Datasheet

CP20.241, CP20.241-C1, CP20.241-S1,
CP20.241-S2, CP20.241-V1, CP20.242
CP-Series
24V, 20A, 480W, SINGLE PHASE
Sep. 2018 / Rev. 1.0 DS-CP20.241-EN - All parameters are typical values specified at 230Vac, 50Hz input voltage, 24V, 20A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
24.3. CHARGING OF BATTERIES
The power supply can be used to charge lead-acid or maintenance free batteries. Two 12V SLA or VRLA batteries are
needed in series connection.
Instructions for charging batteries:
a) Use only matched batteries when putting 12V types in series.
b) Ensure that the ambient temperature of the power supply stays below 40°C.
c) Use a 30A or 32A circuit breaker or a blocking diode between the power supply and the battery.
d) Ensure that the output current of the power supply is below the allowed charging current of the battery.
e) The return current to the power supply is typically 3.5mA. This return current can discharge the battery when the
power supply is switched off except in case a blocking diode is utilized.
f) Set the device into “Parallel Use” mode and adjust the output voltage, measured at no load and at the battery
end of the cable, very precisely to the end-of-charge voltage.
End-of-charge voltage 27.8V 27.5V 27.15V 26.8V
Battery temperature 10°C 20°C 30°C 40°C
24.4. SERIES OPERATION
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Devices of the same type can be connected in series for higher output voltages.
It is possible to connect as many units in series as needed, providing the sum of
the output voltage does not exceed 150Vdc. Voltages with a potential above
60Vdc must be installed with a protection against touching.
Avoid return voltage (e.g. from a decelerating motor or battery) which is
applied to the output terminals.
Keep an installation clearance of 15mm (left / right) between two power
supplies and avoid installing the power supplies on top of each other. Do not
use power supplies in series in mounting orientations other than the standard mounting orientation.
Unit A
Input
Output
Unit B
-
+
-
+
Load
+
-
Input
Output
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple devices.