Data Sheet

QT20.241, QT20.241-C1
Q-Series
24V, 20A, THREE PHASE INPUT
Apr. 2017 / Rev. 2.1 DS-QT20.241-EN
4. INPUT INRUSH CURRENT
The power supply is equipped with an active inrush current limitation circuit, which limits the input inrush current
after turn-on and after short input voltage interruptions to a very low value.
3AC 400V 3AC 480V
Inrush current
*)
max. 10A
peak
10A
peak
Over entire temperature range
typ. 3A
peak
3A
peak
Over entire temperature range
Inrush energy max. 1A
2
s 1A
2
s Over entire temperature range
Inrush delay typ. 270ms 220ms
*) The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Fig. 4-1 Typical turn-on behavior at nominal
load and 25°C ambient temperature
Input Current 2A/DIV
Input Voltage 1000V/DIV
Output Voltage
Inrush
Delay
5. DC-INPUT
Do not operate this power supply with DC-input voltage.
Investigate using the QTD20.241 instead for DC-input voltages.
5/27
All parameters are typical values specified at 24V, 20A, 3x 400Vac, 50Hz, symmetrical mains voltages, 25°C ambient and after
a 5 minutes run-in time unless otherwise noted.
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