Eaton Power Xpert PXM 4000, Руководство пользователя и инструкция по установке

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6 Functions on the Web Server Pages
LOCATING FLICKER INFORMATION ON THE WEB
From the Quality Main Page, click one of the radio buttons listed underneath “Flicker” on the bottom
left side to view Perceptibility, Pst or Plt graphical information. The graph will update to display the
selection.
9’S OF AVAILABILITY (PERFORMANCE OR COMPLIANCE)
The availability of service is often measured in how many 9’s of availability it provides. If the service
is up 90% of the time, it has one 9 of availability. If service is up 99% of the time, it has two 9’s of
availability, and so on. These 9’s translate into how much downtime is allowed per year.
• 90.0000% = 37 days
• 99.0000% = 3.7 days
• 99.9000% = 8.8 hours
• 99.9900% = 53 minutes
• 99.9990% = 5.3 minutes
• 99.9999% = 32 seconds
The Power Xpert Meter is highly configurable for 9’s of Compliance. Any or all of the Out of Limits
triggers can be selected in the 9s calculation.
The meter calculates the Previous Month’s 9’s of Availability percentage and the current Month To
Date’s 9’s of Availability percentage.
LOCATING 9’S OF AVAILABILITY INFORMATION ON THE WEB
From the Quality Main Page the 9’s of Availability values are listed at the bottom of the left hand
side of the page.
PQ INDEX
The Power Xpert Meter calculates power quality information (in graphical and text format) for the
last 10 minutes and the last 24 hours; providing the level and value of Sags, Swells, dv/dt, TDD,
THDv and Flicker. The 10 minute value is the worst of the PQ components. The Alert level is for
values 300 and higher while caution values are above 200. A value below 200 is normal. The 24
hour value ratchets up to new 10 minute PQ values and decays with a 17 hour time constant.
LOCATING PQ INDEX INFORMATION ON THE WEB
From the Home Page the PQ Index graph is located on the top right hand side of the page. Click
one of the underlined options, Latest 10 Minutes or Latest 24 Hours to view detailed information
about the selection. Once the option is selected the top right hand side of the page will change list-
ing the levels and values. At this point the user can either view the alternate option, or return back
to the Power Quality Index by clicking on the underlined label.
EVENTS
The Power Xpert
TM
Meter monitors and logs six kinds of Events; Input Status, Out of Limits, De-
mand Overload, ITIC Sag/Swell, Sub-cycle Distrubance and Transients. Each event can be used to
trigger parameter capture, waveform capture and/or send e-mail as well as be used to change the
state of internal or external I/Os.
TRIGGERS
The following list highlights potential triggers. Each event trigger can be automatic or manual
depending on the selection of the user. In the case of auto trigger, the limits of the next trigger are
calculated by the meter based on the historical data; in the absence of historical data default values
are used. In manual triggering the meter will use the programmed limits set by the user.
Each trigger input can be programmed to monitor performance as for 9’s of Availability or Com-
pliance, capture waveform, capture parameters and/or send e-mail. Once an event is triggered,
the Reset value will be used to check and clear the condition. Every event and it’s corresponding
parameters along with the date and time of the occurrence are logged and available for display or
retrieval using a communication port. (Triggers are available on the 6000 and 8000 Series).