AVTMMTO210 Rev 7 Sept 2013
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Table of Contents
1 Getting to know the MTO210 ........................................................................................................................... 1
Product Overview ................................................................................................................................................ 1
Top Panel Controls .............................................................................................................................................. 3
2 Safety ...................................................................................................................................................................... 7
Safety is the responsibility of the user ............................................................................................................... 7
General Safety Precautions ................................................................................................................................. 8
Input Power Precautions ..................................................................................................................................... 9
3 Preparing for a Test ........................................................................................................................................... 11
Site Preparation .................................................................................................................................................. 11
Making Circuit Connections ............................................................................................................................ 11
4 Operating the MTO210 .................................................................................................................................... 15
Description of Test Sequence ......................................................................................................................... 15
5 Transformer Testing ......................................................................................................................................... 25
Winding Resistance Testing ............................................................................................................................. 25
Testing a Single-Phase Transformer ............................................................................................................... 26
Testing Delta Configured Windings ............................................................................................................... 33
Testing Transformers with Tap Changers ..................................................................................................... 35
Testing Voltage Regulators .............................................................................................................................. 36
Demagnetizing a Transformer ......................................................................................................................... 39
6 MTO210 Series PowerDB Lite ....................................................................................................................... 41
Introduction ....................................................................................................................................................... 41
Software Installation ......................................................................................................................................... 42
Using PowerDB Lite ......................................................................................................................................... 45
Frequently Asked Questions (FAQ’s) ............................................................................................................ 52
7 Service ................................................................................................................................................................. 53
Maintenance ....................................................................................................................................................... 53
Fuse Replacement ............................................................................................................................................. 53
Calibration .......................................................................................................................................................... 54
Repairs ................................................................................................................................................................. 55
ERROR CODES .............................................................................................................................................. 56
8 Parts List and Optional Accessories ............................................................................................................... 63
9 Specifications ...................................................................................................................................................... 65
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