Contents
1. Safety Warnings ........................................................................................................2
1.1 Warnings, Cautions and Notes ........................................................................................ 2
1.1.1 Warnings ........................................................................................................................ 2
1.1.2 Cautions ......................................................................................................................... 2
1.1.3 Notes .............................................................................................................................. 2
1.2 Safety warnings ................................................................................................................ 2
1.2.1 Test lead safety warnings ................................................................................................. 3
1.3 Product Safety Category - Measurement Connection .................................................... 3
1.3.1 Voltage ........................................................................................................................... 3
1.3.2 CAT IV ............................................................................................................................ 3
1.3.3 CAT III ............................................................................................................................. 3
1.3.4 CAT II .............................................................................................................................. 3
1.4 Safety, Hazard and Warning Symbols on the Instrument .............................................. 4
1.4.1 Warning Icons ................................................................................................................. 4
2. Introduction ...............................................................................................................5
2.1 Product Description .......................................................................................................... 5
2.2 Applications ...................................................................................................................... 6
2.3 Features ............................................................................................................................. 6
2.4 Company web site. ........................................................................................................... 6
2.5 Instrument Controls ......................................................................................................... 7
2.6 Instrument Display ........................................................................................................... 8
2.7 Instrument Controls.......................................................................................................... 9
2.8 Instrument Connections and Leads ................................................................................. 10
2.8.1 View on top of MTR105 .................................................................................................. 10
3. Instrument Set up ......................................................................................................11
3.1 Warnings and exception conditions ................................................................................ 11
3.2 Power ................................................................................................................................ 11
3.2.1 First use ......................................................................................................................... 11
3.2.2 Turn the instrument on and off ....................................................................................... 11
3.2.3 Power options ................................................................................................................. 12
3.3 Lockout Voltage ............................................................................................................... 12
4. Insulation Resistance Tests .......................................................................................13
4.1 Insulation test options...................................................................................................... 13
4.2 Two Terminal and Guard .................................................................................................. 13
4.3 Automatic discharge ........................................................................................................ 14
4.4 Insulation Resistance (IR) Test .......................................................................................... 14
4.4.1 Buzzer settings ................................................................................................................ 16
4.4.2 Temperature compensation ............................................................................................. 17
4.5 3 Phase (3P) ....................................................................................................................... 18
4.6 Polarization Index (PI) ...................................................................................................... 20
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