GE Industrial Solutions EntelliGuard 800–2000 A Frames, 240–600 Vac User’s Guide - Manual (Page 11)

EntelliGuard™ 800–2000 Ampere Power Circuit Breakers
Chapter2. Breaker Installation and Removal
3
2.1 Introduction
EntelliGuard circuit breakers are installed in GE
Entellisys™ Low-Voltage Switchgear. Draw-out
construction permits activation of a new feeder, allows
rapid replacement of a circuit breaker, and facilitates
inspection and maintenance of the breaker with no need
to deenergize the entire switchgear lineup. EntelliGuard
breakers are used exclusively with the EntelliGuard
Messenger™.
2.2 Installing the Breaker
Use the following procedure to install the draw-out
breaker into its cubicle, as illustrated in Figure 2.
1. Before lifting a breaker to its intended compartment
location, observe the following precautions:
• Check the compartment to ensure that it is free of
foreign objects.
• Verify that the breaker is the correct type for that
compartment.
• Ensure that the breaker is OPEN .
• Apply a thin coat of Lubricant D6A15A1
(MobilGrease 28, catalog number 193A1751P1) to
the breaker’s primary disconnects.
• Insert the racking handle and rotate it fully coun-
terclockwise to ensure that the racking cams on
the breaker are correctly positioned for initial
engagement with the pins in the breaker cubicle.
The position indicator on the front of the breaker
should show DISC .
2. Attach the Lifting Bracket (catalog number
0324B4551G1) by locating the hooks in the slots on
the side of the breaker and on the closing spring
anchor pin.
3. Pull the rails all the way out to their withdrawn posi-
tion.
4. Slowly lower the breaker onto the rails so that the
grooves in the rollers on the side of the breaker
align with the rails.
5. Push the breaker into the compartment until it
reaches the stops. This is the Disconnect position
(as shown by the legend DISC on the draw-out posi-
tion indicator). Check to ensure that the secondary
disconnect block on the breaker is aligned and is
beginning to engage properly with the mating
disconnect block in the compartment. At this point
the racking arms are positioned to engage the fixed
racking pins in the compartment and are ready to
begin the racking motion. Push the rails back into
the compartment.
6. Close the compartment door. Push the OPEN
button and slide the racking screw access door to
the right, exposing the racking screw.
7. Engage the Remote Racker accessory (WPEGRRLV)
or the Racking Handle (0324B4721G001) with the
racking screw. Rotate the screw clockwise using
either the Remote Racker or the Racking Handle
through the Test position, until the racking screw
comes to a solid stop. The breaker is now in the
Connected position, as shown by the legend CONN
on the position indicator flag. Note that a loud click
will be heard as the spring-loaded secondary
disconnect detent releases as the breaker moves
beyond the TEST position.
8. Depress the red OPEN button to close the racking
screw access door to permit breaker closing.
2.3 Removing the Breaker
Use the following procedure to remove the draw-out
breaker from its cubicle:
1. With the compartment door closed and latched,
open the breaker.
2. Push the OPEN button and slide the racking screw
access door to the right, exposing the racking screw.
3. Engage the Remote Racker accessory or the Racking
Handle with the racking screw. Rotate the screw
counterclockwise using either the Remote Racker or
the Racking Handle until the breaker travels from
the Connected position through the Test position
(as indicated by the legends CONN and TEST ,
respectively, on the draw-out position indicator)
and comes to a solid stop in the Disconnected
position (as indicated by the legend DISC on the
position indicator). At this point, the primary and
secondary disconnects are disengaged.
4. Open the compartment door. Pull out the rails,
then pull the breaker out to the withdrawn position
at the track travel limit
5. Verify that the indicators on the front of the breaker
show that the springs are DISCHARGED and the
breaker is OPEN .
6. Attach the Lifting Bracket by locating the hooks in
the slots on the side of the breaker and on the clos-
ing spring anchor pin. Raise the breaker until its
mounting wheels clear the rails.
7. Push the rails back into the compartment, then
move the breaker forward until the primary discon-
nects clear the compartment. Lower the breaker
onto a flat surface free of protrusions that could
damage the breaker’s internal parts. Close the com-
partment door.
8. Place the draw-out mechanism in the Connect posi-
tion to deactivate the interlocks that would other-
wise prevent the breaker mechanism or contacts
from closing. Engage the Racking Handle to the
racking screw and turn it clockwise until it stops, as
indicated by the legend CONN on the position indi-
cator.
2.4 Testing the Breaker
The breaker can be operated without energizing the load
when it is in the TEST position. Using the Racking Handle
or Remote Racker, move the breaker from the CONN or