ITT IM213 Water Pump User Manual


  Open as PDF
of 28
 
14
WARNING
Hazardous
voltage
WARNING
Hazardous
voltage
Section 6 (continued)
Input Power and Line Transformer Requirements
Thelineinputvoltageandtransformerpowermustmeetcertainphaseandbalancerequirements.If you or
your installing electrical contractor is in doubt of the requirements, the following provide guidelines
for installation. When in doubt contact the local power utility or the factory.
Beforeconnectingpowertothecontrollermeasurethelinetolineandlinetogroundvoltagefromthepower
source.Thelinetolinevoltagemustbeintherangeof195Vacto265Vac(230V+/–15%)for230Vmodels
and391Vacto529Vac(460V+/–15%)for460Vmodels.Themaximumphasetophaseimbalanceis+/–3%.
Ifthephasetophaseimbalanceisgreaterthan+/–3%thenanisolationtransformermaybenecessary.The
linetogroundvoltagemustbelessthan110%ofthenominal(230Vor460V)linetolinevoltage.Ifthelineto
groundvoltageisnotinthisrangetheEMClterandMOVcomponentsmayneedtoberemoved(seesectionon
“Ungroundedsecondary”transformers)oranisolationtransformerwithagroundedsecondarymaybenecessary.
Ifanisolationtransformerisused,thebestchoiceisONEthreephase,sixwindingtransformer.Adeltaprimary
isbestforthirdharmoniccancellation.Awyesecondaryavoidscirculatingcurrentproblemsandprovidesthe
verydesirableoptionofgroundingthesecondaryneutralforminimumvoltagestressandrippletoground.The
transformershouldhaveaKVAratingatleast1.1timesthemaximumconnectedHP.AKfactorof6issufcient
iftransformerimpedenceisgreaterthan2%.AKFactorof5issufcientiftransformerimpedenceisgreater
than3%.ThetransformermanufacturermayprovidederatingfornonKFactorratedtransformerstooperateat
thedriveproducedKFactorlevels.
Othertransformercongurationsareacceptable.Three single phase transformers can be used if they are
identical for phase to phase symmetry and balance.Awyeconnectedprimaryneutralshouldneverbe
grounded.Greatcareshouldbetakenwithdeltaprimarydeltasecondarycongurations.Anylackofphaseto
phasesymmetrycouldresultincirculatingcurrentsandunacceptabletransformerheating.
Warning
Neverusephaseconverterswithdrivesasnuisancetrippingandpossibledamagemay
occur.Instead,usesinglephaseinputpowerand50%deratefactor.
Warning
“OpenDelta”powersystemsshouldbesizedusingthe50%deratefactor.
Consultfactory.
Section 7
Output Power Connections
Runthemotorleadwirefromthemotororconduitboxthroughmetalconduittothebottomofthe
controller.Usemetalconduitandmetalconduitconnectors.SizetheconduitsaccordingtotheNEC,
CECorlocalcodes.Connectconduitandinsertthewiresthroughthesecondorthirdopeningfromthe
left.Choosetheopeningthattsorislargerthantheconduitused.Iftheopeningislargerthantheconduit,
useconduitbushingstoattachtheconduittothecontroller.
Power Supply and Wiring
Hazardous
voltage
DANGER
Starting the System
 previous next