Data Sheet

QS20.241, QS20.241-A1, QS20.241-C1
Q-Series
24V, 20A, SINGLE PHASE INPUT
6. OUTPUT
Output voltage nom. 24V
Adjustment range min. 24-28V guaranteed
max. 30V
****)
at clockwise end position of potentiometer
Factory setting typ. 24.1V ±0.2%, at full load, cold unit
Line regulation max. 10mV 60-300Vac
Load regulation max. 100mV static value, 0A Æ 20A
Ripple and noise voltage max. 100mVpp 20Hz to 20MHz, 50Ohm
Output current nom. 20A continuously available at 24V, see Fig. 6-1
nom. 17A continuously available at 28V, see Fig. 6-1
nom. 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. 480W continuously available
nom. 720W
*)
short term available BonusPower
® *)
BonusPower
®
time typ. 4s duration until the output voltage dips, see Fig. 6-2
min. 3.5s
max. 4.5s
BonusPower
®
recovery time typ. 7s overload free time to reset power manager Fig. 6-4
Overload behaviour cont. current output voltage > 20Vdc, see Fig. 6-1
Hiccup
PLUS
mode
**)
output voltage < 20Vdc, see Fig. 6-1
Short-circuit current min. 30A
***)
load impedance 50mOhm, see Fig. 6-3
max. 40A
***)
load impedance 50mOhm, see Fig. 6-3
max. 14A
***)
average (R.M.S.) current, load impedance <10mOhm,
see Fig. 6-3
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.
**) Hiccup
PLUS
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.
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