Phasor Diagram Display - AEMC PowerPad III 8336 User Manual

5.3.6 PHASOR DIAGRAM DISPLAY

The sub-menu displays a vector representation of the fundamentals of the voltages and currents. It indicates their
associated quantities (modulus and phase of the vectors) and the unbalances of the voltages and currents.
NOTE: The display screen varies depending on which value is selected.
● 3U: Displays a vector representation of the fundamentals of the phase-to-phase voltages and of the currents. It
indicates their associated quantities (modulus and phase of the phase-to-phase voltage vectors) and the voltage
unbalance. The reference vector of the representation (at 3 o'clock) is U1.
● 3V: Displays a vector representation of the fundamentals of the phase-to-neutral voltages and of the currents. It
indicates their associated quantities (modulus and phase of the phase-to-neutral voltage vectors) and the voltage
unbalance. The reference vector of the representation (at 3 o'clock) is V1.
● 3A: Displays a vector representation of the fundamentals of the phase-to-neutral voltages and of the currents. It
indicates their associated quantities (modulus and phase of the current vectors) and the current unbalance. The
reference vector of the representation (at 3 o'clock) is A1.
● L1/L2/L3: Displays a vector representation of the fundamentals of the phase-to-neutral voltages and the currents
of one phase. It indicates their associated quantities (modulus and phase of the current and phase-to-neutral
voltage vectors). The reference vector of the representation (at 3 o'clock) is the current vector.
Item Function
U1, U2, U3
Absolute values of the voltages at fundamental frequency
V1, V2, V3
Absolute values of the voltages at fundamental frequency
A1, A2, A3
Absolute values of the current at fundamental frequency
φ
Phase displacement of phase 1 relative to phase 2
12
φ
Phase displacement of phase 2 relative to phase 3
23
φ
Phase displacement of phase 3 relative to phase 1
31
φ
Phase displacement of voltage (V) relative to current (A)
VA
Unb
Unbalance of line voltages
NOTE: L2 and L3 display vector representations of the fundamentals of the phase-to-neutral voltages and the currents of
phases 2 and 3, respectively. They indicate their associated quantities (modulus and phase of the current and phase-to-
neutral voltage vectors of phases 2 and 3, respectively). The reference vector of the representation (at 3 o'clock) is the
current vector (A2 and A3, respectively).
Power Quality Analyzer PowerPad III Model 8336
®
Figure 5-39
69