Description
9229 9923 176 0B 29
2013-09-09
Switching times
Fig. 32 Switching times
Closing time = period between starting (command) of the closing movement and
the moment of contact touch in all poles.
Opening time = period between starting (command) of the opening movement and
opening of the last pole.
Arcing time = period from the start of the first arc to extinction of the arcs in all poles.
Break-time = period between starting (command) of the opening movement and
extinction of the arc in the last pole to become extinct (= opening time + arcing time).
Close/Open time = period in an OPEN/CLOSE cycle between the moment of con-
tact touch in the first pole during closing and the time when contact touch has been
cancelled in all poles during subsequent opening.
Dead-time = period from the end of the current flow in all poles up to the start of cur-
rent flow in the first pole.
Closing time < 75 ms
Opening time
1st shunt release (Y1) < 60 ms
2nd and 3rd release (Y2, Y4, Y6, Y7) < 55 ms
Arcing time < 15 ms
Break time
1st shunt release (Y1) < 75 ms
2nd and 3rd release (Y2, Y4, Y6, Y7) < 70 ms
Dead time 300 ms
Close/Open time
1st shunt release (Y1) < 90 ms
2nd and 3rd release (Y2, Y4, Y6, Y7) < 70 ms
Minimum command duration
Closing solenoid (Y9) 45 ms
1st shunt release (Y1) 40 ms
2nd and 3rd release (Y2, Y4, Y6, Y7) 20 ms
Shortest pulse time for breaker tripping signal
1st shunt release (Y1) > 15 ms
2nd and 3rd release (Y2, Y4, Y6, Y7) > 10 ms
Charging time if actuated electrically (M1) < 15 s
Synchronous operation error between the poles ≤ 2 ms
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