SimradSU90
Generalinstallationrequirements
ThefollowinggeneralinstallationrequirementsareapplicabletothisSU90delivery.
Topics
•Supplypoweronpage32
•UninterruptedPowerSupply(UPS)onpage32
•Wiringonpage32
•Compassdeviationonpage33
•Noisesourcesonpage33
•Drydockingonpage33
•Approvalbyclassicationsocietyonpage33
Supplypower
Thesupplyvoltagetotheequipmentistobekeptwithin±10%oftheinstallation’s
nominalvoltage.Maximumtransientvoltagevariationsonthemainswitchboard’s
bus-barsarenottoexceed-15%to+20%ofthenominalvoltage(exceptunderfault
conditions).
UninterruptedPowerSupply(UPS)
TheSimradSU90system(exceptthehullunit)mustbepoweredusinganUninterrupted
PowerSupply(UPS)withsinewaveoutput.
TheUninterruptedPowerSupplymusthavethecapacitytoindependentlymaintain
powertothesystemforaminimumof10minutes.ThisensuresthattheSU90canbe
switchedoffinacontrolledmannerintheeventofapowerfailure.
Wiring
Allcablesrunningbetweensystemcabinetslocatedindifferentroomsand/orondifferent
decksmustbesupportedandprotectedalongtheirentirelengthsusingconduitsand/or
cabletrays.Notethatthecablesmustnotbeinstalledinthevicinityofhigh-power
suppliesandcables,antennacablesorotherpossiblesourcesofinterference.
Formoredetailedinformationaboutcablesandwiring,refertothebasiccable
requirements.
Relatedtopics
•Basiccablerequirementsonpage307
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