Amprobe PQ55A Power-Analyzer - Manual (Page 13)

Single-phase Power Measurement – Type of connection 1P2W
1) Switch on the instrument.
2) Select the type of connection 1P2W using the “Wiring” function key
(6). After selection, the following display is indicated with the symbol
1P2W (5.11):
Display type of connection 1P2W
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 AL L INPUT
INPUT: 0.35mV/A
0.35V MAX
L1
red
black
Curr
ent Suppl
y
Consumer
Type of connection 1P2W
L1: phase
N: neutral conductor
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.
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 clamp adapter 1 to socket I1.
4) 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 and the clamp adapter to the electric power supply
to be tested using
the alligator clips.
1) Connect black test lead to neutral conductor N.
2) Connect red test lead to phase L1.
3) Open the clamp adapter 1 using the clamp opening lever and surround the live
phase L1.
☞ Make sure that the clamp completely surrounds the conductor and that there
is no air gap.
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