Zte ZXR10 8900 Series - Grounding Wire Installation; Figure 81 AC Distribution System Grounding; Grounding Wire Interconnection between Cabinets; Grounding Wire Interconnection Inside the Cabinet

Chapter6PowerSupplyCablesInstallation
FIGURE81ACDISTRIBUTIONSYSTEMGROUNDING
GroundingWireInstallation
GroundingWireInterconnection
insidetheCabinet
Thedigitalground,workinggroundandprotectiongroundarein-
tegratedintoone.
Theworkinggroundandprotectiongroundareconnectedinside
thecabinetsinthefactory.
ThecabinetisconnectedtotheGNDswithgroundingconductors
inthefactory.
Electrostaticdischarge(ESD)facilitiesareprovidedbetweenthe
doorsandthecabinet.Doorsandcabinetareconnectedwithsoft,
coppergroundingconductorswithalengthof0.3mandadiameter
of3mm,ensuringthelowconnectionresistancelessthan0.2MΩ.
ESDfacilitiesarealsoprovidedbetweenplug-inboxesandcabinet.
Allthecabinetsurfacesarezincplatedandcolorpassivated.The
seriesofopeningsontheanglerailformountingplug-inboxesand
thecontactpointbetweentheanglerailandthecabinetshouldbe
providedwithconductiveprotection,whichprovidesaproperESD
protectionbetweentheplug-inboxesandcabinetthroughvertical
posts.
GroundingWireInterconnection
betweenCabinets
Whenajointgroundisused,makesuretheelectricpotentialsof
allthecabinetgroundsareequal.Interconnectthecabinetshells
usingknittedstripsorconductivecopperwires.Thecrosssectional
areaoftheinterconnectingwireis10mm
2
.
CondentialandProprietaryInformationofZTECORPORATION85