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Auto-Recloser (ARCL) Measurements Menu
Auto-Recloser
(ARCL)
Measurements Menu
is intended
to be used by statistical and diagnostic means; therefor
all values displayed on the menu can be reset when
needed. E.g., pressing S3 (Reset) button while at the
menu shown on the top picture will reset the
Total
Cycle
s measurement value. This action is applicable for
all measurements on the menu.
The measurements available on the menu are
described below.
Total Cycles Measurement
This measurement is the summation of the values of
1
st
, 2
nd
, 3
rd
and 4
th
cycle measurements and represents
the total number of CB closing commands generated by
the auto-recloser function.
1
st
, 2
nd
, 3
rd
and 4
th
Cycle Measurements
These values give the total CB closing commands
generated by the auto-reclose function for each of the
cycles.
ARCL Blocks Measurement
This measurement displays the total number of the
instances that auto-recloser is blocked.
Having examined the explanations above, the following example tries to figure the behavior of the
ARCL
(Auto-Recloser)
Measurements Menu
when an auto-recloser session is completed. The example
below is given presuming that the CPM 310 G unit is configured to make two auto-reclose shots when
the CB is tripped by I>> function.
1. When the CB is tripped by the I>> function, the auto-recloser would conduct a reclose shot.
2. If the failure is detected again, the CB will be tripped by the I>> function again, and the
auto-recloser will conduct a second reclose shot.
3. If the failure is detected for the third time, the CB will be tripped and the auto-recloser will be
blocked.
For a scenario as above, formerly reset measurements will read as following:
Total Cycles 00002
1
st
Cycle 00001
2
nd
Cycle 00001
3
rd
Cycle 00000
4
th
Cycle 00000
ARCL Blocks 00001
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