User Manual

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7.5.4. L1 SIMULTANEOUS DISPLAY SCREEN
This screen displays the RMS, DC, THD, and CF values of the phase-to-neutral voltage and of the current and PST of the phase-
to-neutral voltage, and FHL and FK of the current for phase 1.
Column of voltage values simple.
RMS: true RMS value calculated
over 1 second.
DC: DC component.
THD: total harmonic distortion with
the fundamental RMS value as refer-
ence (%f) or (for the C.A 8333 only)
with the total RMS value without DC
as reference (%r).
CF: peak factor calculated over 1
second.
PST: short-term flicker calculated
over 10 minutes.
Current column.
RMS, DC (if the current sensor al-
lows), THD and CF values.
FHL: harmonic loss factor. For the
oversizing of transformers to allow
for harmonics.
FK: K factor. Derating of the trans-
former as a function of the harmon-
ics.
Figure 70: L1 simultaneous Display screen
Notes: The DC value of the current of phase 1 is displayed only if the associated current sensor can measure direct current.
L2 and L3 provide the simultaneous display of the current and voltage for phases 2 and 3, respectively.
7.6. DISPLAY OF FRESNEL DIAGRAM
The sub-menu displays a vector representation of the fundamentals of the voltages and currents. It indicates their associ-
ated quantities (modulus and phase of the vectors) and the negative-sequence voltage and current unbalance rates.
Note: To allow the display of all vectors, those of which the modulus is too small to be pictured are shown even so, but their
name is followed by an asterisk (*).
7.6.1. THE 3V FRESNEL DIAGRAM DISPLAY SCREEN
This screen 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 negative-sequence voltage un-
balance rate. The reference vector of the representation (at 3 o’clock) is V1.
Column of values for each vector
(1, 2, and 3).
|V1|, |V2| and |V3|: module of the
vectors of the fundamentals of the
phase-to-neutral voltages (phases
1, 2 and 3).
Φ
12
: phase angle of the fundamental
of phase 1 with respect to the fun-
damental of phase 2.
Φ
23
: phase angle of the fundamental
of phase 2 with respect to the fun-
damental of phase 3.
Φ
31
: phase angle of the fundamental
of phase 3 with respect to the fun-
damental of phase 1.
Fresnel diagram.
Discs indicating potential saturation
of the channel.
Vunb: negative-sequence voltage unbalance rate.
Figure 71: The screen Displaying the Fresnel diagram in 3V