E N G L I S H
20
Measurement Connections
(3ø, 4 wire)
7. THREE - PHASE
ADAPTOR
(OPTIONAL)
NOTE: The three-phase adaptor should be used
with the Model 370 only.
The three-phase adaptor generates
an artificial neutral point when the
Model 370 measures:
• The true power (kW)
• The apparent power (kVA)
• The power factor (cos )
In either Balanced or Unbalanced
3-phase / 3-wire system.
Measurement Connections in a
Balanced 3-phase / 3-wire system.
1. Set the Model 370 at kW (or kVA or
Cos ) range position.
2. Hook-on the 3-phase adaptor to
the input jacks of the Model 370.
3. Clamp the jaws around One phase
wire and apply the Red test leads
to the same wire and the two Black
test leads to the other two wires
respectively.
4. Read the displayed value. In order
to get the total value, multiply the
displayed value by 3.
Measurement Connections in
a Unbalanced 3-phase / 3-wire
system.
