Major tech MT478 Gebruikershandleiding - Pagina 11

Blader online of download pdf Gebruikershandleiding voor {categorie_naam} Major tech MT478. Major tech MT478 16 pagina's. Voltage tester

5. Operation

5.3 Single-pole phase Test

• The single-pole phase test is only possible when batteries are installed

and in good condition.

• The single-polephase test starts at an AC voltage of approx.100V

(pole>100V AC).

• When using single-pole phase tests to determine external conductors the

display function may be impaired under certain conditions (e.g. for

insulating body protective equipment on insulation locations).

• The single-pole phase testing is not appropriate to determine whether a

line is live or not. For this purpose, the double-pole voltage test is always

required.

• Connect both test probes with power source.

• A signal sound indicates the phase.

• The "

" LED is illuminated in the display

• The continuity test is only possible when batteries are installed and in

good condition. A signal sound is audible for continuity and the LED for

continuity LED

5.5 Voltage Test with Switched Load, RCD Trip Test

• During voltage tests, you can decrease the interference voltages from

inductive or capacitive coupling by loading the UUT with a lower

impedance than the Tester has in normal mode. In systems with RCD

circuit breakers, you can trip an RCD switch with the same low

impedance as when you measure voltage between L and PE.

• To do an RCD trip test during voltage measurement, push the two low

impedance buttons (14)at the same time. If you have 10 mA or 30 mA

RCDs between L and PE in a 230 V system, it will trip.

• During load current, the indicator probe side vibrates and the low

impedance LED is the indication for the ﬂowing load current. This

indication is not to be used for voltage test or measurement.

• If the two pushbuttons are not used, the RCDs will not trip, even in

measurements between L and PE.

(6) is illuminated.