AVTMTTR25 Rev C April 2008
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TABLE OF CONTENTS
1 INTRODUCTION ......................................................................................................................... 1
About the TTR25........................................................................................................ 1
Electrical Theory and Practice ...................................................................................2
Applications for the TTR25 ........................................................................................4
Upon Receipt of the TTR25 ....................................................................................... 5
Safety First................................................................................................................. 5
How to Use This Manual............................................................................................5
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SAFETY ................................................................................................................................... 7
Overview....................................................................................................................7
Safety Requirements ................................................................................................. 7
Cautions and Warnings..............................................................................................8
3 CONTROLS & CONNECTORS ...................................................................................................... 9
Overview....................................................................................................................9
Connectors ..............................................................................................................10
4 SETUP, CONNECTIONS AND OPERATION .................................................................................. 11
General Instructions.................................................................................................11
Transformers ...........................................................................................................11
Single-Phase, Two-Winding Transformers ..............................................................12
Distribution Transformers with Two Secondary Windings........................................ 12
Three-Phase, Two-Winding Transformers...............................................................16
Three-Phase, Three-Winding Transformers ............................................................16
Current Transformers (CTs)..................................................................................... 17
General Operating Procedure.................................................................................. 20
Description of Menus and Test Screens ..................................................................20
Use with the Optional Printer ................................................................................... 23
HyperTerminal Configuration................................................................................... 25
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MAINTENANCE AND TROUBLESHOOTING .................................................................................... 27
Maintenance ............................................................................................................ 27
Calibration Check.....................................................................................................27
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