500-8067.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DJH • Revision 05 93/121
Operation
18 Operating the panel with switch-fuse combination
This chapter describes the manual operation of panels with switch-fuse combination, such as
the transformer feeder (panel type T).
Motor operating
mechanism (option)
To perform the CLOSING and OPENING operations, the panels can be equipped with a motor
operating mechanism. The use of the motor operating mechanism is described in the circuit
documentation.
Manual switching operations are also possible with motor operating mechanism. If the control
gate is operated in order to perform a switching operation, electrical switching commands are
suppressed.
Charging the spring
energy store with motor
operating mechanism
If the spring-operated/stored-energy mechanism is equipped with a motor operating
mechanism (option), the operating spring is charged automatically after applying auxiliary
voltage.
Control board for switch-fuse combination (example: transformer feeder)
DANGER
Risk of injury due to autonomously rotating operating lever. If the test fuse trips the
transformer switch and the operating lever is still inserted in the actuating opening, the
operating lever is turned quickly.
➭ Remove the operating lever after every switching operation.
NOTE
If the operating spring is charged with the motor operating mechanism and the auxiliary
voltage fails, the operating mechanism returns to the initial situation autonomously.
➭ Switch the auxiliary voltage on again; then, the switching process can be repeated.
①
Ready-for-service indicator
②
ON pushbutton
③
Control gate / locking device
④
Padlock (option)
⑤
Actuating opening for earthing switch
⑥
Position indicator for earthing switch
⑦
Position indicator for switch-disconnector
⑧
OFF pushbutton
⑨
Actuating opening for "spring charging"
⑩
"Spring charged" indicator
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