Testing For Live Voltage Using Ncv; Detecting Live And Neutral Wires - VOLTCRAFT VC33 Bedienungsanleitung

9.9 Testing for live voltage using NCV

With the non-contact-voltage (NCV) detection function you can check for the pres-
ence of alternating voltage in alternating current circuits.
Voltage detection is indicated by the NCV detection bar graph and a beeper. The
NCV bar graph increases in length and the beeps increase in intensity as you ap-
proach the voltage source.
1. Disconnect the test leads from the multimeter.
2. Press the power button to switch the multimeter on.
3. Repeatedly press the button NCV until the display shows "NCV".
4. Approach the voltage source with the NCV sensor.
à
The beeper indicates the presence of alternating voltage.
à
The NCV bar graph indicates the distance to the voltage source.

9.10 Detecting live and neutral wires

With the live-wire detection function you can detect the live and neutral wire in al-
ternating current circuits.
1. Connect the red test lead to the measurement socket INPUT.
2. Press the power button to switch the multimeter on.
3. Touch the wire you want to test with the test probe.
à
If the wire is the live wire, you will hear a continuous beep, the display
flashes, and the live bar graph moves to the right end of the display.
à
If the wire is the neutral wire, you will hear intermittent beeps, the display
flashes, and the live bar graph moves up to the middle of the display.
WARNING
Non-contact-voltage (NCV) testing is unreliable
Danger to life from electric shock
● Always verify NCV test results by a 2-pole measurement
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