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Answer Posted / nidal rafeeque
Specifically, these curves denotes the instantenous
tripping current, if fault current crosses the designated
mark.
B : 2-5 times the rated current.
C: 5-10 " " " "
D : 10-15 " " " "
C- curves type are used for heavy currents in normal
working.(e.g. Heaters, Gyesers, Irons)
D-curves types are used for heavy inrush currents.(Motors
etc)
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