Potential / Voltage transformers Testing and Pre-Commissioning Check Potential /Voltage transformers can be broadly divided in to two type : Indoor and outdoor type. Indoor type – Cast resin. Outdoor type – Live tank, Oil cooled.These can be of electromagnetic of capacitive voltage transformer type (CVT). PT rating are specified as follows – 1) Metering Core- 132 KV /3 : 100v / 3 – nominal ratio 100 VA – Rated burden Class 1.0- Accuracy is 1 %, between 80 % and 120 % of rated voltage and with burdens between 25…
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