The switch has two different posi-tions: close and open, with an effective locking system that prevents incorrect operations. IM6-PM outdoor switches are contained in stainless steel tanks filled with SF6 gas. Inside the stainless steel tank is placed the 3-phase switch, which can assume 2 positions: closed and open. The rotary motion of the shaft is made by an operating mechanism placed on the front. The stainless steel tank is equipped with a safety valve, which ensures safety in case of failure due to internal overpressure; in addition, a proper manometer assembled inside the operating mechanism and visible from the outside constantly monitors the pressure. The IM6-PM switch is designed be connected on overhead lines and to be installed in the modern telecontrol networks. The IM6-PM switch is maintenance free even in harsh environment conditions.
|Rated power-frequency withstand voltage 50Hz 1min||kV (r.m.s.)||50||70|
|Rated lightning impulse 5withstand voltage||kV (peak)||125||170|
|Rated short-circuit current||kA||20 - 3s|