digitrip retrofit for ge breakers

8/8/2019 Digitrip Retrofit for GE BReakers

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Description Pa

Introduction

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Parts List

Eecive Augus 2010

Suersedes IL 33-856-4A Daed 01/01Isruci Leae IL 33-856-4B

Digitrip Retroft System or

G.E. AL-2-50 Breakers


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Instruction Leafet IL 33-856-4BEecive Augus 2010

Digiri Rerf Sysem rG.E. AL-2-50 Breakers

EAton CoRpoRAtIon www.ea.cm

WARNINGPOWER CIRCUIT BREAKERS ARE EQUIPPED WITH HIGH SPEED, HIGHENERGY OPERATING MECHANISMS. THE BREAKERS AND THEIRENCLOSURES ARE SIGNED WITH SEVERAL BUILT-IN INTERLOCKS ANDSAFETY FEATURES INTENDED TO PROVIDE SAFE AND PROPER OPERATINGSEQUENCES. TO PROVIDE MAXIMUM PROTECTION FOR PERSONNELASSOCIATED WITH THE INSTALLATION, OPERATION, AND MAINTENANCE

OF THESE BREAKERS, THE FOLLOWING PRACTICES MUST BE FOLLOWED.FAILURE TO FOLLOW THESE PRACTICES MAY RESULT IN DEATH,PERSONAL INJURY, OR PROPERTY DAMAGE.

Safety Precautions

Periodic tests i this device is required (see Step 15 Testing theBreaker or test procedures)

Only qualiied persons, as deined in the National Electric Code,who are amiliar with the installation and maintenance o powercircuit breakers and their associated switchgear assembliesshould perorm any work associated with these breakers

Completely read and understand all instructions beore attemptingany installation, operation, maintenance, or modiication o thesebreakers

Always turn o and lock out the power source eeding the breakerprior to attempting any installation, maintenance, or modiicationo the breaker Do not use the circuit breaker as the sole meansor isolating a high voltage circuit Follow all lockout and taggingrules o the National Electric Code and all other applicable codes,regulations, and work rules

Do not work on a closed breaker or a breaker with the closingsprings charged Trip (open) the breaker and be sure the storedenergy springs are discharged beore perorming any work Thebreaker may trip open or the charging springs may discharge,causing crushing or cutting injuries

For drawout breakers, trip (open), and then remove the breaker toa well-lit work area beore beginning work

Do not perorm any maintenance: including breaker charging, clos-ing, tripping, or any other unction which could cause signiicant

movement o the breaker while it is on the extension rails Doingso may cause the breaker to slip rom the rails and all, potentiallycausing severe personal injury to those in the vicinity

Do not leave the breaker in an intermediate position in the switch-gear cell Always leave it in the connected, disconnected, or(optional) test position Failure to do so could lead to improperpositioning o the breaker and lashover, causing death, seriouspersonal injury, and / or property damage

Do not deeat any saety interlock Such interlocks are intendedto protect personnel and equipment rom damage due to lash-over and exposed contacts Deeating an interlock could lead todeath, severe personal injury, and / or property damage


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Instruction Leafet IL 33-856-4Eecive Augus 2



Section 1: Introduction

Eaton Digitrip Retroit Kits are available in a number o conigurationsthat provide a wide range o eatures The Digitrip System startswith the 510 Basic Kit that oers true RMS sensing, overcurrentprotection, and sel-testing eatures Advanced Digitrip Retroit Kitseature zone interlocking, digital alphanumeric displays, remote alarmsignals, PowerNet communications, energy monitoring capabilities,

power actors, and harmonic content measurementsTable 1 provides a quick reerence o the components supplied witheach level o Retroit Kit Beore beginning the Retroit process,take a minute to review the inormation contained in Table 1 It isimportant that the Retroitter understands which level o Retroit Kitis to be installed and which components are included with the Kit

The instructions contained in this manual cover the installation o alllevels o Retroit Kit I the Kit you are installing does not containa certain component, skip the instructions or that component andproceed to the next

Throughout the Retroit process, reer to the Torque Tables at theback o this manual or speciic torque values

I you have any questions concerning the Retroit Kit and / or theRetroit process, contact Eaton at: 1-800-937-5487

Table 1. Available Retrofit Kits

Components 510 Basic510 with ZoneInterlock 610 810 910

Trip Unit

Rating Plug

Auxiliary Current

Transformer

(CT) Module

Auxiliary

CT Harness

Sensors

Sensor Harness

Direct Trip Actuator (DTA)

Mounting Brackets and Hardware

External Harness Plug 1 Connector Harness 2 Connector Harness 3 Connector Harness 4 Connector Harness

Cell Harness

Breaker Mounted Control Power Transformer (CPT

Potential Transformer (PT) Module

Auxiliary Switch


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STEP 15: TESTING THE BREAKER

A. Measure the force necessary to trip theBreaker at the point where the Trip AdjustingScrew Finger impacts the Breaker Trip Plate.The force necessary to trip the Breaker MUST

NOT EXCEED THREE (3) lbs.

B. The Retrofit must be tested using primaryinjection. Refer to Section 8 of the Instructionsfor theApplication of Digitrip RMS Retrofit Kitson Power Circuit Breakers (Publication

AD 33-855), supplied with the Retrofit Kit, fordetailed testing procedures and specifica-tions. For test information specific to the TripUnit, refer to the IL publication supplied withthe Retrofit Kit (see the Pick List for the ILnumber).

C. While Section 8 of theInstructions for theApplication of Digitrip RMS Retrofit Kits onPower Circuit Breakers provides the informa-tion necessary for testing the Breaker, pleasekeep the following notes in mind when review-ing other sections of the publication.

the wiring and examine each connection toassure its integrity.

Confirm that the PowerNet communicationwiring is correct by following the proceduresdetailed in Section 7.4 of the Instructions for

theApplication of Digitrip RMS Retrofit Kits oPower Circuit Breakers. Note that for 810 and910 Kits, the impedance between COM 1 andCOM 2 should be between one (1) and three(3) ohms.

When testing is complete, disconnect theExternal Harness fromthe Cell Harness. FinaExternal Harness connection will be performedlater in the Retrofit Process.

WHEN ALL TESTING IS COMPLETE, THE TRIPUNIT MUST BE RESET. FAILURE TO DO SO

MAY CAUSE THEBATTERY IN THERATINGPLUG TO RUN DOWN.

NOTES:

1. ForAll Kits OtherThan510 Basic. If testingthe Breaker with Short Delay or Ground Faultfunctions, be sure to either plug in the CellHarness Assembly or use the Zone InterlockShorting Plug. Failure to do so may result inshorter than expected trip times.

2. For810 and 910 Kits Only. Without any powerapplied to the system (neither the 120 voltpower supply nor the Aux. Power Moduleconnected), plug the External Harness into theCell Harness and check the impedance be-tween COM 1 and COM 2. The impedanceshould be between one (1) and three (3) ohms.If the impedance is not within this range, trace


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Table 2. Torque Values for General Mounting and Screw SizeConversion

Decimal Size (in) Standard Size Torque (in-lbs) Torque (ft-lbs)

.112 4.40 10 0.8

.138 6.32 18 1.5

.164 8.32 36 3.0

.190 10.32 46 3.8

.250 1/4-20 100 8.3

.312 5/16-18 206 17.2

.375 3/8-16 356 29.7

.438 7/16-14 572 47.7

.500 1/2-13 856 71.3

Table 3. Torque Values for Copper BUS Connectors

Decimal Size (in) Standard Size Torque (in-lbs) Torque (ft-lbs)

.250 1/4-20 60 5

.312 5/16-18 144 12

.375 3/8-16 240 20

.500 1/2-13 600 50


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Digiri Rerf Sysem r

G.E. AL-2-50 Breakers

Eaton CorporationElectrical Group1000 Cherrington ParkwayMoon Township, PA 15108United States877-ETN-CARE (877-386-2273)Eatoncom

2010 Eaton CorporationAll Rights ReservedPrinted in USAPublication No IL 33-856-4B / TBG000413Part No IL33-856-4H03August 2010

PowerChain Management is a registeredtrademark o Eaton Corporation

All other trademarks are property o theirrespective owners

The instructions or installation, testing, maintenance, or repairherein are provided or the use o the product in general commercialapplications and may not be appropriate or use in nuclear applica-tions Additional instructions may be available upon speciic requestto replace, amend, or supplement these instructions to qualiy themor use with the product in saety-related applications in a nuclearacility

The inormation, recommendations, descriptions, and saety nota-tions in this document are based on Eatons experience and judg-ment with respect to Retroitting o Power Breakers This instruction-al literature is published solely or inormation purposes and shouldnot be considered all-inclusive I urther inormation is required, youshould consult an authorized Eaton sales representative

The sale o the product shown in this literature is subject to theterms and conditions outlined in appropriate Eaton selling policiesor other contractual agreement between the parties This literatureis not intended to and does not enlarge or add to any such contractThe sole source governing the rights and remedies o any purchasero this equipment is the contract between the purchaser and Eaton

NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDINGWARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE ORMERCHANTABILITY, OR WARRANTIES ARISING FROM COURSEOF DEALING OR USAGE OF TRADE, ARE MADE REGARDING

THE INFORMATION, RECOMMENDATIONS, AND DESCRIPTIONSCONTAINED HEREIN. In no event will Eaton be responsible to thepurchaser or user in contract, in tort (including negligence), strictliability or otherwise or any special, indirect, incidental or conse-quential damage or loss whatsoever, including but not limited todamage or loss o use o equipment, plant or power system, costo capital, loss o power, additional expenses in the use o existingpower acilities, or claims against the purchaser or user by its cus-tomers resulting rom the use o the inormation, recommendationsand description contained herein

digitrip retrofit for ge breakers

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