10.22
SEL-734 Meter Instruction Manual Date Code 20090730
Communications
Command Explanations
The angles are referenced to the A-phase voltage if it is greater than 13 V
secondary; otherwise, the angles are referenced to A-phase current. The
angles range from –179.99 to 180.00 degrees.
Table 10.12 MET Command Displayed Magnitudes
Currents I
A,B,C,N
Input currents (A primary)
I
G
Residual ground current
(A primary; I
G
= 3I
0
= I
A
+ I
B
+ I
C
)
Voltages V
A,B,C
Phase-to-neutral voltage inputs
(kV primary; Form 9 only)
V
AB,BC,CA
Phase-to-phase voltages (kV primary; Form 5);
Calculated phase-to-phase voltages (kV primary;
Form 9)
V
RMS
Root-mean-square voltage
Power P (MW
A,B,C
) Single-phase megawatts real power (Form 9 only)
P (MW
3P
) Three-phase megawatts reactive power
P
AV E
(MW
A,B,C
) Single-phase megawatts averaged over one second
(Form 9 only)
P
AV E
(MW
3P
) Three-phase megawatts averaged over one second
S (MVA
A,B,C
) Single-phase apparent power (Form 9 only)
S (MVA
3P
) Three-phase apparent power
U (MVA
A,B,C
) Single-phase vector power (Form 9 only)
U (MVA
3P
) Three-phase vector power
Q (MVAR
A,B,C
) Single-phase megavars reactive power (Form 9 only)
Q (MVAR
3P
) Three-phase megavars reactive power
Q
AV E
(MVAR
A,B,C
) Single-phase megavars averaged over one second
(Form 9 only)
Q
AV E
(MVAR
3P
) Three-phase megavars averaged over one second
Power
Factor
PF
A,B,C
Single-phase power factor; leading or lagging (Form
9 voltage inputs only)
PF
3P
Three-phase power factor; leading or lagging
Sequence I
1
, 3I
2
, 3I
0
Positive-, negative-, and zero-sequence currents
(A primary)
V
1
, V
2
Positive- and negative-sequence voltages
(kV primary)
3V
0
Zero-sequence voltage (kV primary; Form 9 voltage
inputs only)
Frequency FREQ (Hz) Instantaneous power system frequency (measured on
voltage channel VA or VC)
Voltage
Deviation
VDEV
A,B,C
Phase-to-neutral percent voltage of the nominal
(nameplate) voltage (%, Form 9 only)
VDEV
AB,BC,CA
Phase-to-phase percent voltage of the nominal
(nameplate) voltage (%, Form 5 only)
Frequency
Deviation
FDEV Instantaneous power system frequency of nominal
(nameplate) frequency (%)
Courtesy of NationalSwitchgear.com