Operating instructions

Vector Control Chassis Type Frequency Converter Technical Data
SIEMENS AG 476 869 4070 76 J AB-74
SIMOVERT MASTERDRIVES Operating Instructions 4-15
4.2 Installation notes
A separate circuit is recommended for the converters of stainless steel
design which dissipates the heat to the system.via a water/water heat
exchanger.
To avoid any electro-chemical corrosion and the transmission of
oscillations, the SIMOVERT MASTERDRIVES units have to be
connected at the infeed and return points with a flexible, electrically
non-conductive hose. The length of the hose should be > 1.5 m.
If the piping of the system is of plastic, this hose is not necessary.
The hose connecting nipples on the heat sink side have to be made of
stainless steel or thick-walled aluminium. The connecting nipples are
not permitted to be made of brass or copper.
The water hoses have to be connected up prior to installation of the
converter (see chapter "Dimension drawings" in the VC Compendium).
If hose clips are used for installation, these must be checked for a tight
fit at 3-monthly intervals.
SIMOVERT
converter
Return
Infeed
e.g. piping
2) Amot valveCooling-water circuit
1)
Mounting cabinet
Wall penetration
Flexible connection
(hose > 1.5m,
electr. non-conduc.)
Fig. 4-2 Cooling-water circuit for SIMOVERT converters