Megger MIT300, User Manual

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Insulation testing 15
Test lock 15
SP4F Switched (optional accessory for MIT320) 16
Test result storage (MIT330 only) 16
Replacing batteries and fuses 18
Low battery warning symbol 18
To replace batteries 18
Fuse replacement (user replaceable) 19
Preventive maintenance 19
Technical specification 20
Accessories and equipment 23
Repair and Warranty 24
Symbols used on the instrument are:
F
Caution: risk of electric shock
G
Caution: refer to accompanying notes
t
Equipment protected throughout by Double
Insulation (Class II)
c
Equipment complies with current EU directives.
Equipment complies with ‘C tick’ requirements
CONTENTS
3
Safety warnings 4
Introduction 2
General description 4
Case contents 5
LCD display 6
Front panel (digital instruments) 6
Connection panel 7
Lid open/closure 7
Preparations for use (all instruments) 8
Batteries 8
Preliminary test lead check 8
General operating instructions 8
General functions 8
Test lead connection. 9
Continuity measurement (MIT300, 310, 320, 330) 10
Test lead null 10
Continuity test (MIT300, 310,320, 330) 10
Continuity Buzzer (MIT300, 310, 320, 300) 11
Continuity buzzer mode: 11
Setup mode (MIT320/330 only) 11
Insulation testing - General 12
Insulation test 12
Test lock 13
Insulation test (MΩ alarm ON/OFF (MIT320 only) 13
MΩ threshold adjustment (MIT320/330 only) 13
Insulation test lock disable (MIT320/330 only) 13
AC / DC Voltage measurement 14
Analogue Instrument MIT310A 14
Test lead null 14
Continuity test 15
Continuity buzzer test 15