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Instructional Literature

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Effective: May 2005

Arcflash Reduction Maintenance Switch

Application and Installation

© 2005 Eaton Corporation

All Rights Reserved

Printed in USA

Publication No. IL01906001E / TBG00092

May 2005

The instructions for installation, testing, maintenance, or repair 

herein are provided for the use of the product in general commer-

cial applications and may not be appropriate for use in nuclear 

applications. Additional instructions may be available upon spe-

cific request to replace, amend, or supplement these instructions 

to qualify them for use with the product in safety-related applica-

tions in a nuclear facility. 
The information, recommendations, descriptions, and safety nota-

tions in this document are based on Eaton’s experience and judg-

ment with respect to Retrofitting of Power Breakers. This 

information should not be considered to be all inclusive or cover-

ing all contingencies. If further information is required, Eaton 

should be consulted. 

NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WAR-

RANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MER-

CHANTABILITY, OR WARRANTIES ARISING FROM COURSE OF 

DEALING OR USAGE OF TRADE, ARE MADE REGARDING THE 

INFORMATION, RECOMMENDATIONS AND DESCRIPTIONS CON-

TAINED HEREIN.

 In no event will Eaton be responsible to the user 

in contract, in tort (including negligence), strict liability or other-

wise, for any special, indirect, incidental, or consequential dam-

age or loss whatsoever, including but not limited to damage to or 

loss of use of equipment, plant or power system, cost of capital, 

loss of profits or revenues, cost of replacement power, additional 

expenses in the use of existing power facilities, or claims against 

the user by its customers resulting from the use of the informa-

tion, recommendations, and descriptions contained herein.

Eaton Electrical Inc.

1000 Cherrington Parkway

Moon Township, PA 15108-4312

USA

tel: 1-800-525-2000

www.EatonElectrical.com

Summary of Contents for CUTTLER-HAMMER Arcflash Reduction Maintenance...

Page 1: ...th the closing springs charged Trip open the breaker and be sure the stored energy springs are discharged before performing any work The breaker may trip open or the charging springs may discharge cau...

Page 2: ...t currents that flow through the circuit breaker associated with the Arcflash Reduction Mainte nance Switch This setting choice normally does not change unless there are future system modifications th...

Page 3: ...12 16 kA 10 pickup range of 10 94 to 13 38 kA 3 Setting 5 9 1600 A 9 44 kA 10 pickup range of 8 50 to 10 38 kA 4 Setting 4 0 1600 A 6 40 kA 10 pickup range of 5 76 to 7 04 kA 5 Setting 2 5 1600 A 4 00...

Page 4: ...T 7 SDPU 6 9600A SDT 0 2 I 2 T Out Manufacturer CUTLER HAMMER Description Digitrip RMS 510 910 Frame Model 1600 A Sensor Trip 1600 0 A Plug 1600 0 A Settings Phase LDPU 1 1600A LDT 7 SDPU 6 9600A SDT...

Page 5: ...it Kit A Trip the breaker and remove it from the cell Move the breaker to a clean well lit work area Note It is the responsibility of the installer to insure that the breaker and all original componen...

Page 6: ...efore 06 05 P N 256P726H04 follow the procedures detailed in Appendix A to install an updated DS Interface Board See Fig ure 5 to help identify which DS Interface Board is installed in the breaker Fig...

Page 7: ...nance Switch Components Installed on a Non DS Breaker Note The Arcflash Reduction Maintenance Switch can be installed on any Retrofitted breaker using an Eaton 10 series Digitrip trip unit 510 610 810...

Page 8: ...er Each installation of the Arcflash Reduction Maintenance Switch mode selector switch indicator light and battery holder may vary due to the type of breaker type of cell or components options mounted...

Page 9: ...that the harness connecting the mode selector switch to the indicator light is short so the indicator light must be installed in close proximity to the mode selector switch Mark the center of the moun...

Page 10: ...rface D Using the battery holder as a template mark then drill four 4 0 109 holes in the mounting surface to accept the battery holder mounting screws Figure 17 Marking the Battery Holder Mounting Hol...

Page 11: ...y with the indicator light housing The con tact block assembly is self locking Insert the contact block assembly into the indicator light until the locking click is heard Ensure it is locked into plac...

Page 12: ...on to the RSM making sure it is away from any moving parts within the breaker In routing the harness be sure to leave a service loop in the harness to facilitate racking the breaker in to and out of t...

Page 13: ...ce and away from any moving parts within the breaker F For more information on the RSM wiring and additional cus tomer connections refer to the wiring and connections draw ing Figure 29 G Disconnect t...

Page 14: ...evice clear all newly installed components and harnesses Step 4 Activating the RSM A To activate the RSM turn the mode selector switch to the Maintenance Mode position Close the LOTO cover then follow...

Page 15: ...variety of breakers with which the Arcflash Reduction Maintenance Switch Installation can be used some excess hardware may remain when the Arcflash Reduction Maintenance Switch Retrofit is complete SE...

Page 16: ...the 2 112 40 0 25 thread cutting pan head screws supplied B Note the connection point of each harness to the DS Interface Board positions P1 through P10 Mark each harness for reconnection later in th...

Page 17: ...it Mounting Frame Figure 34 New DS Interface Board Installed on the Trip Unit Mounting Frame G Using the remaining screws spacers and lock nuts removed in Step D or the supplied 112 40 hardware secure...

Page 18: ...erature Page 18 Effective May 2005 Arcflash Reduction Maintenance Switch Application and Installation Appendix B Sample Text Data Sheet SETTING MULT PICKUP R1 9 8 X R2 7 6 X R3 5 9 X R4 4 0 X R5 2 5 X...

Page 19: ...IL01906001E For more information visit www EatonElectrical com Instructional Literature Effective May 2005 Page 19 Arcflash Reduction Maintenance Switch Application and Installation Notes...

Page 20: ...d to be all inclusive or cover ing all contingencies If further information is required Eaton should be consulted NO WARRANTIES EXPRESSED OR IMPLIED INCLUDING WAR RANTIES OF FITNESS FOR A PARTICULAR P...

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