HT instruments XL424 - Manual (Page 10)

XL423 - XL424
EN - 9
6.2 USING THE INSTRUMENT IN A THREE PHASE 4-WIRES PLANT
WARNING
The Instrument can be used in installation with overvoltage CAT III 600V~
between the inputs and to ground. Do not attempt to take any voltage
measurements exceeding the limits indicated in this manual. Exceeding the
limits could cause electrical shock or damage to the instrument.
Blu
Blue
Azul
Nero
Black
Negro
Rosso
Red
Rojo
Blu
Blue
Azul
Nero
Black
Negro
Grigio
Grey
Gris
Fig. 3: Instrument’s connection in Three Phase 4-wires plant
WARNING
De-energize the plant under test before connecting the instrument. Take all
the safety precautions before taking actions on the plant.
1. De-energize the plant under test before connecting the meter.
2. Inserting alligator clips in the safety banana test leads.
3. Connecting alligator clips in the plant as indicated in Fig. 3.
4. Re-energize the plant under test .
5. How to start a Recording:
• If no recording was performed or if the recording data was already downloaded to a
PC, pressing and keeping the START/STOP key for 3 seconds. The STATUS LED
will be lighting for the same time, than will be stable lighting for 1 second and the
meter will start the recording.
• If the recording data was not already downloaded to a PC but the operator wants
to overwrite these data, pressing and keeping the START/STOP key for 6
seconds. The STATUS LED will be quickly blinking during the key pressing for the
same time, than the LED will be stable lighting for 1 second and the instrument will
start the recording. The old recording will be deleted and overwritten by the new
one. The meter will wait for the next minute beginning (second=00) and the STATUS
LED is double blinking. After that the recording starts and the STATUS LED blinks
every 3 seconds. The instrument is storing the data.