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1773/1775/1777
Users Manual
48
Main signaling voltages. Mains signaling voltage also known as ripple control signal for
various control applications, such as tariff changeover, street lightning, storage heathers, and
alarming. It is a is data telegram applied at a frequency between 110 Hz and 1600 Hz with an
amplitude of 1 % … 4 % of Vnom. Depending on the electrical utility, the telegram is from 6.6 s
up to 2 minutes long.
Measurement Modes:
PQ Logger
Configuration:
Frequency of up to two mains signaling voltages.
Measurement:
The Analyzer stores the RMS value of the mains signaling frequency and aggregates to 3 s
values. In accordance with IEC61000-4-30 the RMS values is either taken from the 5 Hz
frequency bin when the mains frequency is a multiple of the spectral frequency bin or
adjacent 4 bins are used. See Figure 13.
Figure 13. RMS Value
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