14
MECHANICAL INSTALLATION
Powerdrive MD2SL Installation and maintenance
5077 - 2017.12 / b
en
2.3.3 - Liquid cooling
2.3.3.1 - Flow rate
MD2SL rating
180T - 570T
340TH - 600TH
750T - 1100T
750TH - 1200TH
1400T-1700T
1500TH-1800TH
Number of heatsinks
4
8
12
Minimum value
Flow rate (l/min)
24
48
72
Pressure drop (mbars)
330 / 270 (1)
Optimised value
Flow rate (l/min)
32
64
96
Pressure drop (mbars)
480 / 420 (1)
(1) Pressure drop : glycol water / Normal water
Maximum pressure : 3 bars
2.3.3.2 - Coolant thermal regulation
Max coolant temperature: 40°C
To prevent condensation in the
Powerdrive MD2SL
cabinet :
- Respect the coolant temperature indicated in the below table
- Shut down the liquid circulation when the drive is disable during more than 1 minute
Coolant
minimum
temperature
Internal air temperature of the Powerdrive MD2SL cabinet (°C) @1 bar
10°C
15°C
20°C
25°C
30°C
35°C
40°C
45°C
50°C
Relative
Humidity (%)
40%
-2.6
1.5
6.0
10.5
15.0
19.4
23.8
28.2
32.8
50%
0.1
4.7
9.3
13.9
19.0
23.0
27.6
32.1
36.7
60%
2.6
7.3
12.0
16.7
21.0
26.0
30.7
35.4
70%
4.8
9.6
14.4
19.1
24.0
29.0
33.5
38.2
80%
6.7
11.6
16.4
21.3
26.0
31.0
35.9
90%
8.4
13.4
18.3
23.2
28.0
33.0
38.0
Example
: for an air temperature of 40°C and a relative
humidity of 50% inside the
Powerdrive MD2SL
cabinet. the
coolant temperature must not drop below to 27.6°C
To ensure the above coolant temperature. a 3-way controlled
valve or a variable speed pump can be installed.
A regulated heating system should be installed to maintain a
minimum temperature of
5°C
inside the cabinet at drive start
(to be turned off when the drive is running).
T
