QuickSpecs
HP Entry-Level Power Supplies
Power Specifications
c04390737 – DA – 15030 Worldwide — Version 2 — December 1, 2014
Page 6
HP 550W FIO Power Supply (730941-B21)
HP's Generic Part Number
748949-001
HP's Spares Part Number
766879-001
Input Voltage Range ( V rms )
100-240
Frequency Range (Nominal) ( Hz )
50-60
Nominal Input Voltage ( Vrms )
100
120
127
200
208
220
230
240
Maximum Rated Output Wattage Rating
550
550
550
550
550
550
550
550
Nominal Input Current ( A rms )
6.5
5.4
5.1
3.2
3.0
2.9
2.7
2.6
Maximum Rated Input Wattage Rating ( Watts )
645
638
636
624
623
623
622
621
Maximum Rated VA (Volt-Amp)
652
644
642
630
630
629
628
627
Efficiency ( % )
85.2
86.3
86.5
88.1
88.2
88.4
88.5
88.6
Power Factor
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
Leakage Current ( mA )
0.32
0.38
0.40
0.63
0.65
0.69
0.72
0.75
Maximum Inrush Current (A peak )
30
Maximum Inrush Current duration ( ms )
10
Maximum British Thermal Unit Rating ( BTU-Hr )
2201
2176
2169
2130
2127
2124
2121
2119
HP 800W Gold (Redundant) AC Power Input Module
(744689-B21) with Power Backplane
(745813-B21)*
HP's Generic Part Number (Backplane)
743908-001
HP's Generic Part Number (Power Input Mod)
743907-001
HP's Spares Part Number (Backplane)
754376-001
HP's Spares Part Number (Power Input Mod)
744689-B21
Input Voltage Range ( V rms )
100-240
Frequency Range (Nominal) ( Hz )
50-60
Nominal Input Voltage ( Vrms )
100
120
127
200
208
220
230
240
Maximum Rated Output Wattage Rating
550
550
550
800
800
800
800
800
Nominal Input Current ( A rms )
6.2
5.1
4.8
4.4
4.3
4.0
3.8
3.7
Maximum Rated Input Wattage Rating ( Watts )
616
606
604
880
880
878
875
873
Maximum Rated VA (Volt-Amp)
622
612
610
888
888
887
884
881
Efficiency ( % )
89.4
90.8
91.1
90.9
90.9
91.1
91.4
91.7
Power Factor
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
Leakage Current ( mA )
0.33
0.40
0.42
0.67
0.69
0.73
0.77
0.80
Maximum Inrush Current (A peak )
30
Maximum Inrush Current duration ( ms )
10
Maximum British Thermal Unit Rating ( BTU-Hr )
2099
2065
2058
2999
2999
2994
2984
2975
*
NOTE:
The above power specifications are based on a configuration that includes a single power backplane with two AC power
input modules installed.
