Manual metrel

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Instruction Manual Earth - Insulation Tester

SIMPLE TO OPERATE

METREL Horjul

Earth –Insulation Tester

TABLE OF CONTENTS 1. INTRODUCTION ............................................................................................ 2 1.1. General description ................................................................................. 2 1.2. Warnings................................................................................................. 3 1.3. List of paremeters measureble by the Earth - Insulation Tester .............. 4 1.4. Standards applied ................................................................................... 4 2. INSTRUMENT DESCRIPTION....................................................................... 5 2.1. Front panel.............................................................................................. 6 2.2. Connector panel ...................................................................................... 7 2.3. Bottom side.............................................................................................. 8 2.4. Standard accessories.............................................................................. 9 2.5. Optional accessories ............................................................................... 9 2.6. Ways of carrying the instrument .............................................................. 9 3. MEASUREMENT INSTRUCTIONS................................................................ 10 3.1. Insulation Resistance.............................................................................. 10 3.2. Voltage .................................................................................................... 14 3.3. Continuity of protection conductors ......................................................... 16 3.4. Continuity ................................................................................................ 20 3.5.Earth Resistance (internal generator)...................................................... 22 3.6. Specific Earth Resistance........................................................................ 29 3.7. Current (True RMS)................................................................................. 32 3.8. Varistor Over-voltage ProtectionDevices................................................ 34 4. MEMORY AND OTHER OPERATIONS......................................................... 37 4.1. Storing of test results............................................................................... 37 4.2. Recalling of stored results ....................................................................... 38 4.3. Erasing of storedresults.......................................................................... 40 4.4. RS232 communication ............................................................................ 40 4.5. Reset of the instrument ........................................................................... 41 4.6.General setings ........................................................................................ 42 5. MAINTENANCE............................................................................................. 43 5.1. Batteries .................................................................................................. 43 5.2. Fuses....................................................................................................... 44 5.3. Cleaning.................................................................................................. 44 5.4. Periodic calibration .................................................................................. 45 5.5. Service .................................................................................................... 45 6. TECHNICAL SPECIFICATION....................................................................... 46 6.1. Functions...
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