Megger LRCD200 series, User Manual

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Replacing batteries and fuses 19
Low battery warning symbol 19
To replace batteries 19
Fuse blown indication 19
Preventive maintenance 20
Technical specification 20
Basic and service errors 22
Accessories and equipment 23
Repair and Warranty 24
Symbols used on the instrument are:
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 3
Introduction 4
General description 5
Case contents 5
LCD Display 6
Front panel 6
Connection panel 7
Lid open/closure 7
Preparations for use 8
Batteries 8
Preliminary test lead check 8
General operating instructions 8
Display warning symbols 9
Setup procedure 9
Reverse polarity or line/neutral swapping 9
Test leads 10
Test lead connection. 10
LED indicators 11
Loop testing 12
Non-tripping loop test [No Trip] 12
Hi current loop test [Hi] 12
Phase-Earth loop impedance (not at a power socket): 12
Phase-Neutral or Phase-Phase loop impedance 13
Prospective fault current display [PFC] 13
Warning messages 13
Possible sources of error 14
Residual current device (RCD) testing 14
Voltage measurement 17
Phase to earth voltage measurement 17
Frequency Hz 17
Phase sequence (LRCD220 only) 18
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