Comments for NACH ENGINEERING https://nachengg.net Oil filtration machine, VPI plants, industrial ovens Wed, 04 Jan 2017 00:27:55 +0000 hourly 1 https://wordpress.org/?v=6.8.1 Comment on what is vacuum drying process/method of industrial drying oven of transformer by nach https://nachengg.net/vacuum-drying-process-method-of-industrial-drying-oven-of-transformer/#comment-52 Wed, 04 Jan 2017 00:15:21 +0000 http://nachengg.net/?p=982#comment-52 In reply to B. Rama chandra murthy.

Thank you Mr. Murthy, for your query.
In a destructive type of testing, you may need to
(a) take a section of the impregnated winding, and observe the penetration of the resin/varnish/epoxy.
(b) In case the penetration of the resin/varnish is not satisfactory, rework on the VPI cycle parameters like soaking time, pressure time and pressure level. Redefine the VPI cycle and then recheck as per (a) above.

In non-destructive testing, you may need to
(a) Take IR and Dielectric test to confirm the VPI cycle accuracy
(b) Assess the viscosity of the resin/varnish for better results

]]> Comment on Transformer Oil Purification / filtration Process/Procedure ? by nach https://nachengg.net/transformer-oil-purification-process/#comment-51 Wed, 17 Aug 2016 12:23:31 +0000 http://nachengg.net/?p=638#comment-51 In reply to nikhil.

Thank you for your reply

]]> Comment on Why oil is required in transformer? by nach https://nachengg.net/why-oil-is-required-in-transformer/#comment-50 Wed, 17 Aug 2016 12:22:52 +0000 http://nachengg.net/?p=1013#comment-50 In reply to Jitubhai Patel.

Thank you for your response.
I shall send the next post update shortly

]]> Comment on Transformer Oil Purification / filtration Process/Procedure ? by nach https://nachengg.net/transformer-oil-purification-process/#comment-49 Wed, 17 Aug 2016 12:22:21 +0000 http://nachengg.net/?p=638#comment-49 In reply to Christina.

Thank you for your visit and reply.

]]> Comment on Why oil is required in transformer? by Jitubhai Patel https://nachengg.net/why-oil-is-required-in-transformer/#comment-48 Mon, 11 Jul 2016 11:01:31 +0000 http://nachengg.net/?p=1013#comment-48 Hi

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]]> Comment on Transformer Oil Purification / filtration Process/Procedure ? by Christina https://nachengg.net/transformer-oil-purification-process/#comment-47 Wed, 06 Jul 2016 09:09:07 +0000 http://nachengg.net/?p=638#comment-47 In reply to Aashish Partidar.

Globecore company’s purifying plant will meet your demands, also it has representative office in your region.

]]> Comment on Transformer Oil Purification / filtration Process/Procedure ? by nikhil https://nachengg.net/transformer-oil-purification-process/#comment-45 Thu, 03 Mar 2016 10:03:30 +0000 http://nachengg.net/?p=638#comment-45 Very usefull for beginners..am a graduate and working as an apprentice , this article is really informative.

]]> Comment on what is vacuum drying process/method of industrial drying oven of transformer by dinesh https://nachengg.net/vacuum-drying-process-method-of-industrial-drying-oven-of-transformer/#comment-43 Sat, 09 Jan 2016 22:25:42 +0000 http://nachengg.net/?p=982#comment-43 this is really awesome blog thanks for that..

]]> Comment on Use of SS core Filters, with PP/NYLON windings by B. Rama chandra murthy https://nachengg.net/use-of-ss-core-filters-with-ppnylon-windings/#comment-42 Thu, 10 Sep 2015 01:25:55 +0000 http://nachengg.net/?p=405#comment-42 Dear Sir,

How to evaluate the VPI process. We are using the Elmothrem FR63 varnish. Please Explain.

]]> Comment on what is vacuum drying process/method of industrial drying oven of transformer by B. Rama chandra murthy https://nachengg.net/vacuum-drying-process-method-of-industrial-drying-oven-of-transformer/#comment-41 Wed, 09 Sep 2015 17:21:30 +0000 http://nachengg.net/?p=982#comment-41 Dear Sir,
How to evaluate the VPI ( Vacuum pressure impregnation ) process. Is there any test methods, ( Meager and HV )
and distract and non dist-active test required or not, Please explain.

Best Regards,
B R C Murthy.
Sr.Engineer PE.
MEDHA Servo drives pvt.ltd.

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