Control Elements And Indicators Of The Circuit-Breaker; Control Elements And Indicators Of The Three-Position Disconnector - Siemens 8DA10 Series Installation And Operating Instructions Manual

Operation
Control board on
the switchgear front
Position indicator
at the rear
152/214
34.1

Control elements and indicators of the circuit-breaker

34.2

Control elements and indicators of the three-position disconnector

Fig. 183: Control board on the switchgear front
The manual switching operations DISCONNECTING or READY-TO-EARTH must be pre-selected
with the interrogation lever. The interrogation lever can only be operated if the associated
switching operation is permissible.
The position of the three-position disconnector is indicated both at the front and at the rear of
the switchgear. The position indicator at the rear is located on the side of the outermost
busbar housing, over the circuit-breaker housing.
Fig. 184: Position indicator at the rear
Switch positions
Three-position disconnector
OPEN
Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • 861-9601.9
① Opening for charging the closing spring manually
② ON pushbutton
③ OFF pushbutton
④
"Feeder earthed" locking device
⑤ Operations counter
⑥ Position indicator for circuit-breaker
⑦
"Closing spring charged / not charged" indicator
①
Interrogation lever
② Position indicator for three-position disconnector
(EARTHING/READY-TO-EARTH function)
③
Position indicator for circuit-breaker
④ Position indicator for three-position disconnector
(DISCONNECTING function)
⑤ Control gate
⑥
Actuating opening for disconnector
(DISCONNECTING function)
⑦ Actuating opening for earthing switch
(EARTHING/READY-TO-EARTH function)
Three-position disconnector
CLOSED
Three-position disconnector
READY-TO-EARTH