MI 3288 EI Tester Table of contents
6
11.7 Insulation Resistance Measurement [Riso] ..................................................... 99
11.7.1 Insulation Resistance measurement ...................................................... 100
11.7.2 Diagnostic Test ...................................................................................... 101
11.7.3 Varistor Test ........................................................................................... 105
11.8 Current [I] ...................................................................................................... 106
11.8.1 Current Clamp Meter .............................................................................. 107
12 Auto Sequences® ................................................................................................ 108
12.1 Selection of Auto Sequence®........................................................................ 108
12.1.1 Selecting an active Auto Sequence® group in Auto Sequences® menu 108
12.1.2 Searching in Auto Sequences® menu ................................................... 109
12.1.3 Organization of Auto Sequences® in Auto Sequences® menu ............. 110
12.2 Organization of Auto Sequence® .................................................................. 112
12.2.1 Auto Sequence® view menu .................................................................. 112
12.2.2 Step by step executions of Auto Sequence® ......................................... 113
12.2.3 Auto Sequence® result screen ............................................................... 114
12.2.4 Auto sequence memory screen .............................................................. 117
13 Communication .................................................................................................... 118
14 Maintenance ......................................................................................................... 119
14.1 Fuse replacement .......................................................................................... 119
14.2 Battery pack insertion / replacement ............................................................. 120
14.3 Cleaning ........................................................................................................ 121
14.4 Periodic calibration ........................................................................................ 121
14.5 Service .......................................................................................................... 121
14.6 Upgrading the instrument .............................................................................. 121
15 Technical specifications ..................................................................................... 122
15.1 Voltage and frequency [U/f] ........................................................................... 122
15.1.1 Voltage Meter RMS ................................................................................ 122
15.1.2 Frequency .............................................................................................. 122
15.2 Current [I] ...................................................................................................... 123
15.2.1 Iron (A 1281) and Flex (A 1227, A 1609) current clamp ......................... 123
15.3 Earth [Ze] ....................................................................................................... 124
15.3.1 2, 3, 4 - pole ........................................................................................... 124
15.3.2 Selective (Iron Clamp) ............................................................................ 125
15.3.3 2 Clamps ................................................................................................ 126
15.4 Specific Earth Resistance Measurements [ρ] ................................................ 127
15.4.1 Wenner and Schlumberger method........................................................ 127
15.5 Earth Potential [Us] ....................................................................................... 128
15.5.1 Step and Touch ...................................................................................... 128
15.6 DC Resistance [R] ......................................................................................... 129
15.6.1 Ω - Meter (200mA) ................................................................................. 129
15.6.2 Ω - Meter (7mA) ..................................................................................... 130
15.7 Insulation Resistance Measurement [Riso] ................................................... 131
15.7.1 Insulation Resistance - (IR, DD, - Test) .................................................. 131
15.7.2 Varistor test ............................................................................................ 133
15.8 Influence of the auxiliary electrodes .............................................................. 134
15.9 Influence of low test current through clamps ................................................. 134
15.10 Influence of noise .......................................................................................... 135
15.10.1 Digital filtering technique ........................................................................ 136
15.11 Sub-results in measurement functions .......................................................... 136
