Amprobe PQ55A Power-Analyzer - Manual (Page 15)

Two-phase Power Measurement – Type of Connection 1P3W
1) Switch on the instrument.
2)
Select the type of connection 1P3W using the “Wiring” function key
(6). After selection,
the following display is indicated with the symbol 1P3W (5.11):
Display Type of connection 1P3W
3) The measurement inputs are connected as illustrated in the following drawing:
I1
I3
I2
I4
U1 U2 U3
N
CURRENT PROBE
CAT III 600V ALL INPUT
INPUT: 0.35mV/A
0.35V MAX
L1
red
black
yellow L2
Curr
ent Supply
Consumer
Type of connection 1P3W
L1: phase 1
N: neutral conductor
L2: phase 2 G: protective earth
☞ Shaft direction (X1) (see also page 12).
☞ Current flow direction: The printed arrow on the clamp adapter must point to
the electric power supply.
☞ The printed arrow on the clamp adapter must point to the electric power supply.
Connect the test leads to the measurement instrument as follows:
1) Connect black test lead to socket N.
2) Connect red test lead to socket U1.
3) Connect yellow test lead to socket U2.
4) Connect clamp adapter 1 to socket I1.
5) Connect clamp adapter 2 to socket I2.
6) If required, connect clamp adapter 4 to socket I4.
☞ This connection can be used to monitor the protective earth current.
Now, connect the tests leads using the alligator clips and the clamp adapter to
the electric power supply to be tested.
1) Connect black test lead to neutral conductor N.
2) Connect red test lead to phase L1.
3) Connect yellow test lead to phase L2.
4) Open the clamp adapter 1 using the clamp opening lever and surround the live
phase L1.
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