14.40
SEL-400 Series Relays Instruction Manual Date Code 20171006
ASCII Command Reference
Command Description
If the relay is not in the high-accuracy IRIG (HIRIG) timekeeping mode, it will
respond to the MET PM command with the following message:
Aborted: A High Accuracy Time Source is Required
If Global enable setting EPMU := N, the relay will respond to the MET PM
command with:
Synchronized phasor measurement is not enabled
To request a report of the synchrophasor data at a specific time, enter the optional
time parameter as a time of day. For example, the relay will respond to the MET
PM 16:40:10 command with:
Synchronized Phasor Measurement Data Will Be Displayed at
16:40:10.000
In this example, when the internal clock reaches 16:40:10.000, the relay will dis-
play the synchrophasor data from that exact time. If the relay is not in HIRIG
mode at that time, it will display the following message:
Aborted: A High Accuracy Time Source is Required
After the MET PM time command is issued, other MET PM commands may be
entered without affecting the timed request, even if the stated time has not
arrived. However, issuing a second MET PM time command while the first com-
mand is still pending will cancel the first command request in favor of the newer
request.
If you are not connected to the relay when the MET PM time command issues its
timed response, you can use the MET PM HIS command to view this response.
This permits you to issue MET PM time to multiple relays using a common time
and then go back later to see the results from all the relays at this common instant
in time.
See Section 18: Synchrophasors for more information on phasor measurement
functions, and View Synchrophasors by Using the MET PM Command on
page 18.21 for sample MET PM responses.
MET PMV
Use the MET PMV command to view the protection math variables.
The relay displays three places after the decimal point for these numerals. The
relay shows variables with absolute value greater than 99999.999 or less than
0.100 as scientific notation (for example, –1.002E+22).
MET PM time Display time-synchronized values captured at trigger time. 1, B, P, A, O, 2
MET PM HIS Display time-synchronized values captured for the previ-
ous MET PM command.
1, B, P, A, O, 2
Table 14.91 MET PM Command (Sheet 2 of 2)
Command Description Access Level
Ta b l e 1 4.92 M E T P M V Com m a n d
Command Description Access Level
MET PMV Display all protection math variables. 1, B, P, A, O, 2
MET PMV k Display all protection math variables. 1, B, P, A, O, 2
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