44
6. HARMONIC
The Harmonic mode displays a representation of the harmonic levels of the voltage, current, and apparent power, order by
order. It can be used to determine the harmonic currents produced by nonlinear loads and analyze problems caused by harmon-
ics according to their order (overheating of neutrals, conductors, motors, etc.).
Figure 51: Harmonics mode screen
6.1. PHASE-TO-NEUTRAL VOLTAGE
The V sub-menu displays the harmonics of the phase-to-neutral voltage only for sources having a neutral.
The choice of curves to be displayed depends on the type of connection (see §4.6):
Single-phase, 2-wire: no choice (L1)
Single-phase, 3-wire: L1, N
Split-phase, 3-wire: 2L, L1, L2
Split-phase, 4-wire: 2L, L1, L2, N
Three-phase, 4-wire: 3L, L1, L2, L3, -,+
Three-phase, 5-wire: 3L, L1, L2, L3, N, -,+
The screen captures shown as examples are those obtained with a 5-wire three-phase connection.
6.1.1. THE 3L PHASE-TO-NEUTRAL VOLTAGE HARMONICS DISPLAY SCREEN
Analysis of harmonics of the phase-
to-neutral voltage (see §6.1).
Analysis of harmonics of the current
(see §6.2).
Analysis of the apparent power of
the harmonics (see §6.3).
Analysis of the harmonics of the
phase-to-phase voltage (see §6.4).
Select the filters and the expert
mode (see §6.5). Use the or
key to select the display.
This information concerns the har-
monic pointed to by the cursor.
V-h03: harmonic number.
%: level of harmonics with the fun-
damental RMS value as reference
(%f) or the (total) RMS value as
reference (%r).
V: RMS voltage of the harmonic in
question.
+000°: phase shift with respect to
the fundamental (order 1).
The horizontal axis indicates the
orders of the harmonics. The level of
the harmonic is given as a percent-
age with respect to the fundamental
or to the total RMS value.
DC: DC component. 1 to 25: har-
monics of order 1 to 25. When the
cursor exceeds order 25, order 26
to 50 appears.
Harmonic selection cursor. Use the
or key to move the cursor.
Display of the 3 phases 3L, of L1,
L2, L3, N, or of the expert mode
(three-phase connection only - see
§6.5). To select the display press the
or key.
Figure 52: example of 3L phase-to-neutral voltage harmonics display
To Next Page
Loading...
Need help?
General
