Emergency Release Of The Interlock With Solenoids At The Three-Position Disconnector - Siemens 8DB10 Installation And Operating Instructions Manual

Operation
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37.7 Emergency release of the interlock with solenoids at
the three-position disconnector
If the switchgear is equipped with a solenoid interlocking, the control gate is blocked
if there is no auxiliary voltage available. In case of emergency, this interlock can be bypassed
as follows:
DANGER
If the interlocking provided by the control gate is eliminated, switching operations are possible
that can cause an arc fault which will endanger the life of the people present and damage the
switchgear.
➭ Do only eliminate the interlocking of the control gate to push the control gate to the center
position.
➭ Do not perform switching operations.
➭ Use a screwdriver that fits the hole diameter of the solenoid openings.
To push the control gate from center position to right position:
➭ Remove the left-hand plastic split rivet.
➭ Insert the screwdriver through the left-hand opening and push the solenoid back.
➭ Push the control gate to the right.
✔ The left-hand solenoid is released again, blocking further movements.
Fig. 182: Pushing the control gate to the right position
To push the control gate from center position to left position:
➭ Remove the right-hand dummy plug.
➭ Insert the screwdriver through the right-hand opening and push the solenoid back.
➭ Push the control gate to the left.
✔ The right-hand solenoid is released again, blocking further movements.
Fig. 183: Pushing the control gate to the left position
Revision 06 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • 864-5091.9