45
Identification of Placed Power Cables
Switch off the fuses and power down the electrical
circuits.
The different wires in the cable must be twisted on
one side so that they are electrically conductive.
Connect the transmitter with two poles to the cable
to be tested at the open cable side.
Where several transmitters are used, the work
effort for moving the transmitter elsewhere. When
several transmitters are used, every transmitter
needs a separate signal code.
Move the receiver along the cables’ twisted side. The respective signal code is indicated on the display
The cables can be identified.
Finding Interruption in Grid Lines
This test does not require a transmitter.
The mains cable must be under mains voltage.
Put the transmitter into the contact-free voltage test mode “NCV”.
Move the receiver along the mains cable starting at the outlet.
When the mains voltage is recognised, a signal sounds and the
bar display is activated.
When the break is reached, the sound goes out and the bar dis-
play disappears.
☞
The tone height and deflection of the bar display
depends on the distance and voltage height of the
mains cable.
Repeat the test with the mains plug turned by 180°.
This prevents overlooking an interruption of the neu-
tral conductor.
A higher tone is no secure sign for the voltage height, though. Reliable voltage measurement
is only possible with a suitable measuring device with a value display.
