7/29/2019 Benefits of Ground Bonding

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GROUNDINGSYSTEMS: Thepurposeofagroundingsystemstocreatealowimpedancepathtoearthgroundfor

electricalsurgesandtransientvoltages. Lightning,faultcurrents,circuitswitching(motorsturningonandoff),and

electrostacdischargearecommoncausesofthesesurges

andtransientvoltages. An

effecvegroundingsystem

minimizesthedetrimental

effectsoftheseelectrical

surges,whichinclude

degradednetwork

performanceandreliabilityandincreasedsafetyrisk.

ELECTRICALDISTURBANCES: Datacenterequipmentissensivetoelectricaldisturbances.Whileminimum

groundingrequirementsaredesignedforpersonnelsafetyand

fireprevenonpurposes,datacenterdownmeanddamage

toequipmentasaresultofinadequategroundingcancostan

organizaonmillionsofdollars.

Accordingtoinsuranceindustrydata,impropergroundingof

communicaonsystemsleadsto$500millionperyearof

damagetopropertyand/orequipmentduetolightning.

ELECTRICALNOISE: Inadatacenter,electricalnoiseisntroducedondatacableswhensurgesarenotproperlydissipatedbythegroundingsystem,resulnginlostdataand

networkinefficiencies.

Rackgroundbondingimprovesdatatransmissionefficiencies

byreducingthenoisepollungthecomputernetwork.

BESTPRACTICES: AccordingtoTIA942andtheIEEEanymetalliccomponentthatispartofthesystemincludingrac

cabinets,cabletrays,serversandotherequipmentmustbebondedtothegroundingsystem.

TIA942requireseachrackto

bonddirectlytothegroundi

gridorcommonbonding

network,direcngcurrentaw

fromsensiveelectronics.

Propergroundingisthemostimportantfactorinreliable

networkequipmentperformance. AccordingtotheIEEEth

typicalACthirdpronggroundisalmostneversufficientto

preventdamagetonetworkequipment.

Establishelectricalconnuitythroughoutracksandcabinet

forsafetyandelectrostacdischarge(ESD)protecon,and

propergroundingandbondingofnetworkequipment. The

groundingshoulddirectdamagingcurrentsawayfrom

equipment.

Youwantagroundingsystemthatdirectsdamaging

currentsawayfromequipment.

Datacentergroundingsystemsserveseveralfuncons;

prevenngelectricalnoise,providingsurgeprotecon

andeliminangelectricaldisturbances.

Rack and Cabin

Ground Bonding