What is altitude effect on RM6 ?

With altitude, the dielectric properties of air are lower, so every bushing (part which use air to insulate) have to be protected using directed field plug-in.

With altitude, ambient pressure decrease, so enclosed pressure increase and deform the enclosure and safety disk.

Moreover, with altitude, usually, temperature decrease lower than guranteed temperature (-25°C)
So we have defined 3 gaps of altitude :
Lower or equal to 1000m nothing to anticipate.
Above 1000m, and up to 3000m, with directed field connections
Third gap : above 3000m we have very few examples of this kind of use. So it's better to consult us for this kind of applying.

Released for:Schneider Electric India