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Anil123
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Join Date: Mar 2012
Posts: 2

Guideline for CT and PT Ratio Selection for an Energy Meter

05/05/2012 3:28 AM

Dear Forum members,

I am doing research work on drilling of a glass fiber reinforced polyester resin composite.

During this process, I am recording energy consumed during drilling of this composite by varying its glass fiber percent proportion. The energy meter I am using is a CE certified Nanovip meter.

My question is how to select CT and PT ratio for a particular job? Should it be different for steel,aluminium,wood or say for composites?

Are any guideline available for the same?

Thanking you.
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#1

Re: guideline for CT and PT ratio selection for a energy meter

05/05/2012 4:21 AM

What is the anticipated current for the drill motor; what current range does the meter accept as input? Similarly, what is the motor voltage, and what voltage input does the meter accept?

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Anil123
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Join Date: Mar 2012
Posts: 2
#3
In reply to #1

Re: guideline for CT and PT ratio selection for a energy meter

05/07/2012 4:19 AM

Thank you very much.

Today I drilled the fiber reinforced plastic sample with a 10 mm drill and noted the results with the energy meter. Can you please provide me your e-mail id so that I can send the output screen to you and present CT and PT ratio for further evaluation.
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RAMConsult
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Engineering Fields - Power Engineering - New Member

Join Date: May 2007
Location: NYC metropolitan area.
Posts: 3230
Good Answers: 444
#2

Re: guideline for CT and PT ratio selection for a energy meter

05/05/2012 8:10 AM

Nice little meter:

http://www.instrutek.no/productSheets%5CElcontrol_Nanovip.pdf

There's even enough information on their website for a qualified technician to answer OP's questions in combination with Tornado's suggestions, and a little effort and experimentation on OPs part.

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