Internal Electrical Accessories - Eaton CM52 Instruction Booklet

Instruction Booklet IB 52-01-TE
Effective October 2010
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is wired to the harness through insulated fast-on
terminals and the CT molded frame is keyed so it
can only be positioned one way into the breaker.
Spring Release – The spring release is a
standard devi ce on the CM52 Network Protector
Circuit Breaker.
breaker when its coil is energi zed by voltage
input. The closing spring must already be
charged for the device to work.
On spring-closed break ers, the spring rel ease is
automatically energized during th e spring
charging cycl e.
On stored-en ergy breakers, the spring energy
will be stored until the MPCV relay calls fo r a
CLOSE, whereby the sp ring releas e coil will be
energized permitting the closing springs to close
the breaker main contacts.
Fig.14 Removing Spring Release
Pulling upward on locking tap, sliding device
forward and removing from the auxiliary deck
can remove the spring.
electrically connected through disconnect plugs.
IDM – CM52 Technical Specification
Indicating Diagnostic Module
This device located on the front o f the break er
provides voltage regulation and diagnostic
inform ation.
The IDM has self-diagnostic circuitry built into
the design to aid the
user in determining if a component should be
replaced. The LED
Effective 11/05/08 (super cedes 11/19/03) IB 52-01-TE
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EATON COrPOrATION www.eaton.com
It remotely closes the circuit
Each device is
Instructions for the Eaton Type CM52
Network Protectors 800 to 4500 Amperes
indicators are described below.
MOTOR ENABLED (Red LED)
•
Indicates the supply voltage is normal and
the motor circuit is operable.
POWER ON (Yellow LED)
•
Indicates the presence of normal power
input to the IDM.
MOTOR OK (Yellow LED)
•
Indicates the motor is healthy.
SPRING RELEASE OK (Yellow LED)
•
Indicates a healthy spring releas e.
TRIP ACTUATOR OK (Yellow LED)
•
Indicates the IDM trip portion of the circuit
is healthy and is ready to implement a trip, if
trip conditions should arise.
Fig.15 Indicating Diagnostic Module (IDM)
4.7 INTERNAL ELECTRICAL
ACCESSORIES
Aux iliary Switch – An auxiliary switch is an
optional device providing remote elect rical
indication if the circuit breaker is open or closed.
AUXILIARY SWITCH LAYOUT
Each CM52, as standard, has two Auxiliary
Switch blocks. These blocks are located behind
and to the left of the Spring Release device, but
mounted on the accessory plat form. The far left
rear position of the Auxiliary Switch (position
A) has breaker only contacts. As standard, the
customer used Auxiliary Switch is located in the
front right hand position (position D).
The Auxiliary Switch wiring colors indicate:
Black=common, NO=yellow, NC=blue.
Each standard CM52 cont ains 3 N.O. auxiliary
switches and 3 N.C. Auxiliary Switch spare for
the customers use.
IB -52-01-TE
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