Aclara SGM1430-B, Руководство пользователя

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S G M 1 4 3 0 - B S m a r t M e t e r P o l y p h a s e U s e r M a n u a l – S M E T S 2
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Chapter 5 • Metrology Functionality
• Over frequency threshold
• Duration (in seconds) that triggers an over frequency event/alarm
• Under frequency threshold
• Duration (in seconds) that triggers an under frequency event/alarm
The event log will record the time and date stamp for the start and end of the event
and the total number of events.
Over Current
The SGM1430-B meter has a configurable over current threshold and duration (in
seconds) to activate the event. The event log will record the time and date stamp
for the start and end of the event and the total number of events.
Power Factor Threshold
The SGM1430-B meters have a configurable power factor threshold and duration
(in seconds) to activate the event. The meter may be configured to update the
event log or send an alert to the headend when the threshold parameters for a
power factor event are met. The event log shall record the time and date stamp for
the start and end of the event and the total number of events.
N
OTE
Power factor monitoring on polyphase installations is not recommended due
to the significant number of alerts generated.
Voltage Quality Measurements
The SGM1430-B meters may be configured to support Average RMS Over/Under
Voltage, RMS Extreme Over/Under Voltage, RMS Voltage Sag, RMS Voltage
Swell, and Supply Outage quality measurements.
Average RMS Voltage for Phases 1, 2, and 3
The SGM1430-B polyphase meter has the ability to calculate the average RMS
voltage for phases 1, 2, and 3 over a configurable period as defined in the Phase
[n] Average RMS Voltage Measurement Period.
The values are calculated and stored at the end of the period in the Phase [n]
Average RMS Voltage Profile Data Log.
Over Voltage Threshold
Upon detecting that the value calculated for phase [n] is above the Phase [n]
Average RMS Over Voltage Threshold, the meter will increment the Phase [n]
Average RMS Overvoltage counter, update the Power Event Log, and send an
alert via its HAN interface
Upon detecting that the value calculated for phase [n] is below the Phase [n]
Average RMS Over Voltage Threshold and the value calculated in the prior
configurable period was above the Phase [n] Average RMS Over Voltage