METREL MI 3125 - Default Chapter; Table of Contents

MI 3125 / MI 3125E EurotestCOMBO Table of contents
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Table of contents
1 Start-up guide ......................................................................................................... 4
1.1 Safety and operational considerations ................................................................ 4
1.2 Instrument description - Front and connector panel ........................................... 5
1.3 Instrument description - Meaning of symbols ..................................................... 5
1.4 Function selector switch and instrument display ................................................. 7
1.5 Battery handling .................................................................................................. 7
1.6 Maintenance ....................................................................................................... 8
1.6.1 Replacing fuses ........................................................................................... 8
1.7 Warranty & Repairs ............................................................................................ 9
1.8 Contact Metrel UK ............................................................................................ 10
2 Quick-test guide ................................................................................................... 11
2.1 Null the leads .................................................................................................... 11
2.2 Measurements .................................................................................................. 12
2.2.1 Online Voltage and frequency / Phase sequence - AC Voltage
measurement and frequency measurements, phase sequence ............................. 12
2.2.2 Insulation resistance - For testing the M value of the insulation between
wires ................................................................................................................... 14
2.2.3 Continuity for testing resistance of earth conductors and equipotential
bonding ................................................................................................................... 16
2.2.4 RCD testing - 3 functions for testing RCDs. ............................................... 18
2.2.5 Loop - Fault loop impedance ...................................................................... 20
2.2.6 Line impedance - (phase-neutral, phase-phase) ........................................ 22
2.2.7 Earthing resistance (MI 3125E) .................................................................. 24