5-8 Metering and Monitoring Date Code 20080110
SEL-387E Instruction Manual
Energy Metering Function (METER E Command)
The energy metering function, in response to the
METER E
, (
MET E
) command, provides
energy quantities as follows:
=>MET E <Enter>
XFMR 1 Date: 10/30/01 Time: 11:09:48.362
STATION A
MWh3P MWhA MWhB MWhC
IN 123456789012.1 123456789012.1 123456789012.1 123456789012.1
OUT 123456789012.1 123456789012.1 123456789012.1 123456789012.1
MVARh3P MVARhA MVARhB MVARhC
IN 123456789012.1 123456789012.1 123456789012.1 123456789012.1
OUT 123456789012.1 123456789012.1 123456789012.1 123456789012.1
LAST ENERGY RESET 11/25/00 10:15:17.235
=>
The element runs every second, using the average value of the last 16 cycles of the previous
second to calculate the energy quantities. The element calculates the real (cosine of the angle
between current and voltage) and reactive powers (sine of the angle between current and
voltage), as well as the direction of the flow, as referenced below:
Table 5.1: Energy Metering Data
Sign of Cosine Sign of Sine Direction
Positive Positive A-phase, B-phase, and C-phase outgoing real power
Three-phase outgoing real power
A-phase, B-phase, and C-phase outgoing reactive power
Three-phase outgoing reactive power
Positive Negative A-phase, B-phase, and C-phase outgoing real power
Three-phase outgoing real power
A-phase, B-phase, and C-phase incoming reactive power
Three-phase incoming reactive power
Negative Positive A-phase, B-phase, and C-phase incoming real power
Three-phase incoming real power
A-phase, B-phase, and C-phase outgoing reactive power
Three-phase outgoing reactive power
Negative Negative A-phase, B-phase, and C-phase incoming real power
Three-phase incoming real power
A-phase, B-phase, and C-phase incoming reactive power
Three-phase incoming reactive power
Use the
METER RE
(
MET RE
) to reset the energy data. In response to the
METER RE
command, the relay displays the following message:
Reset Energies (Y/N)?
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