Yokogawa PC-Based MX100 User Manual
Page 559
![background image](/manuals/360310/559/background.png)
11-9
IM MX190-01E
DARWIN Constants and Types
11
Power measurement parameters
Mnemonic
Description
DAQDARWIN_POWERITEM_I0
(I1+I2+I3)/3
DAQDARWIN_POWERITEM_I1
Effective current 1
DAQDARWIN_POWERITEM_I2
Effective current 2
DAQDARWIN_POWERITEM_I3
Effective current 3
DAQDARWIN_POWERITEM_I13
(I1+I3)/2
DAQDARWIN_POWERITEM_P0
P1+P2+P3
DAQDARWIN_POWERITEM_P1
Active power 1
DAQDARWIN_POWERITEM_P2
Active power 2
DAQDARWIN_POWERITEM_P3
Active power 3
DAQDARWIN_POWERITEM_P13
P1+P3
DAQDARWIN_POWERITEM_PF0
P0/(P0
2
+VAR0
2
)
1/2
=P0/VA0
DAQDARWIN_POWERITEM_PF1
Power factor 1
DAQDARWIN_POWERITEM_PF2
Power factor 2
DAQDARWIN_POWERITEM_PF3
Power factor 3
DAQDARWIN_POWERITEM_PF13
P13/(P13
2
+VAR132)
1/2
=P13/VA13
DAQDARWIN_POWERITEM_PH0
tan
-1
(VAR0/P0)
DAQDARWIN_POWERITEM_PH1
Phase 1
DAQDARWIN_POWERITEM_PH2
Phase 2
DAQDARWIN_POWERITEM_PH3
Phase 3
DAQDARWIN_POWERITEM_PH13
tan
-1
(VAR13/P13)
DAQDARWIN_POWERITEM_V0
(V1+V2+V3)/3
DAQDARWIN_POWERITEM_V1
Effective power 1
DAQDARWIN_POWERITEM_V2
Effective power 2
DAQDARWIN_POWERITEM_V3
Effective power 3
DAQDARWIN_POWERITEM_V13
(V1+V3)/2
DAQDARWIN_POWERITEM_VA0
VA1+VA2+VA3
DAQDARWIN_POWERITEM_VA1
Apparent power 1
DAQDARWIN_POWERITEM_VA2
Apparent power 2
DAQDARWIN_POWERITEM_VA3
Apparent power 3
DAQDARWIN_POWERITEM_VA13
VA1+VA3
DAQDARWIN_POWERITEM_VAR0
VAR1+VAR2+VAR3
DAQDARWIN_POWERITEM_VAR1
Reactive power 1
DAQDARWIN_POWERITEM_VAR2
Reactive power 2
DAQDARWIN_POWERITEM_VAR3
Reactive power 3
DAQDARWIN_POWERITEM_VAR13
VAR1+VAR3
DAQDARWIN_POWERITEM_FREQ
Frequency
11.2 DARWIN Constants