Administration HiPath 3000/5000 V7 IP systems

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3000sb11.fm Identifying System Power Requirement For internal use only Check Whether the Output of a Power Supply Unit is Sufficient A.7 Check Whether the Output of a Power Supply Unit is Sufficient Apart from the secondary power requirements, the power output must also be checked to ensure that the maximum possible output of the system’s power supply unit is sufficient. For this, the power requirement on the 5 V output format and on the –48 V output format must be examined separately. 7 Caution To guarantee smooth system operation, the nominal output of the power supply unit at the 5 V output and at the –48 V output must be greater than the respective secondary power requirement. Procedure Proceed as follows to identify the secondary power requirement of a system: 1. Determine secondary power requirement at the 5 V output 5 V power requirement of the boards/components used = secondary power requirement at the 5 V output 2. Determine secondary power requirement at the –48 V output –48 V power requirement of the boards/components used + power requirement of connected workpoint clients (analog and digital telephones), key modules and adapters = secondary power requirement at the –48 V output Using the specified values, check whether the total power requirement exceeds the maximum possible output of the power supply unit at the 5 V output or at the –48 V output. If this is the case, you have the following options: ● HiPath 3800 The number of LUNA2 power supply units can be increased. ● 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 external power supply unit. ● 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 EPSU2 external power supply unit. In addition, the maximum nominal output of the –48 V output increases from 53 W to 140 W. P31003-H3570-Y100-4-7618, 2007-10-31 A-14 HiPath 3000/5000 V7, System Description
3000sb11.fm For internal use only Identifying System Power Requirement Check Whether the Output of a Power Supply Unit is Sufficient ● 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 external power supply unit. ● 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 EPSU2-R external power supply 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 = 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 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-H3570-Y100-4-7618, 2007-10-31 HiPath 3000/5000 V7, System Description A-15
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Administration HiPath 3000/5000 V7 IP systems

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