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Dran-View 6 User Guide

Power Quality

Quality of supply histograms THD Timeplots for Voltage and

Current, with worst case spectra

Power

Quality

Category This option will

produce a page

with 5%, 95%, and

99% probability

values for the

following

parameters:

Voltage, VTHD,

ITHD, Voltage

Unbalance Factors,

and Frequency.

This option will

produce one

page/phase with

timeplots of

VTHD and ITHD

plus harmonic

spectra bar charts,

showing the

harmonic contents

at the point in time

where VTHD and

ITHD respectively,

have the highest

magnitude.

Activity charts for Sags, Swells,

Interruptions and Transients

Worst case summaries without

waveforms

This option will

produce a page

with all Sags,

Swells,

Interruptions, and

Transients

presented in counts

(Y), along a 24

hour X-axis.

This option will

produce a page

consisting of tables

with the four worst

Sags, Swells,

Interruptions, and

Transients. The

tables are sorted

according to

severity of event.

The tables also

contain

information about

magnitude,

duration, and when

the events

occurred.

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