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169 Ulošci osigurača Fuse - links KARAKTERISTIKA CHARACTERISTIC gG 3UHNLGQD PRġ 5 MREŘAMA POGONSKOG NAPONA !# 6 ULOŃCI OSIGURAĐA SA G' KARAKTERISTIKOM POUZDANO PREKIDAJU K! eff !# 6 K! eff !# 6 I K! eff !# 6 KOD NAPONA 5 n I COS UZ ISTOVREMENO VELIKO STRUJNO OGRANIĐENJE VIDI $IJAGRAM PROPUŃTENIH STRUJA U VERTIKALNOM ILI HORIZONTALNOM POLOŘAJU ! STRUJA KRATKOG SPOJA SA ISTOSMJERNE KOMPONENTE r short circuit current with 80 % d.c. component " STRUJA KRATKOG SPOJA BEZ ISTOSMJERNE KOMPONENTE r short circuit current without d.c. component Breaking capacity Fuse - links with gG characteristic definitely break 50- 120 kA r.m.s. in networks AC 400 V, 120 kA r.m.s. in networks AC 500 V and 80 kA r.m.s. in networks AC 690 V at voltage 1,1 U n and cos = 0,2 with a great current limiting - see Cut - off current diagram. Dijagram propuštenih struja; AC 400/500/690 V Cut - off current diagram; AC 400/500/690 V 2ÏHNLYDQD VWUXMD N$ eff ) / Prospective current (kA r.m.s. ) 3URSXĞWHQD VWUXMD N$ Cut-off current ( kA ) 3 3 3 3 3 ! ! ! ! ! ! ! ! 3 ! ! ! ! ! ! ! ! ! ! ! ! B 2ÏHNLYDQD VWUXMD N$ eff ) / Prospective current (kA r.m.s. ) 9LUWXDOQR UDVWDOQR YULMHPH V Virtual pre - arcing time (s) ! ! ! ! ! 3 ! 3 ! ! ! 3 ! ! ! ! ! ! ! ! ! ! ! 3 3 Vremensko - strujne karakteristike 0RIKAZANE VREMENSKO STRUJNE KRIVULJE ULOŘAKA OSIGURAĐA SU hSREDNJE KRIVULJEv /DSTUPANJE NA STRUJNOJ KOORDINATI NALAZI SE UNUTAR DOPUŃTENOG PODRUĐJA OD ¡ PREMA (2. %. I $). 6$% Time - current characteristics Represented time - current curves of fuse - liks are “medium curves”. Deviation in the current co - ordinate are situated inside permissible range of ± 10 % according to HRN EN 60269 and DIN VDE 0636.