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Benning Duspol Digital Manual

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01/2014
DUSPOL
®
digital
9
safety switch is done by testing the external conductor
(phase indication) to PE (earth). (figure F)
6. External conductor test (phase indication) (gure E)
- Fully grasp the handles L1
8
and L2
9
, in order to en-
sure a capacitive coupling to earth.
- Switch the voltage tester on by briefly actuating the push-
button
7
of the display handle L2
9
(remains switched
on for approx. 10 seconds!). When the device is switched
on, the display shows „0.0“.
- Apply the probe tip L2/+
3
to the system part to be tested.
During the single-pole external conductor test (phase in-
dication), make absolutely sure not to touch the probe tip
L1/-
2
and that it remains contactless.
- If the red LED K and the symbol O light up on the
LC display
6
, the external conductor (phase) of an AC
voltage is applied to this system part.
Note:
The single-pole external conductor test (phase indication)
can be carried out in an earthed mains from 230 V, 50/60 Hz
(phase to earth) on. Protective clothing and insulating condi-
tions on site might impair the function.
Attention!
The absence of voltage can only be determined by means of
a two-pole test.
7. Phase sequence test (gure G/H)
- Fully grasp both handles L1
8
and L2
9
, in order to en-
sure a capacitive coupling to earth.
- Apply the probe tips L1/-
2
and L2/+
3
to two external
conductors (phases) and check whether the external con-
ductor voltage of e.g. 400 V is applied.
- A clockwise phase sequence (phase L1 before phase L2)
is given, if the green LED „►“ of the phase sequence in-
dication
L
and the symbol of the phase sequence
indication
P
light up on the LC display
6
.
- A counter-clockwise phase sequence (phase L2 before
phase L1) is given, if the green LED „◄“ of the phase
sequence indication
L
and the symbol of the phase
sequence indication
P
light up on the LC display
6
.
- The phase sequence test always requires a countercheck
with the probe tips L1/-
2
and L2/+
3
being inverted dur-
ing which the phase sequence must change.
Note:
The phase sequence test can be carried out in an earthed
three-phase mains from 230 V - 900 V, 50/60 Hz (phase to
phase) on. Protective clothing and insulating conditions on site
might impair the function.
8. Continuity test (gure I)
- The continuity test must be carried out on system parts
which are free of voltage. If necessary, capacitors have to
be discharged.
- Apply the two probe tips L1/-
2
and L2/+
3
to the system
parts to be tested.
- In case of continuity (R < 100 kΩ), an acoustic signal is
emitted and the yellow LED Ω
M
for continuity lights up.
- This function also can be used to determine the conduct-
ing and non-conducting direction of semiconductor com-
ponents.
- If a voltage is applied to the test point, the voltage tester
automatically switches over to the voltage test function
and indicates this function.
9. Resistance measurement (gure J)
- The resistance measurement must be carried out on sys-
tem parts which are free of voltage. If necessary, capaci-
tors have to be discharged.
- Short-circuit the probe tips L1/-
2
and L2/+
3
and press
the push-button
7
of the display handle L2
9
once until
the kΩ symbol and „Ohm“ are shown on the LC display
6
. Display: „OL“ stands for a measured value which is
outside the measuring range.
- The resistance measurement function is active for approx.
10 seconds.
- Apply the probe tips L1/-
2
and L2/+
3
to the system
parts to be tested in order to measure resistances from
0.1 kΩ to 300 kΩ.
Note:
If required, it is possible to carry out a null balance with the
resistance measurement function being activated. For this pur-
pose, short-circuit the probe tips L1/-
2
and L2/+
3
and press
and hold the push-button
7
of the display handle L2
9
for
approx. 2 seconds until „0.0“ kΩ is shown on the LC display.
10. Diode test (gures K/L)
- The diode test must be carried out on system parts which
are free of voltage. If necessary, capacitors have to be dis-
charged.
- Short-circuit the probe tips L1/-
2
and L2/+
3
and press
the push-button of the display handle L2 twice until the
diode symbol and „diod“ are shown on the LC dis-
play
6
. Display: „OL“ VDC
- The diode test is active for approx. 10 seconds.
- Apply the probe tip L1/-
2
to the cathode and the probe
tip L2/+
3
to the anode of the diode to determine the con-
ducting-state voltage between 0.3 V and 2 V. In case of a
defective (broken down) diode, a voltage value of approx.
0.0 V will be displayed.
- In case of a diode tested in non-conducting direction, the
LC display shows „OL“.
11. Cable break detector (gure M)
- The cable break detector is intended for the non-contact
localization of cable breaks on exposed live lines.
- Switch the voltage tester on by briefly actuating the push-
button
7
of the display handle L2
9
(remains switched
on for approx. 10 seconds!). When the device is switched
on, the display shows „0.0“.
… 9 …


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