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PQA400 - PQA823 - PQA824
EN - 31
5.2.6. HARM analysis screens
Starting from any page of numerical values it’s possible to enter harmonics numerical
values and histogram graphics screens section for voltage and current input signals by
pressing F2 key (or touch HARM at display). By pressing cyclically F1 key the below
screens are shown by meter:
Harmonics values of V1, V2, V3 voltages and neutral voltage Vn (for three phase 4-
wire system), currents I1, I2, I3 and neutral current In (for three phase 4-wire system,
not available for PQA400) with THD% values both with histogram graphics and with
numerical values in percentage or absolute value, (see § 0 as below shown:
12/09/2006 – 16:55:10
TOTAL HARM VOLTAGE – Page 1/5
h 01
Fs 100%
V1h
100.0 %
V2h
100.0 %
V3h
100.0 %
Vnh
0.0 %
Thd
6.5 %
Thd
5.9 %
Thd
4.3 %
Thd
0.0 %
PAGE
HARM I
TABLE
HARM PAG
12/09/2006 – 16:55:10
TOTAL HARM VOLTAGE – Page 1/5
h 01
Fs 400.0V
V1h
228.6V
V2h
225.1V
V3h
230.7V
Vnh
0.0V
Thd
6.5 %
Thd
5.9 %
Thd
4.3 %
Thd
0.0 %
PAGE
HARM I
TABLE
HARM PAG
Fig. 57: Harmonic analysis of voltages in percentage/absolute values for 4-wire systems
12/09/2006 – 16:55:10
TOTAL HARM VOLTAGE – Page 1/4
h 01
Fs 100%
V12h
100.0 %
V23h
100.0 %
V31h
100.0 %
Thd
6.5 %
Thd
5.9 %
Thd
6.5 %
PAGE
HARM I
TABLE
HARM PAG
12/09/2006 – 16:55:10
TOTAL HARM VOLTAGE – Page 1/4
h 01
Fs 400.0V
V12h
328.4V
V23h
389.6V
V31h
386.6V
Thd
6.5 %
Thd
5.9 %
Thd
4.3 %
PAGE
HARM I
TABLE
HARM PAG
Fig. 58: Harmonic analysis of voltages in percentage/absolute values for 3-wire and ARON
12/09/2006 – 16:55:10
PHASE1 HARM VOLTAGE – Pag 1/2
h 01
Fs 100%
V1h
100.0 %
Thd
6.5 %
PAGE
HARM I
TABLE
HARM PAG
12/09/2006 – 16:55:10
PHASE1 HARM VOLTAGE – Pag 1/2
h 01
Fs 400.0V
V1h
228.6V
Thd
6.5 %
PAGE
HARM I
TABLE
HARM PAG
Fig. 59: Harmonic analysis of voltages in percentage/absolute values for Single phase
In all case the full scale of graphs is automatically set from meter depending on measured
values.
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www.
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