Series Connection For Increased Voltage - Siemens SITOP Series Operating Instructions Manual
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9.3 Series connection for increased voltage
9.3
Series connection for increased voltage
To achieve an output voltage of 48 V DC, two 24 V SITOP PSU8200 power supplies of the
same type can be connected in series. In this case, connect the "-" terminal of the first power
supply to the "+" terminal of the second power supply. The "+" terminal of the first power
supply and the "-" terminal of the second power supply are routed to the load.
Depending on the grounding point of the secondary output voltages, voltages of +48 V,
±24 V or -48 V can be realized.
In the case of an asymmetric load distribution, it is not possible to guarantee correct
functionality.
SELV is not guaranteed in the case of a fault
When connecting two power supplies in series, the continuous, permissible SELV voltage
of a maximum of 60 VDC according to EN 60950 cannot be guaranteed in the case of a
fault.
Figure 9-3
50
WARNING
Series connection
Operating Instructions, 06.2014, C98130-A7633-A1-2-7629
SITOP PSU8200 1ph
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