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8-10

Compliance Statistical Bar Chart, continued

View Compliance

Statistics bar

chart

(continued)

NOTE

Many instruments used for harmonic measurements of power supply systems express

their output with reference to the fundamental component of the voltage, especially

those indicating the THD factor.

Harmonic and Interharmonic values are specified only up to order 25 (EN50160 limit),

for the practical reason that for higher orders, the values are generally so small as to be

impractical to measure. Another reason is because of the difficulty of giving values

which would be relevant to all networks.

Action... Result...

STEP 4: The Interharmonic graph

displays the status of each

individual Interharmonic and TID

for each phase. The bar chart

indicates the percentage of

intervals passing the specified

compliance.

•Press Prev/Next to display

Interharmonic bars from 1st to

25th.

•Press Exit to return to the

Compliance Statistical bar

chart.

MARK480

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