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
400030002000
(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.