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UMG 96-PA
51
13. 10 Harmonics
Harmonics are caused by equipment with
nonlinear characteristics. These additional
frequencies are integer multiples of a funda-
mental oscillation, and show how the equip-
ment affect the power grid.
The possible effects of harmonics include:
• additional heating of equipment.
• additional current on the neutral conductor
• an overload and reduced life cycle of elec-
trical usage
Harmonic loads are the primary cause of
invisible voltage quality problems associated
with enormous repair costs and investment to
replace defective devices.
The device measures the fundamental oscil-
lation of the voltage in the range of 45 - 65
Hz. This fundamental oscillation is the basis
for the calculation of the harmonics for the
voltages and currents.
The device calculates harmonics up to 25
times the fundamental oscillation.
Fig. Measurement value display "Harmonic"
• If you are
not
in the measurement value
display "
Overvie
w," switch to this view by
repeatedly pressing key 1 (Esc).
• Open the main menu with key 1 (Esc).
• With keys 3 (
) and 4 (
), select the menu
item "
Harmonic
" and confirm your selec-
tion with key 6 (Enter).
• With keys 3 (
) and 4 (
), select the
harmonics for the respective voltage or
current and confirm your selection with key
6 (Enter).
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