I-Lightning Protection Zone (LPZ)
Ezingeni le-IEC, amagama afana nohlobo lwe-1 / 2 / 3 noma i-class 1 / 2 / 3 yokukhusela idivayisi yokuzivikela ithandwa kakhulu. Kulesi sihloko, sizokwethula umqondo ohlobene kakhulu nemibandela yangaphambilini: indawo yokuvikela umbane noma i-LPZ.
Iyini indawo yokuvikela izibani futhi kungani kubalulekile?
Umqondo wokuvikelwa kombani usungulwe futhi uchazwe kumazinga we-IEC 62305-4 okuyisikhundla samazwe onke sokuvikela umbani. Umqondo we-LPZ ususelwa emcabangweni wokunciphisa kancane kancane amandla ombani afinyelele ezingeni eliphephile ukuze kungadala umonakalo kudivayisi ebulalayo.
Ake sibheke umfanekiso oyisisekelo.
Ngakho-ke kusho ukuthini indawo ehlukile yokuvikela umbane?
I-LPZ 0A: Kuyi-zone engavikelekile ngaphandle kwesakhiwo futhi kuvezwe ukuthi kuqondwe isiteleka sombani. Ku-LPZ 0A, akukho ukuvikela ekuphazanyisweni kwe-electromagnetic pulses LEMP (Lightning Electromagnetic Pulse).
I-LPZ 0B: NjengoLPZ 0A, iphinde ingaphandle kwesakhiwo okwamanje i-LPZ 0B ivikelwe uhlelo lwangaphandle lokuvikela umbane, evame ngaphakathi endaweni yokuvikelwa yenduku yombani. Futhi, akukho ukuvikela ngokumelene ne-LEMP.
I-LPZ 1: Yindawo ngaphakathi kwesakhiwo. Kule ndawo, kungenzeka ukuthi kukhona umbani oyingxenye yamanje okhona. Kodwa umbane wamanje uphansi kakhulu okungenani ingxenye yawo uqhutshwa emhlabathini yi-system yangaphandle yokuvikelwa kombane. Phakathi kwe-LPZ0B ne-LPZ1, kufanele kube ne-Class 1 / Uhlobo lwe-1 SPD efakwe ukuvikela amadivayisi aphansi.
I-LPZ2: Futhi yi-Zone yendawo ngaphakathi kwesakhiwo lapho kungenzeka khona ukuqhuma okuphansi. Phakathi kukaLPZ2 no-LPZ1, kufanele kube ne-Class 2 / Type2 ukuvikelwa kokusebenza kwe-device.
I-LPZ3: Njenge-LPZ1 & 2, i-LPZ3 futhi iyindawo engaphakathi kwesakhiwo lapho kungekho khona noma imisinga emincane yokwanda.