Siemens SENTRON PAC4200, Руководство пользователя, Страница: 38 / 252

Description
3.6 Technical features of the supply quality
SENTRON PAC4200
38
Manual, 09/2008, A5E02316180B-01
Figure 3-6 Graph of the phasor diagram
Figure 3-7 Minimum value of the displacement angle φ with time stamp
Cosine phi
cos φ is the cosine of the displacement angle φ of the fundamental. The possible values of
cos φ are between -1 and 1.
SENTRON PAC4200 supplies the instantaneous value of cos φ, the maximum and minimum
values, and the time stamps of the maximum and minimum time values for each phase.
The values can be read out via the communication interfaces.
The display represents cos φ on several screens:
●
Value table of the phasor diagram, row "COS"
can be called with "MAIN MENU" > "PHASOR DIAGRAM" > F1
● Display "COS φ",
can be called with "MAIN MENU" > "COSφ/ φ"
An inductive cos φ is marked by a coil symbol in front of the measured value and a
capacitive cos φ by a capacitor symbol.
Figure 3-8 Value table for the phasor diagram
Figure 3-9 Maximum value of the displacement power factor cos φ with time stamp