GE EntelliGuard TU

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EntelliGuard®TU Trip Unit

09/25/08 Table of Contents

SECTION 3 – OPERATION................................................................................................................................................................................19

CIRCUIT BREAKER OPENING..................................................................................................................................19

WAVEFORM CAPTURE ..............................................................................................................................................19

EVENT LOGGING..........................................................................................................................................................19

LED STATUS INDICATOR ..........................................................................................................................................20

OPERATING MODES ...................................................................................................................................................20

SETUP MODE .................................................................................................................................................................21

Entering Setpoints into Memory.......................................................................................................21

Long Time Pickup .....................................................................................................................................21

Long Time Delay .......................................................................................................................................21

Short Time Pickup ....................................................................................................................................21

Short Time Delay ......................................................................................................................................21

Reduced Instantaneous Let-through Instantaneous Protection (RELT)......................21

Ground Fault Protection .......................................................................................................................22

Internal Residual Summation ............................................................................................................22

External Sensed Zero Sequence Input..........................................................................................22

Ground Fault Pickup Settings ............................................................................................................22

Ground Fault Time Delay Bands.......................................................................................................22

SECTION 4 – BATTERY......................................................................................................................................................................................23

GENERAL BATTERY INFORMATION.....................................................................................................................23

BATTERY FUNCTION ..................................................................................................................................................23

BATTERY REPLACEMENT..........................................................................................................................................23

SECTION 5 – MAINTENANCE AND TROUBLESHOOTING.........................................................................................................................24

MAINTENANCE .............................................................................................................................................................24

Rating Plug Removal and Replacement ......................................................................................24

TROUBLESHOOTING..................................................................................................................................................24

APPENDIX 1: COMMUNICATIONS PARAMETERS.......................................................................................................................................26

APPENDIX 2: OPERATING MODES AND FUNCTIONS SPECIFICS...........................................................................................................37

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