Appendix A Parameters for Monitoring and Logging
192
EM720 Power Quality and Revenue Meter
Designation Description
V2 Chg%
V2 Voltage change, %Un (last 1-hour value)
V2 Chg Freq
Repetition rate of V2 voltage changes, 1/min
V3 Chg%
V3 Voltage change, %Un (last 1-hour value)
V3 Chg Freq
Repetition rate of V3 voltage changes, 1/min
V1 Pst
V1 Voltage Pst
V2 Pst
V2 Voltage Pst
V3 Pst
V3 Voltage Pst
V1 Plt
V1 Voltage Plt
V2 Plt
V2 Voltage Plt
V3 Plt
V3 Voltage Plt
V1 THD
V1 Voltage THD, %
V2 THD
V2 Voltage THD, %
V3 THD
V3 Voltage THD, %
NSeq Unb%
Negative-sequence voltage unbalance, % (last 10-min value)
Freq Var
Frequency variation, +/-Hz (last 10-s value)
1
In 4LN3, 4LL3, 3LN3 and 3LL3 wiring modes, the voltages are
line-to-neutral; for any other wiring mode, they are line-to-line
voltages.
2
In 4LN3 and 3LN3 wiring modes, the voltages are line-to-
neutral; for any other wiring mode, they are line-to-line
voltages.
3
On a 0.2-s interval
.
4
On a 3-s interval.
5
On a 10-s interval.
6
The value is calculated using a simplified technique as a
relation of the maximum deviation of phase values from a 3-
phase average value to a 3-phase average.
7
The value is calculated using a simplified technique as a
one third of the RMS value of a 3-phase vector sum.
8
Not affected by loss compensation – always indicate
readings at the metering point.
NOTE
Designations of some enginering demands and billing energy
and demand registers are shown using a new short name
notation available in PAS V1.4. By default, PAS uses long
names compatible with older versions of PAS. You can select
a desired notation from the Tools/Options/Preferences tab.
PAS does not allow to store data in files using different data
names. If you have a file uploaded with a previous version of
PAS using long data names, either continue using long data
names, or store data in a new file.
See table below for a list of parameters with short and long
names.
Short Data
Name
Long Data Name
Description
kW IMP ACD
kW IMP ACC DMD
Accumulated demand
kW IMP PRD
kW IMP PRD DMD
Predicted sliding window demand
PF IMP@kVA MD PF IMP@kVA MXDMD
PF (import) at maximum kVA demand
REG1 ACD
SUM REG1 ACC DMD
Billing summary (total) register accumulated demand
