12KV cast resin current transformer CT

Short Description:

LZZBJ9 -10A type indoor medium voltage current transformer is a range of well cast-resin metering and protection combined current transformer, used in 50Hz, rated voltage up to 11kV and below AC power system. The way of wiring can be changed under request of customer.

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Product description
The indoor LZZBJ9-10 current transformer of epoxy resin cast insulated and totally-enclosed structure is intended
for power measurement, current monitoring and relay protection in the line of up to 12 kV and AC 50-60 Hz.
■ It is applicable to air insulated switchgear
■ It conforms to GB 1208, JJG 1021 and IEC 60044-1 standards
Service conditions
■ Installation site: indoor
■ Ambient temperature: -15℃～+40℃, daily average temperature not more than +30℃
■ Altitude: does not exceed 1,000 m
■ Humidity: the average value of the relative humidity measure for a period of 24 h does not exceed 95 percent
■ Contamination severity: class Ⅱ
■ No severe shake or bump in the installation site
■ The ambient air is not signifificantly polluted by dust, smoke, corrosive gases, vapours or salt
Structure overview
■ This current transformer is epoxy resin cast insulated
■ The primary outlet terminal identifification is P1 and P2; the secondary is 1S1, 1S2, 2S1, 2S2 and so on
Technical data
■ Rated voltage 10 kV, max. voltage 12 kV, rated frequency 50/60 Hz
■ Primary to secondary winding and to earth, power-frequency withstand voltage 42 kV/1 min
■ Secondary to secondary winding and to earth, power-frequency withstand voltage 3 kV/1 min
■ Full lighting impulse withstand voltage 75 kV