Effective 11/2003
Page 1
I.L. 66A7535H02
I.L. 66A7535H02
Table of Contents
1.0 General Description of Digitrip Trip Units ................. 6
1.1 Protection ............................................................... 6
1.2 Mode of Trip and Status Information ........................ 6
1.3 Installation and Removal .......................................... 6
1.3.1 Installation of the Trip Unit ............................ 6
1.3.2 Rating Plug Installation ................................. 7
1.3.3 Trip Unit/Rating Plug Removal ....................... 8
1.4 Installation of CH Type-V Current Sensors ............... 8
1.5 Plexiglass Cover ..................................................... 8
1.6 Digitrip 1150V Power/Relay Module ......................... 9
1.6.1 Auxiliary Power ............................................. 9
1.6.2 Alarm Contacts ............................................. 9
1.7 Standards .............................................................. 11
2.0 Description of Type VCP-T Circuit Breakers .......... 11
2.1 General ................................................................. 11
2.2 Low-Energy Trip Actuator ...................................... 11
2.3 Ground Fault Protection ........................................ 11
2.3.1 General ....................................................... 11
2.3.2 Residual Sensing ........................................ 12
2.3.3 Zero Sequence Sensing .............................. 13
2.3.4 Ground Fault ............................................... 13
3.0 Principles of Operation .......................................... 15
3.1 General ................................................................. 15
3.2 Trip and Operation Indicators ................................. 12
3.2.1 Status/Long Pickup LED ............................. 15
3.2.2 Alarm LED .................................................. 15
3.2.3 Trip LED ..................................................... 15
3.3 Zone Interlocking ................................................... 15
3.4 VT and PT Module ................................................ 17
4.0 Programming/View Digitrip 1150V ......................... 18
4.1 Main Menu ............................................................ 18
4.1.1 Power Up Sequence ................................... 18
4.1.2 Pushbutton Definition .................................. 18
4.1.3 Blink Mode ................................................. 19
4.1.4 Programming/Viewing Screens ................... 19
4.1.5 Reset Pushbutton Operation
(After Trip) .....
19
4.2 Program Settings PGM SET ................................. 19
4.2.1 CURRENT Curve Type Selection and
Pickup/Time Settings ................................. 19
4.2.2 VOLTAGE - Frequency Protection Setting .. 23
4.2.3 INCOM Communications ......................... 25
4.2.4 Aux RELAYS .............................................. 25
4.2.5 ALARMS .................................................... 25
4.2.6 Digital Relay Accessory Module ................. 26
4.2.7 TripLink ....................................................... 26
4.2.8 Setting TIME and DATE .............................. 27
4.2.9 Selecting DISPLAYS .................................. 27
4.2.10 SYSTEM Settings ...................................... 27
4.3 View Settings (VIEW SET) .................................... 28
4.3.1 Firmware Menu ........................................... 28
4.4 METER Menu ....................................................... 28
4.5 HARMONIC Menu ................................................. 29
4.6 EventLOG ............................................................. 29
4.7 Power and Energy Parameters .............................. 29
4.8 Power Quality ....................................................... 30
4.8.1 Power Factor, THD and Crest Factor .......... 30
4.8.2 Alarms ........................................................ 30
4.9 WAVEFORM CAPTURE Feature .......................... 30
4.9.1 Six Cycle Waveform Capture on Trip ........... 30
4.9.2 One Cycle Waveform Capture ..................... 30
5.0 Test Procedure ...................................................... 30
5.1 General ................................................................. 30
5.2 When to Test ........................................................ 31
5.2.1 Self Testing ................................................. 31
5.2.2 Functional Field Testing .............................. 31
5.3 Performance Testing of Digitrip 1150V Trip Units ... 32
5.3.1 General ....................................................... 32
5.3.2 Testing Using the MS-2 Multi Amp Tester ... 32
6.0 Battery .................................................................. 35
6.1 General ................................................................. 35
6.2 Battery Test .......................................................... 35
6.3 Battery Installation and Removal ........................... 36
7.0 Frame Ratings
(Sensor Ratings and Rating Plugs)........................
37
8.0 Record Keeping .................................................... 37
9.0 References ............................................................ 37
9.1 Medium Voltage Type VCP Circuit Breakers .......... 37
9.2 Time-Current Curves .............................................. 37
Appendix A Zone Interlocking Examples ....................... 41
Appendix B Troubleshooting Guide ............................... 43
Appendix C Typical Breaker Master
Connection Diagram .............................................. 45
Appendix D Display Menu Diagrams ............................. 47
Appendix E Display Abbreviations ................................. 73
Appendix F Digitrip Settings and Descriptions .............. 75
Appendix G Auxiliary Relays ......................................... 78
Appendix H Digital Relay Accessory Module ................. 79
Appendix I Modbus Translator Wiring .......................... 80
Instructions for Digitrip Models 1150V and 1150V
i
Trip Units
for use only in Cutler-Hammer
Type VCP-T, VCP-TR and T-VAC, T-VACR
Circuit Breakers
