Omron VARISPEED L7

9-7
9
 Altitude Derating
The standard inverter specification is valid for altitudes up to 1000m above sea level. If the inverter is used in
regions with higher altitude, the allowable input voltage, output current and ambient temperature are derated
as shown below.
Table 9.4 Altitude derating
Example
The following example shows the derating of a 400V, 7.5 kW, inverter (L7Z47P5)
Table 9.5 Altitude derating example
Altitude Input Voltage Output Current Max. Ambient Temperature
1000 m or less 100% 100% 100%
1000 to 2000 m 90% of standard spec. 90% of standard spec. 95% of standard spec.
2000 to 3000 m 80% of standard spec. 80% of standard spec. 90% of standard spec.
IMPORTANT
The maximum altitude is 3000m above sea level.
Altitude Input Voltage Output Current Ambient Temperature
1000 m or less 480 VAC or less 18 A or less -10 to 45 °C
1000 to 2000 m 432 VAC or less 16.2 A or less -10 to 43 °C
2000 to 3000 m 384 VAC or less 14.4 A or less -10 to 41 °C