QTD20.241
Q-Series
24V,
20A,
DC
I
NPUT
21.4.
C
HARGING OF
B
ATTERIES
The DC/DC converter can be used to charge lead-acid or maintenance free batteries. (Two 12V batteries in series)
Instructions for charging batteries:
a)
Set 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
b)
Use a 25A circuit breaker (or blocking diode) between the DC/DC converter and the battery.
c)
Ensure that the output current of the DC/DC converter is below the allowed charging current of the battery.
d)
Use only matched batteries when putting 12V types in series.
e)
The return current to the DC/DC converter (battery discharge current) is typ. 16mA when the DC/DC converter is
switched off (except in case a blocking diode is utilized).
Oct. 2016 / Rev. 2.0 DS-QTD20.241-EN
All parameters are specified at 24V, 20A, 600Vdc input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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