IEEE Std 998-2012 tseem muab cov cuab yeej tsim qauv tseem ceeb- dov-sphere electrogeometric qauv- siv los nrhiav cov masts thiab thaiv cov xov hlau kom lub ntim tiv thaiv nyob twj ywm tsis muaj kev cuam tshuam ncaj qha. Thaum geometry raug kho, xaiv cov khoom txiav txim siab ntev. Lub 1936 Norris Dam substation lattice ze Knoxville, Tennessee, muaj ib qho ntawm cov ntsiab lus ntev tshaj plaws - cov ntsiab lus. Kub-dip galvanized kaum (3 × 3 × ⅜ hauv posts, 2 × 2 × ⁵⁄₁₆ hauv lacings) ntsia los ntawm Tennessee Valley Authority tau soj ntsuam los ntawm American Galvanizers Association hauv 1997: tsawg kawg zinc thickness ntsuas 2.6 mils, nruab nrab tsuas yog 3.2 mils alloy- txheej staining thiab lub hauv paus hlau tsis muaj xeb liab. Los ntawm 2015 tus qauv tseem pom tsis muaj qhov cuam tshuam loj tom qab ze li yim caum xyoo ntawm huab cua huab cua. Parallel South African pov thawj los ntawm Eskom's Blouwater (34-35 xyoo kev pabcuam) thiab Pentrich (40 xyoo) substations, luam tawm los ntawm Hot Dip Galvanizers Association ntawm Southern Africa, tau sau cov coatings seem txaus rau lwm peb mus rau plaub xyoo caum txawm nyob rau hauv ntug dej hiav txwv ntsev.
Ntev tsis siv neeg. Hauv cov av txhoj puab heev, daim phiaj tooj liab hauv av tuaj yeem nrawm zinc noj los ntawm kev sib txuas galvanic. Dawson Public Power District hauv Nebraska tau sau tseg qhov kev cuam tshuam no thiab tom qab ntawd txo nws nrog kev tiv thaiv cathodic. Copper-clad steel (feem ntau ntau dua los yog sib npaug li 0.25 hli tooj liab hla lub tub ntxhais hlau) muaj cov kev daws teeb meem nruab nrab: kwv yees li 20-30% IACS conductivity, mechanical resistance to tub nyiag thiab cua qaug zog, thiab corrosion nqi kwv yees li peb zaug qeeb dua li cov galvanized rods hauv cov chaw kuaj sim. Rau 500 kV yards nyob rau hauv corrosive ntug hiav txwv chaw, Pacific Gas thiab hluav taws xob tau nyiam cov khoom tooj liab busbars (60 × 6 mm) qhov twg conductivity thiab permanence ua pov thawj tus nqi siab dua thawj zaug.
Daim teb - muab tau txoj cai yog li ntawd. Qhia cov zinc loj tsawg kawg yog 610 gm⁻² raukub-dip galvanized steellos yog txheeb xyuas tooj liab cladding thickness nrog tib nruj siv rau dov -sphere vojvoog. Siv exothermic lossis teev cov khoom sib txuas uas tsis ua txhaum cov txheej txheem tiv thaiv, thiab teem caij seem - ntsuas qhov tuab ntawm kaum- xyoo ib ntus. Xaiv qhov raugzinc txheej thicknessthiabcorrosion- tiv taus GI formulationshloov cov hlau los ntawm tus neeg xyuas pib ib ntus mus rau hauv ib qho kev tiv thaiv ruaj khov uas khaws kev ncaj ncees thiab txwv cov kauj ruam - thiab - kov cov peev xwm nyob rau hauv ob qho tib si xob laim thiab txhaum.
Steel cuam tshuam qhov mob stroke. Tsuas yog qhov kev ncaj ncees ntawm nws cov txheej txheem tiv thaiv txiav txim siab seb cov neeg ua haujlwm tiam tom ntej tseem tuaj yeem tso siab rau lub substation lub hauv paus system. Rau qhov project-cov lus qhia tshwj xeeb txheej txheej lossis cov ntaub ntawv cov ntaub ntawv sib tw rau cov av tiv thaiv hauv zos thiab cov ntug dej hiav txwv raug, hu rau pab pawg kws tshaj lij ntawm Sino-Galvanized.
