Materials - Siemens SINAMICS S120 Equipment Manual

Cooling circuit and coolant properties

8.3 Materials

8.3 Materials
The following table lists a wide variety of materials and components which may or may not
be used in a cooling circuit.
Table 8-7 Materials and components of a cooling circuit
Material
Zinc
Brass
Copper
Common steel (e.g. St37)
Cast steel, cast iron
High-alloy steel, Group 1
(V2A)
High-alloy steel, Group 2
(V4A)
ABS Acrylonitrile
Butadiene Styrene
Installation made of
different materials (mixed
installation)
PVC
Hoses
Seals
Hose connections
8-16
Used as Application with SINAMICS S120 Liquid Cooled
Pipes, valves Do not use zinc!
and fittings
Pipes, valves Can be used in closed circuits with inhibitor.
and fittings
Pipes, valves Can be used only in closed circuits with inhibitors in which the heatsink
and fittings and copper component are separated (e.g. connection hose on units).
Pipes Permissible in closed circuits with inhibitors or Antifrogen N, check for
oxide formation, inspection window recommended.
Pipes, motors Closed circuit and use of strainers and flushback filters.
Fe separator for stainless steel cooling circuit.
Pipes, valves Can be used for drinking or tap water with a chloride content up to
and fittings <250 ppm, suitable according to definition in Section 8.2.
Pipes, valves Can be used for drinking or tap water with a chloride content up to
and fittings <500 ppm, suitable according to definition in Section 8.2.
Pipes, valves Suitable according to definition in Section 8.2. Suitable for mixing with
and fittings inhibitor and/or biocide as well as Antifrogen N.
Pipes, valves Do not use a mixed installation.
and fittings
Pipes, valves Do not use PVC!
and fittings,
hoses
Reduce the use of hoses to a minimum (device connection). Must not
be used as the main line for the whole system.
Recommendation: EPDM hoses with an electrical conductivity of >10^9
ohms (e.g. Semperflex FKD supplied by Semperit or DEMITTEL made
of PE/EPDM supplied by Telle)
Pipes, valves Use of Viton, AFM34, EPDM is recommended.
and fittings
Pipe-hose Secure with clips conforming to DIN2817, available, e.g. from Telle.
transition
SINAMICS S120 Equipment Manual, Edition 12/2007, 6SL3097-2AM00-0BP4
Chassis Power Units Liquid Cooled