Description
32/214
Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • 861-9601.9
Circuit-breaker panel,
disconnector panel
17.2
Vacuum circuit-breaker
Operating times
Number of operating
cycles
Closing time
The interval of time between the initiation (command) of the closing operation and
the instant when the contacts touch in all poles.
Opening time
The interval of time between the initiation (command) of the opening operation and
the instant when the contacts separate in all poles.
Arcing time
The interval of time from the first initiation of an arc and the instant of final arc extinction in
all poles.
Break time
The interval of time between the initiation (command) of the opening operation and
the instant of final arc extinction in the last-pole-to-clear (=opening time and arcing time).
Data of the switchgear panels (circuit-breaker panel, disconnector panel, bus sectionalizer, cable connection panel, metering panel)
Rated voltage U
r
kV
12
24
36
40.5
Rated normal current I
r
1
A
1250
A
1600
2
A
2000
A
2500
A
2750
A
3150
3
Rated short-time withstand current I
k
t
k
= 3 s
up to kA
40
50 Hz
Rated peak withstand current I
p
up to kA
100
Rated short-circuit making current I
ma
up to kA
100
60 Hz
Rated peak withstand current I
p
up to kA
104
Rated short-circuit making current I
ma
up to kA
104
Rated short-circuit breaking current I
sc
up to kA
40
Electrical endurance of vacuum circuit-
breakers
at rated normal current
Standard
10,000 operating cycles
Option
30,000 operating cycles
at rated short-circuit breaking current
50 breaking operations
Filling pressure (pressure values at
20 °C)
Rated filling level p
re
(absolute) for feeders
kPa
70/120
Minimum functional level p
me
(absolute)
kPa
50/100
1
Maximum permissible normal current dependent on ambient air temperature
2
1600 A not available for bus sectionalizer, cable connection panel, metering panel
3
3150 A with forced ventilation
Closing time
Closing solenoid
<95
ms
Opening time
1st shunt release
<65
ms
2nd shunt release
<55
ms
Undervoltage release
<55
ms
Arcing time
at 50 Hz
<15
ms
at 60 Hz
<12
ms
Break time
at 50 Hz
1st shunt release
<80
ms
2nd shunt release
<70
ms
Undervoltage release
<70
ms
Dead time
300
ms
Total charging time
<15
s
Currents
Number of
operating cycles
Maintenanc
e
Rated normal current
10000
without
30000 (option)
with
Short-circuit breaking current
50
without