HT instruments XL424 - Manual (Page 12)

XL423 - XL424
EN - 11
6.3 USING THE INSTRUMENT IN A THREE PHASE 3-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
Blu
Blue
Azul
Nero
Black
Negro
Rosso
Red
Rojo
Blu
Blue
Azul
Nero
Black
Negro
Grigio
Grey
Gris
Fig. 4: Instrument’s connection in Three Phase 3-wires plant – Possible cases
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. 4.
4. Re-energize the plant under test.