El- Sharkawi, Mohamed

Electric Safety : Practice and Standards - 1st ed - Boca Raton : CRC, [2014] - 464 P ILL

Fundamentals of Electricity
Electric Fields
Magnetic Fields
Alternating Current
Three-Phase Systems

Basic Components of an Electric Grid
Power Lines
Substations

Physiological Effects of Electricity
Classifications of Electric Shocks
Factors Determining the Severity of Electric Shocks
Symptoms and Treatments of Electric Shock
Microshocks

Ground Resistance
Ground Resistance of Objects
Soil Resistivity
Soil Treatment
Factors Affecting Ground Resistance

General Hazards of Electricity
Touch Potential
Step Potential

Induced Voltage due to Electric Field
Equipotential Surface
Induced Voltage on a Conductor without Field Distortion
Electric Field Distortion due to Earth
Induced Voltage due to Multiple Energized Phases
Effect of Line Configuration on Induced Voltage
Induced Voltage due to Energized Cables

Induced Voltage due to Magnetic Field
Flux and Flux Linkage
Induced Voltage due to Single Energized Conductor
Induced Voltage due to Multiple Energized Conductors
Induced Voltage due to Electric and Magnetic Fields

De-energized Line Work
Definition of a De-energized Conductor
Methods of Detecting Induced Voltage
Main Protection Techniques
Grounding System
Grounding Methods
Case Studies

Live-Line Work
Hot Stick Method
Insulate and Isolate Method
Bare-Hand Method
Case Study
Exercises

Arc Flash
Arc Flash Phases
Assessment of Arc Flash
Calculation of Arc Flash Protection Boundary
Personal Protection Equipment
Approach Boundaries

Atmospheric Discharge
Characteristics of Lightning Discharge
Protection from Lightning Strikes
Safe Distance from Lightning Protection Devices
Exercises

Stray and Contact Voltages
Neutral versus Ground
Service Transformer
Voltage on Neutral Conductor
Stray Voltage
Detection of Stray Voltage
Mitigation of Stray Voltage
Mitigation of Stray Voltage in Hospitals
Contact and Structure Voltages
Neutral Deterioration
World’s Residential Grounding Practices

Electric Safety under Power Lines
Electric Field Calculation
Electric Field near Objects
Electric Field Profile under Power Lines
Allowable Limits for Electric Fields
Minimum Vertical Clearance Methods
Measurement of Electric Field Strength
Mitigation of Electric Field

Coupling between Power Lines and Pipelines, Railroads, and Telecommunication Cables
Electric Field Coupling
Magnetic Field Coupling
Mitigation of Electromagnetic Coupling
Ground Curren

Electric power engineering education traditionally covers safety of the power equipment and systems. Little attention, if any, is given to the safety of people. When they reach professional status, most power engineers are not familiar with electric safety issues such as practices governing site works or grounding techniques of dwellings, hospitals, and factories. Designed for both electrical engineering student and practicing power engineers, Electric Safety: Practice and Standards provides the knowledge and analysis they need to be well versed in electric safety.

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