Rockwell Automation 1606-XLS960E-3 Power Supply Reference Manual - Manual (Page 11)

All parameters are specified at 24V, 40A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
Rockwell Automation Publication 1606-RM005A-EN-P - February 2014 11
Bulletin 1606 Switched Mode Power Supplies
12. Efficiency and Power Losses
Efficiencies for 3-Phase operation:
3AC 400V 3AC 480V
Efficiency typ. 95.3% 95.2% at 24V, 40A
Average efficiency *) typ. 94.7% 94.6% 25% at 10A, 25% at 20A, 25% at 30A. 25%
at 40A
Power losses typ. 1.5W 1.5W with activated shut-down
typ. 9.5W 9.8W at 24V, 0A (no load)
typ. 24.1W 25.0W at 24V, 20A (half load)
typ. 47.3W 48.4W at 24V, 40A (full load)
*) 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.
Efficiencies when using only 2 legs of a 3-phase system:
2AC 400V 2AC 480V
Efficiency typ. 94.4% **) 94.7% **) at 24V, 40A
Power losses typ. 56.9W **) 53.7W **) at 24V, 40A (full load)
**) Curves can be found in section 25.4.
Fig. 12-1 Efficiency vs. output current at 24V,
typ.
Fig. 12-2 Losses vs. output current at 24V,
typ.
Efficiency
8 12 16 20 24 28 32 36 40A
92
93
94
Output Current
95
96%
3x480Vac
3x400Vac
Power Losses
0 4 8 12 16 20 24 28 40A
10
0
30
40
50
60W
32 36
20
3x400Vac
3x480Vac
Output Current
Fig. 12-3 Efficiency vs. input voltage at 24V,
40A, typ.
Fig. 12-4 Losses vs. input voltage at 24V, 40A,
typ.
Efficiency
350 400 450 500 3x550Vac
94.9
95.0
95.1
95.2
Input Voltage
95.3
95.4
95.5%
Power Losses
350 400 450 500 3x550Vac
44
45
46
47
Input Voltage
48
49
50W