Operating The Circuit-Breaker; Closing The Circuit-Breaker Manually; Opening The Circuit-Breaker Manually; Emergency Release Of The Circuit-Breaker (With Locking Solenoid -Y16) - Siemens 8DA10 Series Installation And Operating Instructions Manual

861-9601.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • Revision 11
36

Operating the circuit-breaker

Do not lock the circuit-breaker in OPEN position.
Closing the circuit-breaker while being locked in OPEN position will damage the locking
device.
➭ Operate and lock the circuit-breaker locking device only under the following conditions:
- The circuit-breaker is in CLOSED position.
- The three-position disconnector is in READY-TO-EARTH position.
➭ For the locking device, use a padlock with a shackle diameter of min. 6 mm.
36.1

Closing the circuit-breaker manually

If the control voltage fails, the circuit-breaker can only be closed mechanically by hand.
Preconditions
• "Feeder earthed" locking device is open
• Closing spring is charged
➭ Operate the ON pushbutton in the circuit-breaker control board.
✔ The position indicator changes to "I" position. The circuit-breaker is closed.
36.2

Opening the circuit-breaker manually

If the control voltage fails, the circuit-breaker can only be opened mechanically by hand.
Preconditions
• "Feeder earthed" locking device is open
➭ Operate the OFF pushbutton in the circuit-breaker control board.
✔ The circuit-breaker is open.
36.3

Emergency release of the circuit-breaker (with locking solenoid -Y16)

Possible interlocks of the "feeder earthed" function between circuit-breaker and three-position
disconnector:
• In EARTHED position of the three-position disconnector (with locking solenoid -Y16).
• In all switch positions of the three-position disconnector.
If the auxiliary voltage fails, the "feeder earthed" locking device is blocked.
➭ Operate emergency release.
Fig. 190: Position of the release opening
at the circuit-breaker front cover
➭ Insert a suitable auxiliary means (e.g. a very small screwdriver) in the release opening as far
as it will go, and push softly to the left. Push the lever of the locking device upwards and
remove the auxiliary means.
Fig. 191: Operating the emergency release
NOTICE
① "Feeder earthed" locking device
② Locking device
③ Release opening
④
"Feeder open" locking device
Operation
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