12-8
Standard Event Reports and SER
Date Code 990215
SEL-351P Manual Técnico
Current, Voltage, and Frequency Columns
Table SECTION 12: .2 summarizes the event report current, voltage, and frequency columns.
Table SECTION 12: .2: Standard Event Report Current, Voltage, and Frequency
Columns
Column Heading
Definition
IA
Current measured by channel IA (primary A)
IB
Current measured by channel IB (primary A)
IC
Current measured by channel IC (primary A)
IG
Calculated residual current IG = 3I
0
= IA + IB + IC (primary A)
VA
Voltage measured by channel VA (primary Kv, wye-connected)
VB
Voltage measured by channel VB (primary kV, wye-connected)
VC
Voltage measured by channel VC (primary kV, wye-connected)
VS
Voltage measured by channel VS (primary kV)
Freq
Frequency of voltage channel VA (Hz)
Note that the ac values change from plus to minus (-) values in Figure SECTION 12: .2,
indicating the sinusoidal nature of the waveforms.
Other figures help explain the information available in the event report current columns:
Figure SECTION 12: .3: shows how event report current column data relates to the actual
sampled current waveform and RMS current values.
Figure SECTION 12: .4: shows how event report current column data can be converted to
phasor RMS current values.
Output, Input, Protection, and Control Columns
Table SECTION 12: .3 summarizes the event report output, input, protection, and control
columns. See Tables 9.3 and 9.4 in
Section 9: Setting the SEL-351P Recloser Control
for more
information on Relay Word bits shown in Table SECTION 12: .3.
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