Bosch PDO 6 Originalbetriebsanleitung Seite 9

OBJ_BUCH-308-002.book Page 22 Wednesday, November 3, 2010 9:44 AM
22 | English
Scanning for "Live" Wires
The measuring tool indicates "live" wires/conductors
that carry voltages between 110 V and 400 V, and a fre-
quency corresponding with the common standard (AC
with 50 to 60 Hz). Other wires/conductors (carrying
DC, higher/lower frequency or voltage) as well as
"dead" wires/conductors cannot be found reliably, but
are possibly indicated as metal objects.
The scan for "live" wires/conductors takes place auto-
matically for each measurement. When a "live" wire/
connductor is detected, the indicator b appears in the
display. Move the measuring tool over the surface re-
peatedly in order to localise the "live" wire. After mov-
ing the measuring tool over the surface several times,
the position of the "live" wire/conductor can be indi-
cated quite precisely. If the measuring tool is very close
to the wire/conductor, then the illuminated ring 1
lights up red and the signal tone sounds with rapid
tone sequence.
"Live" wires/conductors can be detected easier when
power consumers (e.g., lamps, appliances) are con-
nected to the wire/conductor being sought and
switched on. Wires/conductors with 110 V, 230 V and
400 V (three-phase current) are detected with about
the same scan capacity.
Under certain conditions (such as when behind metal
surfaces or behind surfaces with high water content),
"live" wires/conductors cannot be detected with certain-
ty. When measuring indicator c is indicated over a larger
range, then the material is screening-off electrically and
the scan for "live" wires/conductors is not reliable.
1 609 929 X43 | (3.11.10) Bosch Power Tools