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Brand:
Category:Electrical
Subcategory:Transformer
• Voltage ratio. Polarity and phase relationship test on each tapping
• Resistance of all windings
• No-load current and no-load losses measurement
• Load losses measurement at rated current and frequency
• Impedance voltage measurement
• Induced over-voltage and separate source voltage withstand tests
• Impulse voltage withstand test.
• Noise level test
• Oil leakage test
• Overload test at 150% rated current for one hour after temperature rise test and hot resistance measurement of (HV – LV)
• Voltage ratio. Polarity and phase relationship test on each tapping
• Resistance of all windings
• No-load current and no-load losses measurement
• Load losses measurement at rated current and frequency
• Impedance voltage measurement
• Induced over-voltage and separate source voltage withstand tests
• Impulse voltage withstand test.
• Noise level test
• Oil leakage test
• Overload test at 150% rated current for one hour after temperature rise test and hot resistance measurement of (HV – LV)
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