Protection of Semiconductor Device against Overcurrent By Fuse
- The fault current flows through
power converter due to short circuit, surge current or overload condition.
- The
semiconductor device may damage due due
to fault current and temperature rise.
- The power diodes and SCRs are protected
by using fuse in series with supply system is shown in the figure A.
- The fast
acting fuse is now used in place of glass fuse generally.
- The SCR is protected
against fault current by using series fuse connection as shown in the figure B.
The following are advantages of
connected of fuse in series with the SCR.
- There is co – ordination between
semiconductor device and fuse is done.
- If there is fault in the SCR, it is isolated from the circuit without disturbing other SCRs.
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