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Medium Voltage Power Systems

Online Class Agenda - 16 PDHs / 1.6 CEUs

Medium Voltage Training
  • 16 PDHs | 1.6 CEUs
  • 20 Video Modules
  • Jim Phillips’ Differential Relay Setting and Current Transformer Saturation Worksheets
  • 33 In-Class Problems and Examples
  • Final Quiz – Minimum Passing Score of 70% Required for Continuing Education Credit
  • Take the quiz as many times as you need
  • Certificate of Completion with PDH/CEU Credit
  • No Time Limit
  • Program does NOT expire
  • Store this program in your personal library for future reference

About the Class

This online training class by Jim Phillips, P.E. was recorded during his 16 hour live streaming program.  This class takes you through the fundamentals of medium voltage power systems including the components, equipment, design and operation problems as well as overcurrent protection, surge protection, insulation coordination and many other important aspects of medium voltage power systems.

Jim has developed this course based on almost four decades of extensive experience with industrial, commercial and utility power systems and standards development. He is not just another trainer reading a script.  Jim’s training is based on his insider’s view from being very active with many different standards committees which provides him with the unique perspective, literally from the inside. Coupled with his broad electrical power background, he loves sharing his experience and insider’s view with others.

Jim discusses a wide array of topics in this class including overcurrent relays and relay settings including determining the current transformer ratio, CT saturation calculations, determining overcurrent relay settings and calculating transformer differential relay settings. This class also includes many other topics such as surge protection, insulation coordination and more.

Medium Voltage Power Systems Training

Medium Voltage Power Systems
Online Class Agenda - 16 PDHs / 1.6 CEUs

  • INTRODUCTION
    Medium Voltage Systems, Voltage Ranges, Special Considerations, Failure Modes, Voltage Stress, Thermal Stress
  • MEDIUM VOLTAGE SAFETY
    Electrocution at Low vs. Medium Voltage, Arc Flash Issues, Qualified Person, Approach Boundaries
  • TYPES OF MEDIUM VOLTAGE SYSTEMS
    Utility and Industrial One lines, Reliability Requirements, Overhead and Underground, Systems, Regulated Systems
  • MEDIUM VOLTAGE CABLE
    Copper vs. Aluminum Design, Voltage Ratings, Insulation Ratings, 100%, 133%, 173% Insulation Levels, Shielding Requirements, Electric Fields, Terminating MV Conductors, Orientation of Overhead Lines
  • MEDIUM VOLTAGE SUBSTATION TRANSFORMERS
    Core and Coil Design, Aluminum and Copper Windings, Transformer Characteristics, Tank Construction, Loss Evaluation, Loss Calculations, Efficiency Calculations, Regulation
  • SPOT NETWORKS
    Spot Network Design, Network Protectors, Network Protector Relay Operation, Directional Protection Requirements, Large Network Fault Currents
  • PARTIAL DISCHARGE
    Corona, Surface Tracking, Voltage Stress, Sensing Partial Discharge, Component Failure
  • GROUNDING MEDIUM VOLTAGE SYSTEMS
    Resistance Grounding, Solid Grounding, Ungrounded Delta Charging Current, Coefficient of Grounding Calculations, Effect of Ground Faults on Delta Voltage, Sizing Grounding Resistors, High Resistance Grounding vs. Low Resistance Grounding
  • OVERVIEW OF SYMMETRICAL COMPONENTS
    Positive, Negative and Zero Sequence Impedance, Per Unit, Line-to-Ground Short Circuit Calculations
  • SURGE PROTECTION
    Lightning and Switching Surges, Classes of Surge Arresters, Insulation Basic Impulse Level BIL , Basic Impluse Switching Insulation Level (BSL) Front of Wave (FOW), MCOV Ratings – (Maximum Continuous Operating Voltage) TOV – (Maximum Temporary Over Voltage Capability), Protective Characteristics, Surge Arrester Selection, Energy Capability, Effect of Grounding on Arrester Selection, Insulation Coordination, Protective Ratio and Protective Margin Calculations.
  • CURRENT TRANSFORMER APPLICATIONS
    Ratings, Selection Process, Accuracy, Saturation, Excitation Curves, Burden, Calculation, Momentary Ratings, CT Saturation Calculations for Performance
  • MEDIUM VOLTAGE CIRCUIT BREAKERS
    Vacuum, Air, Oil, SF6 Designs, Symmetrical Interrupting Rating, K-Rated, Voltage Factor, Close and Latch Capability
  • OVERCURRENT RELAYS
    Protective Relay Concepts, Selective Coordination Principles, ANSI Device Numbers i.e. 50, 51, 67, 32, 27, etc. Amp Tap, Time Dial, Instantaneous Setting  Relay Setting Calculations, Digital Relays, Electromechanical Relays, Time Margins, Coordination Between Devices
  • RECLOSERS
    Application on Feeder Circuits, Recloser Settings, Continuous Current and Interrupting Ratings
  • MEDIUM VOLTAGE FUSES
    Medium Voltage Switches, Load Rating, Expulsion vs. Current Limiting Fuse Characteristics, E and R Rated Fuses, Fuse Cutouts, ANSI Time Current Points
  • MEDIUM VOLTAGE PROTECTION CONCEPTS
    Medium Voltage Protection, Relays, Circuit Breakers, R and E rated Fuses, Short Circuit vs. Overcurrent Protection
  • DISTRIBUTION FEEDER PROTECTION
    Protection with Fuses – 300%, Overcurrent Protection with Relays – 600%, Short Circuit Damage Characteristics, Relay “Reach” for End of Line Faults
  • ROTATING MACHINERY PROTECTION
    Protection Requirements, Generator Decrement Curves, Thermal Damage Curves, Reactive, Capability Curves, Differential Protection, Protection Example Calculations
  • MEDIUM VOLTAGE MOTOR CONTROLLERS
    Protection Requirements, Motor Management Relays, Circuit Breaker Protection, Relaying, Class R Rated Fuses
  • TRANSFORMER PROTECTION
    ANSI C57 Transformer Thru Fault Curves, Impact of Transformer Winding Configuration, Overview of Differential Protection, Inrush and Harmonic Restraint, Hands On Differential Relay Setting Calculation Problems and Calculation Worksheets.

Course Content

Download: Medium Voltage Worksheets
Module 1 – Introduction – Medium Voltage Power Systems
Module 2 – Medium Voltage Safety
Module 3 – Medium Voltage Conductors
Module 4 – Transformer Basics
Module 5 – Transformer Impedance and Infinite Bus Calculations
Module 6 – Transformer Loss and Efficiency Calculations
Module 7 – Spot Networks
Module 8 – Grounding Medium Voltage Systems
Module 9 – Introduction to Per Unit Calculations
Module 10 – Introduction to Symmetrical Components
Module 11 – Neutral Grounding Resistor Calculations
Module 12 – Surge Protection
Module 13 – Surge Arrestors and Insulation Coordination
Module 14 – Medium Voltage Fuses
Module 15 – Reclosers and Sectionalizers
Module 16 – Current Transformer Applications
Module 17 – Medium Voltage Circuit Breakers
Module 18 – Overcurrent Relays, Functions and Settings
Module 19 – Generators and Motors
Final Quiz: Medium Voltage Power Systems