HT instruments VEGA78 User Manual

Page 52

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VEGA78

EN - 50

5.4.6.2. Harmonics: sub-levels description

Press F1 key (alternatively touch CLP/EXP at display) to expand or compress the
harmonics sub-levels. The parameters inside sub-levels are strictly depending on type of
selected system (see § 5.3.1). Below there are some pictures of different possible
situations:

12/09/2006 – 16:55:10

RECORDING SETTINGS

- Harmonics

- 

Voltages

THD

DC

+

Odd

+

Even

162/251 Parameters – Autonomy: 19d 0h

CLP/EXP

PREDEF.

SEL

MODIFY

Fig. 95: Harmonics sub-levels: initial parameters selection


Inside Harmonics level there is another sub-level where an accurate selection of harmonic
parameters is possible. Move the cursor on “Odd” or “Even” using arrows key and press
F1 key (or touch CLP/EXP at display). The result, referred to Odd harmonics is below
shown:

12/09/2006 – 16:55:10

RECORDING SETTINGS

-

Odd

Harmonic1

Harmonic3

Harmonic5

Harmonic7

Harmonic9

162/251 Parameters – Autonomy: 19g 0h

CMP/EXP

PREDEF.

SEL

MODIFY

Fig. 96: Harmonics sub-levels: odd harmonics selection

Press F3 key (alternatively touch SEL at display) to select/unselect the desired
parameters. The number of selected and recording autonomy are automatically updated
from meter. The below harmonic parameters can be selected for recording (see § 10.2):

Type of system

Selectable parameters

Single phase

THD%, DC, h01

h49 (V1N, VN-PE, I1)

Three phase 4-wire

THD%, DC, h01

h49 (V1N, V2N, V3N, VN-PE, I1, I2,

I3, IN)

Three phase 3-wire

THD%, DC, h01

h49 (V12, V23, V31, I1, I2, I3)

Three phase 3-wire ARON

THD%, DC, h01

h49 (V12, V23, V31, I1, I2, I3)

Table 6: Selectable parameters of harmonic analysis

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