voltage and current magnitudes are used in a real-time decision making algorithm and
real-time metering.
Total Harmonic Distortion (THD) for both voltage and current are calculated and
displayed using the following equation:
THD
A
A
k
k
=
=
∑
2
2
31
0
2
GUID-90760A74-ED50-4E03-A4F9-9D62B07E87A1 V1 EN
(Equation 1)
k Harmonic number k=2,3...31
In addition to Harmonics and THD calculations the secondary task also triggers the
Sequence of Event (SOE) recorder whenever any Harmonic selected by the user exceeds
a preset threshold level.
The user is able to select which Harmonic(s) will trigger the SOE function and also set the
threshold level, above which the SOE recorder will be initiated and below which the
current will be ignored. The threshold level is set as a percentage of the magnitude of the
fundamental. The user can also set the threshold level of either the Voltage or the Current
Harmonic.
1VAC388793-MB A
Section 4
TCC600
TCC300
167
User Manual
Summary of Contents for TCC300
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