Protection Engineering Basics and Schemes Protection Engineering | Page 49

Equivalent circuit of CVT:
1.2.5 Protection of Voltage Transformer:
Up to 66Kv no need to put any protection, but above
66Kv High rupturing fuses are placed on Primary side,
which is ok with it.
1.2.6 Test need to be conduct on Voltage
Transformer
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Phase Check
Ratio Test
Insulation Resistance Test
Polarity Check (Same as CT)