
16
CONTENTS
1. PRESENTATION ............................................................................................................................................................................................... 2
2. DESCRIPTION .................................................................................................................................................................................................. 3
3. NEUTRAL SYSTEMS ....................................................................................................................................................................................... 4
3.1 TT network................................................................................................................................................................................................ 4
3.2 TN network ............................................................................................................................................................................................... 5
3.3 IT network ................................................................................................................................................................................................. 5
4. INSULATION RESISTANCE MEASUREMENT ............................................................................................................................................... 6
4.1 Case 1: Measurement of insulation with a 2 MΩresistance in parallel with a capacity of 5 µF
(configuration of insulation measurement between conductors) ............................................................................................................. 6
4.2 Case 2: Insulation measurement in a single-phase mains socket (configuration for measurement of
the insulation of the whole installation in relation to the earth) ............................................................................................................... 6
5. CHECKING OF DIFFERENTIAL DEVICE ....................................................................................................................................................... 7
6. EARTH AND RESISTIVITY MEASUREMENT................................................................................................................................................. 8
6.1 Resistivity measurement .......................................................................................................................................................................... 8
6.2 Earth measurement.................................................................................................................................................................................. 8
7. LOOP MEASUREMENT ................................................................................................................................................................................... 9
8. CONTINUITY MEASUREMENT ..................................................................................................................................................................... 10
9. FAULT SIMULATION ...................................................................................................................................................................................... 11
10. TECHNICAL SPECIFICATIONS..................................................................................................................................................................... 12
10.1 Electrical ................................................................................................................................................................................................. 12
10.2 Dimensions and weight .......................................................................................................................................................................... 12
10.3 Power supply .......................................................................................................................................................................................... 12
10.4 Environmental conditions ....................................................................................................................................................................... 12
10.5 Compliance with standards .................................................................................................................................................................... 12
11. MAINTENANCE .............................................................................................................................................................................................. 13
11.1 Cleaning.................................................................................................................................................................................................. 13
11.2 Calibration testing................................................................................................................................................................................... 13
12. WARRANTY .................................................................................................................................................................................................... 13
13. TO ORDER...................................................................................................................................................................................................... 13
1. PRESENTATION
The «Electrical Installation»demo case can be used to simulate the different types of neutral systems characteristic of the
electrical systems encountered in domestic, tertiary and industrial environments:
■TT system
■TN-S or TN-C system
■IT system
Depending on the measuring instruments used with this demo case, it is possible to measure:
■Earth / Resistivity
■Differential systems
■Insulation
■Phase-neutral or phase-earth loop
■Continuity
For each neutral system, certain faults can be simulated:
■Phase outage
■Neutral cut-off
■Earth cut-off
■Neutral-earth inversion
■Phase-earth leakage current (4...34 mA)
In its robust site casing suitable for all conditions in the field, it is easy to transport from one place to another thanks to its fold-away
handle.
A depressurization valve (unscrewable black button near the handle or two holes under the handle, depending on the series) also
allows you to take it on aircraft without worrying about opening the case when you arrive, despite the wide pressure variations.