CHAPTER 6: ACTUAL VALUES
METERING
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
6-19
6
This menu displays metered values for real, reactive, and apparent power, as well as power factor. The "SRC 1" text is
replaced by the name programmed by the user for the associated source (see
SETTINGS
SYSTEM SETUP
SIGNAL
SOURCES
).
When VTs are configured in wye, the B30 calculates power in each phase and three-phase power is measured as
S = V
A
x Î
A
+ V
B
x Î
B
+ V
C
x Î
C
Eq. 6-1
When VTs are configured in delta, the B30 does not calculate power in each phase and three-phase power is measured as
S = V
AB
x Î
A
+ V
CB
x Î
C
Eq. 6-2
where
S is the apparent power
V
A
, V
B
, V
C
, I
A
, I
B
, I
C
are phase voltage and phase current phasors
V
AB
and V
CB
are phase-to-phase voltage phasors
Î is the conjugate of I
6.4.3.7 Energy metering
ACTUAL VALUES
METERING
SOURCE SRC 1
ENERGY
SRC 1 REACTIVE PWR
φ
a: 0.000 var
SRC 1 REACTIVE PWR
φ
b: 0.000 var
SRC 1 REACTIVE PWR
φ
c: 0.000 var
SRC 1 APPARENT PWR
3
φ
: 0.000 VA
SRC 1 APPARENT PWR
φ
a: 0.000 VA
SRC 1 APPARENT PWR
φ
b: 0.000 VA
SRC 1 APPARENT PWR
φ
c: 0.000 VA
SRC 1 POWER FACTOR
3
φ
: 1.000
SRC 1 POWER FACTOR
φ
a: 1.000
SRC 1 POWER FACTOR
φ
b: 1.000
SRC 1 POWER FACTOR
φ
c: 1.000
ENERGY
SRC 1
SRC 1 POS WATTHOUR:
0.000 Wh
SRC 1 NEG WATTHOUR:
0.000 Wh
SRC 1 POS VARHOUR:
0.000 varh
SRC 1 NEG VARHOUR:
0.000 varh
Summary of Contents for b30
Page 10: ...x B30 BUS DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Page 486: ...5 278 B30 BUS DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Page 616: ...iv B30 BUS DIFFERENTIAL SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...
Page 632: ...xvi B30 BUS DIFFERENTIAL SYSTEM INSTRUCTION MANUAL INDEX ...