香港赛马会纪念手表:Ring Main Unit
Gas Insulated RMU
This model of series HXGN-12 is gas insulated RMU. The SF6 gas is injected inside an isolation chamber to seal all live compartments. HXGN-12 is widely applicable in MV distribution networks (12/24 kV) .
Solid Insulated RMU
This model of series HXGN-12 RMU is solid insulated .It is an eco-friendly device, fully insulated and sealed inside a metal-enclosure. This type of RMU is widely applicable in MV distribution networks (12/24 kV) .All live compartments of the RMU are sealed by solid insulation materials through solid insulating bus bar connection mechanism.
Air Insulated RMU
HXHB-12 represents solid insulated series of the RMU . The nitrogen or dry compressed air is used as insulating medium. Meanwhile there is a vacuum interrupter. The protection level of HXHB-12 is IP67, the entire switching device is fully sealed to be isolated from external environment, which ensures a safe and reliable operation.