36~765kV Gas-insulated Current Transformers

LVQB-Series, SF6 Gas-insulated Current Transformers is applied for metering and protect in 72.5~550kV High-voltage power transmission system.
——The features of the equipment omply with IEC 60044-1
——Modern and compact design，good insulation performance，high mechanical strength
——There are various options on output and accuracy class
——The most modern manufacturing technology on gas-insulation manufacture
——Comply with the quality requirement of ISO9001

Main technical parameters
Highest system voltage: 36~765kV
Rated frequency: 50Hz or 60 Hz
Polarity：Negative
Raetd primary current: 5~5000A
Rated secondary current: 1A or 5A
Accuracy class of the windings for measurement: 0.2S, 0.2, 0.5S, 0.5
Accuracy class of the windings for protect: 5P, 10P, 5PR, 10PR, TPY, TPS, TPX, TPZ
No. of the secondary windings: 1~10
Rated output: 5~60VA
Security factor of the instrument (Fs):5, 10
Accuracy limit coefficient：5，10，15，20，25，30，35，40
Rated output capacitance：5~60VA
Accuracy limit conditions of the PR class:
a. Short circuit time constant of primary windings Tp-100ms
b. Direct Current Amount of short circuit current100%
c. Stipulated operating cycle:C100ms O300~500ms C50~100ms O, The accuracy time of the twice power turn-on is 40ms or 50ms