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Switching Times - Siemens 3AK Operating Instructions Manual

Vacuum circuit-breaker module.
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2013-09-09

Switching times

Closing time
Opening time
1st shunt release
2nd and 3rd release
Arcing time
Break time
1st shunt release
2nd and 3rd release
Dead time
Close/Open time
1st shunt release
2nd and 3rd release
Minimum command duration
Closing solenoid
1st shunt release
2nd and 3rd release
Shortest pulse time for breaker tripping signal
1st shunt release
2nd and 3rd release
Charging time if actuated electrically
Synchronous operation error between the poles
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.
Description
(Y1)
(Y2, Y4, Y6, Y7)
(Y1)
(Y2, Y4, Y6, Y7)
(Y1)
(Y2, Y4, Y6, Y7)
(Y9)
(Y1)
(Y2, Y4, Y6, Y7)
(Y1)
(Y2, Y4, Y6, Y7)
(M1)
< 75 ms
< 60 ms
< 55 ms
< 15 ms
< 75 ms
< 70 ms
300 ms
< 90 ms
< 70 ms
45 ms
40 ms
20 ms
> 15 ms
> 10 ms
< 15 s
≤ 2 ms
29

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