LVQB-220 standalone current transformer insulation in SF6 gas was widely usde by  State Grid Corporation of China.

The standalone current transformer is for the current measuring and protection for the power systems.

Rated voltage: 40.5kV~550 kV

Rated primary current: 50~8000A

Rated secondary current: 1A, 2A, 5A

Rated frequency: 50Hz or 60Hz

Maximum output: 200VA(GB, IEC AS standards), or B-1.8, C800 (IEEE standard)

The accuracy classes: 0.2S, 0.2, 0.5S, 0.5, 5P, 10P, PX, PR, TPY, TPZ (GB, IEC AS standards),

or 0.15, 0.3, C (IEEE standard)

The bushing is made by silicon rubber or porcelain.

The enclosure is made by aluminum alloy casted, there is SF6 density monitor to monitor the

gas pressure, and with a pressure relief device, the produce is very safe. The insulation material

is SF6 gas, the leakage not exceed 0.1%/year. The partial discharge less than 5 PC.

The product service life is very long , more than 30 years even get to 40 years and do not need

any special maintenance. Our technology has reached the international leading level.