GE Industrial Solutions BreakMaster Load Interrupter Switch - Manual (Page 17)

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5.3 Shunt Trip Operating Guidelines
1. Close the switch using the operating handle
2. Rotate operating handle down until it stops (About 130 Deg. downwards). Switch is now “Armed” and is “Set
to trip.”
3. Remove and store the operating handle
4. Switch may be tripped “Open” by pulling the manual trip knob or electrically with the trip solenoid. Exercise
caution and keep clear of the switchblades.
.
To gain access to interior:
• Pull manual trip knob and turn Key-1 above knob. Switch is now tripped and Key-1 is released.
• Move the switch operating handle to full down position. Insert Key-1 into lock above operating handle and
turn both Key-1 and Key-2. Switch is locked open. Key-2 is released.
• Insert Key-2 into lock on door and turn to unlock door.
• Reverse sequence to close the switch.
5.4 Motor Operator
The motor operator utilizes a powerful direct drive motor assembly to charge the latching spring mechanism,
which opens and closes the interrupter switch, not the electric drive. Due to the high level of torque generated
by this drive assembly, please read all instructions and carefully follow the sequence to prevent physical damage
to the drive unit, interrupter switch or cubicle. If, after reading these instructions, you still have questions, please
contact GE prior to beginning this procedure.
The sequence of operation as outlined in this instruction book is based on a “Typical” motor operated drive
assembly. Based on particular application requirements there may be internal control modifications not shown
in the “typical” operation sequence. The terminal designations for the major components, such as the microswitches,
motor, reversing contactor, etc., are standard with GE and should not change. Please compare the standard
drawing for the appropriate control voltage with the wiring schematic shipped with the unit. This should be
done prior to beginning any work.
A key lock containing a microswitch retains the switch handle. Placing the handle in the lock and rotating the
key prevents removing both handle and key. The microswitch is then closed to complete the motor control
power circuit.
CAUTION
Do not operate until all adjustments as described in the “adjustments” section
are complete.
!
CAUTION
Do not attempt to bypass the microswitch by removing the handle and
placing it in the operating mechanism. To do so will allow the motor to operate
and rotate the handle. Serious injury could occur.
!
WARNING
This switch contains a stored energy mechanism. Keep all parts of body clear of
switchblades. Operation of either manual trip knob or solenoid will automatically open
the switch with great force. Allow only qualified persons access to switch interior.
!
BreakMaster Load Interrupter Switch