Current transformers (CTs) are classified into outdoor and indoor types. Indoor CTs utilize epoxy cast insulation and are extensively used for current measurement, commercial energy metering, and relay protection in alternating - current networks with a nominal voltage of up to 12 kV, 24 kV, or 40.5 kV and a frequency of 50 Hz or 60 Hz.
Operating Conditions
Rated insulation level:40.5/95/185kV
Power factor of load:cOs φ=0.8(1agging)
Rated secondary current:5Aor 10A
Rated frequency:50 or 60Hz
Pollution level:level ll
Altitude:<1000 meter
Produet standard:GB/T20840.1GB/T20840.2.
Main Technical parameter：
