User manual
Gx Series
EN - 1
Table of contents:
1. PRECAUTIONS AND SAFETY MEASURES ............................................................... 3
1.1. Preliminary instructions ..................................................................................................... 3
1.2. During use ......................................................................................................................... 4
1.3. After use ............................................................................................................................ 4
1.4. Definition of measurement (overvoltage) category ............................................................ 4
2. GENERAL DESCRIPTION ........................................................................................... 5
2.1. Foreword ........................................................................................................................... 5
2.2. Instrument functions .......................................................................................................... 6
3. PREPARATION FOR USE ........................................................................................... 7
3.1. Initial checks ...................................................................................................................... 7
3.2. Instrument power supply ................................................................................................... 7
3.3. Calibration ......................................................................................................................... 7
3.4. Storage .............................................................................................................................. 7
4. NOMENCLATURE ........................................................................................................ 8
4.1. Instrument description ....................................................................................................... 8
4.2. Description of measuring leads ......................................................................................... 8
4.3. Keyboard description ......................................................................................................... 9
4.4. Display description ............................................................................................................ 9
4.5. Initial screen ...................................................................................................................... 9
5. GENERAL MENU ....................................................................................................... 10
5.1. Instrument settings .......................................................................................................... 10
5.1.1. Language ............................................................................................................................... 10
5.1.2. Reference country .................................................................................................................. 11
5.1.3. Automatic Power OFF for display and key sound ................................................................. 11
5.1.4. System ................................................................................................................................... 11
5.1.5. Operator name entry .............................................................................................................. 12
5.1.6. System date/time setting ........................................................................................................ 12
5.2. Information ...................................................................................................................... 12
6. OPERATING INSTRUCTIONS ................................................................................... 13
6.1. LOW: Continuity of protective conductors .................................................................... 13
6.1.1. Anomalous situations ............................................................................................................. 16
6.2. M: Measurement of insulation resistance ..................................................................... 17
6.2.1. Anomalous situations ............................................................................................................. 20
6.3. RCD: Test on differential switches .................................................................................. 21
6.3.1. AUTO mode ........................................................................................................................... 25
6.3.2. x½, x1, x2, x5 modes ............................................................................................................. 26
6.3.3. Mode x1 – Test on RCDs with delay time .............................................................................. 26
6.3.4. Mode ................................................................................................................................. 27
6.3.5. Test on earth leakage relay RCD .......................................................................................... 28
6.3.6. Anomalous situations ............................................................................................................. 29
6.4. LOOP: Line impedance/Loop and overall earth resistance ............................................. 32
6.4.1. Test types ............................................................................................................................... 34
6.4.2. STD Mode – Generic test ...................................................................................................... 35
6.4.3. Mode kA – Verify of breaking capacity of protection device .................................................. 38
6.4.4. Mode I
2
t – Verify of protection against short-circuit ............................................................... 40
6.4.5. Mode - Verify of protection coordination ..................................................................... 43
6.4.6. Mode - Verify of protection coordination – Norvay country ......................................... 45
6.4.7. Verify of protection against indirect contacts (TN system) .................................................... 47
6.4.8. Verify of protection against indirect contacts (IT systems) .................................................... 49
6.4.9. Verify of protection against indirect contacts (TT systems) ................................................... 50
6.4.10. Impedance measurement by means of the accessory IMP57 .............................................. 52
6.4.11. Anomalous situations ............................................................................................................. 54
6.5. SEQ: Phase sequence and phase concordance test ...................................................... 56
6.5.1. Anomalous situations ............................................................................................................. 59
6.6. LEAKAGE: Leakage current measurement ..................................................................... 60
6.7. EARTH: Measurement of earth resistance ...................................................................... 62
6.7.1. 3-wire or 2-wire earth measurement and 4-wire ground resistivity ....................................... 62