Tag Archives: January

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Brickwork

“American Bricklayer” 1904 | Alice Ruggles

 

Industrial electroheating and electromagnetic processing

The global standards for heat tracing systems are developed by IEC Technical Committee 27.  The scope of work for this committee is reproduced below:

Standardization in the field of industrial equipment and installations intended for electroheating, electromagnetic processing of materials and electroheat based treatment technologies Note: The scope of interest covers industrial installations with the use of the following equipment: – equipment for direct and indirect resistance heating; – equipment for electric resistance trace heating; – equipment for induction heating; – equipment using the effect of EM forces on materials; – equipment for arc heating, including submerged arc heating; – equipment for electroslag remelting; – equipment for plasma heating; – equipment for microwave heating; – equipment for dielectric heating; – equipment for electron beam heating; – equipment for laser heating; – equipment for infrared radiation heating. The list presents typical examples of equipment and its applications and is not exhaustive.

CLICK HERE for the link to the TC 27 Strategic Business Plan

Titles in this committee’s bibliography appears to be stable.   As with all IEC titles, they are relatively narrow in scope compared with the titles promulgated by most US standards developing organizations.  Our interest lies primarily in the application of this technology within and around education community buildings.

While heat tracing generally goes un-noticed it is an essential part of cold weather safety.  It is wise to keep pace with its evolution with innovation in materials and controls with the lead.

We maintain this committee’s work on the standing agenda of our seasonal Snow & Ice colloquia; along with US standards developed by UL, IEEE, NEMA, NFPA, ICC, ASHRAE and a few others.  We also collaborate with the IEEE Education & Healthcare Facilities Committee on this topic.  See our CALENDAR for the next online meeting; open to everyone.

 

Issue [18-332]

Category: Electrical

Colleagues: Mike Anthony, Lorne Clark, Jim Harvey

 

King’s Cake

Standards Louisiana

Topology of Continuous Availability for LED Lighting Systems

Topology of Continuous Availability for LED Lighting Systems

Giuseppe Parise – Marco Allegri

Sapienza – Università di Roma

Luigi Parise

Ospedale Pediatrico Bambino

Raffaele Pennacchia – Fabrizio Regoli

Italian Parliament

Giorgio Vasselli

3M Elettrotecnica Rome

Abstract: Lighting systems with a big number of luminaires in large halls are a case of distributed loads that need topologies with modularity, whenever possible to ensure a uniform distribution of the supplying circuits, an easier installation, management, and maintenance. The light emitting diode (LED) luminaires give a great impact on the system operation due to their auxiliary series devices and to the high inrush currents of the ac-dc switching power supplies. This article proposes a topology to design LED lighting systems, configured in a modular scheme of a main ac distribution and a branch dc distribution supplying luminaires clusters. Each cluster is provided as a “double-dual corded” equipment with double power supply and double control type, digital, and analogic. The suggested topology aims to make available a system that allows overcoming fault situations by design and permits maintenance activities limiting and recovering degradation conditions. In this way, the lighting system of special locations, for which there is the willingness-to-accept greater financial costs against loss service risks, can satisfy the requirement of continuous availability system. To provide more details on the proposed design criteria this article describes, as case study, the lighting system of a parliamentary hall with one thousands of luminaires.

CLICK HERE to order complete paper

Looking Ahead: 2024

“Chance favors the prepared mind.”
— Louis Pasteur

Welcome.  Join us January 2, 2024 at 16:00 UTC.  Topics:

  • Colleagues
  • Corporate information: Security, Fair-Use, Copyright
  • Educational Mission
  • 2023 Log of comments
  • Results
  • 2024 Priority catalogs and titles:

    NFPA 70 2026 National Electrical Code

    NFPA 99 2024 Health Care Facilities Code
    IEEE C2 2023 National Electrical Safety Code
    IEEE 1547 Interconnecting Distributed Resources with Electric Power Systems
    2022 IEEE 2800 Standard for Interconnection and Interoperability of Inverter Based Resources Interconnecting with Associated Transmission Electric Power Systems
    IEEE 3001.9 Recommended Practice for Industrial Lighting Systems
    International Code Council, ASHRAE International, ASME and ASCE catalog titles

(This page to be re-formatted into a separate document)

  • Publications and citations
  • Status of roll-out to 49 other US states
  • Recommendations to Producers and Conformance organizations
  • Website and Social Media adjustments and upgrades
  • Preference for content, content speed over page and post formatting.

Use the login credentials at the upper right of our home page.

 

As apologists for active involvement in the US standards system we owe no blind allegiance any educational settlement or the domain occupied by vertical incumbers; rather, we mean that we are actively engaged in providing explanations, justifications for maintaining them as centers of civilization.

Standards Michigan Offices Ann Arbor

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