Megger TTR320 Series, Инструкция по эксплуатации

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AVTMTTR320-EN Rev A Oct 2008
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Table of Contents
1. Getting to know the TTR320 ............................................................................................................................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................................................................................................ 28
Error Messages .................................................................................................................................................. 28
Upon completion of TEST – Powering down ............................................................................................. 29
6. Service ................................................................................................................................................................ 31
Maintenance ....................................................................................................................................................... 31
Fuse Replacement ............................................................................................................................................. 31
Calibration .......................................................................................................................................................... 32
TTR320 – Self check ........................................................................................................................................ 32
Troubleshooting ................................................................................................................................................ 34
Repairs................................................................................................................................................................. 35
7. Replacement Parts List and Optional Accessories ...................................................................................... 37
8. Specifications..................................................................................................................................................... 39
Electrical ............................................................................................................................................................. 39
Environmental Conditions............................................................................................................................... 41
Physical Data...................................................................................................................................................... 41
Addendum A TTR 300 Series PowerDB Lite User Manual ........................................................................... 43