31
2.2.4. CONNECTING THE MA130
Proceed as for the MA110:
Connect the output leads to a measuring instrument.
Put the electronic unit into operation by turning the switch to some position. The green
On
indicator
starts blinking.
OFF
30 A
300 A
3000 A
On
Open the 3 sensors and place them on the 3 phases.
L3
L2
L1
L1
L2
L3
P
Set the switch on the electronic unit to the range providing the best sensitivity and check that the red
OL
indicator is off (saturation of the electronics entailing a measurement error).
Read the measurement on the display device and apply the reading coefficient indicated on the label
on the electronic unit corresponding to the setting of the switch.
30 A~ range
100 mV~/A~
300 A~ range
10 mV~/A~
3000 A~ range
1 mV~/A~
2.2.5. DISCONNECTING THE MA130
Withdraw the 3 sensors from the 3 conductors, set the switch to
OFF,
and disconnect the electronic unit
from the display device.
