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176 Ulošci osigurača Fuse - links KARAKTERISTIKA CHARACTERISTIC gR, aR A - struja kratkog spoja sa 80 % istosmjerne komponente ( r = 1.8 ) short circuit current with 80 % d.c. component B - struja kratkog spoja bez istosmjerne komponente ( r = 1 ) short circuit current without d.c. component 2ÏHNLYDQD VWUXMD N$ HII Prospective current (kA r.m.s. ) 3URSXĞWHQD VWUXMD N$ Cut-off current (kA) 0.1 0.2 0.4 0.6 1 2 3 4 6 8 10 20 30 40 60 80 120 0.2 0.3 0.4 0.6 0.8 1 2 3 4 6 8 10 20 30 40 60 80 100 20 A 32 A,40 A 25 A 50 A 63 A 80 A 100 A 125 A 160 A g =1.8 g =1 FRV 1400 1300 1200 1100 1000 900 800 700 600 500 100 200 300 400 500 600 700 1DULQXWL QDSRQ 8 D 9 HII Applied working voltage U D (V r.m.s. ) 1DSRQ 8/ 9 PD[ Arc voltage UL (V max ) Dijagram napona luka U L =f(U a ) Arc voltage diagram U L =f(U a ) Dijagram propuštenih struja; AC 690 V , cos ϕ = 0,1 - 0,3 Cut - off current diagram; AC 690 V , cos ϕ = 0,1 - 0,3