Hitachi UTOPIA RAS-4 Series - General Information; Electromagnetic Compatibility

10 Electrical wiring
General information
TCGB0136 rev.1 - 05/2021
98
10.1 General information
! DANGER
• DonotconnectoradjustanywiringorconnectionsunlessthemainpowerswitchisOFF.Checkandtesttoensurethatif
thereismorethanonesourceofpowersupply,allareturnedOFF.
• Useanearthleakagebreakerwithmediumsensitivity,andanactivationspeedof0.1secorless.Ifthisisnottted,thereis
ariskofelectricshockand/orre.
• Installanearthleakagebreaker,fuseorcircuitbreakerofthespeciccapacityforeachoutdoorunitpowerline.Nottting
itmaycauseanelectricshockorre.
• Checkthattheearthwireissecurelyconnected,taggedandlockedinaccordancewithnationalandlocalcodes.
• Neverconnecttheearthcabletotherefrigerantpipes.Thegasinthepipescouldcauseare.
• Donotconnecttheearthcabletothelightingarrestsystem.Theelectricalpotentialofearthwouldincreaseabnormally.
! CAUTION
• Beforeanyworktotheelectricalwiringorregularinspections,switchoffthemainspowersupplyoftheindoorandoutdoorunits.Wait
threeminutesbeforestartinginstallationormaintenancework.
• Makesurethattheinteriorandexteriorfanshavecometoacompletestandstillbeforestartingworkontheelectricalwiringorregular
inspections.
• Protectcables,thedrainagepipe,electricalcomponents,etc.fromrodentsandinsects;otherwisethesemightdamageunprotected
componentsandthiscouldresultinre.
• Donotallowcablestocomeintocontactwiththerefrigerantpipes,metaledges,printedcircuitboards(PCB)ortheelectriccomponents
insidetheunit;thecablesmaybedamagedandthiscouldresultinre.
• Firmlysecurethecablesinsidetheindoorunitwithplasticanges.
• ConnectingtheoperatinglinecablesincorrectlymayleadtofaultsinthePCB.
• Securethecableoftheremotecontrolswitchwiththecordclampinsidetheelectricalbox.
• Beforestartingworkontheinstallationoftheoutdoorunit,settheDSWrequiredtosupplyvoltageinthecorrectposition.
? NOTE
• Fixtherubberbusheswithadhesivewhentheoutdoorunitductsarenotused.
• Useshieldedtwistedpaircable(morethan0.75mm²)foroperationwiringbetweenoutdoorunitandindoorunit,andoperationwiring
betweenindoorunitandindoorunit.(Donotusewirewithmorethan3cores).
• H-LINKtwistpairshieldedcablemustbegroundedintheoutdoorunitside.
• Useshieldedwiresforintermediatewiringtoprotecttheunitsfromnoiseobstacleatlengthoflessthan300mandsizecompliedwith
localcode.
10.1.1 Electromagnetic compatibility
Following the Council Directive 2004/108/EC (89/336/EEC), relating to electromagnetic compatibility, next table indicates:
Maximum permissible system impedance Z
max
at the interface point of the user’s supply, in accordance with EN61000-3-11.
MODEL Z
max
(Ω) MODEL Z
max
(Ω)
RAS-3HVRC2 0.43 RAS-4HRC2E -
RAS-4HVRC2E 0.30 RAS-5HRC2E -
RAS-5HVRC2E 0.30 RAS-6HRC2E -
RAS-6HVRC2E 0.30 RAS-4HNC2E -
RAS-4HVNC2E 0.30 RAS-5HNC2E -
RAS-5HVNC2E 0.30 RAS-6HNC2E -
RAS-6HVNC2E 0.30 RAS-4HRP2E -
RAS-4HVRP2E 0.30 RAS-5HRP2E -
RAS-5HVRP2E 0.30 RAS-6HRP2E -
RAS-6HVRP2E 0.30 RAS-4HNP2E -
RAS-4HVNP2E 0.30 RAS-5HNP2E -
RAS-5HVNP2E 0.30 RAS-6HNP2E -
RAS-6HVNP2E 0.30