Distribution Recloser Timing
Distribution Recloser Timing
(OP)
What are some of the dead times people are using for reclosers? For example, we are using 0.5, 1.0, 5.0 seconds.
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Distribution Recloser Timing
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RE: Distribution Recloser Timing
RE: Distribution Recloser Timing
This is an application on overhead distribution system (4 wire multi-grounded) 4160/2400. The reclosers are being installed to protect the three phase backbone while all side taps are fused. The recloser's trip curve is set to allow the side tap fuses to clear without affected the main line.
Some discussion has occured on what to set the dead times between reclosing. Right now we're set as follows:
Fault - open wait 0.5 secs, reclose
still faulted - open wait 1.0 secs, reclose
still faulted - open wait 5.0 secs, reclose
still faulted - open and lockout
I was wondering what other utilities are using for dead times?
Thanks for replying
wbd
RE: Distribution Recloser Timing
Inst, 2.0, 2.0
2.0, 2.0, 2.0
2.0, 2.0, 15.0
RE: Distribution Recloser Timing
The upstream protection is a fuse (k link) to back up the recloser in case of failure. The recloser TCC fits in between the side tap fuse curves and the backup fuse curves. The recloser is looking at the 3 phase backbone and set to give the side tap fuses time to clear any side tap faults.
wbd