Schweitzer Engineering Laboratories SEL-751 - Figure 5.4 METER E Command Response; Figure 5.5 METER RE Command Response; Table 5.4 Maximum;Minimum Meter Values

5.7
Date Code 20170927 Instruction Manual SEL-751 Relay
Metering and Monitoring
Metering
Figure 5.4 shows the device response to the METER E command.
To reset energy meter values, issue the METER RE command as shown in
Figure 5.5.
Energy metering values are stored to nonvolatile memory four times per day
and within one minute of the energy metering values being reset.
Maximum and
Minimum Metering
Maximum and minimum metering allows you to determine maximum and
minimum operating quantities such as currents, voltages, power, analog input
quantities, RTD quantities and frequency. Table 5.4 lists the max/min
metering quantities.
=>MET E <Enter>
SEL-751 Date: 12/01/2010 Time: 15:43:28
FEEDER RELAY Time Source: External
Energy
MWh3P-IN (MWh) 1.325
MWh3P-OUT (MWh) 135.660
MVARh3P-IN (MVArh) 2.231
MVARh3P-OUT (MVArh) 8.627
MVAh3P (MVAh) 135.954
LAST RESET = 11/09/2010 03:54:34
=>
Figure 5.4 METER E Command Response
=>>MET RE <Enter>
Reset Metering Quantities (Y,N)? Y <Enter>
Reset Complete
=>>
Figure 5.5 METER RE Command Response
Table 5.4 Maximum/Minimum Meter Values
Relay Option Max/Min Meter Values
All Models Maximum and minimum line currents I
A
, I
B
, I
C
, and I
N
(core-balance ground fault current) magnitudes (A pri-
mary)
Maximum and minimum I
G
(residual ground fault current)
magnitude (A primary)
With AC Phase Voltage
Inputs
Maximum and minimum
V
AB
, V
BC
, V
CA
or V
AN
, V
BN
,
V
CN
magnitudes (V primary)
Maximum and minimum real, reactive and apparent
three-phase power (kW, kVAR, kVA)
Maximum and minimum system frequency (Hz)
With Voltage Arc-Flash
Detection 2 AVI/4 AFDI
Card Option in Slot E
Maximum and minimum V
S
magnitudes (V primary)
With RTD Option or
SEL-2600 RTD Module
Maximum and minimum RTD temperatures (°C)
With Analog Input Option Maximum and minimum analog input values (engineering
units)