Eaton CM52 - Table of Contents

v
Instruction Booklet IB 52-01-TE
Effective October 2010
Instructions for the Eaton Type CM52
Network Protectors 800 to 4500 Amperes
EATON CORPORATION www.eaton.com
v IB -52-01-TE
Effective 11/05/08 (super cedes 11/19/03) IB 52-01-TE
v
TABLE OF CONTENTS
DESCRIPTION PAG E
Disclaimer of Warranties and Limitation of Liability................................................................................................................ii
Safety Pages.............................................................................................................................................
..............................................iii
Network Protector Rating Tables...................................................................................................................................................vii
Introduction.............................................................................................................................................
..............................................ix
Section I - Receiving, Handling and Storing
1.1. Receiving..............................................................................................................................................................................1
1.2. Handling...............................................................................................................................................................................1
1.2.1. Lifting of Breaker..............................................................................................................................................1
1.2.2. Lifting of enclosure...........................................................................................................................................1
1.3. Storing..................................................................................................................................................................................1
Section II - G eneral Description
2.0 General..............................................................................................................................................
.................................................2
2.1 CM52 Network Protector..................................................................................................................................................3
2.1.1 Frame ...................................................................................................................................................................3
2.1.2 Circuit B reaker Unit .......................................................................................................................................3
2.1.2.1 Arc Chutes .................................................................................................................................................3
2.1.2.2 Current Transformers .........................................................................
..................................................3
2.1.2.3 Operating Mechanism ..........................................................................
..................................................3
2.1.2.4 Control Module ........................................................................................................................................3
Section III - Operation
3.1 Procedure to Remove the Drawout Unit ....................................................................................................................4
3.1.1 To Open the Door .............................................................................................................................................4
3.1.2 Levering the B reaker ......................................................................................................................................4
3.2 Enclosure ..............................................................................................................................................................................5
3.2.1 Outside Operating Handle .............................................................................................................................5
3.2.2 Mechanical Anti-Close Interlock ................................................................
.................................................6
3.2.3 Installing Network Protectors to Network Transf ormer ......................................................................6
Section IV - Circuit B reaker Description and Operation
4.1 Introduction..........................................................................................................................................................................6
4.2 B asic Circuit Breaker Assembly ....................................................................................................................................6
4.3 Pole Unit.................................................................................................................................................................................7
4.3.1 Primary Moving Contacts...............................................................................................................................7
4.3.2 Primary Stationary Contacts.........................................................................................................................8
4.4 Electrical Operation...........................................................................................................................................................8
4.4.1 Procedure to Remove the Motor...................................................................
................................................8
4.4.2 Anti-Pump Feature...........................................................................................................................................9
4.4.3 Anti-Close Feature............................................................................................................................................9
4.4.4 Trip and Lockout..............................................................................................................................................9
4.5 Arc Chambers......................................................................................................................................................................9
4.5.1 Arc Chutes...........................................................................................................................................................9
4.6 Electronic Tripping System .............................................................................................................................................9
4.7 Internal Electrical Accessories......................................................................................................................................10
Electrical Testing........................................................................................................................................................................11
Manual Closing of the CM52 B reaker.................................................................................................................................12
Section V – Renewal Parts
5.1 Renewal Parts list................................................................................................................................................................12
Diagrams................................................................................................................................................................................13-18
Addendum-Electrical Saf ety Interlock................................................................................................................................19
Addendum-Handle Change Instructions............................................................................................................................20
Addendum-Hardware Bag Kits.............................................................................................................................................22
Addendum-Maintenance Procedure.....................................................................................................................................24