VoltiBULLETIN - January 2006 - Fault Ratings

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All electrical systems are potentially liable to short circuits. If a short circuit occurs, abnormal – and possibly dangerous - current levels are created...

Dear User,

This month, you can learn a little more about Fault Ratings.

Read on:

All electrical systems are potentially liable to short circuits. If a short circuit occurs, abnormal – and possibly dangerous - current levels are created. Such currents are likely to produce considerable thermal and mechanical stresses in electrical distribution equipment, and can be a threat to human life. Therefore, it is essential to protect personnel and equipment by calculating short-circuit currents while designing (or altering) an electrical system.

The electrical system can then also be properly protected using suitable fault current protective devices. This VoltiBULLETIN goes into the topic in terms of an introduction, definitions, today’s need for high short-circuit ratings in modern buildings, and more detail still, provided by the NICEIC.

For more information on Fault Ratings, please click on 'Technical Expertise' from the Home Page, then 'Hot Topics', and then 'Fault Ratings'. Do you have questions on Fault Ratings? Click here to get answers from Voltimum Technical Experts.

Kind regards,

The Voltimum Team.

> Useful Information

Fault ratings - a brief introduction

Voltimum UK & Ireland Managing Editor James Hunt looks at the thorny subject of Fault Ratings in brief in this introductory VoltiBULLETIN article.
Don't get blown away by high fault currents

David Pitt and Chris Smith, Product Managers, Eaton, explain how important it is to understand the need for high short-circuit ratings in modern buildings.
The Guide to Circuit Protection & Control

This excellent Guide (in .PDF format) by Eaton's MEM examines all aspects of the topic, including prospective fault currents, protective devices.
Fault Current (Prospective)

This comprehensive PDF document from the NICEIC's Technical Manual introduces Fault Currents (Prospective).

Fault Current - Protection against

Another PDF document from the NICEIC's Technical Manual goes through Fault Currents and protection against them, in considerable and highly useful detail.

Fuses - re-wireable (semi-enclosed)

This third PDF document from the NICEIC's Technical Manual looks at the re-wirable fuse as a protective device.
Protection - Overload

A PowerPoint presentation by ABB provides clear 'at-a-glance' information on the BS EN60947 standard for industrial switchgear, and more.

Fault Ratings - Fulfil your CPD Obligations here!

This newsletter has been independently assessed by the Construction CPD Certification Service. By reading the newsletter and completing the questionnaire below, it can help you fulfil your CPD obligations.

Click here to access all the past CPDs on Voltimum (DALI, RCDs, Harmonics, BMS & Lighting Control, BS 8436, Part F)

Click here to access the CPDs of our partners on Voltimum

> Previous VoltiBULLETINS

November 2005: Part F of the Building Regulations - CPD approved
October 2005: Outdoor wiring accessories
September 2005: Part L
September 2005: BS 8436 cable standard - CPD approved
August 2005: Motor Protection
July 2005: Building Management Systems (BMS), plus lighting controls - CPD approved
June 2005: RCDs - CPD approved
May 2005: Data Cable
Apr 2005: Consumer Units
Mar 2005: Harmonics - CPD approved
Feb 2005: LEDs
Jan 2005: Part P updated
Dec 2004: Electrical cables in fire conditions
Nov 2004: DALI Protocol - CPD approved

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VoltiBULLETIN

Fault Ratings

January 2006

 

 

 

 


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