QS20.241, QS20.241-A1, QS20.241-C1
Q-Series
24V, 20A, SINGLE PHASE INPUT
9. EFFICIENCY AND POWER LOSSES
AC 100V
91.6%
91.0%
AC 120V
92.4%
AC 230V
93.9%
Efficiency
typ.
typ.
at 24V, 20A
Average efficiency *)
91.8%
92.9%
25% at 5A, 25% at 10A, 25%
at 15A. 25% at 20A
Power losses
typ.
typ.
9.0W
44.0W
9.2W
39.6W
10.0W
31.4W
at 24V, 0A
at 24V, 20A
*) The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25%
of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100%
of the nominal load for the rest of the time.
Fig. 9-1 Efficiency vs. output current at 24V,
Fig. 9-2 Losses vs. output current at 24V, typ.
typ
Efficiency
Power Losses
230Vac
94%
45W
100Vac
40
35
93
92
91
90
89
88
120Vac
230Vac
30
25
20
15
87
86
10
5
Output Current
Output Current
4
6
8
10 12 14 16 18 20A
0
2
4
6
8 10 12 14 16 18 20A
Fig. 9-3 Efficiency vs. input voltage at 24V,
Fig. 9-4 Losses vs. input voltage at 24V, 20A,
20A, typ.
typ.
Efficiency
Power Losses
94%
50W
93
92
91
90
89
45
40
35
30
25
Input Voltage
Input Voltage
88
20
85
120
155
190
225 260Vac
85
120
155
190
225 260Vac
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.
9/26
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