Cable Site; Derating For High Altitude; Derating For Ambient Temperature - Danfoss VLT 5000 Series Manual

I Cable site
The drawing and table show the mechanical setup
of the cable which can be done before the VLT
frequency converter is installed.
VLT type
VLT 5300-5500/6350-6550/8350-8550
VLT 5300-5500/6350-6550/8350-8550 with RFI
VLT 5300/6350/8350 with RFI/Disconnector
VLT 5350-5500/6400-6550/8350-8550 with RFI/Disconnector
I Derating for high altitude
Below 1000 m altitude no derating is necessary for
VLT 5300-5500, VLT 6350-6550 or VLT 8350-8550.
Above 1000 m the ambient temperature (T
max. output current (I
VLT,MAX
accordance with the diagram below:
1. Derating of output current versus altitude
at T = max. 45
AMB
2. Derating of max. T
100% output current.
MG.56.A2.02 - VLT is a registered Danfoss trademark
) or
AMB
) must be derated in
C
versus altitude at
AMB
®
VLT 5000/6000/8000 Series
I Derating for ambient temperature
The ambient temperature (T
temperature allowed. The average (T
measured over 24 hours must be at least 5ºC lower.
If VLT 5300-5500, VLT 6350-6550 or VLT 8350-8550
is operated at temperatures above 45 ºC, a derating
of the continuous output current is necessary.
Mains terminal
969 mm (38.15 in)
516 mm (20.31 in)
626 mm (24.65 in)
516 mm (20.31 in)
) is the maximum
AMB,MAX
)
AMB,AVG
13