476 Rockwell Automation Publication 1426-UM001J-EN-P - August 2019
Appendix H EN 50160 Conformance Tracking
Interharmonic Voltages
Conformance criteria for interharmonic voltages are under consideration by the
standards development organization.
Mains Signaling Voltages
The mean value of mains signaling voltage at the user-configured frequency is
measured in each 3 second interval. The following is the conformance
specification for these measurements:
• Signal voltage is less than or equal to the values shown in Figure 52
for 99
percent of each day
Table 229 - Values of Individual Harmonic Voltages at the Supply Terminals for Orders up to 25
(1)
Given in Percent of the Fundamental Voltage
u1, Medium-voltage Systems
Odd Harmonics Even Harmonics
Not Multiples of 3 Multiples of 3
Order h Relative Amplitude U
h
Order h Relative Amplitude U
h
Order h Relative Amplitude U
h
5 6.0% 3 5.0%
(2)
22.0%
7 5.0% 9 1.5% 4 1.0%
11 3.5% 15 0.5% 6…24 0.5%
13 3.0% 21 0.5%
17 2.0%
19 1.5%
23 1.5%
25 1.5%
(1) No values are given for harmonics of order higher than 25, as they are usually small, but largely unpredictable due to resonance effects.
(2) Depending on the network design, the value for the third harmonic order can be substantially lower.
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