Showing posts with label Electrical. Show all posts
Showing posts with label Electrical. Show all posts

Tuesday, March 18, 2014

Earthing Practice and Power Quality

"Earth leakage currents arise mainly from the EMC filters built into electronic equipment with switched mode power supplies. Standards limit the leakage current from non-fixed equipment (i.e. equipment that plugs into a standard socket outlet) to less than 3.5 mA. When a lot of electronic equipment is in use, the total leakage current in the protective conductor can become significant."

Earthing Practice by Trevor Charlton
  • Methods of Earthing
  • Earth Conductors
  • Electrical interference
  • Lightning Protection

Earthing Practice and Power Quality

Power Quality and Utilisation Guide

The PQ E-library is a collection of electronic technical reference documents covering introduction, costs, harmonics, resilience, voltage disturbances, earthing, energy efficiency and renewables/distributed generation. See also - Power Quality

Copper Development Association
  • Educational Resources
  • Computers cannot work without copper
  • Electricity in buildings
Copper Development Association Website for information on Copper and Copper Alloys

Copper Development Association - Resource Library

Copper Development Association provides a range of resources in support of the correct and efficient use of copper and copper alloys for major applications.

Wednesday, October 12, 2011

Surge Protection and Lightning Arrestors

Supplementary to EMI/RFI/EMC Immunity of an Equipment. Many Installations are subject to Highly Disruptive Electrical Environment not just EMI. Depending on the budget and the situation a solution has to be found. Sometimes a CVT or an Isolation Transformer can do a lot of good. Converting all Energy inputs to battery energy and having a Isolated Synthetic Sine Supply may be an expensive but good solution. Either way the devices that face the harsh environment have to be over rated along with these protections.

Siemens Residential Surge Protection

Abstract-This study examines the design and construction of AC Electronics load surge protection in order to carry electric surge load arisen from faults in low voltage electricity system (single phase/220V) by using the principle of electronics load clamping voltage during induction period so that electric voltage could go through to safe load and continue to work. The qualification of the designed device could prevent both transient over voltage and voltage swell.

Design of AC Electronics Load Surge Protection - World Academy of Science, Engineering and Technology - WASET

See a product from the MTL Instruments Group. They have a Comprehensive range of surge protection devices offering solutions for all mains power, process control, network and communications, telecom, wireless and RF systems.

ZoneMaster Series

The ZoneMaster Series is available in units with either a 200 or 170kA surge handling capability. ZoneMaster is engineered to protect the most critical electronic systems, suppressing surges at the main service panel.

Thursday, May 07, 2009

NEMA - National Electrical Manufacturers Association

NEMA - National Electrical Manufacturers Association

NEMA, created in the fall of 1926 by the merger of the Electric Power Club and the Associated Manufacturers of Electrical Supplies, provides a forum for the standardization of electrical equipment, enabling consumers to select from a range of safe, effective, and compatible electrical products.

Thursday, October 16, 2008

GE Industrial Systems - Design Resources

Design Resources
Information for electrical engineers when designing or specifying GE equipment.

Publication Library
Technical documentation, time current curves, CSI Specifications.

GE Industrial Systems

Programs available that provide analytical tools, advanced power quality analysis, monitor energy consumption, and manage loads.

Wednesday, February 06, 2008

Kilowatt Classroom Electrical Training

Kilowatt Classroom Electrical Training

The Industrial Electricians Notebook -

Free online electrical books selection that features interesting and timely subjects: electrical theory, electrical reference information, electrical equipment and maintenance data, industrial electronics, and electrical safety regulations. If you like, you can download, print, and assemble your own electrical book.

  • Electrical Books
  • Free On-Line Electrical Books
  • Industrial Electrical Systems
  • Basic Industrial Electronics

Monday, August 13, 2007

Silicon Sams Technology Resource

Silicon Sam's Technology Resource

Samuel M. Goldwasser's latest and most fabulous "Notes on the Troubleshooting and Repair of..." series of comprehensive repair guides for consumer electronic equipment and other household devices. Detailed diagnostic and repair procedures are provided for: small electrical appliances, audio equipment, TVs, VCRs, CD players, computer monitors, microwave ovens, even lawn mowers - and much much more!

Sam's Laser FAQ has a great deal of information on a variety of laser and optics related topics including a comprehensive treatment of diode, helium-neon, argon/krypton ion, and CO2 lasers as well as amateur laser construction including numerous examples of truly home-built lasers. Much of this is not available anywhere else either on-line or in print!