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

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6 Functions on the Web Server Pages
Locating THD Current Information on the Web
From the Quality Main Page, click the top drop-down box beside THD Current to view informa-
tion in Amperes or Percentage TDD. Click the second drop-down box to view Total, Odd, Even or
Interharmonic information. The values listed under the drop-down boxes will update to reflect the
selections. The user can then click one of the radio buttons to view graphical information about
Max, Phase A, Phase B, Phase C or Neutral. The graph will update accordingly. Using the drop-
down box above the graph, the user can select to view this information as a waveform, trend with
minimum and maximum values or harmonics.
THD VOLTAGE
The THD Voltage is calculated for line-to-line and line-to-neutral as a percentage as well as in volts.
The THD Voltage is individually measured for Odd, Even and Interharmonics. The Maximum THD
Voltages for line-to-line and line-to-neutral is also determined.
The Power Xpert Meter Vaux (PXM 4200/6200/8200) option will also contain line-to-line THD Volt-
age calculations for phases AB, BC and CA as a percentage as well as in volts. The Maximum THD
Voltage value will be determined from the individual line-to-line values.
All of the THD Voltage measurements are trended and minimum and maximum values are logged
with date and time of each occurrence.
Locating THD Voltage Information on the Web
From the Quality Main Page click the drop-down box next to THD Voltage on the left hand side of
the page to select to view Line to Line Voltage, Line to Line %, Line to Neutral Voltage, Line to Neu-
tral %, Vaux Line to Line Voltage or Vaux Line to Line % information. When this option is selected,
click the second drop-down box to select to view Total, Odd, Even or Interharmonic information.
The values listed underneath the drop-down boxes will change to reflect the selections. At this point
the user can click one of the radio buttons to view graphical information for either Max, AB, BC
or CA. Once this radio button is selected the graph shown on the right hand side of the page will
change. Using the drop-down box above the graph, the user can select to view this information as
a waveform, trend with minimum and maximum values or harmonics.
NOTE: Vaux Line to Line Voltage and Vaux Line to Line % are only options on the meter Vaux ver-
sion.
K FACTOR
The meter calculates the Maximum, Phase A, Phase B and Phase C values for K Factor. The K
Factor is a derating factor related to the sum of the squares of harmonic current times the squares
of their harmonic numbers (multiples of the fundamental).
HOW TO LOCATE K FACTOR INFORMATION ON THE WEB
From the Quality Main Page the K Factor values are listed half way down the left hand side of the
page.
CREST FACTOR
The meter calculates the Maximum, IA, IB and IC values for Crest Factor. The Crest Factor is the
ratio of peak current to rms current. A pure sine wave has a crest factor of 1.414.
LOCATING CREST FACTOR INFORMATION ON THE WEB
From the Quality Main Page the Crest Factor values are listed towards the bottom half of the left
hand side of the page.
FLICKER
Per EN61000-4-15, Flicker is a variation of input voltage, either magnitude or frequency, sufficient
in duration to allow visual observation of a change in electric light source intensity. The Power Xpert
Meter provides Perceptibility, Pst (10 minutes), Plt (2 hours), Trend and Trigger information for
Flicker line-to-line and line-to-neutral values. (Flicker available on the 6000 and 8000 Series).