Date Code 20080110 Communications 7-25
SEL-387E Instruction Manual
MET Displays winding voltage and current metering data, in
primary amperes
MET D Displays winding demand ammeter data, in primary amperes
MET DIF Displays differential current metering data, in multiples of
tap
MET E Display energy metering data (see MET E below)
MET H Displays harmonic spectrum of currents and voltages (see
MET H below)
MET P Displays peak demand ammeter data, in primary amperes
MET RD n Resets demand ammeter for Winding n (n = 1, 2, 3, A)
MET RP n Resets peak demand ammeter values for Winding n
(n = 1, 2, 3, A)
MET SEC Displays winding current metering data, with magnitude and
phase angle, in secondary and voltage quantities
Use the MET XXX n command, where n is a positive integer, to repeat the MET XXX report n
times. For example, to display a series of eight meter readings, type MET 8 <Enter>.
If the Analog Input Label settings (IAW1, etc.) have been renamed, these will appear in the
report as set.
MET E (Energy Metering)
Access Levels 1, B, 2
The MET E command initiates the energy metering function. The element runs every second,
using the average value of the last 16 cycles of the previous second to calculate energy
quantities. This function is explained more fully in Section 5: Metering and Monitoring, where
a sample report also is shown.
MET H (Harmonic Metering)
Access Levels 1, B, 2
The MET H command is different from the normal metering functions, in that it uses one full
cycle of unfiltered data, at 64 samples per cycle, to provide a snapshot of total harmonic content
of all 12 analog inputs. It uses a Fast Fourier Transform technique to provide secondary
quantities for all harmonics from 1 (fundamental) to 15.
This function is explained more fully in Section 5: Metering and Monitoring, where a sample
report also is shown. If the Analog Input Label settings (IAW1, etc.) have been renamed, these
will appear in the report as set.
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