ITT IM213 Water Pump User Manual


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9
WARNING
Hazardous
voltage
Mounting the Controller
Section 5 (continued)
Note
Donotblocktheheatsink(ns)andfansanddonotsetanythingontheunits.
Warning
Thecontrolleraccesscovershouldalwaysbesecurelyfastenedtothecontrolboxdue
tothedangerousvoltage/shockhazardinsidetheunit.Alockcanbeusedtoprevent
unwantedentry.
Power Supply and Wiring
Section 6
Power Supply
Note
InstallationandmaintenanceMUSTbeperformedbyproperlytrainedandqualiedpersonnel.
AlwaysfollowtheNationalElectricalCode(NEC)orCanadianElectricCode(CEC),aswellasall
state,localandprovincialcodeswhenwiringthesystem.
Thetypeoftransformerandtheconnectioncongurationfeedingadriveplaysanimportantroleinitsperformance
andsafety.Thefollowingisabriefdescriptionofsomeofthemorecommoncongurationsandadiscussionoftheir
virtuesandshortcomings.Alwaysaskwhattypeofpowersystemthesitehasbeforesizingthedrive.
Delta/Wye with grounded Wye neutral
Thiscongurationisoneofifnotthemostcommon.Itprovidesrebalancingofunbalancedvoltagewitha30
degreephaseshift.Dependingontheoutputconnectionsfromthedrivetomotor,thegroundedneutralmay
beapathforcommonmodecurrentcausedbythedriveoutput.
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