Chauvin Arnoux AEMC Instruments C.A 771 IP2X Notice De Fonctionnement page 31

„ between 100 W and 2 kW: the first four indicators on the bargraph flash.
„ between 2 kW and 60 kW: the first three indicators on the bargraph flash.
„ between 60 kW and 300 kW: the first two indicators on the bargraph flash.
„ > 300 kW: the device displays nothing and makes no sound.
2.5. PHASE DETECTION
The C.A 771 performs single-pole phase detection.. This means that you can con-
nect just one test probe to find out if a phase is present.
To operate properly, phase detection must be used on earth-referenced networks.
This means, for example, that you can locate the phase on a connector for an
earth-referenced network.
Connect the black test probe to terminal L1.
Place your hands behind the guard on the device.
Place the test probe on the element to be tested, and hold it firmly in contact.
If the test probe is on the phase, the Ph (phase) indicator flashes and the device
beeps.
Note: The fact that the Ph indicator is not flashing does not mean that there is not
a hazardous voltage on the connector.
2.6. ORDER OF PHASES
Place the black test probe on the first phase of the three-phase system and the red
test probe on the second phase. The device indicates the voltage that is present.
Press the button.
+
1400
1000
V
690
AC
DC
400
230 100Ω
Ph
127 2kΩ
ELV
+
-
50 60kΩ
24 300kΩ
L1-L2-L3
12
L1-L3-L2
31