
Manual 37139C
UMT 1 - Measuring Transducer
Page 44/62
© Woodward
Appendix D.
Measured Quantities and Accuracy
Measuring value
Display/range
Accuracy
Note
Frequency
f
L1
, f
L2
, f
L3
40.0 to .80.0 Hz
0.05 Hz
Voltage
V
L1
, V
L2
, V
L3
, V
L12
, V
L23
, V
L31
0 to 520 V / 0 to 65 kV
0.5 %
Accuracy depending on the
configured transformer ratio
Current
I
L1
, I
L2
, I
L3
0 to 9,999 A
0.5 %
Accuracy depending on the
configured transformer ratio
Real power
Total active power value
-32.0 to 32.0 MW
1 %
Accuracy depending on the
configured transformer ratio
Reactive power
Actual value in L1, L2, L3
-32.0 to 32.0 Mvar
1 %
Accuracy depending on the
configured transformer ratio
Apparent power
Actual value in L1, L2, L3
0 to 45.0 MVA
1 %
Accuracy depending on the
configured transformer ratio
Power factor cos
ϕ
Actual cos
ϕ
L1
i0.00 to 1.00 to c0.00
1.5°
Miscellaneous
Active power
0 to 4.200 GWh
Not PTB standardized
Active power (pulse)
Pulse output
Reactive power
0 to 4.200 Gvarh
Not PTB standardized
Reactive power (pulse)
Pulse output
Reference conditions:
The data apply to the following reference conditions:
•
Input voltage = sinusoidal rated voltage
•
Input current = sinusoidal rated current
•
Frequency = rated frequency ± 2 %
•
Power supply = rated voltage ± 2 %
•
Power factor cos
ϕ
= 1
•
Ambient temperature 23 °C ± 2 K
•
Warm-up period = 20 minutes.