QS20.241, QS20.241-A1, QS20.241-C1
Q-Series
24V, 20A, SINGLE PHASE INPUT
6. OUTPUT
Output voltage
nom.
min.
max.
typ.
max.
max.
max.
nom.
nom.
nom.
24V
Adjustment range
24-28V
30V ****)
24.1V
10mV
100mV
100mVpp
20A
guaranteed
at clockwise end position of potentiometer
0.2%, at full load, cold unit
60-300Vac
static value, 0A Æ 20A
20Hz to 20MHz, 50Ohm
Factory setting
Line regulation
Load regulation
Ripple and noise voltage
Output current
continuously available at 24V, see Fig. 6-1
continuously available at 28V, see Fig. 6-1
17A
30A *)
short term available BonusPower® *)
at 24V, for typical 4s, see Fig. 6-1
,
nom.
26A *)
short term available BonusPower® *)
at 28V, for typical 4s, see Fig. 6-1
,
Output power
nom.
nom.
typ.
480W
continuously available
720W *)
short term available BonusPower® *)
BonusPower® time
4s
duration until the output voltage dips, see Fig. 6-2
min.
max.
typ.
3.5s
4.5s
7s
BonusPower® recovery time
Overload behaviour
overload free time to reset power manager Fig. 6-4
output voltage > 20Vdc, see Fig. 6-1
output voltage < 20Vdc, see Fig. 6-1
load impedance 50mOhm, see Fig. 6-3
load impedance 50mOhm, see Fig. 6-3
average (R.M.S.) current, load impedance <10mOhm,
see Fig. 6-3
cont. current
HiccupPLUS mode**)
30A ***)
40A ***)
14A ***)
Short-circuit current
min.
max.
max.
Output capacitance
typ.
8 500μF
included inside the power supply
*)
BonusPower®, short term power capability (up to typ. 4s)
The power supply is designed to support loads with a higher short-term power requirement without damage or shutdown. The short-
term duration is hardware controlled by an output power manager. This BonusPower® is repeatedly available. Detailed information
can be found in chapter 22.1. If the power supply is loaded longer with the BonusPower® than shown in the Bonus-time diagram (see
Fig. 6-2), the max. output power is automatically reduced to 480W. If the power requirement is continuously above 480W and the
voltage falls below approx. 20V (due to the current regulating mode at overload), the unit shuts-off and makes periodical restart
attempts. This behaviour is called hiccup mode, which is described below. If the voltage is above 20V, the unit continuously delivers
current.
**)
HiccupPLUS Mode
At heavy overloads (when output voltage falls below 20V), the power supply delivers continuous output current for 2s. After this, the
output is switched off for approx. 17s before a new start attempt is automatically performed. This cycle is repeated as long as the
overload exists. If the overload has been cleared, the device will operate normally. See also Fig. 6-3.
During the off-period a small rest voltage and rest current is present on the output.
Discharge current of output capacitors is not included.
***)
****) This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not
guaranteed value which can be achieved. The typical value is about 28.5V.
Oct. 2013 / Rev. 2.2 DS-QS20.241-EN
All parameters are specified at 24V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
6/26
www.pulspower.com Phone +49 89 9278 0 Germany
PULS [ PULS GmbH ]
