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ION7650 & PM8240 Voltage Harmonic question

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gibson_huang_ep
Lieutenant | EcoXpert Master Lieutenant | EcoXpert Master
Lieutenant | EcoXpert Master

ION7650 & PM8240 Voltage Harmonic question

Under what conditions, the voltage 5th harmonic will increase to 300%

THDV1.jpgTHDV2.jpgTHDV.jpgTHDV_ION7650.jpg

Tags (2)

Accepted Solutions
Ken_Hsu
Commander Commander
Commander

Re: ION7650 & PM8240 Voltage Harmonic question

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.

See Answer In Context

1 Reply 1
Ken_Hsu
Commander Commander
Commander

Re: ION7650 & PM8240 Voltage Harmonic question

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.