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Power and Ground Requirements 1-9

920550-5020 Rev 14 HN4000 Hardware Installation Guide

1.7 Power and Ground Requirements

1.7.1 Power Budget

ThepowersourcefeedinganHN4000mustprovideanominal‐48VDCat2Amperes.

DCvoltageMin/Maxis‐40.0to‐57.6VDC,measuredatthechassis.

A2Amperefuseratingisrecommended.

1.7.2 Power Requirements

TherackfortheinstallationoftheHN4000mustbeequippedwithacircuitbreakerpanelor

fusepanel.Iftherackdoesnothaveacircuitbreakerpanelorfusepanel,onemustbeaccessi‐

blewithinacablingdistanceof15feet(4.5m)ofthepowerinputsonthe

HN4000chassis.

TheHN4000mustbeconnectedtoagroundedSafetyExtraLowVoltage(SELV)source.The

SELVsourceisdefinedasDCvoltagesratedunder60VDC.Refertothesection”Installingthe

GroundandPowerCables”onpage2‐6forinstallationinformation.

1.7.3 Grounding Requirements

TheHN4000chassisisequippedwithadouble‐holecrimpedterminal.Groundingoftheraw

endofthecableshouldconformwithlocalpractices,usingwiresizesof

10‐14AWG(1.6‐2.6mm).

Refertothesection”InstallingtheGroundandPowerCables” on page 2‐6forinstallation

information.

1.8 Required Tools

ThefollowingtoolsarerequiredforanHN4000installation:

Note

The DC return is to remain isolated from the system frame and the chassis (DC-I).

Caution

The HN4000 must be permanently grounded to a Common Bonding Network (CBN).

Tools

•#1,#2,and#3Phillipsscrewdrivers

•1/8inchflatbladescrewdriver

•3/8inchhexnutdriverorratchet/socketcombination

•Cabletiecutters

•Crimperfor#10‐14AWGlug

Hatteras HN4000 User Manual

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