Download NPS2400

4.3.3
Connection in series
Figure 9
Connection of multiple units in series
The series connection allows increasing the total output voltage. Connect the output terminals of each device in series checking
the right polarity.
Note 1: Before any power ON be sure to have connected the antiparallel diodes to all units. The voltage rating of EACH
diode should cover the TOTAL voltage of the SERIES system. A diode as P600J is suitable for most applications.
Note 2: Only SMPS of the same model (same rated output voltage) can be connected in series. Do not exceed > 4
units connected in series and > 200Vdc total voltage. For other situations contact the factory.
Note 3: To achieve the best power sharing between the series connected devices it is recommended to regulate the
output voltage of each device at the same value with a tolerance of maximum 0.1V.
Note 4: When using several devices in series the operating mode must be set to OVERBOOST, using CONSTANT
CURRENT mode can result in instabilities in case of load short circuit. The maximum current setpoint shall be the
same on every connected device.
:
When the units are used in series do not connect anything to the auxiliary connector SENSE+/SENSE- and
SHARE+/SHARE-. Any connection to these signals may damage the units and the connected load.
NPS2400 User’s Manual
Rev. 3.0 – 17.02.2015
Page 11/38