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TechnicalNote150
AluminumPowerCables
InstallationGuidelines
TherehasbeensomeconfusiononwhetheritisacceptabletousealuminumconductorswheninstallingABBdrives.
Thisdocumentaddressessomeoftheconcernsandgivessomeguidanceonbestpractices.Whileinsomecasesitmay
beacceptabletousealuminumconductors,theuseofcopperconductorswouldbegreatlypreferred.
Themainconcernwhenusingaluminumconductorsisfortheeaseofoxidationonthecontactsurfaces.Withoutproper
installationproceduresandmaintenancethiscanleadtopoorconductivityatconnectionpointsthatresultsinhigh
resistancecausingunwantedheatingandpoorcurrentflow.
ThedriveinstallationmanualmaygiveinstructionsonusingaluminumcablesforIECinstallationsforsomeofdrive
ratings,butaluminumcablesarenotallowedforULNECinstallationsintheU.S.Seetheexamplebelowfromthe
ACS580HardwareManual.Page338EN/ACS580-01hardwaremanual()
LVD-EOTKN150U-ENREVA
Effective:2024-04-081
ThistableisforIECinstallationsonly.Noticealsothataluminumconductorsarenotallowedforratingsthatdonotlist
thecablesizeinthetable.AluminumcablescanbeusedwithUn=230VframesR5…R8onlyfortheACS580drives
shown.
Itmayalsobeacceptabletousealuminumforcontrolcableconnectionsbutbeawarethecopperisgreatlypreferredfor
overaluminumconductors.Besuretofollowanyapplicablelocalornationalcodesandifthechoiceismadetouse
aluminum,herearesomerecommendedpractices:
•Ifconductorsarenotstrippedandusedimmediately,protecttheendfromoxidationwithacap.
•Stripthecablejustbeforeterminatingit.
•Removetheoxidelayerwiththepropertool:
Scrapethestrippedsurfaceoftheconductor,thenimmediatelyapplyaneutralgreaseorVaseli
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