HVTest ETCR2000, Руководство пользователя

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Contents
I. Attention ................................................................................................ 6
II. Brief Introduction ............................................................................... 7
III. Specification ....................................................................................... 8
1. Model of Series ............................................................................................................ 8
2. Ranges and Accuracy of Measurement ................................................................... 9
3. Technical Specifications ..............................................................................................9
IV. Structure of Meter ........................................................................... 10
V. Crystal Display .................................................................................. 11
1. LCD Screen .................................................................................................................11
2. Description of Special Symbols ............................................................................... 12
3. Examples Illustrated .................................................................................................. 12
VI
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Quick Find Table ........................................................................... 14
VII. Operating Method ......................................................................... 14
1. Boot Up ........................................................................................................................14
2. Shutdown .................................................................................................................... 16
3. Resistance Measurement .........................................................................................16
*4. Current Measurement ..............................................................................................17
5. Data Lock/Release/Storage ..................................................................................... 18
*6. Data Access .............................................................................................................. 19
*7. Setting of Alarm Critical Value ................................................................................ 20
*8. Access to Alarm Critical Value ................................................................................20
*9. Clear Data ..................................................................................................................21
VIII. Measurement Principle .............................................................. 21
1. Principle of Resistance Measurement ....................................................................21
2. Principle of Current Measurement .......................................................................... 22
IX. Measurement Method of Grounding Resistance .................. 22
1. Multi-Point Grounding System ................................................................................. 22
2. Limited Point Grounding System .............................................................................24
3. Single-Point Grounding System .............................................................................. 25