Description
9229 0025 176 0A 33
2019-08-05
Switching times
Fig. 46 Switching times
Closing time = period between starting (command) of the closing movement and
the moment of contact with 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 ex-
tinction of the arc in the pole extinct last (= opening time + arcing time).
Close-open contact time = period in an OPEN/CLOSE operating cycle between
the moment of contact touch in the first pole during closing and the time when con-
tact 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 the
current flow in the first pole.
Circuit diagrams
The circuit diagrams for the vacuum circuit-breaker are compiled depending on your
order.
The corresponding circuit diagram book can also be downloaded from the following
URL on the internet: https://support.industry.siemens.com
Closing time ≤ 60 ms
Opening time
1st shunt release (-Y1) ≤ 30 ms
2nd/3rd release (-Y2 to -Y7) ≤ 45 ms
Arcing time < 15 ms
Break time
1st shunt release (-Y1) ≤ 45 ms
2nd/3rd release (-Y2 to -Y7) ≤ 60 ms
Dead time
Close-open contact time
1st shunt release (-Y1) ≤ 75 ms
2nd/3rd release (-Y2 to -Y7) ≤ 60 ms
Minimum command duration
Closing solenoid (-Y9) 45 ms
1st shunt release (-Y1) 40 ms
2nd/3rd release (-Y2 to -Y7) 20 ms
Shortest pulse time for circuit-breaker tripping signal (S6)
1st shunt release (-Y1) > 10 ms
2nd/3rd release (-Y2 to -Y7) > 6 ms
Charging time if actuated electrically (-M1) < 15 s
Synchronism error between the poles ≤ 2ms
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