User's Manual

20 Universal Metering Transponder for kV2c™ Meter User Guide
Functional Description of the UMT-C-KV
It is recommended that TWACS retrieves the daily interruption summary data at
least every two weeks.
The transponder will supply the following data as requested by the Master Station:
• A power-down count in a cumulative format.
• A summary of interruptions for the latest 12 time stamped interruptions.
• The time stamped data for any given incident on any given day from the
latest 12 time stamped interruption data. The data is read directly from the
35D DSID table.
• A report describing the summary of power-down incidents for a range of
dates from the data collected for the past 35 days. The summary for the range
of dates includes the summed duration of the sustained interruption, the total
number of sustained interruptions, the total number of momentary
interruptions, and the total number of momentary interruption events. The
date range is limited to a maximum of fifteen days.
• The 35D DISD data pattern for a given date range. The date range is limited
to fifteen days.
• A report describing the summary of power-down incidents for any given day
from the data collected for the past 35 days. The summary will include the
summed duration of the sustained interruption, the number of sustained
interruptions, the number of momentary interruptions, and the number of
momentary interruption events for the given day. The data is read directly
from the DISD table.
The UMT-C-KV offers limited polyphase detection. See Loss of Power Handling.
Power Down
The UMT-C-KV maintains a count (in the Power Down Count register) of the
number of times it experiences a power-down condition. A date-and-time stamp of
power-down, along with the duration for the most recent interruption, is recorded.
The register relates only to phase interruptions that affect meter power. A phase
loss translates to a loss of power to the meter and transponder.