Testboy TV 455 - Page 4

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TV 450/455 Table of contents
4
5.5 Fault loop impedance and prospective fault current ........................................43
5.6 Line impedance and prospective short-circuit current / Voltage drop ..............45
5.6.1 Line impedance and prospective short circuit current ..............................46
5.6.2 Voltage drop ............................................................................................47
5.7 Earth resistance ..............................................................................................50
5.8 PE test terminal ...............................................................................................52
6 Data handling........................................................................................................54
6.1 Memory organization.......................................................................................54
6.2 Data structure..................................................................................................54
6.3 Storing test results...........................................................................................56
6.4 Recalling test results .......................................................................................57
6.5 Clearing stored data ........................................................................................58
6.5.1 Clearing complete memory content..........................................................58
6.5.2 Clearing measurement(s) in selected location .........................................58
6.5.3 Clearing individual measurements ...........................................................59
6.5.4 Renaming installation structure elements.................................................60
6.6 Communication ...............................................................................................61
7 Upgrading the instrument....................................................................................62
8 Maintenance..........................................................................................................63
8.1 Fuse replacement............................................................................................63
8.2 Cleaning ..........................................................................................................63
8.3 Periodic calibration ..........................................................................................63
8.4 Service ............................................................................................................63
9 Technical specifications ......................................................................................64
9.1 Insulation resistance........................................................................................64
9.2 Continuity ........................................................................................................65
9.2.1 Resistance R LOW
Ω ................................................................................65
9.2.2 Resistance CONTINUITY.........................................................................65
9.3 RCD testing .....................................................................................................65
9.3.1 General data ............................................................................................65
9.3.2 Contact voltage RCD-Uc ..........................................................................66
9.3.3 Trip-out time .............................................................................................66
9.3.4 Trip-out current.........................................................................................66
9.4 Fault loop impedance and prospective fault current ........................................67
9.4.1 No disconnecting device or FUSE selected .............................................67
9.4.2 RCD selected ...........................................................................................68
9.5 Line impedance and prospective short-circuit current / Voltage drop ..............68
9.6 Resistance to earth .........................................................................................70
9.7 Voltage, frequency, and phase rotation...........................................................70
9.7.1 Phase rotation ..........................................................................................70
9.7.2 Voltage .....................................................................................................70
9.7.3 Frequency ................................................................................................70
9.7.4 Online terminal voltage monitor................................................................71
9.8 General data....................................................................................................71
A Appendix A - Fuse table.......................................................................................72