Basics of Electricity
Electrical Engineer's pocket guide you have to register but it is worth the effort! Thanks to IDC Technologies.
Power Factor Correction & Energy Savings - Harmonics - a misunderstood phenomenon - Jean-Guy Boudrias & Jeff Barnnard - Harmonics in electrical distribution systems are created from a number of sources and produce a variety of undesirable side effects, therefore it is important to understand all solutions that are available. Phase shifting will be reviewed as one concept for solving certain types of problems related to power quality . Both theoretical concepts and a case study are presented - from United Wire & Cables.
The Differences between Watts and Volt Amps - Steve Mackay - I often...
The following technical information is from the Cable Tray Institute
- What is a Cable Tray System?
- What standards / guidelines are available for cable tray systems?
- What types of Cable Tray are available?
- How do I know what type of cable tray is right for my application?
- What materials / finishes are available for the various cable tray systems?
- Now that I know what types of cable trays are available, what configurations are available?
- After selecting the type of cable...
Cables-IEEE 1242 Specifying and Selecting Cable for Petrochemical Plants a Guide - By Donald A Voltz and Joseph H Snow, this is a really excellent technical paper from Mustang Engineering.
Protection or Degradation - Separate the ‘quiet’ cables such as analog I/O lines, digital I/O lines, or LAN connections - Motors starting, stopping, switches on and off, controls blinking in and out … it is a cacophony of electrical clatter. In today’s industrial environments, electronic devices...
The 12 Most Common Mistakes of Specifying Circuit Protection for Equipment - From ETA Circuit Protection and Control.
The following excellent protection articles By GEORGE W. FARRELL and FRANK R. VALVODA, P.E have been issued by the folks at the Consulting Specifying Engineer website http://www.csemag.com.
Electrical Earthing Systems - This excellent link from Wikipedia, the free encyclopedia is an excellent reference on electrical earthing and grounding. It includes information on Low-voltage systems, IEC terminology, TN networks, TT network, IT network, Safety, Regulations, Application examples, Medium-voltage system, Solid-earthed neutral and Unearthed neutral.
Earthing in Low Voltage Systems - Covers Earthing connections, Definition of standardised earthing schemes...
The Following Extremely Useful Documentation Tools are from www.industrialtext.com.
These useful PLC listing pads allow you to implement better PLC design implementations and keep an orderly documentation system. Select a PDF with all listing and sample pads or individual listings with samples (below)
How much does it cost you to change a light globe? - Do you want to dramatically reduce your lighting maintenance costs and reduce your risk hazards? Lighting maintenance is a necessity and often an expensive job in the industrial work place today. The costs involved are usually high due to the positioning of light fittings. This no longer needs to be the case. The installation of an In2 Light Hatch® will dramatically reduce the costs involved in changing light globes on...
Motors - Erik Mertens -The scope of this document is to introduce the basic principles of motors and its important characteristics as well as the possibilities to drive equipment. The motor driven equipment on a typical industrial site accounts for approximately two thirds of the electricity consumption. Therefore, any type of measure taken to improve the efficiency of a motor system consequently can offer major energy savings - From Laborelec and Leonardo Energy.
Jump to the Various Sections of this page: Electrical Safety | Arc Flash | Digital Substation | Evaluating Fire and Heat Damaged Electrical Equipment | IEC61850 Based Process Bus Protection Systems | Power Transformers | Transmission Power Transformers |
The Following papers are from the 2013 Electrical Arc Flash Conference and Electrical Safety & Power System Protection Forum - Thanks to IDC Technologies.
Electrical and Instrumentation Enclosures
Jump to Subject:- Electrical and Instrumentation Enclosure Design and Specification | Electrical and Instrumentation Cabinet and Enclosure Construction | Fieldbus Enclosures | Electrical and Instrumentation Enclosure Standards | Electrical and Instrumentation Enclosure Cooling | Enclosure Fire Protection | Enclosures for Arctic Conditions | Instrument Enclosures, Sunshades and Supports | Electrical and Instrumentation Enclosure Maintenance
Know Your Instrument and Electrical Enclosures
Jump to Subject:- U.S. Electrical Enclosure Standards | Electrical and Instrumentation Enclosure Types | IEC Standards for Electrical and Instrumentation Enclosures | Electrical and Instrumentation Enclosure Design Tips | Basic Conditions for Various Electrical and Instrumentation Enclosure Types | Type / Degree of Protection for Electrical and Instrument Enclosures | Electrical / Instrument Enclosures - Cross Reference of NEMA Type Numbers to...
Motor Control Centres (MCCs)
Guidelines For Performing Infrared Inspections Of Motor Control Centers - Josh L. White - Understanding the thermal patterns of this equipment is critical to a successful inspection. Also correctly identifying the source of the anomaly can make recommendations more valuable. From ezinearticles.com.
Specification for Motor Control Centers 600 Volts and Below - This specification covers low voltage motor control centers with combination starter units. From GE...
Programable Electronic Controller (PLC)
The following technical information is From Automation Direct.com
A Condensed Guide to Automation Control System Specification, Design and Installation - T. Elavsky - Automation Direct
Electrical and Instrument Wiring Terminal Connections
The following is from Weidmüller Pty Ltd
Modular terminals are available with many different types of connection - The principles of some of these are detailed below;
The Weidmüller tension clamp system functions in a similar way to the proven clamping yoke. Separation between the mechanical and electrical functions has also been maintained with the tension spring version. The tension clamp made of...
Surge and Lightning Protection
It will never happen to me? Don't you believe it ... Globally, some 2000 on-going thunderstorms cause about 100 lightning strikes to earth each second!!
Modern day industrial facilities contain large amounts of microprocessor based equipment from control computers to field sensors. High speed data is transferred around a site to allow business decisions to be made which affect productivity and efficiency. The real time data used for such...
Specification - Electrical and Instrumentation Enclosures
Typical Instrument and Electrical Enclosure Specification Index
The Following typical Index will assist in the preparation of a specification for an Instrument / Electrical Enclosure.
Location Of Equipment
Service and Environmental Conditions
Control Panel Construction
Indoor Control Panels
Uninterruptible Power Systems
The following Technical Information is from Falcon Electric Inc.
10.11 The True Cost of UPS and Batteries - A Tutorial - This is a brief discussion of the present day state of uninterruptible power supplies (UPS) under 10kVA, the largest UPS market segment, and their battery technology. They make up the bulk of the UPS units installed worldwide for business, industrial, scientific, IT and home applications. Since the UPS market is very large the UPS business...
Variable Speed Drives
AC and DC Variable Speed Drives - Application Considerations - Knowing what controller/motor package to use in a given situation is just one of the subjects covered in this overview of AC and DC drive application considerations - From Reliance Electric.
Top tips for specifying VFDs - Joe Kimbrell - Variable frequency drives can reduce energy consumption, improve real-time control and lengthen motor life. Selecting the right one for your application requires asking the...
Wind Farm Turbines
Offshore Wind Farm Electrical Connection options - a paper by W.Grainger and N.Jenkins- Thanks to the offshore wind energy network.
Instrumentation and Initial Evaluation of the 2.5MW Bockstigen Off Shore Wind Farm - Thanks to the offshore wind energy network.
Other Offshore Wind Energy Network Articles
Integration of Large Wind Farms into UtilityGrids - (Part 1 - Modeling of DFIG) - ABB Inc.
Integration of Large Wind Farms into Utility Grids - (Part 2 - Performance...
Electrical and Instrument Wiring Terminals
Electrical and Instrument Wiring Terminals Technical Data
It is important that terminating and making off terminals is undertaken by fully competent electrical tradesmen. Quality crimping tools, terminals and accessories should be used.