{"id":4039,"date":"2018-12-17T13:22:24","date_gmt":"2018-12-17T13:22:24","guid":{"rendered":"http:\/\/limit-tools.local\/tips-and-tricks\/about-electrical-safety\/"},"modified":"2019-04-30T09:42:56","modified_gmt":"2019-04-30T09:42:56","slug":"about-electrical-safety","status":"publish","type":"page","link":"https:\/\/limittools.test.consids5.se\/no\/tips-and-tricks\/about-electrical-safety\/","title":{"rendered":"Om Elsikkerhet"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]I takt med at distribusjonssystemer og belastning blir stadig mer komplekse, \u00f8ker risikoen for overspenningstransienter. Motorer, kondensatorer og utstyr for str\u00f8mkonvertering, slik som motorstyringer med variabel hastighet, kan gi opphav til lysbuer. Lynnedslag i kraftledninger utend\u00f8rs kan fora\u030arsake ekstremt farlige transienter med h\u00f8y energi. Na\u030ar du utf\u00f8rer ma\u030alinger pa\u030a elektriske systemer, utgj\u00f8r disse transientene en \u00abusynlig\u00bb og stort sett uunnga\u030aelig fare. De oppsta\u030ar jevnlig i lavspenningskretser og kan komme opp i toppverdier pa\u030a tusentalls volt. For at du skal kunne beskytte deg mot transienter, ma\u030a sikkerheten v\u00e6re innebygd i testutstyret.[\/vc_column_text]\n

\"Overvoltage
We have specified the safety class for each instrument <\/strong> in texts and tables, so you can select the right level for your work.<\/figcaption><\/figure><\/div>[\/vc_column][\/vc_row][vc_row css_animation=”bounceIn” css=”.vc_custom_1545052763468{border-radius: 2px !important;}”][vc_column width=”1\/3″][vc_column_text]<\/p>\n

Overspenningskategori<\/h4>\n

[\/vc_column_text][vc_column_text]CAT IV<\/strong>[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text]<\/p>\n

I Korthet<\/h4>\n

[\/vc_column_text][vc_column_text]Trefase pa\u030a prim\u00e6rniva\u030a og alle ledere for utend\u00f8rsbruk.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text]<\/p>\n

Eksempel<\/h4>\n

[\/vc_column_text][vc_column_text]<\/p>\n

    \n
  • Viser til \u00abinstallasjonens opprinnelse\u00bb, dvs. der lavspenningstilkoblingen er koblet til str\u00f8muttaket.<\/li>\n
  • Str\u00f8mma\u030alere, prim\u00e6re overslagsvern.<\/li>\n
  • Utend\u00f8rs og pa\u030a serviceniva\u030a, serviceledninger fra pol til bygning, ga\u030ar mellom ma\u030aler og panel.<\/li>\n
  • Luftforbindelse med frittliggende bygning, bakkeforbindelse med br\u00f8nnpumpe.<\/li>\n<\/ul>\n

    [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/3″][vc_column_text]CAT III<\/strong>[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text]Trefasdistribusjon, herunder enfaset kommersiell belysning[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text]<\/p>\n

      \n
    • Utstyr i faste installasjoner, f.eks. kontrollutstyr og flerfasmotorer.<\/li>\n
    • Buss og mating ved industrianlegg.<\/li>\n
    • Mateledninger og korte hovedspenningskretser, distribusjonspanelenheter.<\/li>\n
    • Belysningssystem i st\u00f8rre bygg.<\/li>\n
    • Apparatuttak med korte tilkoblinger til serviceniva\u030a.<\/li>\n<\/ul>\n

      [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/3″][vc_column_text]CAT II<\/strong>[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text]Enfas st\u00f8psel-tilkoblede belastninger[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text]<\/p>\n

        \n
      • Utstyr, b\u00e6rbare verkt\u00f8y samt husholdnings- og andre belastninger.<\/li>\n
      • Uttak og lange hovedspenningskretser.<\/li>\n
      • Uttak ved mer enn 10 meter fra KAt III-kilden.<\/li>\n
      • Uttak ved mer enn 20 meter fra KAt IV-kilden.<\/li>\n<\/ul>\n

        [\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"[vc_row][vc_column][vc_column_text]I takt med at distribusjonssystemer og belastning blir stadig mer komplekse, \u00f8ker risikoen for overspenningstransienter. Motorer, kondensatorer og utstyr for […]","protected":false},"author":2,"featured_media":1667,"parent":4026,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-4039","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nOm Elsikkerhet - Precision measuring instruments | Limit<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/limittools.test.consids5.se\/no\/tips-and-tricks\/about-electrical-safety\/\" \/>\n<meta property=\"og:locale\" content=\"nb_NO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Om Elsikkerhet - Precision measuring instruments | Limit\" \/>\n<meta property=\"og:description\" content=\"[vc_row][vc_column][vc_column_text]I takt med at distribusjonssystemer og belastning blir stadig mer komplekse, \u00f8ker risikoen for overspenningstransienter. 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