GE MiCOM P145 Agile User Manual

4 MEASUREMENTS
4.1 MEASURED QUANTITIES
The device measures directly and calculates a number of system quantities, which are updated every second. You
can view these values in the r
elevant MEASUREMENT columns or with the Measurement Viewer in the settings
application software. Depending on the model, the device may measure and display some or more of the following
quantities:
● Measured and calculated analogue current and voltage values
● Power and energy quantities
● Peak, fixed and rolling demand values
● Frequency measurements
● Thermal measurements
4.1.1 MEASURED AND CALCULATED CURRENTS
The device measures phase-to-phase and phase-to-neutral current values. The values are produced by sampling
the analogue input quantities, conv
er
ting them to digital quantities to present the magnitude and phase values.
Sequence quantities are produced by processing the measured values. These are also displayed as magnitude and
phase angle values.
These measurements are contained in the MEASUREMENTS 1 column.
4.1.2 MEASURED AND CALCULATED VOLTAGES
The device measures phase-to-phase and phase-to-neutral voltage values. The values are produced by sampling
the analogue input quantities, conv
er
ting them to digital quantities to present the magnitude and phase values.
Sequence quantities are produced by processing the measured values. These are also displayed as magnitude and
phase angle values.
These measurements are contained in the MEASUREMENTS 1 column.
4.1.3 POWER AND ENERGY QUANTITIES
Using the measured voltages and currents the device calculates the apparent, real and reactive power quantities.
These ar
e pr
oduced on a phase by phase basis together with three-phase values based on the sum of the three
individual phase values. The signing of the real and reactive power measurements can be controlled using the
measurement mode setting. The four options are defined in the following table:
Measurement Mode Parameter Signing
0
(Default)
Export Power
Impor
t P
ower
Lagging Vars
Leading VArs
+
–
+
–
1
Export Power
Import P
ower
Lagging Vars
Leading VArs
–
+
+
–
2
Export Power
Import P
ower
Lagging Vars
Leading VArs
+
–
–
+
P14x Chapter 14 - Monitoring and Control
P14xEd1-TM-EN-1 317

GE MiCOM P145 Agile Specifications

General

Brand	GE
Model	MiCOM P145 Agile
Category	Control Unit
Language	English