39
Note: Do not perform Spring Discharge Check if the circuit
breaker is in the CONNECT position. Open circuit breaker and
rack to the DISCONNECT position, and then perform the
Spring Discharge Check.
1. Assure that breaker is not in CONNECT position in cell.
2. Open control power disconnect (e.g., pull fuseholder or
open molded case circuit breaker).
3. Press red Trip pushbutton.
4. Press black Close pushbutton.
5. Again press red Trip pushbutton.
6. Verify Spring Condition Indicator shows DISCHARGED.
7. Verify Main Contact Status Indicator shows OPEN.
Removal from Cell in Indoor (if not on raised pad) and
Shelter-Clad Outdoor Switchgear
After performing the Spring Discharge Check (with control
power de-energized), remove the circuit breaker from its
switchgear cubicle.
1. Insert the racking crank on the racking screw on the front
of the breaker cell, and push in (see “Racking Crank
Engagement Procedure”). This action operates the racking
interlock latch. Figure 37 shows racking of a circuit breaker.
2. Rotate the racking crank counterclockwise until the break-
er is in the DISCONNECT position.
3. Release the breaker release latch and pull the circuit breaker
out from the DISCONNECT position. The breaker can now
be removed from cubicle.
4. The circuit breaker is now free to be rolled out on the floor
using the handles as shown in Figure 38. The wheels of
the circuit breaker are virtually at floor level (unless the
switchgear is installed on a raised pad), and one person
can easily handle the unit.
Figure 37. Racking of Circuit Breaker
Figure 38. Removal of Circuit Breaker
Circuit Breaker Position
Hazardous voltages and high-speed moving
parts.
Will cause death, severe personal injury or
property damage.
Read instruction manuals, observe safety
instructions, and use qualified personnel.
DANGER
1563-95
1573-95
Courtesy of NationalSwitchgear.com
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