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14.4.6 Virtual Meter
· “Virtual Meters” sum a group of channels / cir-
cuits to provide a single reading that is the sum
of all the circuits. Virtual Meters can be used for
generating:
- Panelboard mains reading without the need
for panel mains CTs.
- Busway end feed monitoring without the need
for CTs in the end-feed.
- Totals for specific groups of circuits on switch
gear to provide system level data.
· Virtual Meters are only available on UMG 804s
with firmware versions 1.126 or higher; all
UMG 804s can be upgraded.
· Virtual Meters share the same numbering group
as True Meters therefore they must not use the
same meter number assignment as any True
Meter.
· Virtual Meters share the same Modbus registers
as True Meters.
Note: Virtual Meters do not have the following
functionality:
· The voltage assignments and readings are not
active in the Custom Meters section of the point
map. They are still valid in the per channel sec-
tion and show up in the Detail Data web page.
These variables are not active for Virtual Meters:
· Neutral Current
· Current THD Average
· Current Demand
· kW Demand
· Max Current Demand
· Max kW Demand
· KWH Snapshot
· Crest Factor
· Waveform Capture
· Voltage Presence
· Zero current alarm
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