Derating For Ambient Temperature - Danfoss VLT 6000 HVAC Manual

Derating for ambient temperature

The ambient temperature (T
temperature allowed. The average (T
over 24 hours must be at least 5ºC lower.
If VLT 6000 HVAC is operated at temperatures above
45 ºC, a derating of the continuous output current is
necessary.
Derating for air pressure
Below 1000 m altitude no derating is necessary.
Above 1000 m the ambient temperature (T
max. output current (I
VLT,MAX
accordance with the diagram below:
160
) is the maximum
AMB,MAX
) measured
AMB,AVG
) or
AMB
) must be derated in
®
VLT 6000 HVAC
1) Derating of output current versus altitude at
T = max. 45°C
AMB
2) Derating of max. T versus altitude at 100%
AMB
output current.
MG.60.B1.02 - VLT is a registered Danfoss trade mark