12.23
Date Code 20171021 Instruction Manual SEL-421 Relay
Analog Quantities
IASPMID, IBSPMID,
ICSPMID
Synchrophasor current imaginary component, Terminal W, delayed
for RTC alignment
Amperes [A] (primary)
I1WPMMD Positive sequence synchrophasor current magnitude, Terminal W,
delayed for RTC alignment
Amperes [A] (primary)
I1XPMMD Positive sequence synchrophasor current magnitude, Terminal X,
delayed for RTC alignment
Amperes [A] (primary)
I1SPMMD Positive sequence synchrophasor current magnitude, Terminal S,
delayed for RTC alignment
Amperes [A] (primary)
I1WPMAD Positive sequence synchrophasor current angle, Terminal W, delayed
for RTC alignment
Degrees [°] (±180)
I1XPMAD Positive sequence synchrophasor current angle, Terminal X, delayed
for RTC alignment
Degrees [°] (±180)
I1SPMAD Positive sequence synchrophasor current angle, Terminal S, delayed
for RTC alignment
Degrees [°] (±180)
I1WPMRD Positive sequence synchrophasor current real component,
Terminal W, delayed for RTC alignment
Amperes [A] (primary)
I1XPMRD Positive sequence synchrophasor current real component,
Terminal X, delayed for RTC alignment
Amperes [A] (primary)
I1SPMRD Positive sequence synchrophasor current real component,
Terminal S, delayed for RTC alignment
Amperes [A] (primary)
I1WPMID Positive sequence synchrophasor current imaginary component,
Terminal W, delayed for RTC alignment
Amperes [A] (primary)
I1XPMID Positive sequence synchrophasor current imaginary component,
Terminal X, delayed for RTC alignment
Amperes [A] (primary)
I1SPMID Positive sequence synchrophasor current imaginary component,
Terminal S, delayed for RTC alignment
Amperes [A] (primary)
SODPMD Second of day of the synchrophasor data packet, delayed for RTC
alignment
Seconds [s]
FOSPMD Fraction of second of the synchrophasor data packet, delayed for
RTC alignment
Seconds [s]
FREQPMD Frequency for synchrophasor data, delayed for RTC alignment Hertz [Hz]
DFDTPMD Rate-of-change of frequency for synchrophasor data, delayed for
RTC alignment
Hertz/seconds [Hz/s]
RTCAP01–RTCAP32 Channel A remote synchrophasor phasors (unit depends on remote
synchrophasor contents)
N/A
RTCBP01–RTCBP32 Channel B remote synchrophasor phasors (unit depends on remote
synchrophasor contents)
N/A
RTCAA01–RTCAA08 Channel A remote synchrophasor analogs (unit depends on remote
synchrophasor contents)
N/A
RTCBA01–RTCBA08 Channel B remote synchrophasor analogs (unit depends on remote
synchrophasor contents)
N/A
RTCFA Channel A remote frequency (from remote synchrophasors) Hertz [Hz]
RTCFB Channel B remote frequency (from remote synchrophasors) Hertz [Hz]
RTCDFA Rate-of-change of Channel A remote frequency (from remote
synchrophasors)
Hertz/seconds [Hz/s]
RTCDFB Rate-of-change of Channel B remote frequency (from remote
synchrophasors)
Hertz/seconds [Hz/s]
Table 12.2 Analog Quantities Sorted by Function (Sheet 12 of 13)
Labels Description Unit
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