Benning DUSPOL expert Manual De Instrucciones página 7

diodes (LED)  indicating DC and AC voltages in steps
of 12; 24; 50; 120; 230; 400; AC 690 V/ DC 750 V. The
indicated voltages are nominal voltages. With DC voltage,
the LEDs also indicate the polarity for 12 V and 24 V
(see chapter 5). The 12 V LED can only be activated by
pressing both push buttons.
LC display
The LC display  serves for the phase test with
alternating current (AC) and indicates the phase-
sequence of a three-phase mains.
3. Functional check
- Check the voltage tester for correct function
immediately before use!
- Test all functions by means of known voltage
sources.
• For DC voltage tests use e.g. a car battery.
• For AC voltage tests use e.g. a 230 V socket.
• Connect both contact electrodes  to test the
continuity check for correct function.
• Check the battery status for the phase-sequence
indication by activating the measuring point
illumination. Replace the batteries, if necessary.
Do not use the voltage tester unless all functions are
operating correctly!
Check the function of the LC display  by single-pole
connection of the contact electrode  of the test probe
L1 to an external conductor (phase).
4. How to test AC voltages
- Place the contact electrodes  of the test probes L1
and L2 against the relevant points of the unit
under test.
- For AC voltages from 24 V onwards and when
pressing both push buttons (load test) from 12 V
onwards, the LEDs "plus" and "minus"  and  light
up. Furthermore, all LEDs light until the step value of
the applied voltage is reached.
- When pressing both push buttons  and from an
applied voltage of approx. 200 V onwards, a vibrating
motor is put in rotation inside the test probe L2
With the voltage increasing, the speed of this motor
is increasing as well.
Please make sure that you touch the voltage tester at the
insulated handles of test probes L1
Do not cover the display and do not touch the contact
electrodes !
4.1 How to test the phase at AC voltage
- The phase test is possible in the earthed mains from
230 V onwards!
- Firmly grasp the handle of test probe L1
- Place the contact electrode  of test probe L1
against the relevant point of the unit under test.
- If the "R" symbol appears on the LC display ,
the tester is in contact with the live phase of an AC
voltage on this point of the unit under test.
Never touch the contact electrode of test probe L2
during the single-pole test (phase test)!
Note:
The reading of the LC display  might be impaired due
to unfavorable light conditions, protective clothing or in
insulated locations.
Attention:
The absence of voltage can be detected by means of a
bipolar test only.
5. How to test DC voltages
- Place the contact electrodes  of the test probes L1
and L2 against the relevant points of the unit
under test.
- For AC voltages from 24 V onwards and when
pressing both push buttons (load test) from 12 V
onwards, the LEDs "plus" and "minus"  and  light
up. Furthermore, all LEDs light until the step value of
the applied voltage is reached.
09/ 2009

and L2
.
- When pressing both push buttons  and from an
applied voltage of approx. 200 V onwards, a vibrating
motor is put in rotation inside the test probe L2
With the voltage increasing, the speed of this motor
is increasing as well.
5.1 How to test the polarity at DC voltage
- Place the contact electrodes  of the test probes L1
and L2
under test.
- If LED  lights up, the "positive pole" of the unit
under test is at test probe
- If LED  lights up, the "negative pole" of the unit
under test is at test probe
6. How to test the phase sequence of a three-phase
mains
The required auxiliary voltage is provided by the power
supply (2 x 1.5 V batteries) integrated into test probe L1
A. Check the functional status of the batteries before
measuring by activating the measuring point illumination.
- The phase-sequence test is possible from 230 V AC
voltage (phase against phase) onwards in a earthed
three-phase mains.
- Firmly grasp the insulated handles
test probes L1 and L2.
- Place the contact electrodes  of the test probes L1
and L2
under test.
- The LEDs have to indicate the external conductor
voltage.
- When contacting the two contact electrodes  with
two phases of a three-phase mains connected in
clockwise rotation, the LC display  indicates the
"R" symbol. If for two phases the rotation is anti-
clockwise, no symbol appears on the LC display.
The phase-sequence test always requires a counter-test!
If the LC display  indicates clockwise rotation for two
phases of a three-phase mains, those two phases must
be contacted again with reversed contact electrodes
.  during the counter-test. There must be no symbol
indicated on the LC display during the counter-test. If in
both cases the LC display indicates the „R" symbol, the
earthing is too weak or the batteries are empty.
only! Attention!
In case of empty batteries, „R" indication for clock-
wise and anti-clockwise rotation!
Note:
The reading of the LC display  might be impaired due
to unfavorable light conditions, protective clothing or in
insulated locations.
7. How to test an electrically conductive connection
(continuity check)
- The continuity check must be performed on the
relevant points of a "dead" (not being under voltage)
unit under test. If necessary, the capacitors must be
discharged.
- The necessary test voltage is supplied by means of
the power supply (2 x 1.5 V batteries) integrated in
the test probe L1
- The test
0 - 108 kΩ.
- Place the test probes L1
contact electrodes  against the relevant points of
the unit under test.
- When
connection with the contact electrodes , the voltage
tester gives an acoustic signal and the signaling LED
 lights up.
8. Battery replacement
Do not set the voltage tester under voltage with the
battery compartment being open!
The energy supply for the phase-sequence indication, il-
lumination and continuity check of the DUSPOL
DUSPOL expert
®

against the relevant points of the unit
.
.
against the relevant points of the unit
.
is possible within
contacting an electrically
.
and of the
the range of
and L2 with the
conductive
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expert
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