Course Summary Physical lightning protection, a high-integrity single-point grounding system, and appropriate surge protection are the most effective means of assuring minimum risk exposure to transient overvoltage events--whether caused by load switching, lightning, or other EMP sources. This one-day course discusses these threats and the industry best practices to defend against them.
Who Should Attend? This seminar is designed for the engineer, technician, electrician, or facility manager—anyone seeking to protect AC or DC power systems and critical equipment against disruption and damage.
A prerequisite for attendance is a basic knowledge of electrical theory including Ohm’s Law.
What to Expect The class meets from 8 am to 5 pm. Each student will receive a course manual that includes the figures, tables and graphs discussed during the presentation.
Additional Training Upon request, a second day of hands-on Site Inspection Training for private groups may be added at a discount following this course. Site Inspection Training takes place at a client facility, where students will learn the principles and techniques to identify deficiencies in a site’s electrical, grounding, and protection systems including visual inspection and using various field measurement instruments.
Accredited for 0.8 Continuing Education Units.
Section 1: Lightning
Formation of lightning
Positive versus Negative Discharge
Hot versus Cold lightning
Parameters of the Lightning Stroke
Electric Field Effects
Section 2: Switching Surges
Unipolar and Bipolar Transients
Unidirectional and Bidirectiona Transientsl
Switching of Capacitive Circuits
Switching of Inductive Circuits
Representative Magnitudes of Switching Circuits
Section 3: Physical Lightning Protection
Static and Shield Wires
Protection of Transmission and Distribution Systems
Facility Direct Stroke Protection
Types of Systems
Coursing and Down Conductors
High Frequency Considerations
Lightning Ground Impedance
Rolling Sphere Modeling
Tower Grounding and Protection
Section 4: Grounding of Electrical Distributions
Earth Ground Electrode Systems
Grounding Electrode Conductor Sizing and Bonding
Resistivity, Resistance and Continuity Testing
Single Point Grounding of AC and DC Distributions
Equipment Grounding Conductors
Master Ground Bars and Bulkhead Entry Panels
Isolated Ground Systems
Halo Ground Systems
Grounding of Line Treatment Devices
Section 5: Power Line Transient Overvoltage Protection
Types of Protection
IC Sensitivity to and Effects of Voltage Stress
Standard Testing Waveforms
Power Line Monitoring
SPD Selection Criteria
Section 6: Data and Transmission Line Surge Protection