WEG VBWC Series, Инструкция по установке, эксплуатации и обслуживанию

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Vacuum Circuit Breaker | 19
9.3 OPERATING SEQUENCE
The sequence of operating mechanism is as follows.
Closing operation started
Closing Spring Charging Time
(within 5sec.)
Control power source “ON”
Closing operation completed
Closing signal
Opening signal
Motor
ON
OFF
Charging
Discharging
Charging
Discharging
ON
OFF
ON
OFF
ON
OFF
Closing spring
Opening spring
Closing coil
Opening coil
Circuit break
Closing time Opening time
Opening operation
started
Opening
Operation
completed
Figure 9.5: Operating Sequence
9.4 OPERATING FREQUENCY
In order to keep the operating mechanism parts or components at the best service condition, please avoid any
unnecessary operation and also attend the followings.
„
Make a successive operation 10 operations with the minimum time interval (about 5sec.) required for
charging the closing spring.
(The 30 min. of time interval should be required at least after a successive operation);
„
Operate 20 times per an hour;
„
Operate 100 times per a day.
In case of requiring frequent switching operation or any severe operating duty under the dusty and polluted
environment, it needs to be added the frequency of periodic inspection or maintenance.