Instruction Leaflet DT3000
Page iv Effective: Date 07/02 I.B. 17555D
For more information visit: www.cutler-hammer.eaton.com
Supersedes I.B. 17555C dated November 1999
TABLE OF CONTENTS
SECTION 1: INTRODUCTION......................................................................................................................................................2
1-1 PRELIMINARY COMMENTS AND SAFETY PRECAUTIONS ............................................................................................2
1-1.1 WARRANTY AND LIABILITY INFORMATION..............................................................................................................3
1-1.2 SAFETY PRECAUTIONS .............................................................................................................................................3
1-2 GENERAL INFORMATION .................................................................................................................................................3
1-3 FUNCTIONS/FEATURES/OPTIONS ..................................................................................................................................4
1-4 STANDARDS ......................................................................................................................................................................6
SECTION 2: FUNCTIONAL DESCRIPTION.................................................................................................................................6
2-1 PROTECTION, TESTING AND COMMUNICATION CAPABILITIES..................................................................................6
2-1.1 RMS SENSING.............................................................................................................................................................6
2-1.2 PICKUP SETTING ........................................................................................................................................................6
2-1.3 TIME SETTING.............................................................................................................................................................7
2-1.4 PROTECTION CURVE SETTINGS ..............................................................................................................................7
2-1.5 INTEGRAL TESTING .................................................................................................................................................11
2-1.6 COMMUNICATIONS ..................................................................................................................................................11
2-2 PROTECTIVE RELAY HARDWARE .................................................................................................................................14
2-2.1 FRONT OPERATIONS PANEL ..................................................................................................................................14
2-2.2 Rear Access Panel......................................................................................................................................................16
2-2.3 EXTERNAL HARDWARE ...........................................................................................................................................18
SECTION 3: OPERATION..........................................................................................................................................................20
3-1 INTRODUCTION ...............................................................................................................................................................20
3-2 POWER-UP AND SELF TESTING....................................................................................................................................20
3-3 PANEL OPERATIONS ......................................................................................................................................................20
3-3.1 CHARACTERISTIC CURVE .......................................................................................................................................20
3-3.2 PROGRAM MODE......................................................................................................................................................26
3-3.3 PROGRAMMING OVERVIEW....................................................................................................................................27
3-3.4 TEST MODE ...............................................................................................................................................................28
3-4 COMMUNICATIONS FUNCTION......................................................................................................................................28
3-4.1 ADDRESS AND BAUD RATE SETTINGS..................................................................................................................29
SECTION 4: APPLICATION CONSIDERATIONS......................................................................................................................29
4-1 ZONE INTERLOCKING CAPABILITIES............................................................................................................................29
SECTION 5: INSTALLATION, STARTUP AND TESTING .........................................................................................................32
5-1 INTRODUCTION ...............................................................................................................................................................32
5-2 PANEL PREPARATION ....................................................................................................................................................32
5-2.1 CUTOUT .....................................................................................................................................................................32
5-2.2 MOUNTING ................................................................................................................................................................32
5-3 REPLACING DIGITRIP MV WITH DIGITRIP 3000 ...........................................................................................................32
5-4 WIRING .............................................................................................................................................................................33
5-5.1 BEFORE POWER APPLICATION ..............................................................................................................................34
5-5.2 INITIAL POWER APPLICATION.................................................................................................................................34
5-6 MISCELLANEOUS TESTING ...........................................................................................................................................34
SECTION 6: MAINTENANCE AND STORAGE..........................................................................................................................34
6-1 GENERAL .........................................................................................................................................................................34
6-1.1 STORAGE ..................................................................................................................................................................34
6-2 TROUBLESHOOTING GUIDE (TABLE 6.1) .....................................................................................................................34
6-3 REPLACEMENT................................................................................................................................................................34
SECTION 7: TIME-CURRENT CURVES ....................................................................................................................................37
7-1 DIGITRIP 3000 INVERSE TIME OVERCURRENT CURVES ...........................................................................................37
7-2 DIGITRIP 3000 CURVE EQUATIONS ..............................................................................................................................61
APPENDIX A ..............................................................................................................................................................................62
A1.0 INTRODUCTION............................................................................................................................................................62
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