KEB COMBIVERT F6 - Diagrams of the Cooling Design; Pressure Drop Aluminium Extrusion Casting Heat Sink; Figure 12: Pressure Drop of the Heat Sink as a Function of the Volume Flow

5.2 Diagrams of the cooling design
5.2.1 Pressure drop aluminium extrusion casting heat sink
• Thecurvecharacteristicdescribedbelowisvalidfor25°CowtemperatureandAntifrogen
N 52 %.
• Iftherearehigherowtemperatures,thepressuredropinthesystemdecreases.
• This also applies to cooling medium such as water or another glycol mixture.
• A glycol mixture from Clariant in a ratio of 52 % or 33 % is recommended.
Pressure drop in bar
0,0
0,4
0,8
1,2
1,6
2,0
2,4
2,8
3,2
3,6
4,0
4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36
38 40
Volumeowinl/min
Legend
Recommended working range: 10...30 l/min
1 Single Drive
2 Series connection master / slave system
3 Series connection master / slave / slave system
Figure 12: Pressure drop of the heat sink as a function of the volume ow
The selection of the connection diagram (series or parallel connection) of the
cooling circuit depends on the total power dissipation of the drive converter
system.
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OPERATION OF LIQUID-COOLED DEVICES