9300 Series User’s Guide Displaying Data with Vista
Chapter 4 - Using ACCESS Software Page 79
The harmonics measurement display shows total harmonic distortion for each
phase of voltage and current. Links to harmonics min/max and harmonics
trending displays are provided, and a control object is included for enabling/
disabling harmonics logging
Voltage Disturbance Counter Reset
Level 3 WinPM.Net authority is required to reset the power quality event
counter, the manual waveform trigger, and the control objects.
Disturbance Details
The Log Server must be running to view the CBEMA plot or sequence-of-events
data.
Long-term Min/Max
Double-click the Long-term Min/Max object to see a Vista grouping window
showing min/max values for phase voltage and current THD.
Level 3 WinPM.Net authority is required to reset the min/max values.
Harmonics Measurements
Total Harmonics Distortion (THD) is displayed as a percentage of the
fundamental.
Harmonics Trending
The Log Server must be running to view the logged harmonics data.
Harmonics data logging is enabled by default.
Level 3 WinPM.Net authority is required to use the control object.
The control object indicates the logging enable status: the switch is in the up
position (1) when logging is enabled, and down (0) when logging is disabled.
Setpoints
The Setpoints diagram uses setpoints to monitor kW demand, over current and
under average voltage and power factor levels. Vista annunciates warnings if any of
the values exceed specified limits. Users with Level 3 WinPM.Net authority can
define the setpoint limits.
Monitoring of kW demand, phase current and voltage unbalance conditions,
with annunciation when user-specified upper limit is exceeded
Real-time display of kW demand, phase current and voltage unbalance
Over kW Sliding Window Demand Monitoring
Over kW demand monitoring is disabled by default. Level 3 WinPM.Net authority
is required to enable this monitoring. The status will read NOT AVAILABLE when
monitoring is disabled.