Coolant; Definition Of Cooling Water - Siemens simovert masterdrives Betriebsanleitung

04.2008
13.1.3

Coolant

13.1.3.1

Definition of cooling water

NOTICE
WARNING
Siemens AG 6SE7087-6KD60
SIMOVERT MASTERDRIVES
Normal service water with corrosion protection (see section "Corrosion
protection agent") or a water/antifreeze mixture (see section "Antifreeze
additive") can be used as a coolant.
The cooling water must meet the following requirements in the long
term:
Max. grain size of any entrained particles
pH value
Chloride
Sulfate
Dissolved substances
Total hardness
Conductivity (water only, also see Section
"Antifreeze additive")
Cooling water inlet temperature
Cooling water temperature rise per unit (rated
operation)
Operating pressure
Alternatively, use deionized water ("battery water" in accordance with
DIN 43530, Part 4).
Operating pressures higher than 1 bar are not permissible!
If the system is operating at a higher pressure, the supply pressure
must be reduced to 1 bar at each unit.
The heat sink material is not seawater-proof, i.e. it must not be cooled
directly with seawater!
Filters (sieves) with a mesh size of < 100 µm are to be fitted in the unit
water
systems (see Section "Notes regarding installation and components")!
If there is a risk of freezing, appropriate counter-measures should be
taken for operation, storage and transport, e.g. draining and blowing out
with air, extra heaters, etc.
The warning notes for "standard units" apply.
Installation and servicing work on the water systems must always be
performed with the electric power disconnected.
Operating Instructions
Technical Data
≤
0.1 mm
6.0 to 8.0
< 40 ppm
< 50 ppm
< 340 ppm
< 170 ppm
< 500 µS/cm
+ 5 ... 38 °C
∆ ≈
T 5 °C
1 bar
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