Operation
150/214 Revision 06 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • 864-5091.9
36.4 Recommendation for sealing the pushbuttons
Recommendation for
sealing/locking
36.5 Test operation without auxiliary voltage
On circuit-breakers with undervoltage release 3AX1103:
Perform the following actions to guarantee that the circuit-breaker is ready for operation:
➭ Charge the closing spring (see page 151, "Charging the closing spring manually").
➭ Operate the ON pushbutton in the circuit-breaker control board.
✔ The circuit-breaker is closed.
➭ Operate the OFF pushbutton in the circuit-breaker control board.
✔ The circuit-breaker is open.
➭ Shift the retaining screw of the striker from position A to B to activate
the undervoltage release.
ATTENTION
If you close manually, all electrical and mechanical interlocks are ineffective.
➭ To guarantee safe operation of the interlocks: Seal/lock the pushbuttons (see table below).
Panel types Sealing
Incoming or outgoing feeder panels ON pushbutton
Bus sectionalizer panels ON pushbutton and OFF pushbutton
ATTENTION
If the retaining screw of the striker is not shifted back from position A to position B after
the test operation without auxiliary voltage, the undervoltage release will not function.
➭ After the test operation without auxiliary voltage, shift the retaining screw of the striker
back from position A to position B.
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