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Metering & Power Quality
Schneider Electric support forum about Power Meters (ION, PowerTag, PowerLogic) and Power Quality from design, implementation to troubleshooting and more.
Posted: 2018-09-07 06:03 PM . Last Modified: 2020-12-02 03:31 AM
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Under what conditions, the voltage 5th harmonic will increase to 300%
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Hi Gibson,
For the first 3 screenshots, the y-axis is in magnitude Volts, not % of nominal. The H5 is shown around 250~300V. If the fundamental frequency voltage is 22.8kV, then a THDv of 1~2% makes sense.
As for the 4th screenshot, I suspect it is the same issue. Is it a custom screen in PSO? We would need to verify the measurement sources.
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Hi Gibson,
For the first 3 screenshots, the y-axis is in magnitude Volts, not % of nominal. The H5 is shown around 250~300V. If the fundamental frequency voltage is 22.8kV, then a THDv of 1~2% makes sense.
As for the 4th screenshot, I suspect it is the same issue. Is it a custom screen in PSO? We would need to verify the measurement sources.
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