Camille Bauer PQ3K Operating Instructions Manual page 30

b) Phasor verification: The phasor diagram shows a technical visualization of the current and voltage
phasors, using a counter-clockwise rotation, independent of the real sense of rotation.
The diagram is always built basing on the voltage of
the reference channel (direction 3 o'clock)
P10 Rev A Device handbook LINAX PQ3000-PQ5000
Correct installation (expectation)
 Voltage sequence in clock-wise order
  (0°  -120°  120°)
L1 L2 L3
 Current sequence in clock-wise order
 
L1 L2 L3
 Similar angle between voltage and current phasors in all
phases (approx. -20°)
What's wrong?
 Voltage sequence:

L1 L2
 Current sequence: L1
L3
expected sequence
 Angle U-I: Angle between U
wrong
Required correction
Reversing the polarity of current I
What's wrong?
 Voltage sequence: L1
L3
interchanged
 Current sequence:

L1 L2
 Angle U-I: Angles between U
correspond to the expectations
Required correction
Exchanging the connections of the voltages L2 and L3
What's wrong?
 Voltage sequence: L1
L3
exchanged
 Current sequence: L1
L3
expected sequence
 Angle U-I: Angles between U
correspond to the expectations
Required correction
Exchanging the connections of the voltages L2 and L3 and
reversing the polarity of the current input I
What's wrong?
 Voltage sequence:

L1 L2
 Current sequence:

L3 L1
 Angle U-I: The U-I angles do not correspond to the
expectation, but are similar
Required correction
Cyclical exchange of the voltage connections: L1L3,
L2L1, L3L2. As an alternative the sequence of all
currents may be changed as well (more effort required).

L3
 L2; Current L2 is out of the
and I is approx. 180°
L2 L2
2
 L2; L3 and L2 seems to be

L3
/ I and U / I do not
L2 L2 L3 L3
 L2; L3 and L2 seems to be
 L2; Current L2 is out of the
/ I and U / I do not
L2 L2 L3 L3
2

L3

L2
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