HT instruments MACROTEST G3 User Manual
Page 3
MACROTESTG3 - COMBIG3
EN - 2
6.9.
ΔV%: Voltage drop of main lines ..................................................................................... 71
6.9.1.
Anomalous situations ............................................................................................................. 75
7.
OPERATIONS WITH THE MEMORY ......................................................................... 77
7.1.
Saving measurements ..................................................................................................... 77
7.2.
Recalling measurements and deleting the memory ........................................................ 78
7.2.1.
Anomalous situations ............................................................................................................. 79
8.
CONNECTING THE INSTRUMENT TO A PC ............................................................ 80
8.1.
Connection to iOS/Android devices through WiFi ........................................................... 80
9.
MAINTENANCE .......................................................................................................... 81
9.1.
General information ......................................................................................................... 81
9.2.
Replacement of the batteries .......................................................................................... 81
9.3.
Cleaning the instrument .................................................................................................. 81
9.4.
End of life ........................................................................................................................ 81
10.
TECHNICAL SPECIFICATIONS ................................................................................. 82
10.1. Technical characteristics ................................................................................................. 82
10.2. Reference guidelines ....................................................................................................... 86
10.3. General characteristics .................................................................................................... 86
10.4. Environment .................................................................................................................... 86
10.4.1.
Environmental conditions for use ........................................................................................... 86
10.5. Accessories ..................................................................................................................... 86
11.
SERVICE .................................................................................................................... 87
11.1. Warranty conditions ......................................................................................................... 87
11.2. Service ............................................................................................................................ 87
12.
THEORETICAL APPENDIXES ................................................................................... 88
12.1. Continuity of protective conductors ................................................................................. 88
12.2. Insulation resistance........................................................................................................ 89
12.3. Checking circuit separation ............................................................................................. 90
12.4. Test on differential switches (RCD) ................................................................................. 92
12.5. Verify of the breaking capacity of protection devices ...................................................... 93
12.6. Verify of protection against indirect contacts in TN systems ........................................... 94
12.7. Verify of protection against indirect contacts in TT systems ........................................... 96
12.8. Verify of protection against indirect contacts in IT systems ............................................. 97
12.9. Verify of protection coordination L-L, L-N and L-PE ........................................................ 98
12.10. Verify of the protection against short circuits – Test I2t ................................................. 100
12.11. Verification of voltage drop on main lines ...................................................................... 101
12.12. Measurement of earth resistance in TN systems .......................................................... 101
12.12.1.
Measurement of earth impedance by voltammetric method ............................................... 102
12.12.2.
Ground resistivity measurement .......................................................................................... 104