Siemens HiPath 3000 Service Manual page 1097

HiPath 3550 with USPSC-D
●
The maximum nominal output at the –48-V output can be increased from 53 W to 140 W
by using the EPSU2
HiPath 3350 with USPSC-D
●
Due to build-up of heat, the 5-V output format can only be loaded with a maximum of 20 W.
A maximum nominal output of 40 W is possible by using the EPSU2external power supply
unit. In addition, the maximum nominal output of the –48-V output increases from 53 W to
140 W.
HiPath 3500 with UPSC-DR
●
The maximum nominal output of the –48-V output can be increased from 53 W to 140 W
by using the EPSU2-R
HiPath 3300 with USPSC-DR
●
Due to build-up of heat, the 5-V output format can only be loaded with a maximum of 20 W.
A maximum nominal output of 40 W is possible by using the
ply unit. In addition, the maximum nominal output of the –48-V output increases from 53 W
to 140 W.
Sample calculation for a HiPath 3550
1. Determine secondary power requirement at the 5-V output
power requirements of the boards/
components used =
= secondary power requirement at the
5-V output =
The maximum nominal output of UPSC-D at the 5-V output amounts to 40 W and is
enough to cover the specified power requirement.
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
Checking Whether the Output of a Power Supply Unit is Sufficient
external power supply unit.
external power supply unit.
Identifying System Power Requirements
EPSU2-R
7.00 W 1 x CBCC
10.00 W 1 x HXGS3 (including ventilator
kit)
0.90 W 1 x TS2
2.40 W 3 x SLU8
1.30 W 1 x 8SLA
5.00 W 1 x SLC16N
0.00 W 12 x BS3/1
26.60 W
power_calc.fm
external power sup-
D-15