HT COMBITEST422, User Manual

Page: 2 / 111

COMBITEST422
EN - 2
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
5.1. SET
– Instrument settings ............................................................................................. 10
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
6.3.2. >

< mode ............................................................................................................................. 26
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
6.7.3. STD Mode
– Generic test ...................................................................................................... 56
6.7.4. Br.Cap mode
– Verification of the breaking capacity of protection devices .......................... 58
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