Testing Phase Sequence - Gossen MetraWatt METRAVOLT 12D+L Mode D'emploi

4.3.2 Testing phase sequence

To determine the phase sequence between two
phases in the phase network apply both test
electrodes, clasp the handle of the display part and
proceed as follows:
- Search for the phase conductors using one pole
(see phase test).
- Apply both test electrodes to the two phase
conductors (display 400 V).
- When phase L1 is applied to the test electrode
marked (+L1) and L2 to the other test electrode
„ R" appears at the display for rotation is
clockwise. If „L" is indicated direction of rotation
is counter-clockwise.
- The test result has to be checked by exchanging
the two test electrodes. The opposite direction
of rotation must be displayed.
If 230 V is displayed instead of 400 V, the neutral
conductor may have been contacted with one of the
test electrodes.
4.4. Testing resistance and continuity
When the instrument is switched on, press button
. "OL" and "MΩ" appear on the display.
Ω / V
Securely contact the measuring points with the test
electrodes.
Resistance values 0 ...10 kΩ the measured value is
indicated on the display in "kΩ". The green LED "Ω"
lights up at the same time and an acoustic signal is
generated.
Resistance values 10 kΩ ...1,999 MΩ the measured
value is indicated on the display in "kΩ" or in "MΩ".
The LED "Ω" lights up at the same time and no
acoustic signal is generated.
Resistance values > 2 MΩ the display passes to
overflow and "OL" and "MΩ" appear on the display.
The LED does not light up and no acoustic signal is
generated.
Function to "hold" measured values (HOLD)
As long as you keep pressed button
record the latest measured resistance value on the
display.
Zero balancing
The zero point in the resistance measuring range
can be recalibrated if necessary:
Hold the test electrodes together and press and
hold button until "CAL" appears on the display
Ω / V
and the green LED "Ω" flashes.
When "000" is indicated and the LED "Ω" lights up
continuously, then calibration has been carried out
sucessfully. During this process an acoustic signal is
generated.
Note:
During continuity tests, the plus pole of the
measuring voltage is located at the test electrode
designated with +L1. The measuring current has a
constant value of 5 μA for values of 0 ... 10 kΩ; 1 μA
for 10 ... 1999 kΩ. If in this operating mode a voltage
of 24 V or more is impressed, the device switches
automatically to voltage testing.
20
you can
HOLD