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
.....................................................................................................................16
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)
W
................................................................................21
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
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MFT1800 series
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Megger MFT1800 series Specifications

General

Brand	Megger
Model	MFT1800 series
Category	Test Equipment
Language	English