Operation
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Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • 861-9601.9
36.4
Test operation
Without auxiliary voltage
Perform the following actions to verify that the circuit-breaker is ready for operation:
➭ Charge the closing spring (see page 157, "Charging the closing spring manually").
➭ Operate the ON pushbutton in the mechanical control board.
✔ The circuit-breaker is closed.
➭ Operate the OFF pushbutton in the mechanical control board.
✔ The circuit-breaker is open.
On circuit-breakers with undervoltage release 3AX1103:
➭ Shift the retaining screw of the striker from position A to B to activate the undervoltage
release.
With auxiliary voltage
(motor operating
mechanism)
➭ Switch on the supply voltage.
✔ The motor operating mechanism starts up and charges the closing spring.
➭ Check whether the "spring charged" indication appears.
➭ Close the circuit-breaker.
✔ The closing spring is recharged automatically.
➭ Check whether the position indication "circuit-breaker CLOSED" appears.
➭ Open the circuit-breaker.
➭ Check whether the position indication "circuit-breaker OPEN" appears.
NOTICE
Blocked undervoltage release
Can cause property damage.
The undervoltage release will not function if its retaining bolt is inserted in position A. After test
operation without auxiliary voltage, the undervoltage release must be activated.
➭ Remove the retaining bolt from position A and insert it in position B.