Installing And Removing Circuit - GE ABB ReliaGear LV SG Installation, Operation And Maintenance Manual

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
Installing and removing
circuit breakers
General
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Rejection pin mounting
Inspection and preparation of circuit breakers
used in cradle
Before installing, operating, or removing a
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circuit breaker, refer to
Rejection pin mounting
preparation, inspection, and test. Check thoroughly
used on Emax 2
circuit breaker
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 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.
1SDH001000R0002 for
Rejection feature
Draw-out breakers of the same type and
ratings are interchangeable in their equipment
compartments. Draw-out breakers of different
type or short-circuit rating are intentionally made
noninterchangeable to prevent inserting the wrong
type breaker into a draw-out compartment. Unique
"rejection hardware" is affixed to each breaker and
its cradle. When the wrong type breaker is inserted
into a compartment, the pins on the breaker and in
the cradle interfere, thus preventing the wrong
breaker from being racked onto the primary stabs.
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1. Cradle pins (not shown)
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1
1. Breaker pins (shown)
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