Power Quality Event Logging And Waveform Capture - ADTEK AFM-8A Operation Manual

Note: Weekend schedule's priority is followed by Holiday schedule. When Holiday
schedule is not enabled, Weekend schedule has the highest priority, overriding the normal
(weekday) schedule.
TOU can record maximum power and current demand under different tariffs, as well
as the time stamp of the maximum value. It can also clear by setting the corresponding
register or from the meter front.
TOU has 2 separate logs: current month TOU and last month TOU. When setup
appropriately and when TOU is enabled, energy will be accumulated in a month-to-month
basis. The current energy usage will be stored under current Month TOU and is divided
up into diff erent tariff s. When next month or counting period starts, all current month TOU
values will be moved to last month TOU.
There are two ways of automatic settle of current month TOU:
1. End of Month: This is the default method. All values from current month TOU will be
copied over to last month TOU at the every beginning of each month (the fi rst day of each
month at time 00: 00: 00). Current month TOU will be cleared and reset to 0.
2. Fixed day: User can select when the values from current month TOU would be copied
over to last month TOU. User can set the time in the following format "DD HH: MM: SS",
DD stands for day, HH stands for hour, MM stands for minute, SS stands for second.
Similar to the previous method, once current month TOU is transferred to last month
TOU, all values from current month TOU will be cleared and reset to 0.

4.11 Power quality event logging and Waveform capture

AFM-8A series meter with power quality event logging and waveform capture functions,
to provide user with the basis for the analysis of power quality. The 4MB FLASH of the
meter to store the data, and ensure the data is not lost when the power is off .
Power quality event logging
When a power quality event happens, such as voltage sag and swell, meter will record
the event timestamp and the triggering condition. It can save up to 50,000 events.
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