Checking The Absence Of Voltage Of An Installation; Load Connection With Vibration Motor; External Conductor Test (Phase Indication); Phase Sequence Test - Gossen MetraWatt DUSPOL analog 1000 Mode D'emploi

4.

Checking the absence of voltage of an installation

(figure A/B)
For checking the installation, please test the absence of volt-
age by checking the voltage indication, the phase indication
(the phase indication only works in an earthed AC voltage
mains) and the vibration motor (the vibration motor is activated
by actuating both push-buttons). The installation is only free
of voltage, if all three test circuits (voltage indication, phase
indication and vibration motor) are signaling the absence of
voltage.
- Apply the two probe tips L1/+
parts to be tested.
- The level of voltage applied is indicated by means of the
LED step indicator
- Actuate both push-buttons
level indicator
load in the voltage tester.
- Alternating voltages (AC) are indicated by the +24 V LED
and the -24 V LED lighting up simultaneously.
- Direct voltages (DC) are indicated by the +24 V LED or the
-24 V LED lighting up. The polarity indication J shows the
polarity (+ or -) applied to the probe tip L2/+
- To differentiate between low-energy and high-energy volt-
ages (e.g. capacitively induced interference voltages), an
internal load in the voltage tester can be connected by ac-
tuating both push-buttons (see section 5).
5. Load connection with vibration motor (figure A/B)
Both handles L1
5
. Actuate both push-buttons to switch to a lower internal re-
sistance. Here, voltage is applied to a vibration motor (motor
with unbalanced mass). From approx. 200 V on, this motor is
set in rotary motion. With the voltage increasing, the motor's
speed and vibration increases as well. The duration of the test
with a lower internal resistance (load test) depends on the level
of voltage to be measured. In order to avoid an inadmissible
warming of the device, it is provided with a thermal protection
(controlled reduction). With this controlled reduction, the speed
of the vibration motor is reduced and the internal resistance
increases.
The load connection (with both push-buttons being actuated)
can be used ...
- to suppress reactive voltages (inductive and capacitive
voltages),
- to charge capacitors,
- to trip 10 mA/ 30 mA RCD safety switches. The tripping
of the RCD safety switch is done by testing the external
conductor (phase indication) to PE (earth). (figure D)
6. External conductor test (phase indication) (figure C)
- Fully grasp the handles L1
sure a capacitive coupling to earth.
- Apply the probe tip L2/+
During the single-pole external conductor test (phase in-
dication), make absolutely sure not to touch the probe tip
2
L1/-
- If an "R" symbol is shown on the LC display
nal 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 (figure E/F)
- Fully grasp both handles L1
sure a capacitive coupling to earth.
- Apply the probe tips L1/-
conductors (phases) of a three-phase mains (without actua-
tion the push-buttons
conductor voltage of e.g. 400 V is applied.
- A clockwise phase sequence (phase L1 before phase L2)
is given, if an "R" symbol is shown on the LC display
Nothing is shown on the LC display, if no clockwise phase
sequence has been detected.
- The phase sequence test always requires a countercheck!
If the LC display shows the clockwise phase sequence by
means of the "R" symbol, the LC display must show noth-
ing during the countercheck with the probe tips L1/-
and L2/+
If the LC display shows the "R" symbol in both cases, the
earthing is too weak.
Note:
The phase sequence test can be carried out in an earthed
three-phase mains from 400 V - 900 V, 50 / 60 Hz (phase to
phase) on. Protective clothing and insulating conditions on site
might impair the function.
8.

Technical data

- regulation: DIN EN 61243-3: 2015, IEC 61243-3: 2014
- nominal voltage range: 12 V to 1,000 V AC/DC
- nominal frequency range f: 0 to 60 Hz
- max. indication error: U
- Impedance (internal resistance) of measuring circuit/ load
circuit: 200 kΩ/ 5 kΩ
- current consumption of measuring circuit: I
(1,000 V)
- current consumption of load circuit: I
- polarity indication: + 24 V LED, - 24 V LED, + 12 V LED,
- 12 V LED (with push-buttons being actuated)
- external conductor test (phase indication): ≥ U
50 Hz/ 60 Hz
- phase sequence test: ≥ U
- vibration motor, start: ≥ U
02/ 2019
8
4 , the 12 V LED step (+/ -) and an internal
6
and L2
and that it remains contactless.
3
being inverted.
DUSPOL

2 and L2/-
.
5 to connect the plunger coil
7
are equipped with push-buttons
6
and L2
3
to the system part to be tested.
6
and L2
2
and L2/+
5 ) and check whether the external
±15%, ELV U
n
400 V, 50 Hz/ 60 Hz
n
200 V
n
analog 1000
®
3 to the system
3
.
7
, in order to en-
9
, the exter-
7
, in order to en-
3
to two external
+0% -15%
n
< 6,0 mA
s
< 550 mA (1,000 V)
s
9 .
2
230 V,
n
7