Eaton Cutler-Hammer DSII Series - Table of Contents

Page iv
l.B. 694C694-02
TABLE OF CONTENTS
SECTION 1: INTRODUCTION PAGE
1-1 General lnformation ............................................................................................................................................. 1
1-2 Safety Features ................................................................................................................................................... 2
1-3 Safety Practices .................................................................................................................................................. 2
1-4 Qualified Personnel ............................................................................................................................................. 3
1-5 Other Publications
and Documentation ............................................................................................................... 3
SECTION 2: RECEIVING, HANDLING AND INSTALLATION
2-1 General lnformation ............................................................................................................................................. 5
2-2 Unpacking Circuit Breaker ................................................................................................................................... 5
2-2.1 Storing Circuit Breaker ........................................................................................................................... 5
2-3 Lifting Circuit Breaker .......................................................................................................................................... 5
2-4 Breaker Inspection .............................................................................................................................................. 6
2-5 Levering Circuit Breaker ...................................................................................................................................... 7
2-6 Drawout Dummy Element ................................................................................................................................... 8
2-7 Fixed Circuit Breaker ........................................................................................................................................... 8
SECTION 3: EQUIPMENT DESCRIPTION
3-1 Type DSll Circuit Breaker. ................................................................................................................................... 9
3-2 Type
DSLI I (Limiter) Circuit Breaker ................................................................................................................. 1 O
3-3 Basic Breaker Assembly ................................................................................................................................... 11
3-4 Pole Units .......................................................................................................................................................... 11
3-4.1 Primary Moving Contact Assembly ...................................................................................................... 11
3-4.2 Primary Stationary Contact Assembly .................................................................................................. 12
3-5 lnterphase Barriers ............................................................................................................................................ 12
3-6 DE-ION Arc Chutes (Interrupter Assemblies) .................................................................................................... 14
3-7 Electronic Tripping System ................................................................................................................................ 14
3-7.1 Electronic Trip Unit ............................................................................................................................... 16
3-7.2 Sensors ................................................................................................................................................ 16
3-7.3 Trip Actuator ......................................................................................................................................... 16
3-8 Operating Mechanism ....................................................................................................................................... 17
3-8.1 Manually Operated Circuit Breaker ...................................................................................................... 17
3-8.2 Power Operated Circuit Breaker ..........................................................................................................
18
3-9 Movable Primary and Secondary Contacts ....................................................................................................... 18
3-1 O Standard and Optional Devices ......................................................................................................................... 19
3-10.1 Motor Cut-Off Switch (LS) .................................................................................................................... 19
3-10.2 Spring Release Device (SRO) .............................................................................................................. 19
3-10.3 Anti-Pump Relay (Y) ............................................................................................................................. 19
3-10.4 Shunt Trip Attachment (ST A) ............................................................................................................... 19
3-10.5 Latch Check Switch .............................................................................................................................. 20
3-10.6 Auxiliary Switch .................................................................................................................................... 20
3-10. 7 Undervoltage Trip Attachment (UVT A) ................................................................................................. 20
3-10.8 Overcurrent Trip Switch ........................................................................................................................ 21
3-11 Miscellaneous Details ........................................................................................................................................ 21
3-11.1 Interference lnterlock ............................................................................................................................ 21
3-11.2 Ground Contact .................................................................................................................................... 22
3-11.3 Close Bar Guard ................................................................................................................................... 22
3-11.4 Operation Counter ................................................................................................................................ 22
Effective 07 /97
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