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Tema: Uvod u TVNI

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Standardni !"#$%#&%'($)*+#",-$'./0/+)'#112'"-'(34'5667898<br />

izolacijski nivoi (IEC 60071-1)<br />

Najviši napon za<br />

opremu<br />

Um<br />

Podnosivi napon<br />

industrijske<br />

frekvence<br />

(kVef)<br />

Standardni<br />

podnosivi<br />

atmosferski impuls<br />

(kVvrh)<br />

(kVef)<br />

3,6 10 20<br />

40<br />

7,2 20 40<br />

60<br />

12 28 60<br />

75<br />

95<br />

17,5 38 75<br />

95<br />

24 50 95<br />

125<br />

145<br />

36 70 145<br />

170<br />

52 95 250<br />

72,5 140 325<br />

(185) 450<br />

123 230 550<br />

(185) (450)<br />

145<br />

230 550<br />

275 650<br />

(230) (550)<br />

170<br />

275 650<br />

325 750<br />

(275) (650)<br />

(325) (750)<br />

245<br />

360 850<br />

395 950<br />

460 1 050<br />

Rang I:<br />

Range IE<br />

Um U F<br />

= G6:6026/-6)+6".=6(.#3/=(.% 1 kV do uključivo 245 kVU F G6HI;6026<br />

Vrijednosti 4$& ,)".="9= standardnog >+3)"%& >"3/&, napona "9& su iste za:<br />

• Faza all the– same zemlja?+9<br />

• Faza @ A$",&1)+1&"9)$1B<br />

– faza<br />

• Podužnu @ A$",&1)+1-$",&1B izolaciju<br />

@ C+.%()/=(."3<br />

(.,/3")(+.D<br />

!"#$%&'(&)<br />

*(%$12+3)"%& 4&#$.+3+%56768$"-)&96:66661 ;< 1

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