Danfoss VLT AAF006 User Manual

9.2 Derating for Altitude and Ambient
Temperature
The cooling capability of air is decreased at lower air
pressure.
Below 1000 m altitude no derating is necessary, but above
1000 m the ambient temperature (T
AMB
) or maximum
output current (I
out
) should be derated in accordance with
Illustration 9.1.
An alternative is to lower the ambient temperature at high
altitudes and thereby ensure 100% output current at high
altitudes. As an example of how to read the graph, the
situation at 2000 m is elaborated. At a temperature of 45
°C (T
AMB, MAX
- 3.3 K), 91% of the rated output current is
available. At a temperature of 41.7 °C, 100% of the rated
output current is available.
80
0 500
100
95
90
85
1000 1500 2000 2500 3000
Altitude (meters above sea level)*
130BB008.10
I
OUT
(%)
Illustration 9.1 Altitude Derating
110
100
90
80
70
60
50
40
30
20
10
0
0 5 10 15 20 25 30 35 40 45 50 55
Tamb (Max) Deg C
Iout (%)
130BD937.10
Illustration 9.2 Input/Output vs. Maximum Ambient
Temperature
9.3 Acoustic Noise
AAF190 AAF250, AAF310, and AAF400
DUT idle running (60 Hz) with no load with
fans on
73 66.5
DUT running (60 Hz) with 100% load 78.7 69
Table 9.2 Acoustic Noise
Specifications
Operating Instructions
84 Danfoss A/S © 09/2014 All rights reserved. MG90V302
99

Danfoss VLT AAF006 Specifications

General

Brand	Danfoss
Model	VLT AAF006
Category	Water Filtration Systems
Language	English