Data Sheet

QS40.241
Q-Series
24V, 40A, SINGLE PHASE INPUT
6. OUTPUT
Output voltage nom. DC 24V
Adjustment range min. 24-28Vdc guaranteed
max. 29Vdc
****)
at clockwise end position of potentiometer
Factory setting typ. 24.1Vdc ±0.2%, at full load, cold unit, in “single use” mode
typ. 24.1Vdc ±0.5%, at full load, cold unit, in “parallel use” mode
typ. 25.1Vdc at no load, cold unit, in “parallel use” mode
Line regulation max. 10mV 85-300Vac
Load regulation max. 50mV in “single use” mode: static value, 0AÆ40A, see Fig. 6-1
typ. 1000mV in “parallel use” mode: static value, 0AÆ40A,
see Fig. 6-2
Ripple and noise voltage max. 100mVpp 20Hz to 20MHz, 50Ohm
Output current nom. 40A continuously available at 24V, see Fig. 6-1 and Fig. 6-2
nom. 34.3A continuously available at 28V, see Fig. 6-1 and Fig. 6-2
nom. 60A short term available BonusPower
®*)
, at 24V
for typical 4s, see Fig. 6-1 and Fig. 6-2
nom. 51.5A short term available BonusPower
®*)
, at 28V
for typical 4s, see Fig. 6-1 and Fig. 6-2
typ. 110A up to 10ms, output voltage stays above 20V, see Fig.
6-4, This peak current is available once every second.
See chapter 25.2 for more peak current measurements.
Output power nom. 960W continuously available at 24-28V
nom. 1440W
*)
short term available BonusPower
®*)
at 24-28V
BonusPower
®
time typ. 4s duration until the output voltage dips, see Fig. 6-5
BonusPower
®
recovery time typ. 7s overload free time to reset power manager, see Fig. 6-6
Overload behavior cont. current output voltage > 20Vdc, see Fig. 6-1
Hiccup
PLUS
mode
**)
output voltage < 20Vdc, see Fig. 6-1
Short-circuit current min. 60A
***)
load impedance 25mOhm, see Fig. 6-3
max. 70A
***)
load impedance 25mOhm, see Fig. 6-3
max. 23A average (R.M.S.) current, load impedance 25mOhm, see
Fig. 6-3
typ. 130A up to 10ms, load impedance <10mOhm, see Fig. 6-4
Output capacitance typ. 10 200μF included in 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 25.1. If the power supply is loaded longer with the BonusPower
®
than shown in the Bonus-time diagram (see
Fig. 6-5), the max. output power is automatically reduced to 960W. If the power requirement is continuously above 960W 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 behavior is called hiccup mode which is described below. If the voltage is above 20V, the unit continuously delivers
current.
**) Hiccup
PLUS
Mode
Up to 4s of overloading, the power supply delivers continuous output current. After this, the output power is reduced to nearly zero
for approx. 17s before a new start attempt is automatically performed. If the overload has been cleared, the device will operate
normally. If the overload still exists, the output current will be delivered for 2 to 4s (depending on the overload) again followed by a
17s rest time. This cycle is repeated as long as the overload exists. See 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. 2014 / Rev. 1.2 DS-QS40.241-EN
All parameters are specified at 24V, 40A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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