4 Chapter 1 Safety
EV2000 Series Universal Variable Speed Drive User Manual
systems interfacing with the public supply only at the
medium- or high-voltage level.
Protection against lightning strike
There are transient surge suppressors inside the Drive
which protects it against lighting strike.
Derating due to Altitude
Derating must be considered when the drive is installed
at high altitude, greater than 1000m. This is because the
cooling effect of Drive is deteriorated due to the thin air,
as shown in Fig.1-3 that indicates the relationship
between the elevation and rated current of the Drive.
100%
90%
80%
1000
4000
3000
2000
（m）
Iout
Fig. 1-3 Derating Drive's output current with altitude
1.4 Disposing Unwanted Drive
When disposing the Drive, pay attention to the following
factors:
The capacitors may explode when they are burnt.
Poisonous gas may be generated when the plastic parts
like front covers are burnt.
Disposing method: Please dispose the Drive as
industrial waste.
