Data Sheet

QT20.241, QT20.241-C1
Q-Series
24V, 20A, THREE PHASE INPUT
Apr. 2017 / Rev. 2.1 DS-QT20.241-EN
3. AC-INPUT
The unit is optimized to operate on a three phase system. An operation on only two legs of a three-phase system is
possible with slightly different parameters. See chapter 22.4 for details.
AC input nom. 3AC 380-480V Wide-range input
AC input range min. 3x 323-552Vac Continuous operation
Suitable mains systems TN, TT, IT Line (L) must not be earthed (grounded)
Allowed voltage L to Earth max. 400Vac Continuous, IEC 60664-1
Input frequency nom. 50–60Hz ±6%
Turn-on voltage typ. 3x 263Vac Steady-state value, load independent, see Fig. 3-1
Shut-down voltage typ. 3x 242Vac Steady-state value, load independent, see Fig. 3-1
3AC 400V 3AC 480V
Input current typ. 0.79A 0.65A At 24V, 20A, see Fig. 3-3
Power factor
*)
typ. 0.94 0.95 At 24V, 20A, see Fig. 3-4
Start-up delay typ. 350ms 290ms See Fig. 3-2
Rise time typ. 30ms 30ms At 24V, 20A, only resistive load see Fig. 3-2
typ. 40ms 40ms At 24V, 20A, resistive load with an
additional 20mF capacitor
Turn-on overshoot max. 500mV 500mV See Fig. 3-2
*) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit.
Fig. 3-1 Input voltage range Fig. 3-2 Turn-on behavior, definitions
Turn-on
4/27
323V
Rated input range
V
IN
P
OUT
242V 552Vac
Shut-down
263V
Start-up Rise
delay Time
Overshoot
- 5%
Output
Voltage
Input
Voltage
L1 L2 L3
Fig. 3-3 Input current vs. output load at 24V Fig. 3-4 Power factor vs. output load at 24V
20A
2 4 6 8 10 12 14 16 18
0
0.1
0.2
0.3
0.4
0.5
0.6
0.8A
Input Current, typ.
0.7
Output Current
3
x
4
0
0
V
a
c
3
x
4
8
0
Va
c
Power Factor, typ.
2 4 6 8 10 12 14 16 18 20A
0.75
0.8
0.85
0.9
0.95
1.0
3x
480Vac
3x
400Vac
Output Current
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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