information. Refer to EEMAC Standards Publication for more information regarding applications, features and design tests. Individual EEMAC product Standards. lished by EEMAC are similar to those of UL and CSA. See our rat- ings reference sheet for details. EEMAC. The performance ratings estab- lished by IEC, known. Section Operation Requirements. There have been incidents of opposing views or assumptions around how the business of the Product Sections should be.

Author: Dotaur Shaktile
Country: Thailand
Language: English (Spanish)
Genre: Automotive
Published (Last): 17 February 2007
Pages: 85
PDF File Size: 1.21 Mb
ePub File Size: 20.79 Mb
ISBN: 790-6-23424-659-5
Downloads: 17264
Price: Free* [*Free Regsitration Required]
Uploader: Mojin

If more than 4 but less than 10 of the insulators fail to meet the requirements of paragraph 4. Test specimens shall be selected from insulators destroyed in other tests and tested in accordance with Section 5.

Scripting must be enabled to use this site.

Three insulators standardz be selectcd at random and tested in accordance with Section 4. Not what you do with it. Direct exposure to such heat radiation can cause severe burn injuries.

General 31 Standard insulators shall conform in all respects to the requirements hereinafter stated. I work for an electrical equipment manufacturer.

The internal arc resistance of switchgear denotes its ability to withstand arc faults. Design tests on insulators of new design shall be made iii accordance with paragraphs 9. Penetration of the dye into the body of the dielectric shall constitute failure of the lot to meet this standard.


“Arc Flash” vs. “Internal Arc Resistance” – A tale of two terms

Is the terminology really so confusing? This was a very good article. View the Blogger Directory. It happens when two bare live conductors come sandards and endangers operating and maintenance personnel. Dimensions and Characteristics 5.

In a nutshell, arc flash analysis specifies what to do to ensure the safety of personnel when an arc flashes on site.

Sampling, Inspection and Tests 9. The text, data sheets, and data sheet drawings supplement each other and shair be considered as parts of these standards. We manufacturers have no way of knowing the values of such parameters. Because they are sparked by the way an individual installation is configured and operated, there are just too standarda variables.

An analysis assesses how intense an arc flash may be in a particular installation by factoring in parameters like those I listed above short-circuit current, relay settings, fault current flow, etc. Nor do any standards govern arc flashes. They have very much to do with a particular installation — how it is to be operated, for example, and what it is to be used for.

The standard color of the glaze shall be brown. There lies the only possible terminological confusion: An internal arc fault is one that occurs inside switchgear. As you pointed out, Manufacturers etandards control the way equipment is used.


We can guarantee our MV equipment. Insulators paeked in containers conforming to all construction requirements of Canadian Freight classificatioz: Blogger Directory View All Posts.

Transverse Strength, Pounds 2. Reply This was eemzc very good article. Although we manufacturers sometimes propose arc flash analyses as a service, they are usually performed by a competent engineer. Scope 11 These standards cover spool.

Binational Wire and Cable Packaging Standard

Those requirements apply to situations where the switchgear cubicle is open. If vsual inspection is required on Iota of or more insulators, 50 insulators shall be selected at random from the standsrds. Yet some occupational health and safety standards and regulations relate to arc flash. Your company, a manufacturer, happens to have a large number of very competent engineers, in the power system engineering group, who can perform this work!

Randomly select an independent growth rate for the. Not to prevent the arc fault flash itself. They require arc flash analysis. Documents Flashcards Grammar checker.

Related Posts