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R E L I A G E A R LV M C C LO W V O LTA G E M OTO R C O N T R O L C E N T E R
30
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Installing and removing circuit breakers
67 Breaker installation
General
Inspection and preparation of circuit breakers
Before installing, operating, or removing a circuit
breaker, refer to Emax 2 & Power Breaker II
Installation, operation and maintenance
instructions for preparation, inspection, and test.
Check thoroughly for damaged or loose parts and
for any dirt or foreign matter which may be in the
breaker.
Circuit breaker installation
To install a circuit breaker, proceed as follows:
1. Before installing check the contact areas on each
primary disconnect bar or cluster of fingers for
foreign matter that may have accumulated. Clean
these areas if necessary. Be sure that a thin film
of lubricating grease covers the contact areas
before putting a breaker in the compartment.
2. Check to see that the breakers match their
respective compartments. Each breaker is
assigned a part or mark number. This number is
shown on the breaker sheets of the summary, the
front view drawings, and on the identification
card on the breaker shipping carton. The Emax 2
Breaker may also be identified using the 20 digit
catalog number.
3. To locate the breaker in the proper compartment,
refer to the breaker location list on the front
view drawing. Find the proper breaker by the
identification card on the breaker carton. All
identical breakers will have the same mark and
catalog number.
Installing the circuit breakers
Prior to installation
Prior to lifting a breaker to its intended
compartment location, observe the following
precautions:
Precautions
1. Check the compartment to ensure that it is free
of foreign objects
2. Verify that the breaker is the correct type for that
compartment.
3. Ensure that the breaker is OPEN.
4. Apply a thin fresh coat of lubricating grease to
the breaker's primary disconnects.
5. Ensure that the position indicator on the circuit
breaker is in the DISCONNECTED position and is
correctly positioned for initial engagement. To
do this, open the racking handle door and insert
the racking handle and rotate it fully counter-
clockwise.
Installation procedures
To Install the Emax 2 circuit breaker, proceed as
follows:
1. Carefully place the breaker in front of the section
in which it is to be installed.
2. Open the breaker compartment door by rotating
the door latch assembly ¹/₄ turn clockwise.
3. Attach the lifting beam to the Emax 2 circuit
breaker's lifting plates as shown in Fig. 67. The
carabineers of the lifting beam should be
securely closed on the circuit breaker's lifting
plates.To locate the breaker in the proper
compartment, refer to the breaker location list
on the front view drawing. Find the proper
breaker by the identification card on the breaker
carton. All identical breakers will have the same
mark and catalog number.
3
4
5
6
1
Breaker lifting device hook
2
Lifting beam
3
E2.2 carabineer position (shown)
4
E4.2 carabineer position
5
Carabineers
6
Circuit breakers
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67
NOTICE
Note: E2.2 and E4.2 circuit breakers share a
common lifting beam. The lifting beam has two
unique positions for the carabineers to properly lift
each of these circuit breakers as detailed in Fig. 67.
1
2
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