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SITOP PSU400M
Manual, 05.2018, C98130-A7601-A1-5-7629
47
Applications
9
9.1
Parallel connection to increase the power rating
To increase the power rating, power supplies of the same type can be directly connected in
parallel.
The following must be observed:
●
The cables connected to each power supply at terminals "+" and "-" must have identical
lengths and the same cable cross-sections (or the same impedance) up to a common
external connection point (terminal strip) if possible.
●
The power supplies connected in parallel must be switched on simultaneously with a
common switch in the line feeder cable (e.g. with the main switch available in control
cabinets).
●
The output voltages measured in no-load operation for the power supplies that are not yet
connected in parallel should not deviate more than a maximum of 50 mV. This usually
corresponds to the factory setting. If the output voltage is changed, you should connect
the "-" terminals and then, in no-load operation, measure the voltage difference between
the "+" terminals that have not yet been connected. The voltage difference should not
exceed 50 mV.
Figure 9-1
Parallel connection
Summary of Contents for SITOP PSU400M
Page 8: ...Safety instructions SITOP PSU400M 8 Manual 05 2018 C98130 A7601 A1 5 7629 ...
Page 44: ...Safety approvals EMC 7 4 EMC SITOP PSU400M 44 Manual 05 2018 C98130 A7601 A1 5 7629 ...
Page 46: ...Ambient conditions SITOP PSU400M 46 Manual 05 2018 C98130 A7601 A1 5 7629 ...
Page 56: ...Environment SITOP PSU400M 56 Manual 05 2018 C98130 A7601 A1 5 7629 ...