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Archive for the 'Electrical engineering' Category

Transformers – Basics, Maintenance, Diagnostics

by @ Wednesday, August 11th, 2010. Filed under Electrical Science, Electrical engineering

File: pdf, 867 KB, 55 pages
TOC
1. Introduction
2. Introduction to Transformers
2.1 Principle of Operation
2.2 Transformer Action
2.3 Transformer Voltage and Current
2.4 The Magnetic Circuit
2.5 Core Losses
2.6 Copper Losses
2.7 Transformer Rating
2.8 Percent Impedance
2.9 Internal Forces
2.10 Autotransformers
2.11 Instrument Transformers
2.12 Potential Transformers
2.13 Current Transformers
2.14 Transformer Taps
2.15 Transformer Bushings
2.16 Transformer Polarity
2.17 Single-Phase Transformer Connections for Typical Service to Buildings
2.18 Parallel Operation [...]

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Power Transformer Maintenance – Facilities Standards, Instructions, and Techniques

by @ Tuesday, August 10th, 2010. Filed under Electrical engineering

File : pdf, 2.8 MB, 87 pages
TOC
1. Purpose
2. Introduction to Reclamation Transformers
3. Transformer Cooling Methods
3.1 Dry Type Transformers
3.1.1 Potential Problems and Remedial Actions for Dry Type Transformer Cooling Systems
3.2 Liquid-Immersed Transformers
3.2.1 Liquid-Immersed, Air-Cooled
3.2.2 Liquid-Immersed, Air-Cooled/Forced Liquid-Cooled
3.2.3 Liquid-Immersed, Water-Cooled
3.2.4 Liquid-Immersed, Forced Liquid-Cooled
3.2.5 Potential Problems and Remedial Actions for Liquid Filled Transformer Cooling Systems
3.2.6 Cooling System Inspections
4. [...]

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Electrical Installation Handbook vol 2 – electrical devices

by @ Sunday, August 8th, 2010. Filed under Electrical engineering

File : pdf, 1.6 MB, 123 pages
Introduction
1 Standards
1.1 General aspects
1.2 IEC Standards for electrical installation
2 Protection of feeders
2.1 Introduction
2.2 Installation and dimensioning of cables
2.2.1 Current carrying capacity and methods of installation
Installation not buried in the ground
Installation in ground
2.2.2 Voltage drop
2.2.3 Joule-effect losses
2.3 Protection against overload
2.4 Protection against short-circuit
2.5 Neutral and protective conductors
2.6 Busbar trunking systems
3 [...]

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Electrical Installation Handbook vol 1 – Protection and Control Devices – by ABB

by @ Friday, August 6th, 2010. Filed under Electrical Science, Electrical engineering

Filetype : pdf, 1.4 MB, 167 pages
TOC
Introduction 1 Standards
1.1 General aspects
1.2 IEC Standards for electrical installation
2 Protection and control devices
2.1 Circuit-breaker nameplates
2.2 Main definitions
2.3 Types of releases
3 General characteristics
3.1 Electrical characteristics of circuit breakers
3.2 Trip curves
3.3 Limitation curves
3.4 Specific let-through energy curves
3.5 Temperature derating
3.6 Altitude derating
3.7 Electrical characteristics of switch disconnectors
4 Protection coordination
4.1 Protection coordination
4.2 [...]

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Classical Electromagnetism

by @ Tuesday, July 27th, 2010. Filed under Electrical Science, Electrical engineering, physics

html documents, not downloadable
CONTENTS
# Introduction
* Intended audience
* Major sources
* Preface
* Outline of course
# Vectors
* Introduction
* Vector algebra
* Vector areas
* The scalar product
* The vector product
* Rotation
* The scalar triple product
* The vector triple product
* Vector calculus
* Line integrals
* Vector line integrals
* Surface integrals
* Vector surface integrals
* Volume integrals
* Gradient
* Divergence
* The Laplacian
* Curl
* Summary
# Time-independent [...]

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Advanced Calculus

File : pdf, 50 MB, 592 pages
TOC
Chapt 0 Introduction
1. Logic : quantifiers
2. The logical connectives
3. Negations aof quantifiers
4. Sets
5. Restricted variables
6. Ordered pairs and relations
7. Functions and mappings
8. Product sets, index notation
9. Composition
10. Duality
11. The boolean operations
12. Partitions and equivalence relations
Chapt 1 Vector Spaces
1. Fundamental notions
2. Vector spaces and geometry
3. Produc spaces and Hom(V,W)
4. Affine [...]

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Physics Formulary

by @ Thursday, July 8th, 2010. Filed under Chemical engineering, Electrical engineering, Mechanical engineering, physics

File : pdf, 372 KB, 106 pages
TOC
1. Mechanics
Point-kinetics in a fixed coordinate system
Relative motion
Point-dynamics in a fixed coordinate system
Point-dynamics in a moving coordinate system
Dynamics of masspoint collections
Dynamics of rigid bodies
Moment of Inertia
Principal axes
Time dependence
Variational Calculus, Hamilton and Lagrange mechanics
2. Electricity & Magnetism
The Maxwell equations
Force and potential
Gauge transformations
Energy of the electromagnetic field
Electromagnetic waves
Multipoles
Electric currents
Depolarizing field
Mixtures of [...]

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Reliability Prediction of Electronic Equipment

by @ Sunday, May 23rd, 2010. Filed under Electrical Science, Electrical engineering

File : pdf, 5.9 MB, 150 pages

TOC
1. Scope
1.1 Purpose
1.2 Application
1.3 Computerized Reliability Prediction
2. Reference Documents
3. Introduction
3.1 Reliability Engineering
3.2 The Role of Reliability Prediction
3.3 Limitation of Reliabiliy Prediction
3.4 Part Stress Analysis Prediction
4. Reliability Analysis Evaluation
5. Microcircuits, Introduction
5.1 Gate/Logic Arrays and Microprocessors
5.2 Memories
5.3 VHSIC/VHSIC Like
5.4 GaAs MMIC and Digital Devices
5.5 Hybrids
5.6 SAW Devices
5.7 Magnetic Bubble Memories
6. Discrete [...]

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Control of Electromagnetic Interference – Interface Standard

File : pdf, 940 KB, 253 pages
TOC
1. SCOPE
1.1 Purpose
1.2 Application
1.2.1 General applicability
1.2.2 Tailoring of requirements
1.3 Structure
1.4 Emission and susceptibility designations
2. APPLICABLE DOCUMENTS
2.1 Government documents
2.1.1 Government documents, drawings, and publications
2.2 Non-Government publications
2.3 Order of precedence
3. DEFINITIONS
3.1 General
3.2 Acronyms used in this standard
3.3 Above deck
3.4 Below deck
3.5 External installation
3.6 Flight-line equipment
3.7 Internal installation
3.8 Metric units
3.9 Non-developmental item
3.10 [...]

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Electromagnetic Theory and Computation – A Topological Approach

by @ Saturday, March 6th, 2010. Filed under Electrical Science, Electrical engineering, Mathematics

File : pdf, 1.8 MB, 288 pages
TOC
Introduction
Chapt 1. From Vector Calculus to Algebraic Topology
1A Chains, Cochains and Integration
1B Integral Laws and Homology
1C Cohomology and Vector Analysis
1D Nineteenth-Century Problems Illustrating the First and Second Homology Groups
1E Homotopy Versus Homology and Linking Numbers
1F Chain and Cochain Complexes
1G Relative Homology Groups
1H The Long Exact Homology Sequence
1I Relative Cohomology [...]

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