Table Of Contents - Megger MFT1800 Series User Manual

Contents
1. Safety ............................................................................................................................................ 8
1.1. Safety Warnings ....................................................................................................................................... 8
1.2. Live earth safety precautions .................................................................................................................. 9
1.3. Symbols used on the instrument ............................................................................................................ 10
2. Introduction .................................................................................................................................. 11
2.1. Overview .................................................................................................................................................. 11
2.1.1. Front panel and controls ........................................................................................................................ 11
2.1.2. Display .................................................................................................................................................. 12
2.1.3. Display symbols ..................................................................................................................................... 12
2.1.4. Waste electrical and electronic equipment ............................................................................................. 13
2.1.5. Battery and fuse location, fitting and replacement ................................................................................. 13
3. Operation ...................................................................................................................................... 15
3.1. General operation - all models .............................................................................................................. 15
3.1.1. Switching on ......................................................................................................................................... 15
3.1.2. Switching off......................................................................................................................................... 15
3.1.3. Backlight ............................................................................................................................................... 15
3.1.4. Test buttons .......................................................................................................................................... 15
3.1.5. Test button lock .................................................................................................................................... 15
3.2. Mode button functions
3.3. Test inhibit ............................................................................................................................................... 17
3.3.1. Insulation .............................................................................................................................................. 17
3.3.2. Continuity ............................................................................................................................................. 17
3.3.3. Earth loop impedance ........................................................................................................................... 17
3.3.4. RCD/GFCI testing .................................................................................................................................. 17
3.3.5. Earth testing ......................................................................................................................................... 17
3.3.6. Battery exhausted ................................................................................................................................. 17
4. Voltage, frequency, current and temperature measurement ................................................... 18
4.1. Making a voltage measurement............................................................................................................. 18
4.2. Frequency measurement ......................................................................................................................... 19
4.3. Phase rotation ......................................................................................................................................... 19
4.4. Leakage current measurement ............................................................................................................... 19
4.5. Temperature measurement .................................................................................................................... 19
4.6. Switch probe ............................................................................................................................................ 20
5. Continuity / resistance measurement ......................................................................................... 21
5.1. Nulling test lead resistance (up to 9.99 ohms)
5.2. Making a CONTINUITY measurement .................................................................................................... 22
5.3. Storing / downloading results................................................................................................................. 22
5.4. Continuity Buzzer ON/OFF ...................................................................................................................... 22
5.5. Switch probe (SP5) ................................................................................................................................... 23
5.6. Buzzer threshold ..................................................................................................................................... 23
5.7. Measurement methods and sources of error......................................................................................... 23
4 MFT1800 series
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W
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