Table Of Contents - HT COMBITEST422 User Manual

TABLE OF CONTENTS

1. PRECAUTIONS AND SAFETY MEASURES ............................................................... 4
1.1. Preliminary instructions .................................................................................................... 4
1.2. During use ....................................................................................................................... 5
1.3. After use .......................................................................................................................... 5
1.4. Definition of measurement (overvoltage) category ........................................................... 5
2. GENERAL DESCRIPTION ........................................................................................... 6
2.1. Instrument functions ........................................................................................................ 6
3. PREPARATION FOR USE ........................................................................................... 7
3.1. Initial checks .................................................................................................................... 7
3.2. Instrument power supply .................................................................................................. 7
3.3. Storage ............................................................................................................................ 7
4. NOMENCLATURE ........................................................................................................ 8
4.1. Instrument description ..................................................................................................... 8
4.2. Description of measuring leads ........................................................................................ 8
4.3. Keyboard description ....................................................................................................... 8
4.4. Display description .......................................................................................................... 9
4.5. Initial screen .................................................................................................................... 9
5. GENERAL MENU ....................................................................................................... 10
SET - Instrument settings ............................................................................................. 10
5.1.
5.1.1. Language ............................................................................................................................... 10
5.1.2. Country ................................................................................................................................... 11
5.1.3. Electrical system .................................................................................................................... 11
5.1.4. General settings ..................................................................................................................... 11
5.1.5. Auto Start feature ................................................................................................................... 12
5.1.6. Date and time ......................................................................................................................... 12
5.1.7. Information ............................................................................................................................. 12
6. OPERATING INSTRUCTIONS ................................................................................... 13
6.1. AUTO: Automatic test sequence (Ra , RCD, M) ........................................................ 13
6.1.1. Anomalous situations ............................................................................................................. 20
6.2. DMM: Digital multimeter function ................................................................................... 21
6.3. RPE: Continuity of protective conductors ....................................................................... 23
6.3.1. TMR mode ............................................................................................................................. 25
>  < mode ............................................................................................................................. 26
6.3.2.
6.3.3. Anomalous situations ............................................................................................................. 27
6.4. Lo: Continuity of protective conductors with 10A ......................................................... 28
6.4.1. Anomalous situations ............................................................................................................. 29
6.5. M: Measurement of insulation resistance .................................................................... 30
6.5.1. TMR mode ............................................................................................................................. 34
6.5.2. AUTO mode ........................................................................................................................... 35
6.5.3. Anomalous situations ............................................................................................................. 36
6.6. RCD: Test on differential switches ................................................................................. 39
6.6.1. AUTO mode ........................................................................................................................... 42
6.6.2. AUTO mode ....................................................................................................................... 43
6.6.3. x½, x1, x5 modes ................................................................................................................... 44
6.6.4. mode ................................................................................................................................. 45
6.6.5. Anomalous situations ............................................................................................................. 46
6.7. LOOP: Line/Loop impedance and overall earth resistance ............................................ 49
6.7.1. Test types ............................................................................................................................... 52
6.7.2. Test cable calibration (ZEROLOOP)...................................................................................... 54
STD Mode - Generic test ...................................................................................................... 56
6.7.3.
Br.Cap mode - Verification of the breaking capacity of protection devices .......................... 58
6.7.4.
6.7.5. TripT - Verification of protection coordination ........................................................................ 60
6.7.6. Ra 2-wire test - Verification of protection against indirect contacts ................................... 62
6.7.7. Ra 3-wire test - Verification of protection against indirect contacts ................................... 64
6.7.8. Verification of protection against indirect contacts (IT systems) ............................................ 66
6.7.9. Verification of protection against indirect contacts (TT systems) .......................................... 67
EN - 2
COMBITEST422