LB11-220(W1)

LB11-220(W1) is a high-performance single-phase oil-immersed current transformer designed for 220kV ultra-high voltage power systems. Complying with IEC and GB international standards, this outdoor current transformer is widely applied in 220kV main substations, backbone power grids and new energy projects for precise current monitoring, energy metering and reliable relay protection.
Adopting mature capacitive graded oil-paper insulation structure and high-purity insulating oil, the LB11-220(W1) features uniform electric field distribution, low dielectric loss and stable heat dissipation performance. Equipped with a high-quality low-loss magnetic core, it maintains accurate current transformation ratio and low measurement error, effectively resisting strong electromagnetic interference in complex UHV grid environments.
Featured with a fully sealed integrated structure and metal expander, this 220kV current transformer thoroughly prevents oil leakage, moisture and dust intrusion. The high-strength anti-fouling porcelain sleeve with multi-layer anti-corrosion treatment supports stable all-weather operation in harsh environments, including high altitude, low temperature and coastal salt fog polluted areas.
Optimized with scientific winding layout and balanced structural design, the LB11-220(W1) has strong overload resistance and low operating noise. It features multiple precision grade options, long service life and low daily maintenance, greatly reducing operational costs for 220kV power grid construction and renovation projects.
As essential core supporting equipment for 220kV ultra-high voltage power engineering, the LB11-220(W1) outdoor oil immersed current transformer delivers excellent measurement precision and operational stability. We provide global customers with factory direct supply, complete certification documents and professional one-stop after-sales service.