Derating due to the installation altitude
Frequency inverters by SEW‑EURODRIVE 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.
No restrictions apply to altitudes < 1000 m.
The following restrictions apply to altitudes ≥ 1000 m:
- From 1000 m to max. 3800 m: IN reduced by 1% per 100 m
