Time Period Management; Harmonic Distortion Analysis - CARLO GAVAZZI WM5-96 - PROGRAMMING Instruction Manual

Technical specifications
46

Time period management

Meters
Total
Partial and multitariff
Tariffs
Time periods
Number of periods
Pulse output
Energy meter recording

Harmonic distortion analysis

Analysis principle
Harmonic measurement
Current
Voltage
Type of harmonics
Harmonic phase angle
4 (9-digit)
48 (9-digit)
Up to 12
Up to 24 per day
Up to 100 different days per
year
Connectable to total and/or
partial meters (multitariff)
Consumption history by
recording of the monthly
energy meters (12 previous
months). Recording of
total and partial energy
meters.
Energy meter recording
(EEPROM)
Max.999.999.999kWh/kvarh.
FFT
rd
Up to the 63 harmonic
rd
Up to the 63 harmonic
THD (V 1 and V 1- )
L L N
THD odd (V 1 and V 1- )
L L N
THD even (V 1 and V 1- )
L L N
The same for the other phases:
L2, L3.
THD (A 1)
L
THD odd (A 1)
L
THD even (A 1)
L
The same for the other phases:
L2, L3.
The instrument measures the
angle between the single har-
monic of "V" and the single
harmonic of "I" of the same
order. According to the value
of the electrical angle, it is
possible to know if the distor-
tion is absorbed or generated.
Energy Meters
Total energy meters
Monthly energy meters
Partial energy meters
Harmonic details
System
WM5-96 Instruction Manual
4 (+kWh, +kvarh, -kWh, -kvarh)
It is possible to divide each
energy meter here above listed
in 3 additional energy meters
(1 for each phase "L1-L2-L3")
48 (energy meters for
each month: "+kWh, +kvarh,
-kWh, -kvarh")
16 (using digital inputs:
max 4 tariffs).
48 (using the internal clock:
max 12 tariffs)
Note: if the system has 3
wires the angle cannot be
measured.
The harmonic contents is dis-
played as a graph showing
the whole harmonic spec-
trum. This value is also given
as a numerical information:
THD % / RMS value
THD even % / RMS value
THD odd% / RMS value
single harmonics in % /
RMS value
The harmonic distortion
can be measured in single-
phase, 3-wire or 4-wire
systems.
Tw: 0.02 sec@50Hz with-
out filter