Data Sheet

UC10.241, UC10.242
UC-Series
24V, 15A, CAPACITOR-BASED DC-UPS
4. OUTPUT
The output section of the DC-UPS is fully controlled and is equipped with an electronic current limitation. A current
overloading of the DC-UPS cannot happen, independent of which sizes of power supplies are used on the input of the
DC-UPS.
The current limitation works in a switching mode which reduces the power losses and heat generation to a minimum.
Output in normal mode:
In normal mode (and also in charging mode), the output voltage is slightly lower as the input voltage. The output
voltage follows the input voltage reduced by the input to output voltage drop.
Input to output voltage drop max. 0.3V
0.45V
at 10A output current
at 15A output current, see Fig. 4-1
Ripple & noise voltage max. 30mVpp at 20Hz to 20MHz, 50Ohm measurement. This figure
indicates the ripple & noise voltage which is produced
by the DC-UPS. It can be higher if the supplying source
has a higher ripple and noise voltage.
Output current nom. 15A continuously allowed for the entire voltage range
Output power nom. 360W at 24V
Overload behavior continuous
current
see Fig. 4-2
Current limitation typ.
min.
16A
15A
see Fig. 4-2
Short-circuit current min. 17.9A load impedance 100mOhm, see Fig. 4-2
max. 21.0A load impedance 100mOhm, see Fig. 4-2
Output capacitance typ. 1 500µF included inside the DC-UPS
Capacitive and inductive loads No limitation
Output in buffer mode:
The output voltage is fully regulated in buffer mode.
The unit switches into buffer mode, when the input voltage falls below the transfer threshold input voltage level, The
buffer voltage is slightly lower than this threshold input voltage. The unit switches back to normal mode, as soon as
the input voltage exceeds the transfer threshold voltage, which is specified in the input section.
Output voltage typ. 22.45V
±1%
22.25V
±1%
22.12V
±1%
at no load
at 10A buffer current
at 15A buffer current
Ripple & noise voltage max. 30mVpp at 20Hz to 20MHz, 50Ohm measurement
Output current nom. 15A continuously allowed
Output power nom. 360W at 24V
Overload behavior continuous current see Fig. 4-2
Current limitation typ.
min.
16A
15A
see Fig. 4-2
Short-circuit current min. 17.9A load impedance 70mOhm, see Fig. 4-2
max. 21.0A load impedance 50mOhm, see Fig. 4-2
Capacitive and inductive loads No limitation
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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