Applications; Parallel Connection To Increase The Power Rating - Siemens SITOP PSU100C 6EP1321-5BA00 Operating Instructions Manual

Applications

9.1

Parallel connection to increase the power rating

To increase the power rating, two identical power supplies SITOP PSU100C, with the
exception of 6EP1331-5BA00 and 6EP1332-5BA20, can be directly connected with one
another galvanically.
The following must be observed:
● The output voltages of the power supplies to be connected in parallel may differ by a
● The cables connected to each power supply at terminals "+" and "-" must have identical
● The power supplies connected in parallel must be switched on simultaneously with a
AC
AC
Figure 9-1
Note
The power-up of two SITOP PSU100C (2 × Ia,rated) power supplies is only permissible with
the basic rated load (Ia, rated).
SITOP PSU100C
Operating Instructions, 06.2013, C98130-A7599-A1-2-7629
maximum of 0.2 % under no load conditions.
When required, the output voltages must be adjusted with the potentiometer.
To do this, the "–" terminals should be connected, and under no-load conditions, the
voltage difference measured between the "+" terminals that have not been connected
together. This voltage difference must not exceed 0.2%.
lengths and the same cable cross-sections (or the same impedance) up to a common
external network junction (terminal strip) if possible.
common switch in the line feeder cable (e.g. with the main switch available in control
cabinets).
SITOP
+
+
-
DC -
SITOP
+
-
DC
Parallel connection
SITOP
+
AC
-
DC
SITOP
+
AC
-
DC
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