Megger MFT70 Bedienungsanleitung

Megger Messung MFT70

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MFT70-US

Multifunction Tester

With On - board memory

User Manual

www.megger.com

Contents

SAFETY WARNINGS 5

Live Ground safety precautions ........................................................................................................................6

Symbols used on the instrument are: ..............................................................................................................7

Introduction 8

Overview .........................................................................................................................................................8

Front panel and controls ..................................................................................................................................8

Display .............................................................................................................................................................8

Display symbols ..............................................................................................................................................9

Waste electrical and electronic equipment......................................................................................................10

Battery and fuse location, ﬁtting and replacement .........................................................................................10

To replace batteries or fuse: ...........................................................................................................................10

For battery replacement: ................................................................................................................................10

For fuse replacement .....................................................................................................................................10

Rechargeable batteries and battery charging ..................................................................................................10

To charge the batteries:..................................................................................................................................11

Operation 12

General operation – all models.......................................................................................................................12

Switching on ...............................................................................................................................................12

Switching off ..............................................................................................................................................12

Backlight .....................................................................................................................................................12

Test buttons .................................................................................................................................................12

Test button lock ..........................................................................................................................................12

Mode button functions ............................................................................................................................13

Test inhibit .....................................................................................................................................................13

Insulation .......................................................................................................................................................13

Continuity ....................................................................................................................................................13

GFCI testing ...................................................................................................................................................13

Ground testing ..............................................................................................................................................13

Battery exhausted ..........................................................................................................................................13

Voltage, frequency, current and temperature measurement............................................................................14

Making a voltage measurement .....................................................................................................................14

OR if using the mains plug lead SAI10:...........................................................................................................14

Frequency measurement ................................................................................................................................15

Phase rotation ................................................................................................................................................15

Leakage current measurement ......................................................................................................................15

Temperature measurement ............................................................................................................................15

Switch probe .................................................................................................................................................15

Continuity / resistance measurement ..............................................................................................................16

Nulling test lead resistance (up to 9.99 ohms)

.........................................................................................16