Simrad TRANSDUCER - INSTALLATION GENERIC REV H Manuel d'installation Page 20

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SimradMS70
Generalinstallationrequirements
ThefollowinginstallationrequirementsareapplicabletothisKongsbergMaritime
delivery.
Approvalbyclassicationsociety
TheSimradMS70transducerinstallationmustbeapprovedbyDetNorskeVeritas
(DNV)oranotherclassicationsociety.
Theshipownerandshipyardperformingtheinstallationareresponsibleforobtaining
theinstallationapproval.
Supplypower
Thesupplyvoltagetotheequipmentistobekeptwithin±10%oftheinstallation’s
nominalvoltage.Maximumtransientvoltagevariationsonthemainswitchboard’s
bus-barsarenottoexceed-15%to+20%ofthenominalvoltage(exceptunderfault
conditions).
KongsbergMaritimerecommendsthattheSimradMS70ispoweredusingan
UninterruptedPowerSupply(UPS)withsinewaveoutput.
TheUPSmusthavethecapacitytoindependentlymaintainpowertothesystemfora
minimumof10minutes.Thisensuresthatthesystemcanbeswitchedoffinacontrolled
mannerintheeventofapowerfailure.
Compassdeviation
Oncetheinstallationiscomplete,thevesselmustbeswungwiththesysteminboth
theoperativeandinoperativemodes.Theshipownerandcaptainareresponsiblefor
updatingthedeviationtableaccordinglywithregardtothevessel’snationalregistryand
correspondingmaritimeauthority.
Noisesources
Thevessel’shull,rudder(s)andpropeller(s)shouldbethoroughlyinspectedindrydock
priortoinstallation.
Roughnessbelowthewater-linedeformitiesintheshellplatingandprotrudingobstacles
cancreateunderwaternoise.Thesesourcesofturbulencemustbesmoothedorremoved
asbestaspossible.Itisespeciallyimportantthatthepropeller(s)isnotpittedordamaged.
Drydocking
Makesurethatampleclearanceunderthetransducerand/orprotectionblisterisprovided
whendrydockingthevessel.
Avoidlocatingsupportingblocksorstructuresinthevicinityofthisequipment.
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