GE RPV311 Technical Manual page 123

RPV311
RPV311-TM-EN-7
+
S
−
S
U
F
THD
¹ Is not calculated for circuits of 1 element without 3-phase synthesis.
² Is not calculated for neutral circuits.
The fundamental frequency of the input signal must be within a range of ± 6 Hz of
the nominal frequency of the electrical system.

Power Measurement:
Power measurement is computed based on the values of a voltage circuit and a
current circuit. The following values are computed once per cycle:
Voltage and current measurement
S
Combined apparent power
S
Fundamental apparent power
1
P
Phasors ¹
1
Q
Phasors (neutral) ¹
1
Reactive power has a positive sign for circuits with inductive characteristics and a
negative sign for circuits with capacitive characteristics.

DC Transducers Measurement:
The RMS value of the DC channels (transducers) is calculated once per cycle.

High-speed Voltage Measurement:
There is an 8-bit opto-isolated analog-to-digital converter, independent for each
channel. The acquisition is performed with 5 MHz sampling frequency (high-speed
channels), that means one acquisition each 200 ns.
Positive sequence ¹ ²
Negative sequence ¹ ²
Imbalance ¹ ²
Fundamental frequency ²
Total harmonic distortion ²
Chapter 5 – Operation
123