Power reduction due to the installation altitude

SEW‑EURODRIVE frequency inverters are designed for overvoltage category III and for altitudes up to 2000 m according to EN 61800-5-1. The air pressure and the air density decrease depending on the installation altitude. This leads to a reduced cooling capacity and to a reduced electrical isolation effect of the air.

Installation altitude	Limitations
Up to 1000 m	None
1001 to 3800 m	Reduction of the nominal output current I_N by 1% per 100 m.
Additionally: 2000 to 3800 m	To maintain protective separation and the air gaps and creepage distances according to EN 61800‑5‑1, you have to connect an overvoltage protection device in order to reduce the overvoltages from category III to category II.

Installation altitude

Limitations

Up to 1000 m

None

1001 to 3800 m

Reduction of the nominal output current I_N by 1% per 100 m.

Additionally:

2000 to 3800 m

To maintain protective separation and the air gaps and creepage distances according to EN 61800‑5‑1, you have to connect an overvoltage protection device in order to reduce the overvoltages from category III to category II.

MOVIDRIVE® modular