User manual

PQ3350 V5.2 11/10 21
V1 is the reference. The V1 angle is always 0 degrees.
The phase angles of V2, V3, I1, I2, and I3 are displayed with respect to V1.
V1, V2, V3, I1, I2, I3, V12, V23, and V31 are displayed in vector form graphically.
V1, V2, V3: Phase voltages in phase format with respect to V1
I1, I2, I3: Line currents in phase format with respect to V1.
IVn: Calculated voltage and current of the neutral with respect to ground.
V12, V23, V31: Line voltage in phase format with respect to V1.
Ave: Average of line voltage V12, V23, and V31 and line current I1, I2, and I3
dV%: Historical maximum % value of (Max (V1, V2, V3) – Min (V1, V2, V3)) / Min (V1, V2, V3) * 100%
VUR: Voltage (Unbalanced Ratio)
d02: The first number is Zero Sequence Unbalanced Ratio in % (d0) of voltage; the second number is the
Negative Sequence Unbalanced Ratio in % (d2) of voltage. When VUR is displayed before d02, d02
represents the Zero and Negative Sequence Unbalanced Ratios for voltage.
REF: nominal voltage for transient detection reference
Sd%: threshold in % for transient detection with respect to nominal voltage (REF).
NOTE: The
phase
is drawn only when the readin
g exceeds
200 counts. If V is zero, the
phase
of
the
current
will not be drawn.
Press this button to change the display from VUR to IUR
dA%: Historical max % value of (Max (I1, I2, I3) – Min (I1, I2, I3) ) / Min (I1, I2, I3) * 100%
IUR: Current Unbalance Ratio
d02: The first number is Zero Sequence Unbalanced Ratio in % (d0) for current; the second number is the
Negative Sequence Unbalanced Ratio in % (d2) for current. When IUR is displayed before d02, d02
represents the Zero (d0) and Negative (d2) Sequence Unbalanced Ratios for current.
REF: Nominal voltage for transient detection reference
Sd%: Threshold in % for transient detection with respect to nominal voltage (REF).