Eaton C Series Manual

Contents
Description Page
1-0 Introduction ...........................2
2-0 Installation ............................3
Effective December 2011
Supersedes IL29C149A 07/98
Instruction Leaflet IL29C149B
Installation Instructions for Low Energy Shunt Trip for NDB, ND,
NDC, HND, NW, HNW, NWC Circuit Breakers, Series C Molded
Case Switches, and Motor Circuit Protectors (HMCP)

2
Instruction Leaflet IL29C149B
Effective December 2011
Installation Instructions for Low Energy ShuntTrip for NDB, ND,
NDC, HND, NW, HNW, NWC Circuit Breakers, Series C Molded
Case Switches, and Motor Circuit Protectors (HMCP)
EATON CORPORATION www.eaton.com
CONTACT WITH ENERGIZED EQUIPMENT CAN
RESULTIN DEATH, SEVERE PERSONAL INJURY,
OR SUBSTANTIAL PROPERTY DAMAGE. DO NOT
ATTEMPT TO INSTALL OR PERFORM MAINTE
-
NANCE ON EQUIPMENT WHILE IT IS ENERGIZED.
ALWAYS VERIFY THATNO VOLTAGE IS PRESENT
BEFOREPROCEEDING WITH THE TASK, AND
ALWAYS FOLLOW GENERALLY ACCEPTED SAFE
-
TY PROCEDURES.
THEEATON CORPORATION IS NOTLIABLE
FOR THEMISAPPLICATION OR MISINSTAL-
LATION OF ITS PRODUCTS.
The user is cautioned to observe all recommendations,
warningsandcautions relating to the safety of person
-
nel and equipment well as as general andlocal health
andsafety laws, codes andprocedures.
The recommendationsandinformation contained herein
are based on Eaton experience andjudgment, but
should not be considered to be all
- inclusive or covering
everyapplication or circumstance which mayarise. If
anyquestions arise, contact Eaton for further inform-
ation or instructions.
1 - 0 INTRODUCTION
General Information
The low energy shunt trip (LEST) is designed to inter -
face with a customerground fault detection system
(Figure 1-1). The LEST consists of an intermittent
rated solenoid with a plunger and a reset leverassem
-
bled to a plug - in module. The plug - in module is mount -
ed in slots in the top of the trip unit andoccupies the
accessory cavity in the circuit breaker frame. The reset
lever resets the LEST when the trip signal is removed
and the circuit breaker handle is moved to the reset
(extreme OFF) position.
The LEST is designed to trip the circuit breaker when a
100 microfarad capacitor charged to 28 Vdc is dis -
charged through the solenoid.
For this publication, the termcircuit breaker shall also
include molded caseswitch andmotor circuit protector.
Figure 1 1 - Low EnergyShunt Trip Installed in N - Frame
Circuit Breaker.
Depending on the model ordered, connections for the
LEST are in one of four forms. The standard wiring con
-
figuration is pigtail leads exiting the rear of the base
directly behind the LEST. Optionalconfigurations
include a terminal block mounted on the sameside of
the baseas the accessory, leads exiting the side of the
base where the accessory is mounted,andleads exiting
rear of the base on the side opposite the accessory.
The 18
- inch (457.2 mm) long pigtail leads arecolorcoded
for identification; identification labels areprovided for pig-
tail leadsand terminal block points. For allowable locat-
ions of all accessories, refer to Frame Book 29
- 1 04.
When the walking beam interlock is used with the
circuit breaker, the rear trough cannot be used for
accessory pigtail leads.
Thisinstruction leaflet (IL) gives detailed procedures for
installing the LEST.

3
Instruction Leaflet IL29C149B
Effective December 2011
Installation Instructions for Low Energy ShuntTrip for NDB, ND,
NDC, HND, NW, HNW, NWC Circuit Breakers, Series C Molded
Case Switches, and Motor Circuit Protectors (HMCP)
EATON CORPORATION www.eaton.com
2 - 0 INSTALLATION
The LEST can be field
- installed in ND, HND, NDC
andCNDCcircuitbreakers under UL File E64983.
The LEST can be field
- installed in NW,HNW,and
NWCcircuitbreakers.
The LEST is listed for factory installation under UL
File E7819.
Wherelocalcodesand standardspermit and UL list
-
ing is notrequired,internalaccessoriescanbefield
installed in sealedcircuitbreakers. In this case, UL
listingbecomesinvalid and the labelshould be
removed.
Beforeattempting to installtheLEST,check that the
catalognumber is correctas ordered and that the
rating of the accessorysatisfies job requirements.
The LEST, Shown in kit form in Figure 2 - 1, is installed in
the right or left accessory mounting cavity of a 2
- , 3 - , or
4
- pole circuit breaker, and in the left pole only of a cir -
cuit breaker with an NS (electronic) trip unit. A LEST
must be installed in the circuit breaker before the circuit
breaker is mounted in an electrical system. To install
the LEST, perform the following procedures:
Acircuitbreakerthat is mounted in an electrical
systemmustbe removed to installtheaccessory.
To ensurecorrect accessory installation,thecircuit
breakermust be placed on a horizontalsurface.
WARNING
Accessory
Identification
Nameplate
L
O
W
E
N
E
R
G
Y SHUNT TRIP
@ 250 MS
Connection
Label (Pigtail
Leads Shown)
LEST
Module with
Pigtail Leads
Figure 2 - 1 Low EnergyShunt Trip Kit.
Fornewcircuitbreakerinstallation,the tripunit
must be installed in circuitbreakerbeforeattempt
-
ing to install a LEST.
Switch circuit breaker to OFF position.
To install LEST, circuitbreakeroperatingmecha -
nismmust be in tripped position.
Moldedcaseswitch tripunitsarenotequippedwith
aPush
- to - Tripbutton.Formoldedcaseswitches,
omitstep
2 - 3.
THE VOLTAGES INENERGIZED EQUIPMENT CAN
CAUSE DEATHOR SEVERE PERSONAL INJURY.
BEFOREREMOVING A CIRCUIT BREAKER
INSTALLEDIN ANELECTRICALSYSTEM,MAKE
SURE THE CIRCUIT BREAKER ISSWITCHED TO
THE
OFF POSITION ANDTHERE IS NO VOLTAGE
PRESENT WHERE WORK IS TO BE PERFORMED.
SPECIAL ATTENTIONSHOULDBE PAIDTO
REVERSE FEED APPLICATIONSTO ENSURE NO
VOLTAGE ISPRESENT.
2 - 2. Disconnect and remove circuit breaker from
installation and terminal connections.
Press PUSH
- TO - TRIP button to trip operating
mechanism and check handle moves to trip
position with white colored indicator visible in
escutcheon window.
2 - 4. Remove cover screws and cover.
2 - 3.
2
- 1.
0.45 AMPS
28 VOLTS DC
1494D49G03
LST5LB
Intermediate
Plunger
Plug-In

4
Instruction Leaflet IL29C149B
Effective December 2011
Installation Instructions for Low Energy ShuntTrip for NDB, ND,
NDC, HND, NW, HNW, NWC Circuit Breakers, Series C Molded
Case Switches, and Motor Circuit Protectors (HMCP)
EATON CORPORATION www.eaton.com
2 - 5. Push intermediate plunger supplied with LEST
in one hole to trip the molded caseswitch.
Remove plunger to prevent it falling out of
recessed hole in trip unit andinto molded case
switch mechanism.
2 - 6. Remove interphase barrier between center pole
andpole in which accessory is to be mounted
and flip (Figure 2-2).
Install LEST as described in the following steps
(Figure 2-3):
CAUTION
IF LEST IS REMOVED FROM CIRCUIT BREAKER,
INTERMEDIATE PLUNGER MUST ALSO BE
REMOVED. FAILURE TO REMOVE THE INTERMEDI
-
ATE PLUNGER CAN RESULT IN EQUIPMENT DAM -
AGE.
a. Remove barrier from trip unit accessory
mounting slots in pole being used for acces-
Figure 2 - 2 Interphase Barrier Replacementand
sory (see Figure 2-3).
Intermediate Plunger Positioning.
b. Position intermediate plunger in trip unit
(Figure 2-3).
c. Press intermediate plunger into recess in
trip unit, andhold in position. Slide LEST
plug
- in module into slots (Figure 2-3) until
retaining clip snaps into trip unit. For termi
-
nalblock assemblies, slide terminal block
into mounting slot on side of base as plug
- in
module is properly positioned.
CAUTION
LEADS SHOULD BE FORMEDAND ROUTED TO
CLEAR ALLMOVING PARTSWHEN ACCESSORYIS
PROPERLY INSTALLED. PIGTAIL WIRES COULD
BE DAMAGED IF IN CONTACT WITH MOVING
PARTS.
Installed Low
For a LEST havingrear or opposite - sideexiting pig -
tailleads,threadleadsthroughcentertrough in side
of base before attempting to insert the mounting
bracket. Pigtail leadsexiting in thismannershould
Figure 2 - 3 Installing Intermediate Plunger and Shunt
be easedthrough trough as mountingbracket is
Trip.

5
Instruction Leaflet IL29C149B
Effective December 2011
Installation Instructions for Low Energy ShuntTrip for NDB, ND,
NDC, HND, NW, HNW, NWC Circuit Breakers, Series C Molded
Case Switches, and Motor Circuit Protectors (HMCP)
EATON CORPORATION www.eaton.com
inserted into trip unit retaining slots. Use center
troughalso forleadsexitingtheside of thecircuit
breaker.
2 - 8. Route wiring to meet installation requirements
(Figure 2-4). If required,complete routing of
leads to opposite side through rear window
trough.
CONTACT WITHMOVING PARTS CAN CAUSE PER -
SONAL INJURY. WHEN CHECKING ACCESSORY,
DO NOT PUT FINGERS NEAR MOVING PARTS
INSIDE CIRCUIT BREAKER CASE. SPRINGS
CAUSE INTERNALPARTS TO MOVE QUICKLY AND
WITH FORCE.
Perform mechanical check of LEST after instal -
lation:
a. With the circuit breaker still electrically iso
-
lated, reset the circuit breaker.
CAUTION
RearLeads
Opposite
- Sde
LeadsLeads
THE SOLENOID PLUNGER ISHELDIN THE SEATED
POSITION BY A PERMANENT MAGNET. LIGHT
Figure 2 - 4 Accessory WiringOptions.
PRESSURE, NOT TO EXCEED TOW POUNDS,
SHOULD BE USED TO MOVE PLUNGER FROM
SEATED POSITION
b. Position a small flat - blade screwdriver
(Figure 2-5) under the head of the solenoid
plunger. Pry the plunger free from the seat
-
ed positionand check the circuit breaker
trips.
c. Reset circuit breaker handle and check that
handlearm moves the reset lever,and that
solenoid plunger is pushedinto solenoid
andheld by magnet.
d. If mechanicalcheck does not trip circuit
breaker,see if LEST and intermediate
plunger are correctly installed. If LEST and
intermediate plunger appear to be properly
installedand problem persists, contact
Eaton.
Figure 2 - 5 TestingOperationof SolenoidPlunger.

6
Instruction Leaflet IL29C149B
Effective December 2011
Installation Instructions for Low Energy ShuntTrip for NDB, ND,
NDC, HND, NW, HNW, NWC Circuit Breakers, Series C Molded
Case Switches, and Motor Circuit Protectors (HMCP)
EATON CORPORATION www.eaton.com
CAUTION
WHENINSTALLING CIRCUIT BREAKER MAIN
COVER,MAKE SURE THATALL INTERNAL PARTS
ARE IN PLACE:
SLIDING HANDLE BARRIER IS POSITIONED SO
THAT THE HANDLE OPENING IS ALIGNED WITH
THEHANDLE.
ALL LEADS ARE CLEAR OF THE COVER
2 - 10.With circuit breaker handle in TRIPPED position
and accessory pigtail leads (if used) routed as
required, install circuit breaker covers. Secure
with pan
- head screws. Torque to 22 - 24 Ib - in
(2.49
- 2.72 Nm).
2
- 1 Remove and discard UL listing label on NDB
circuit breakers only.
2
- 12.Place accessory labels (supplied with kit) on cir
-
cuit breaker (See Figure 2-6).
Figure 2 - 6 PreferredMounting Locations for Accessory
Nameplate Labels
CAUTION
SOLENOID IS RATED FOR INTERMITTENTDUTY.
CONTINUOUS APPLICATION OF 24 VDCDAM
-
AGE THESOLENOID.
2 - 13.Electrical check. Where practical and after tak
-
ing all necessary safety precautions, connect
yellow LEST lead to positive terminal of a DC
power supply and white lead to ground. Reset
and close circuit breaker. Confirm that circuit
breaker trips when 24 Vdc (maximum pulse of
one second) is applied to leads.
2
- 14. Install circuit breaker.
Modification
Identification
TerminalConnection
Block Diagram
Connection(When Used)
Diagram
Label
(When Used)
PigtailLeads
Overcurrent
Protection
Device
(Customer Supplied)
When Required Customer Supplied
Remote Signal
Contact and
Indication (As
WhiteRequired)
TerminalBlock
I
I
Control Protection
Voltage Device
Source (Customer Supplied)
When Required
Accessory labels show connection diagram for
LEST contacts. Pigtail leadsare color coded white
andyellow.
Figure 2 - 7 Low Energy Shunt Trip Connection Diagram.
2 - 15.Connect LEST to ground fault detection circuit
to be monitored (Figure 2-7). Yellow lead is
positive. Eaton assumes no responsibility for malfunctioning
accessories installed improperly by the customer.

7
Instruction Leaflet IL29C149B
Effective December 2011
Installation Instructions for Low Energy ShuntTrip for NDB, ND,
NDC, HND, NW, HNW, NWC Circuit Breakers, Series C Molded
Case Switches, and Motor Circuit Protectors (HMCP)
EATON CORPORATION www.eaton.com
Notes:

Eaton Corporation
Electrical Sector
1111 Superior Ave.
Cleveland, OH 44114
United States
877-ETN-CARE (877-386-2273)
Eaton.com
© 2011 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. IL29C149B / TBG000810
Part No. 6634C83H03
December 2011
Eaton is a registered trademark of Eaton
Corporation.
All other trademarks are property of their
respective owners.
Instruction Leaflet IL29C149B
Effective December 2011
Installation Instructions for Low Energy ShuntTrip for NDB, ND,
NDC, HND, NW, HNW, NWC Circuit Breakers, Series C Molded
Case Switches, and Motor Circuit Protectors (HMCP)
The instructions for installation, testing, maintenance, or repair
herein are provided for the use of the product in general commercial
applications and may not be appropriate for use in nuclear applica-
tions. Additional instructions may be available upon specific request
to replace, amend, or supplement these instructions to qualify them
for use with the product in safety-related applications in a nuclear
facility.
This Instruction Booklet is published solely for information purposes
and should not be considered all-inclusive. If further information is
required, you should consult an authorized Eaton sales representa-
tive.
The sale of the product shown in this literature is subject to the
terms and conditions outlined in appropriate Eaton selling policies
or other contractual agreement between the parties. This literature
is not intended to and does not enlarge or add to any such contract.
The sole source governing the rights and remedies of any purchaser
of this equipment is the contract between the purchaser and Eaton.
NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING
WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR
MERCHANTABILITY, OR WARRANTIES ARISING FROM COURSE
OF DEALING OR USAGE OF TRADE, ARE MADE REGARDING
THE INFORMATION, RECOMMENDATIONS, AND DESCRIPTIONS
CONTAINED HEREIN.
In no event will Eaton be responsible to the purchaser or user in
contract, in tort (including negligence), strict liability or otherwise
for any special, indirect, incidental or consequential damage or loss
whatsoever, including but not limited to damage or loss of use of
equipment, plant or power system, cost of capital, loss of power,
additional expenses in the use of existing power facilities, or claims
against the purchaser or user by its customers resulting from the
use of the information, recommendations and description contained
herein.