27.08.2015 Views

ANALIZA POJAVA U MREŽI 6 kV PRI RAZVLAČENJU ELEKTRIČNOG LUKA

analiza pojava u mreţi 6 kv pri razvlaĉenju elektriĉnog luka

analiza pojava u mreţi 6 kv pri razvlaĉenju elektriĉnog luka

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Neposredno pre spoja faze A sa zemljom, tj. pri t = (-0),<br />

naponi faza A, B i C prema zemlji imaju vrednost:<br />

U intervalu vremena od ωt =0 0, do ωt =π π (nazovimo ga<br />

prvim intervalom), struja zemljospoja, menja se po zakonu:<br />

ίZ = 3UmƒωC sin (ωt + π) ( 9 )

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