Masterclock TCR1000 Especificações descarregar pdf (Página 78)

Masterclock, Inc.

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phone(USAandCanada):1‐800‐940‐2248|phone(international):+1‐636‐724‐3666

email:[email protected]|online:www.masterclock.com

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Installation:

Formaximumprotectioninstalltwosurgearrestors,one

outside,eitherclosetotheantennaoratthepointwherethe

coaxialcableentersthebuildingandasecondasclosetothe

receivingequipment.Agoodruleofthumbtorememberisthat

alllinesenteringorexitingabuildingneed

protection.

TheSA90isabidirectionalRFdevice.EitherRFportmaybe

connectedtotheequipmentsideortheantennasideofthe

transmissionlineinterfacetoprovideprotection.Donotleave

theRFportsexposedwheninstalledoutdoors.

Thesurgearrestormustbegroundedbyattachingaground

wiretothegroundinglug.Thiswiremustbeattachedtoa

mastergroundbarorthesystemsearth groundingtoensurea

lowimpedancepathtoground.Duringinstallation,all

groundingcontactsurfacesmustbeclean,dry,andfreeof

oxidation.



GroundingRecommendations:

Aprotectionsystemwithapoorgroundisthesameashaving

noprotectionatall.

Recommendedgroundsaretheutilitycompanyground,a

groundrod,wellcasings,andcoldwaterpipesthatareof

continuousmetal.Anoteofcaution,sometimesthemetal‐cold

waterpipesarerepairedand/orextended

PVCpiping.The

introductionofPVCmaterialrendersthecoldwaterpipe

groundunacceptable.Athoroughinvestigationofacoldwater

pipegroundisimportantsincethePVCrepairsorextensions

maybecoveredbydrywall.Groundsthatareunacceptable

includesprinklerpipes,PVCpipe,conduit,buriedwireandany

groundthatcannotbeverified.

Bondingensuresthemosteffectiveground.Bondingtiesallof

thegroundsinthebuildingtogetherelectrically.Ifthereisa

riseingroundpotentialandallofthegroundsarebonded,no

damagewilloccursinceitisdifferentialvoltagethatcauses

problems.

Itis

absolutelynecessarytomakesurethatthegroundusedfor

theACpoweristhesameasthegroundusedforthedata‐line

surgeprotectors.Acommongroundreferencemustbe

achievedforallequipment.

Allgroundwiresmustbeasshortaspossibleanditis

imperative

thatthegroundwirenotbecoilednorlooped–it

mustbeasstraightaspossible.Regardingthediameterofthe

groundwire:thelargerthebetter.

Finally,theearthgroundresistanceonwhichthewhole

groundingsystemrelies,mustbelessthan5ohmsbetweenany

twopoints

withinthegroundsystem.

102

Surge Arrestor Installation

Model # SA90-SMA

WARNING

Ensurethattheantennaandcoaxialcable

thatthesurgearrestorisprotectingisnot

exposedtodirectlightningstrikes.This

deviceoffersnoprotectionforsuch

strikesandwillbedestroyed,alongwith

whateverequipmentthatitisconnected

to,byadirectstrike.

Notice:

Theinstallation,maintenance,orremovalof

antennaandsurgearrestorsystemsrequires

qualified,experiencedpersonnel.These

installationrecommendationsarewrittenfor

suchpersonnel.Installationsofthistypeof

energysuppressionequipmentshouldbemade

inaccordancewithlocalsafetyandelectrical

codesandwithregardtogoodelectricaland

engineeringpractices.

Ifyouhavequestions

regardingtheuseofthistypeofproductwith

respecttoyourinstallation,contactalocal

licensedelectricalcontractorforthelatest

electricalcodesandguidelines.Innoevent

shallMasterclock,Inc.beliableforanydirect,

indirect,special,incidental,orconsequential

damagescausedfromthe

installationoruseof

thisproduct.

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