Coolant Requirements; Coolant Properties - Siemens Sinamics S120 Manual

13.2

Coolant requirements

13.2.1

Coolant properties

Properties of the cooling medium
Water or a water/anti-freeze mixture that meets the relevant requirements can be used as a
cooling medium. The cooling medium must be chemically neutral, clean, and not contain any
solids.
The cooling water must fulfill the following requirements over the long term:
Table 13- 2 Cooling water specifications
Properties
Max. inlet temperature (in operation)
Max. coolant temperature
Operating pressure
System pressure (with respect to the atmosphere)
Test pressure (with respect to the atmosphere)
Minimum differential pressure p1
Nominal differential pressure p
Maximum differential pressure p2
Flow rate
Max. size of any particles in the coolant
pH value
Chloride
Sulfate
Nitrate
Dissolved solids
Total hardness
Electrical conductivity
NOTICE
Damage to the component through condensation
Condensation on the components can result in their failure.
• Appropriately control the cooling water temperature.
Booksize Power Units
Manual, (GH2), 04/2014, 6SL3097-4AC00-0BP6
n
Liquid Cooled
° C
° C
kPa
kPa
kPa
kPa
kPa
kPa
l/min
mm
ppm
ppm
ppm
ppm
ppm
µS/cm
Cooling circuit and coolant properties
13.2 Coolant requirements
Chemically neutral, clean,
free of solids
45 (55 with derating)
55
100 ... 600
600
1200
70
100
200
5 ... 8
0,1
6,5 ... 9
< 200
< 240
< 50
< 340
< 170
< 2000
803