Operating The Make-Proof Busbar Earthing Switch; Control Elements And Indicators - Siemens 8DA10 Series Installation And Operating Instructions Manual

861-9601.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • Revision 11
38

Operating the make-proof busbar earthing switch

38.1

Control elements and indicators

Basic scheme for the busbar earthing switch
Fig. 204: Manual operating mechanism
① Additional compartment for
the operating mechanism
② Position indicator
The busbar earthing switch is equipped with a manual high-speed closing facility for make-
proof earthing of the busbar.
The cover of the actuating opening is interlocked electromechanically. Optionally, the control
gate can be padlocked in one of the two switch positions.
Hazardous voltages and high currents
Can cause injury or property damage.
Repeated switching under load impairs the function of the busbar earthing switch.
➭ Observe the Five Safety Rules (see page 7, "General instructions").
➭ Disconnect the incoming and outgoing feeders in all panels.
Damage to the busbar earthing switch
The control gate can only be moved for a switching operation that is permissible at this
moment.
➭ Perform only a permissible switching operation in accordance with the switch position of
the position indicator.
Damage to the busbar earthing switch
A switching operation once started must be completed totally. Turning back the
operating lever is blocked. The operating lever cannot be removed at intermediate
positions.
➭ Do not remove the operating lever by force at intermediate positions.
➭ Do not turn back the operating lever by force.
Fig. 205: Operating lever
③ Actuating opening
④ Operating spindle
CAUTION
NOTICE
NOTICE
Operation
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