Benning IT 130 - Page 4

BENNING IT 130 Content
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5.5 Loop impedance and prospective short-circuit current...............................................46
5.6 Line impedance and prospective short-circuit current / voltage drop....................48
5.6.1 Line impedance and prospective short-circuit current ........................................49
5.6.2 Voltage drop......................................................................................................50
5.7 Earthing resistance ...................................................................................................52
5.8 Testing the protective conductor connection (PE) .....................................................54
5.9 TRMS current by means of current clamp adapter ....................................................56
5.10 Single-fault leakage current (ISFL) in IT networks .....................................................57
5.11 Luminous intensity ....................................................................................................59
6 Management of measured values..................................................................................61
6.1 Memory structure ......................................................................................................61
6.2 Saving measuring results ..........................................................................................63
6.3 Recalling measuring results ......................................................................................64
6.4 Deleting measuring results........................................................................................65
6.4.1 Deleting the entire measured value memory......................................................65
6.4.2 Deleting all measurements of each storage location and subordinate storage
locations 65
6.4.3 Deleting an individual measurement..................................................................66
6.5 Renaming installation structure fields ........................................................................67
6.5.1 Renaming installation structure fields by means of the PC software ..................67
6.5.2 Renaming the installation structure fields by means of the barcode scanner .....67
6.6 USB and RS232 interface .........................................................................................68
7 Maintenance ....................................................................................................................69
7.1 Fuse replacement .....................................................................................................69
7.2 Cleaning....................................................................................................................69
7.3 Periodic calibration....................................................................................................69
7.4 Service......................................................................................................................70
8 Technical data.................................................................................................................71
8.1 Insulating resistance..................................................................................................71
8.2 Low-impedance resistance / continuity test ...............................................................72
8.2.1 Low-impedance resistance R LOW ...................................................................72
8.2.2 Continuity test....................................................................................................72
8.3 Residual current protection devices (RCDs)..............................................................72
8.3.1 General data......................................................................................................72
8.3.2 Contact voltage (Uc)..........................................................................................73
8.3.3 Tripping time (RCD t).........................................................................................73
8.3.4 Tripping current (RCD I) ....................................................................................74
8.4 Loop impedance and prospective short-circuit current...............................................75
8.4.1 Zs function (for systems without RCD)...............................................................75
8.4.2 Zsrcd function (for systems with RCD)...............................................................75
8.5 Line impedance and prospective short-circuit current / voltage drop .........................76
8.6 Earthing resistance ...................................................................................................77
8.7 TRMS voltage, frequency and phase sequence ........................................................77
8.7.1 TRMS voltage (AC/DC) .....................................................................................77
8.7.2 Voltage of the connection monitor .....................................................................77
8.7.3 Frequency .........................................................................................................77
8.7.4 Phase sequence (rotary field)............................................................................77
8.8 TRMS current (AC / DC) via current clamp adapter...................................................78
8.9 Single-fault leakage current (ISFL) in IT networks .....................................................79
8.10 Luminous intensity ....................................................................................................79
8.11 General data .............................................................................................................80