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5、iiorcrtficr~111:iti:III!'rotlicrsite.nicrcasonisobvioits:tl~cto\.crishighcrthanthcsurroundingterrainandIacor~duc~or.47.:96Towcrstructuresliavcaccrtaitiailiountofrcsisrnnccandinductanccpcrfost.Mostpcoplcthinkofrcsis-tanccwhentalkingaboutlightning.14owcvc
6、r.atovcrmwithallofitswcighthasrathcrs~nnlljointrcsislati~c..4typicaltowcrjointislessthan001ohms.Thisiiin!.sccmsizabicvIicn18Uistraversing,but\.c\fillscctlintotlicrlnrgcr:oltagcsarcprcscnldurin~aiigl1tnil1gslriL.c,IApproximaleInductanceInMicrohenries
7、Evcgcoliductorhasinductancc.Tl~canlountoftonrcrForConductorsiiiductanccisdcpcndcrituponitsgcotiictriccotlfi~iirn-tion.'Thiswidth-to-hciglitratioanditsi~ciglit~villTOCALCULATETHEINDUCTANCEdctcrniinctlictoL?Iinductanccofalovcr.A150-fo~tOFAWIREUSE:towcr,u'
8、illl35-inchsidcnfidths,canliavca11inductanccL(inpH)=0.508s[2.303log,,(4sId)-0.751x10"ofabout40pH.Tiiisvahlcofitiductancccanbcapproxin~atcd(L4'1H51%)bytrcatingtllctovcrasaI14wrpnvcantcnnausing:TOCALCULATETHEINDUCTANCEOFSTR