IEC 62271-1 PDF

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Applies trainings and consulting on design, specification and testing of equipment for substations switchgear You need to be a member of Energy Central to access some features and content.

Please sign-in or register to continue. This article is about a clear, old and strange deficiency in IEC standard that impact the worldwide market of low-voltage switchgear. Although written using as reference a low voltage standard the concepts apply directly to distribution and transmission networks.

So, many people may be buying equipment that work with temperature rises which will cause more accelerated aging. A technical standard should not give openings for this. Energy Central contributors share their experience and insights for the benefit of other Members like you.

Please show them your appreciation by leaving a comment, 'liking' this post, or following this Member. Two transmission projects that would transport renewable power recently received a shout-out from NY Gov. Andrew Cuomo. Meanwhile, a Maine state official is taking comments about a referendum on a project that would transport hydropower in his state. Competitive posture should become the concessionaire's new drive!

This allows the voltage to be automatically regulated according to the needs of the grid. New York launched an ambitious "Energy Highway" initiative almost 10 years ago.

Today it's come full-circle, focused on renewables and clean energy, with a few residual projects from the original concept.

The Energy Central Power Industry Network is based on one core idea - power industry professionals helping each other and advancing the industry by sharing and learning from each other.

If you have an experience or insight to share or have learned something from a conference or seminar, your peers and colleagues on Energy Central want to hear about it. It's also easy to share a link to an article you've liked or an industry resource that you think would be helpful. Toggle Navigation. Author Profile. Sergio Feitoza Costa. Director - Eng, M. Member since 21 items added with 5, views. Top Members. Mar 9, pm GMT views. Both are metallic boxes enclosing electrical conductors and insulators, made of the same materials.

They have the same basic operational functions and so, it is reasonable to expect that both would have the same life expectancy The only difference between LV and MV switchgear is the rated voltage, which is not relevant for temperature rise tests.

You may do the tests at any convenient low voltage for both medium and low voltage switchgear. Attending the temperature rise requirements specified in technical standards is the predominating aspect that defines the design and cost of such equipment.

Other things like electrodynamic forces, mechanical and electrical endurance and supportability to internal arcs are important but at a lower level. As the limits explicated in a table it is easy for the testing teams to state in the test report if the equipment passed or failed in the test. In my opinion, if they do not include these statements approved or not they are doing an omission in their neutral laboratory role.

The omission is because they are leaving to the user, the task of interpreting well the technical standard, when it seems they are not skilled enough to do it. For IEC the temperature rise limits of connections and contacts are not defined in a clear table. So, most of the testing laboratories simply present the test results but do not state if the equipment passed or not.

Labs do not usually include in the test reports any alerts to the reader. Not passing, in the sense of the text of this article, means that the temperature rise was above table 1.

For values higher than table 1 there will be accelerated aging the greater are the differences to the values of table 1 as explained in the previous articles. Thank Sergio Feitoza for the Post! Sign in to Vote Like this post. Discussions Sign in to Participate. More Posts. Renewables behind proposed transmission projects in New York, New England Two transmission projects that would transport renewable power recently received a shout-out from NY Gov.

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The voltage optimization algorithm associated with the Smart Transformer. Recent Comments. Amal commented on Thanks for your valuable suggestions that shorten the way for developing countries in Asia, Africa, and Latin America.

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Applies trainings and consulting on design, specification and testing of equipment for substations switchgear You need to be a member of Energy Central to access some features and content. Please sign-in or register to continue. This article is about a clear, old and strange deficiency in IEC standard that impact the worldwide market of low-voltage switchgear. Although written using as reference a low voltage standard the concepts apply directly to distribution and transmission networks. So, many people may be buying equipment that work with temperature rises which will cause more accelerated aging.

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Do you need a multi-user copy? Our prices are in Swiss francs CHF. We accept all major credit cards American Express, Mastercard and Visa , PayPal and bank transfers as form of payment. This document applies to all high-voltage switchgear and controlgear except as otherwise specified in the relevant IEC standards for the particular type of switchgear and controlgear. This second edition cancels and replaces the first edition published in and Amendment This edition constitutes a technical revision. This change is based on reported positive test and service experience of utility representatives in the maintenance team of this standard.

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