Structure features
SFs is the high voltage apparatus used in the most excellent arcing and insulating medium .SF's gas insulated current transformer is SF6 gas with for the Lord of the current transformer insulation medium, excellent electrical properties.
The upper and lower ends of silicon rubber insulated of external insulation structure are cast flange.
Developing 500kV SFe-type current transformer successfully fills in the gap of this type product in our company as well as in the Northeast Region of China.
The company independent research and development of the LVQBT-500 W3 SF6 gas insulated current transformer, its technology has reached the leading domestic level.

Main technical advantages
♦The inverted structure of SR- insulated current transformer cab make best relative position of primary and
secondary winding, Secondary winding is in the tours, and primary winding runs through the tours center; so there
will be a low leakage reactance, and it is the transformer with a low leakage reactance
♦SF6 is used as insulation with good insulation property and stable chemistry property and without the danger of
fire and explosion.
♦There are no dielectric loss and insulation ageing phenomenon.
♦Primary conductor is short to easily meet the requirements of high dynamic and short steady thermal current.
♦The company adopts composite insulator with good wet Flash-over and stable mechanics property and without
break, and the tube has reliable explosion prevention property
♦The composite insulator has good uvioresistant property and aging resistance which can ensure the reliability of
long-term operation.
•The product has the advantages of light gross weight and short production period, thus, the stability of the
product is improved.
♦Secondary terminal of anti-rotating is used. and the terminal box is castled from Aluminum and has the features
of dust prevention, water prevention, elaboration, practicality and good appearance .
♦The product has the advantages of perfect seal structure and technology and is installed with density pressure
meter for automatically monitoring SR gas pressure.
•The design and manufacture technology has been improved, the product completely meet IEC standard
national standards. electricity standards and rules and the requirements of high reliability, without oil, without
maintaining and miniaturization development of the operation department for deducing failure rate .