Electrical energy at this time becomes a very important for both house hold
corporate consumers. The friendly service, clan and free from losses and reliable
in various situations it’s must be take. Precedence in PT. PLN as the company that
provider in the national electrical energy for mountain a reliable system especially
in handling electrical interference, then the role of protection equipment with good
coordination becomes very important. On the kalibakal-09 feeder the main of
protection equipment in pairs of the power breaker and Recloser where on both
worked in coordination with the backup protection in each zone with lenght 58 km.
The calculation of short circuit interruption distance 30% three phase short circuit
current value 1693,36 A, short circuit value two phase 1466,38 A and the value of
short circuit one phase to the ground 770,36 A. In the three phase short circuit
intrrruption with a current of 850,04 A working time in PMT Outgoing 1,948
seconds, the recloser 1 time of 2,040 seconds and the working time of recloser 2
0,460 seconds. In short circuit interruption two phase with current 1466,38 A,
working time PMT Outgoing 0,992 seconds, work time recloser 1 1,127 seconds
and work time recloser 2 0,266 seconds. In short circuit interruption one phase to
ground with current 1102,89 A, working time PMT Outgoing 1,282 seconds, work
time recloser 1 0,758 seconds and work time recloser 2 1,423 seconds.