The power switch, vacuum box helium leak detection and SF6 filling system

[Feature]

The reliability of the seal joint rapidly, ensuring the connection seal
Workpiece inside and outside differential pressure real-time detection, ensure the security of the workpiece
Real-time monitoring of helium concentration, ensure the leak detection accuracy is not affected by helium concentration change
The door is in an observation window for viewing vacuum box
Suitable for 10 kv and 24 kv power system leak detection and SF6 injectors