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IEEE Papers - Powell Electrical Group

January 16, 2008 By: Agus Indarto Category: Engineering, Management, Leadership, Etc, Important Link No Comments →

Catch the Wave Powell Electrical Group A nine page article about Arc-Resistant Switchgear from the IEEE July/August 2004 issue. Issue Date: Sep 23, 2004

CT Saturation Calculations
Powell Electrical Group
Abstract - Previously, ANSI/IEEE relay current transformer (CT) sizing criteria was based on traditional symmetrical calculations usually discussed by technical articles and manufacturers’ guidelines. Issue Date: Nov 17, 2005

Design Considerations for 38kV Metal-Clad Switchgear Using Vacuum Interrupter Technology
Powell Electrical Group
There is an increasing demand for metal-clad switchgear for use on systems rated up to 38kV. Thsi paper addresses some of the design problems, and solutions to those problems, encountered in designing and testing a 38kV vacuum circuit breaker and associated metal-clad switchgear. Subjects covered include ratings, the effects of two differeing sets of standards (ANSI and IEC), vacuum interrupter selection, testing procedures, and designing to control electrical stresses. Issue Date: Dec 16, 2003

High-Resistance Grounding
Powell Electrical Group
A six page article written by Baldwin Bridger, Jr. This article is from the 1983 IEEE Transactions on Industry Applications magazine.  Issue Date: Mar 14, 2006

Is My UPS Distribution Center Coordinated?
Powell Electrical Group
Abstract - Typical petroleum and chemical industry UPS (uninterruptible power supply) distribution systems [1] are reviewed for interrupting device selectivity during short-circuit conditions. Issue Date: May 18, 2005

Is Selectivity Achieved in Critical Low-Voltage UPS and Standby Generator Power Circuits
Powell Electrical Group
This paper reviews typical critical low-voltage uninterruptible power supply (UPS) systems and standby generator power circuits used in teh petrochemical industry to determin if selectivity is achieved between protective devices during short-circuit conditions. Alternate system configurations are proposed when complete selectivity is not achieved. Generator excitation systems and UPS support during fault conditions is discussed. Issue Date: Jul 27, 2001

Medium Voltage Replacement Breaker Projects
Powell Electrical Group
Many of the medium voltage (5, 15, and 38kV) switchgear installations in service today are of the age that makes replacment circuit breakers a cost-effective investment to extend the life of the substation and improve the overall safety. Today’s replacement circuit breakers, employing the latest interrupter technology, require less maintenance, and utilize safety features that were not available on equipment designs 30 or 40 years ago. Issue Date: Mar 27, 2002

Operation of Ground Sensor Relays Under Conditions of Partial CT Saturation
Powell Electrical Group
Since the publication of the paper by Barnett, concerning low-ratio CT saturation at high fault current and resulting misoperation or nonoperation of overcurrent relays, there has been a great deal of well-directed concern about the problem reported in that paper. However, some of that concern has also been directed at the application of groundsensor relays to low-ratio CT’s in resistance grounded industrial power systems, where no operational difficulties have been reported. Issue Date: Jul 27, 1997

Secondary Selective System Residual Bus Transfer - A Modern Application Approach
Powell Electrical Group
A traditional secondary selective residual bus automatic transfer scheme is reviewed, and the basic logic necessary for automatic transfer operation is discussed. Although many transfer scheme documents are available, the authors believe that scheme complexity should challenge applicaion engineers to better understand the “Why’s” rather that the “How To’s” of the application. A modern PLC approach is proposed as a contemporary solution to a complex control application. Issue Date: Oct 20, 2002

Smart Industrial Substations - A Modern Integrated Approach
Powell Electrical Group
What is a Smart Industrial Substation? Does it enhance plant safety? Does it improve process reliability? Does it increase profits? How do I design a Smart Industrial Substation? Do I already have most of the devices and components for retro-fitting existing equipment? Issue Date: Sep 26, 2003

All About PLCs, Programming, Automation

January 03, 2008 By: Agus Indarto Category: Automation, Monitoring & PLCs, Important Link No Comments →

All About PLCs, Programming, Automation

Electrical and Optical Wire and Cable Technical Handbook

January 03, 2008 By: Agus Indarto Category: Engineering, Management, Leadership, Etc, Important Link 1 Comment →

Electrical and Optical Wire and Cable Technical Handbook


This handbook is designed to be a useful collection of engineering and technical information on electrical and optical wire and cable and related products.

It is primarily intended for those individuals who design, specify or troubleshoot wire and cable systems.
  1. The Basic Principles of Electricity(62KB PDF)
  2. Conductors (35KB PDF)
  3. Insulation and Jacket Materials (180KB PDF)
  4. Shields (150KB PDF)
  5. Armor (29KB PDF)
  6. Cable Types and Selection Criteria (288KB PDF)
  7. Electrical Characteristics (201KB PDF)
  8. Installation and Testing (239KB PDF)
  9. Connectors, Lugs & Terminations (171KB PDF)
  10. Packaging of Wire and Cable (137KB PDF)
  11. Standards and Specifications (321KB PDF)
  12. Conversion Tables (103KB PDF)
  13. Formulas and Constants (75KB PDF)
  14. Continental Europe (256KB PDF)
  15. United Kingdom (64KB PDF)
  16. Latin and South America (30 KB PDF)
  17. Canada (86KB PDF)
  18. Asia and the Pacific Rim (64KB PDF)

Free Training Products : PLC, Programming PLC, Electrical Relay, Control

January 03, 2008 By: Agus Indarto Category: Automation, Monitoring & PLCs, Important Link No Comments →

PLC Primer ( 252K PDF file)
For those new to PLCs–Grasp the basics of PLCs Programming and Documentation Pads (ALL) (720K PDF file)
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)

PLC Program Listing (184K PDF file)
Input/Output Listing (200K PDF file)
Register-Word/Internal Output Usage Listing (196K PDF file)
PLC Automation Project Notes (168K PDF file)

PLC Glossary of Terms (92K PDF file)
A complete glossary of the most often used terms in PLC systems

Logic Symbols, Truth Tables and Equivalent Ladder/PLC Logic Diagrams (20K PDF file)
Handy table of equivalent electromechanical ladder diagram and PLC symbols

Electrical Relay Diagram and P&ID Symbols (88K PDF file)
Reference table of relay and P&ID diagram symbols used in design

Bussmann Application Info : Electrical, Safety, Protection

January 03, 2008 By: Agus Indarto Category: Engineering, Management, Leadership, Etc, Important Link No Comments →

Bussmann Application Info

Electrical Safety

Services

Introduction to PLC (Programmable Logic Controller)

December 18, 2007 By: Agus Indarto Category: Automation, Monitoring & PLCs, Important Link No Comments →

What is PLC ?

•        A solid state device that controls output devices based on input status and a user program.

•        A PLC is basically a computer which was designed for industrial automation purposes.

PLC monitor the status of devices connected as inputs.  Based upon a user written program, stored in memory, it controls the status of devices connected as outputs.

•        I/O system is the “eyes, ears, and hands” of the PLC.

•        I/O module is the interface between the PLC and the devices which are a part of the automation system.

 See detail : Introduction to PLC (Programmable Logic Controller)

 

Creative Job Search - Online Guide Table of Contents

December 13, 2007 By: Agus Indarto Category: Important Link No Comments →

FOREWORD

INTRODUCTION

TRANSITION

JOB SEARCH PREPARATION

SKILLS IDENTIFICATION

RESUMES AND COVER LETTERS

JOB SEARCH TOOLS

JOB SEARCH PROCESS

INTERNET JOB SEARCH STRATEGIES

THE JOB INTERVIEW

FINISHING TOUCHES

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