AVTMTTR330 Rev 3 March 2010
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Table of Contents
1. Getting to know the TTR330 ............................................................................................................................ 1
Product Overview ................................................................................................................................................ 1
User Interface Panel ............................................................................................................................................. 4
Communications ports ........................................................................................................................................ 5
HOME Action Icons ........................................................................................................................................... 5
Utility Icons ........................................................................................................................................................... 6
2. Safety ..................................................................................................................................................................... 7
Safety is the responsibility of the user ............................................................................................................... 7
Input Power precautions ..................................................................................................................................... 8
3. PREPARING FOR TEST ................................................................................................................................ 9
Site Preparation ..................................................................................................................................................... 9
Making Circuit Connections ............................................................................................................................... 9
4. Connecting to the Transformer ...................................................................................................................... 11
Single-Phase, Two-Winding Transformers .................................................................................................... 11
Three-Phase, Two-Winding Transformers .................................................................................................... 14
Three-Phase, Three-Winding Transformers ................................................................................................. 15
Current Transformers (CTs) ............................................................................................................................ 16
BCTs Mounted on Three-Phase Transformers ............................................................................................ 19
T-Type Transformers ....................................................................................................................................... 22
5. Operation ........................................................................................................................................................... 23
Power up ............................................................................................................................................................. 23
Navigating the screen ........................................................................................................................................ 23
HOME Screen Action Icons ........................................................................................................................... 23
Remote Control Operation for LTC Testing ................................................................................................ 27
Error Messages .................................................................................................................................................. 27
Upon completion of TEST – Powering down ............................................................................................. 28
6. Service ................................................................................................................................................................ 31
Maintenance ....................................................................................................................................................... 31
Fuse Replacement ............................................................................................................................................. 31
Calibration .......................................................................................................................................................... 31
TTR330 – Self check ........................................................................................................................................ 35
Troubleshooting ................................................................................................................................................ 37
Repairs ................................................................................................................................................................. 38
7. Replacement Parts List and Optional Accessories ...................................................................................... 39
8. Specifications ..................................................................................................................................................... 41
Electrical ............................................................................................................................................................. 41
Environmental Conditions............................................................................................................................... 43
Physical Data
...................................................................................................................................................... 43
Addendum A TTR 300 Series PowerDB Lite User Manual ........................................................................... 43
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