China Factory 12KV 24KV 36KV 40.5KV 3 Phase SFS SF6 Load Break Switch Pole Mounted LBS Silicone Rubber Outdoor High Voltage LBS

Service environment:

Air temperature: Maximum temperature: +85℃; Minimum temperature:-45℃

Humidity: Monthly average humidity 95%; Daily average humidity 90%.

Altitude above sea level: Maximum installation altitude: 2500m or more higher.

Ambient air not apparently polluted by corrosive and flammable gas, vapor etc. No frequent violent shake.

Structural:

Tank case material is stainless steel: tank case is designed for its maximum robustness so that at a maximum bursting pressure of the tank,switching operaion is not disturbed. Moreover, its minimum welding line of stainless steel tank case results in minimum corrosion.

The insulation of load break switch is SF6 gas,meets the requirement of IEC60376 latest application. To maintain the insulating capacity of SF6 gas during the service life of switch, a moisture and de-composed gas obsorber contain in the tank.

The enclosure is sealed for life and meets "Pressurized sealed system" criteria in conformity with the standard IEC62271-1.

SF6 load break switch is fitted with safety bursting mumbrane located in the safest part of the tank.  It will avoid any damage to the operator in case of an overpressure (internal arc). opening the membrane before the tank  or bushing are destroyed.

A low pressure gauge is provided at the bottom of tank which can be visible /readable by operator along with the low pressure lockout mechanism, which interlocks/ prevents the electrical and mechanical operation if the gas pressure is low.

The polymer insulators are made of HTV (High Temperature Vulcanization) silicone rubber polymer having excellent hydrophobic properties so as to  meet the electrical and mechanical characteristics of international standards IEC61109,60383 & 62271 (Latest edition). The insulators is grey color and free from cracks and any other visible coating defects.