Arcl Measurements - DEMA CPM 310 G User Manual

1. ARCL (Auto-recloser) Measurements window displays the cumulative and individual values of reclosing
cycles, and the total number of auto-recloser blockings. As seen on the picture above; the left column gives
the explanations of the monitors to their right (e.g. Total cycle), the middle column comprises of the 5-digit
monitors, and the column at the far right contains the buttons to reset each of the monitors.

Total Cycles: Total ARCL cycles numerator sums and displays the values of 1

Individual Cycle Numerators (1
number of each successful cycle.

ARCL Block: Auto-recloser is subject to be blocking under some predefined conditions, e.g., permanent
failures, user intervention, CB charging spring failure, CB pole failure and CB trip / closing time errors.
After each of the auto-recloser blockings, the ARCL Block numerator records it onto its history to
create a cumulative statistic. □
NOTES

ARCL Cycle: An ARCL cycle comprises of 1 closing command. Tripping is not evaluated at ARCL
Measurements.

For the initiation of ARCL cycles, the ARCL settings must have been done so that an ARCL session is
triggered by the tripping function. The subject is explained in detail at the dedicated section ARCL
Settings.
Measurements » ARCL Measurements
st nd rd th
, 2 , 3 and 4 Cycles): These numerators watch and display the
- 143 -
st th
to 4 cycles.