Metering & Power Quality
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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.
Link copied. Please paste this link to share this article on your social media post.
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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