42 • vacon
INSTALLATION
Tel. +358 (0)201 2121 • Fax +358 (0)201 212 205
5
Glycol/Water ratio
Power loss [kW]
100/0
80/20
60/40
40/60
20/80
0/100
1
4,41 3,94 3,58
3,29
3,06
2,87
2
8,82 7,88 7,15
6,58
6,12
5,74
3
13,23 11,82 10,73
9,87
9,18
8,61
4
17,64 15,75 14,31
13,16
12,24
11,48
5
22,05 19,69 17,88
16,45
15,30
14,35
6
26,46 23,63 21,46
19,74
18,36
17,22
7
30,86 27,57 25,03
23,03
21,42
20,10
8
35,27 31,51 28,61
26,32
24,48
22,97
9
39,68 35,45 32,19
29,61
27,54
25,84
10
44,09 39,38 35,76
32,90
30,60
28,71
Table 5-7.Cooling agent flow rates (l/min) in relation to power loss at certain glycol/water mixture
Note: In order to ensure a sufficient cooling of boards, capacitors and DC-buses, Vacon NX Liquid-
Cooled drives of chassis CH4 are equipped with one additional fan per module. The fan is placed un-
derneath the module and it is supplied externally. See chapter 5.2.3.
