Schweitzer Engineering SEL-351P - Energy Metering Updating and Storage; Maximum;Minimum Metering; Via Front Panel; Via Serial Port

8-30 Breaker/Recloser Monitor, Battery System Monitor, Date Code 990215
Metering, and Load Profile Functions
SEL-351P Manual Técnico
Via Front Panel
The information and reset functions available via the previously discussed serial port commands
MET E and MET RE are also available via the front-panel METER pushbutton. See the METER
pushbutton in the Pushbutton Primary Functions subsection in the Front-Panel Interface
section of the SEL-351P Quick-Start Installation and User’s Guide.
Energy Metering Updating and Storage
The SEL-351P updates energy values approximately every 2 seconds.
The control stores energy values to nonvolatile memory once per day (it overwrites the previous
stored value). Should the control completely lose control power or go into the “sleep” mode,
when power is restored, the control will restore the energy values saved at 23:50 hours on the
previous day.
Maximum/Minimum Metering
View or Reset Maximum/Minimum Metering Information
Via Serial Port
See MET M – Maximum/Minimum Metering in subsection MET Command (Metering Data)
in Section 10: Serial Port Communications and Commands. The MET M command displays
maximum/minimum metering for the following values:
Currents I
A,B,C,N
Input currents (A primary)
I
G
Residual ground current (A primary; IG = 3I0 = IA + IB + IC)
Voltages V
A,B,C
Input voltages (kV primary)
V
S
Input voltage (kV primary)
Power MW
3P
Three-phase megawatts
MVAR
3P
Three-phase megavars
The MET RM command resets the maximum/minimum metering values.
Via Front Panel
The information and reset functions available via the previously discussed serial port commands
MET M and MET RM are also available via the front-panel METER pushbutton. See the
METER pushbutton in the Pushbutton Primary Functions subsection in the Front-Panel
Interface section of the SEL-351P Quick-Start Installation and User’s Guide.