13
1.8 Four Quadrant Representation
The angle(Ø) between voltage and current provides us information about the direction of energy
flow. A positive sign for active/reactive power indicates that active/reactive power is consumed. And
also a negative sign for active/reactive power indicates that active/reactive power is generated.
Meters
Imp. Active &
Imp. Reactive
Active Power
Reactive Power
Meters
Exp. Active &
Imp. Reactive
QUADRANT -1
P => positive
Q => positive & inductive
CosØ => inductive
PF => positive
QUADRANT -2
P => negative
Q => positive & capacitive
CosØ => capacitive
PF => negative
Meters
Imp. Active &
Exp. Reactive
Meters
Exp. Active &
Exp. Reactive
QUADRANT -4
P => positive
Q => negative & capacitive
CosØ => capacitive
PF => positive
QUADRANT -3
P => negative
Q => negative & inductive
CosØ => inductive
PF => negative
S
P
Q
Fig. 1-5 Four Quadrant Representation
NOTE:
If the signs of active and reactive power are examined, it can be defined the quadrant that
POWYS measures.
In order to understand P and Q signs in POWYS 10xx and POWYS 11xx, instantaneous displays for P
and Q must be checked.
If active power display is seem constantly, it means active power(P) is positive. If it is blinked, it
means active power(P) is negative.
If reactive power(Q) display is seem constantly, it means reactive power(Q) is positive. If it is
blinked, it means reactive power(Q) is negative.
NOTE:
Signs of P and Q can be reached through modbus communication.
11
e.g.;
P= +10kW, Q= +5kVAr
=> Quadrant-1
P= -10kW, Q= +5kVAr
=> Quadrant-2
P= -10kW, Q= -5kVAr
=> Quadrant-3
P= +10kW, Q= -5kVAr
=> Quadrant-4
SECTION 1 GENERAL INFORMATION
Summary of Contents for POWYS 1012
Page 1: ...1 USER MANUAL Energy Analyzer...
Page 4: ...4 SECTION 1 GENERAL INFORMATION Enerji Analiz r...
Page 14: ...14 SECTION 2 INSTALLATION Energy Analyzer...
Page 17: ...17 SECTION 2 INSTALLATION 2 4 Dimensions mm Fig 2 3 Dimensions...
Page 18: ...18 SECTION 3 MENUS Energy Analyzer...
Page 34: ...34 SECTION 4 RS485 COMMUNICATION Energy Analyzer...
Page 42: ...42 SECTION 5 FACTORY PREVALUES AND SETT NG RANGES Energy Analyzer...
Page 47: ...47 SECTION 6 TECHNICAL SPECIFICATIONS Energy Analyzer...