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Do we have meter that can measure non integer harmonics?

Metering & Power Quality

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sesa252887_brid
Schneider Alumni (Retired)
Schneider Alumni (Retired)
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Do we have meter that can measure non integer harmonics?

Hi I'm looking for a solution to measure the non-integer harmonics.

Thanks

5 Replies 5
sesa96513_bridg
Schneider Alumni (Retired)
Schneider Alumni (Retired)
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4
185

Re: Do we have meter that can measure non integer harmonics?

Hi Abon Chen, I suppose you are talking about inter-harmonics, if so you will need an ION7650 or ION8650A.

sesa252887_brid
Schneider Alumni (Retired)
Schneider Alumni (Retired)
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185

Re: Do we have meter that can measure non integer harmonics?

What is the resolution for 7650 and 8650?

I would like to have 1/10 resolution.

For example, 1.1 1.2 1.3 1.4 multiple

Of fundamental frequency.

Thanks

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"Mauro Carrenho" <powersolutionscommunity-admin@powersolutionscommunity.hosted.jivesoftware.com> 於 2013/11/13 3:57 寫道:

Solutions Expert Community

Do we have meter that can measure non integer harmonics?

reply from Mauro Carrenho in Power Monitoring Hardware - View the full discussion

Hi Abon Chen, I suppose you are talking about inter-harmonics, if so you will need an ION7650 or ION8650A.

Reply to this message by replying to this email, or go to the message on Solutions Expert Community

Start a new discussion in Power Monitoring Hardware by email or at Solutions Expert Community

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sesa96513_bridg
Schneider Alumni (Retired)
Schneider Alumni (Retired)
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185

Re: Do we have meter that can measure non integer harmonics?

Hi Abon Chen, I am not an expert on Power Quality but as far as I understand usually when we talk about interharmonics we don't specify the exactly frequency like in your example, we just have the entire interharmonic band between 2 integers harmonics... But maybe an expert can be more clear in the explanation and also give you more details.

Please find below part of the Harmonic measurement Module from the ION Reference, detailing how this module works.

Magnitude

These 50 output registers provide the magnitude of each harmonic or interharmonic.

When the module is operating in inter‐harmonics mode, magnitude

identifies the signal component between the (n‐1) and (nth) harmonic; for example,

Magnitude 2 specifies the inter‐harmonic band between the fundamental and

the 2 nd harmonic.

The module performs harmonic analysis using the method outlined in the

standard IEC 61000‐4‐7 Harmonic and interharmonics Class I and II. The

frequency resolution is 5 Hz.

sesa252887_brid
Schneider Alumni (Retired)
Schneider Alumni (Retired)
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185

Re: Do we have meter that can measure non integer harmonics?

Thanks for referring to the ION module. Based on the description, it seems that I can only specify inter-harmonic measurement between the adjacent harmonics I specified.

sesa252887_brid
Schneider Alumni (Retired)
Schneider Alumni (Retired)
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185

Re: Do we have meter that can measure non integer harmonics?

To measure all the interharmonics within 50th harmonics , I am thinking about setting n from 1 to 50 for every 5 minutes. So I can get a full range measurements in every 250minutes.

To change ION7650 configuration dynamically, what is the best tool to implement?