Air Puffer Switch

LKE's Air Puffer switch, the LK-LBS, is a three-phase air puffer load break switch. One each phase, the cylindrical moving contact also act as an air piston during opening.The fixed contact on the incoming terminal includes an arc conductor rod which channels the arcing plasma to the air piston after the main contacts are seperated. The compressed air generated by the moving contact/air piston in the opening motion then blows and deionizes (extinguishes) the arc.

The three phases are mounted on a chasis which also mounts a fault-making earth switch. The LK-LBS also houses HV HRC fuses. A stored energy mechanism on the LK-LBS allows for shunt tripping and fuse triggered tripping. The LK-LBS can be manually operated or motor operated.

Every unit of LK-LBS is built with an interlock mechanism which ensures proper operational sequence between the load break switch, the earth switch and the access to the service cubicle of the panel.

Schematic of LK-LBS

Technical data for the LK-LBS air puffer switch

[ Back to Medium Voltage Products ]

info@lke-electric.com