6-26 L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
METERING CHAPTER 6: ACTUAL VALUES
6
These actual values display without the corresponding time stamp as they become available per the recording rate
setting. Also, the recording post-filtering setting is applied to these values.
6.4.12 PMU aggregator
ACTUAL VALUES METERING PHASOR MEASURMENT UNIT PMU AGGREGATOR 1
Actual values for the IEC 61850-90-5 PDU size are provided. These values allow you to know the approximate Ethernet
frame size for the data streams from each aggregator. This can help to estimate network loading. The PDU size shown in
the displays does not include the Ethernet, UDP, or IP layers. PDU sizes approaching approximately 1500 bytes result in
fragmented data frames, causing increased network traffic.
6.4.13 Volts per hertz
ACTUAL VALUES METERING VOLTS PER HERTZ 1(2)
This menu displays the data for volts per hertz.
PMU 1 V2:
0.000 V 0.00°
PMU 1 V0:
0.000 V 0.00°
Range: Substituted with zero if delta-connected VTs
PMU 1 IA:
0.000 A 0.00°
PMU 1 IB:
0.000 A 0.00°
PMU 1 IC:
0.000 A 0.00°
PMU 1 IG:
0.000 A 0.00°
PMU 1 I1:
0.000 A 0.00°
PMU 1 I2:
0.000 A 0.00°
PMU 1 I0:
0.000 A 0.00°
PMU 1 FREQUENCY:
0.000 Hz
PMU 1 df/dt:
0.00 Hz/s
PMU 1 CONFIG CHANGE
COUNTER: 0
Range: 0 to 65535
PMU AGGREGATOR 1
PMU AGGREGATOR 1
PDU SIZE: 0
VOLTS PER HERTZ 1
VOLTS PER HERTZ 1:
0.000 pu
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