)
• Insulation measurement of the PTs