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Efficiency and Power
Losses
Figure 13 - Efficiency Versus Output Current at 24V, Typ
Efficiancy
91%
c
89%
a
87%
85%
83%
81%
79%
0
0.3
0.6
Figure 15 - Efficiency Versus Input Voltage at 24V, 1.5 A, Typ
E fficiency
92%
91%
90%
89%
88%
87%
86%
85
120
155
190
Attributes
Efficiency
Average efficiency
Power losses
The average efficiency is an assumption for a typical application where the
power supply is loaded with the following:
•
25% of the nominal load for 25% of the time
•
50% of the nominal load for 25% of the time
•
75% of the nominal load for 25% of the time
•
100% of the nominal load for 25% of the time
b
a) 230V AC
b) 120V AC
c) 100V AC
0.9
1.2
1.5 A
Output Current
225 260Vac
Input Voltage
Rockwell Automation Publication 1606-RM122A-EN-P - September 2021
DC Power Supply - 24V, 2.5 A, 60 W, Single-phase Input Reference Manual
Values
AC 100V
AC 120V
Typ
89.4%
90.5%
Typ
89.0%
89.6%
Typ
0.25 W
0.25 W
Typ
2.2 W
2.1 W
Typ
4.3 W
3.8 W
Figure 14 - Losses Versus Output Current at 24V, Typ
P ower Losses
4W
3W
2W
1W
0
0
0.3
Figure 16 - Losses Versus Input Voltage at 24V, 1.5 A, Typ
P ower Losses
5W
4.5
4.0
3.5
3.0
2.5
2.0
85
120
Notes
AC 230V
90.6%
At 24V, 1.5 A (full load)
25% at 0.38 A, 25% at 0.75 A,
88.2%
25% at 1.13 A. 25% at 1.5 A
0.3 W
At no load
2.4 W
At 24V, 0.75 A (half load)
3.7 W
At 24V, 1.5 A (full load)
c
b
a
a) 230V AC
b) 120V AC
c) 100V AC
0.6
0.9
1.2
1.5 A
Output C urrent
155
190
225 260Vac
Input Voltage
11
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