Overview
The HP-ELS series uses vacuum interrupters for arc quenching and eco-friendly gas as the main insulating medium with a small number of solid insulating supports. The main circuit is completely unencapsulated; in normal operation the tank works at zero gauge or slight positive pressure (≤ 0.02 MPa), while phase-to-earth and phase-to-phase insulation meets air-insulation requirements at zero gauge pressure.


