Vega78, En - 32, Fig. 67: vectorial diagram total for 4-wire system – HT instruments VEGA78 User Manual

Page 34

Advertising
background image

VEGA78

EN - 32

12/09/2006 – 16:55:10

PHASE1 HARM CURRENT – Pag 2/5

h 03

Fs 100 %
I1h

45.3 %

Thd

35.5 %

PAGE

HARM V

TABLE

HARM PAG

12/09/2006 – 16:55:10

PHASE1 HARM CURRENT – Pag 2/5

h 03

Fs 200.0 A
I1h

90.6 A

Thd

35.5 %

PAGE

HARM V

TABLE

HARM PAG

Fig. 66: Harmonic analysis of current I1 in percentage/absolute values for 4-wire system


5.2.7. Vectorial diagrams screens
Starting from a any page of numerical values it’s possible to select the vectorial diagrams
screens of voltage and currents by pressing F4 key (or touch “VECTORS” at display). The
aim of this feature is to show, with numerical and graphical indications, the phase angles,
expressed in degree [°] between the three voltages V1, V2 and V3 and the currents I1, I2
and I3 in order to understand in each moment the inductive or capacitive loads nature of
electrical installations. By pressing cyclically F1 key the below screens are shown by
meter:

Vectorial diagram total of phase angles among V1, V2, V3 and between V1-I1, V2-I2,

V3-I3 more than indication of percentage values of “NEG%” e “ZERO%” parameters
(see § 10.3):

12/09/2006 – 16:55:10

TOTAL DIAGRAM – Page 1/6

NEG 0.0 %

ZERO

0.0 %

V1^

V2

120.0°

V2

^

V3

120.0°

V3

^

V1

120.0°

V1^ I1

60.0°

V2^ I2

60.0°

V3^ I3

60.0°

PAGE

Fig. 67: Vectorial diagram total for 4-wire system


12/09/2006 – 16:55:10

TOTAL DIAGRAM – Page 1/6

NEG 0.0 %

ZERO

0.0 %

V12^

V23

120.0°

V23

^

V31

120.0°

V31

^

V12

120.0°

V1^ I1

60.0°

V2^ I2

60.0°

V3^ I3

60.0°

PAGE

Fig. 68: Vectorial diagram total for 3-wire and ARON systems

Advertising