HT EASYTEST User Manual page 3

6.7.8. Verification of protection against indirect contacts (IT systems) ............................................ 68
6.7.9. Verification of protection against indirect contacts (TT systems) .......................................... 70
6.7.10. Verification of protection against indirect contacts (TN systems) .......................................... 72
6.7.11. Anomalous situations ............................................................................................................. 74
6.8. LoZ: Line/Loop impedance with high resolution ............................................................. 77
6.9. 1,2,3: Phase sequence and phase concordance test ..................................................... 78
6.9.1. Anomalous situations ............................................................................................................. 81
6.10. V%: Voltage drop of mains .......................................................................................... 82
6.10.1. Anomalous situations ............................................................................................................. 85
7. STORING RESULTS .................................................................................................. 88
7.1. Saving measures ........................................................................................................... 88
7.2. Recall of data to display and memory deletion ............................................................... 89
8. CONNECTING THE INSTRUMENT TO THE PC ....................................................... 90
9. MAINTENANCE.......................................................................................................... 91
9.1. General information ....................................................................................................... 91
9.2. Replacement of the batteries ......................................................................................... 91
9.3. Cleaning the instrument ................................................................................................. 91
9.4. End of life ...................................................................................................................... 91
10. TECHNICAL SPECIFICATIONS ................................................................................ 92
10.1. Technical characteristics ............................................................................................... 92
10.2. Reference guidelines ..................................................................................................... 95
10.3. General characteristics .................................................................................................. 95
10.4. Environment .................................................................................................................. 95
10.4.1. Environmental conditions for use ........................................................................................... 95
10.5. Accessories ................................................................................................................... 95
11. SERVICE .................................................................................................................... 96
11.1. Warranty conditions ....................................................................................................... 96
11.2. Service .......................................................................................................................... 96
12. THEORETICAL APPENDIXES ................................................................................... 97
12.1. Continuity of protective conductors ................................................................................ 97
12.2. Insulation resistance ...................................................................................................... 98
12.2.1. Measurement of polarization index (PI) ................................................................................. 99
12.2.2. Dielectric Absorption Ratio (DAR) .......................................................................................... 99
12.3. Checking circuit separation .......................................................................................... 100
12.4. Test on differential switches (RCD) .............................................................................. 102
12.5. VerifICATION of the breaking capacity of protection devices ....................................... 103
12.6. Verify of protection against indirect contacts in TN systems ........................................ 104
12.7. Ra test in TN systems ............................................................................................... 106
12.8. Verify of protection against indirect contacts in TT systems ......................................... 107
12.9. Verify of protection against indirect contacts in IT systems .......................................... 108
12.10. Verify of protection coordination L-L, L-N and L-PE ..................................................... 109
12.11. Verifiy of voltage drop on mains ................................................................................... 111
EN - 3
EASYTEST-COMBI519