Frequency - GE Multilin F650 Instruction Manual

9.7 VERIFICATION OF MEASURE
Equations to be applied for powers in a wye connection are as follows:
Apply the following current and voltage values:
APPLIED VOLTAGE AND CURRENT VALUES PER PHASE
PHASE A
VI = 50 V, 0º
Ia = 10∠45º
With the indicated voltage and current values, verify that the power measure corresponds to theoretical values indicated in
the following table:
THEORETICAL POWER VALUES
PHASE A
Pa = 353.55 MW
Qa = 353.55 MVAr
Maximum admissible error is +/-1% of the test value for P and Q, and 0.02 for cosϕ.
Frequency measure on channel VII (terminals A7-A8):
Apply 50 Vac at 50 Hz on channel VII. Maximum admissible error:+/- 10 mHz.
Apply 50 Vac at 60 Hz on channel VII. Maximum admissible error: +/- 12 mHz.
Frequency measure on channel Vx (terminals A11-A12):
Apply 50 Vac at 50 Hz on channel Vx. Maximum admissible error:+/- 10 mHz.
Apply 50 Vac at 60 Hz on channel Vx. Maximum admissible error: +/- 12 mHz.
Results:
CHANNEL
9
VII
VX
9-8
POWER PER PHASE
P=V*I*Cosϕ
Q=V*I*Senϕ
PHASE B
VII = 50 V , 120º
Ib= 10∠165º
PHASE B
Pb = 353.55 MW
Qb = 353.55 MVAr
VOLTAGE (V) SET FREQUENCY (HZ)
50 50 Hz
60 Hz
50 50 Hz
60 Hz
F650 Digital Bay Controller
9.7.3 ACTIVE, REACTIVE POWER, AND COSϑ METERING
THREE-PHASE POWER
P=Pa+Pb+Pc
Q=Qa+Qb+Qc
PHASE C V-I ANGLES
ϕ=45º
VIII = 50V, 240º
Ic = 10∠285º Cosϕ= 0.707
PHASE C THREE-PHASE
Pc = 353.55 MW P = 1060.66 MW
Qc = 353.55 MVAr Q = 1060.66 MVAr
MEASURED FREQUENCY (HZ)
9 COMMISSIONING

9.7.4 FREQUENCY

GE Multilin