Benning IT 115 - Page 4

BENNING IT 115 Content
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5.8 Testing the protective conductor connection (PE) ..................................................... 49
6 Maintenance .................................................................................................................... 51
6.1 Fuse replacement ..................................................................................................... 51
6.2 Cleaning .................................................................................................................... 51
6.3 Periodic calibration .................................................................................................... 51
6.4 Service ...................................................................................................................... 52
7 Technical data ................................................................................................................. 53
7.1 Insulating resistance.................................................................................................. 53
7.2 Low-impedance resistance / continuity test ............................................................... 54
7.2.1 Low-impedance resistance R LOW ................................................................... 54
7.2.2 Continuity test .................................................................................................... 54
7.3 Residual current protection devices (RCDs) .............................................................. 55
7.3.1 General data ...................................................................................................... 55
7.3.2 Contact voltage (Uc) .......................................................................................... 55
7.3.3 Tripping time (RCD t) ......................................................................................... 56
7.3.4 Tripping current (RCD I) .................................................................................... 56
7.4 Loop impedance and prospective short-circuit current ............................................... 57
7.4.1 Zs function (for systems without RCD) ............................................................... 57
7.4.2 Zsrcd function (for systems with RCD) ............................................................... 57
7.5 Line impedance and prospective short-circuit current / voltage drop ......................... 58
7.6 Earthing resistance ................................................................................................... 58
7.7 TRMS voltage, frequency and phase sequence ........................................................ 59
7.7.1 TRMS voltage (AC/DC) ..................................................................................... 59
7.7.2 Voltage of the connection monitor ..................................................................... 59
7.7.3 Frequency ......................................................................................................... 59
7.7.4 Phase sequence (rotary field) ............................................................................ 59
7.8 General data ............................................................................................................. 60
Appendix A Fuse table – Prospective short-circuit current .......................................... 61
Appendix B Standard and optional accessories for specific measuring functions .... 64
Appendix C "Commander" test probe, "Commander" test plug ................................... 65
C.1 Safety warnings ................................................................................................ 65
C.2 Batteries ................................................................................................................... 65
C.3 Description of the optional "Commanders" .......................................................... 66
C.4 LED indications of the "Commanders" .................................................................. 67