LaserLiner CableTracer Pro, Руководство по эксплуатации, Страница: 22 / 88

22
GB
7
Applications
There are three general applications:
A. Use with a receiver: Locate live lines.
B. Single-pole use with sender and receiver: Measurement of separate forward and return conductors,
see images d and e in chapter 7B.
C. Two-pole use with sender and receiver: Measurements with common forward and return conductors
in one cable, see image c.
6 Prepare for measuring
– The measurements should always be taken on cables that have been shut down. - Be sure to
follow the safety instructions when working under voltage.
!
When checking the functionality of the protective earth, please ensure compliance with the safety
regulations set out by local and national authorities.
!
For safety reasons, the sender should only be connected
from the phase against the neutral conductor (example
c) when working under voltage. However, if the sender
is connected from the phase against the protective earth
(example d), it is essential to check whether the protective
earth is properly earthed and fully functional. If this is not
the case, any part connected to the earth may be under
voltage.
c
When working under voltage, the sender may determine the phase conductor. To do this, connect the
black cable (-) to the protective earth and the red cable (+) to the conductor to be measured. You will
know that it is the phase conductor if the display indicates voltage and a warning symbol (example a). If
those are not displayed, it is either the neutral conductor N (example b) or the operating voltage is not
present or the protective earth has not been connected properly.
Technically, the measurements can always be taken on cables with or without voltage. The receiving range
of the receiver is generally wider when working with dead-voltage cables. The sender is always powered
by battery.
If a fault current is already present in the measuring circuit, the ground fault circuit interrupter can
be released by the additional power from the sender.
!
b
LEVEL
CODE
LEVEL
a
LEVEL
CODE Volt
230
120
50
12
LEVEL
d