GE ABB ReliaGear LV SG Installation, Operation And Maintenance Manual page 47

I N S TA L L AT I O N , O P E R AT I O N S A N D M A I N T E N A N C E M A N U A L
—
5. Engage the cradle rail release levers and
81
withdraw the rails to their stop.
Alignment of Emax
2 circuit breaker
with cradle
6. Slowly lower and guide the circuit breaker to
—
align with the breaker compartment. Prior to
82
Using breaker lifting
lowering the circuit breaker onto the rails, be sure
device and lifting
the breaker racking plate (see Figure 81), are
beam to raise orlower
circuit breaker
aligned with the cradle draw-out rails.
—
83
Engage the racking shaft
with the racking handle
1
2
1. Breaker racking plate
2. Cradle Draw-out Rails
—
81
7. With both sides of the circuit breaker aligned
with the grooves in the cradle, slowly lower and
guide the breaker to allow the racking plates on
both sides to align with the rails. See Figure 82.
Remove the lifting beam and the breaker lifting
plates. The breaker is now positioned on the
draw-out rails.
1
2
1. Switchgear Breaker Lifting Device
2. Lifting Beam
—
82
8. Move the breaker into the compartment to the
DISCONNECT position. If an incorrect breaker
has been installed, the interference pins on
the breaker will interfere with the rejection
pins in the compartment prior to reaching the
disconnect position.
9. Slide rails back into compartment. Close the
compartment door and rotate latch ¼ turn
counter-clockwise.
10. Engage the racking handle by pressing the
"Push to operate" button to open the racking
shaft door, then insert the manual racking
handle.
11. Rotate the handle clockwise as far as it will go.
As you rotate the handle clockwise, the breaker
will travel from the DISCONNECT position to the
TEST position. The Emax 2 racking mechanism
provides a positive position interlock which
disables the racking mechanism at each of the
positions (CONNECT, TEST and DISCONNECT).
Therefore, once reaching the TEST position, the
racking mechanism will be locked out; to
proceed to CONNECT, again press the "Push to
operate" button and resume turning the racking
handle as far as it will go. The breaker position
can be seen on the indicator, located on the
circuit breaker front cover.
1
2
3
1. "Push to operate" racking mechanism button
2. Breaker position indicator
3. Racking handle
—
83
46