Coordination Studies

On Demand Class | 6 Hours | 28 Modules | By Jim Phillips, P.E.

  • 6 PDHs | 0.6 CEUs
  • 28 Video Modules
  • Many In Class Problems
  • 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
  • Program does NOT expire
  • Store this program in your personal library for future reference
  • Packed with in class examples and and problems
  • WATCH the Video Preview on the left above left

Groups of 4 or more receive discounts of  25% off!

Groups of 10 or more receive discounts beginning at 30% off. 

Larger groups? contact us as many other companies have done.

Questions?  Call us at 800-874-8883 (US) or email us at [email protected] for details about group/corporate rates.

About the Class

A coordination study, sometimes known as protective device coordination analysis, protection study and similar terms, is an “attempt” to select and set devices to minimize the extent of an outage when a fault or overload occurs.  Ideally only the device closest to the fault should operate and clear with the other devices remaining closed.  This minimizes the extent of the outage.

Accomplishing selectivity between devices typically requires that each device further upstream and closer to the source be a bit less sensitive and often have some intentional time delay.  This approach is good for selectivity but what about protection?  Setting devices with more time delay can result in unnecessary damage if the fault is to be cleared by a device that has delay.

Selectivity and protection are two competing objectives.  In this class, Jim Phillips takes you step by step though the coordination study process.  In addition, in this unique class based on his four decades of experience, he shows you how to manually construct the graphs which has become a lost art in the age of “there’s an app for that”

You will see how to make decisions regarding compromises in selectivity that are often necessary to achieve the best overall coordination.  You will also learn about ground fault protection, coordinating current limit fuses, electronic trip circuit breakers, setting protective relays as well as how to protect transformers based on the ANSI C57 thru fault curves.  The final case problem illustrates how to address making compromises when perfect coordination is not attainable.  

This class was recorded during the week long “Electrical Power System Engineering Class”

Agenda

COORDINATION STUDY REQUIREMENTS
Selective Coordination Basics, Understanding Time Current Curves (TCC), Data Requirements, Device Settings, Graph Scale Selection, Protection vs. Selectivity and Reliability, Compromises in Coordinating Devices in Series

COORDINATION OF MOLDED CASE CIRCUIT BREAKERS
Molded Case Circuit Breaker Time Current Curves, Overload Region of TCC, Instantaneous Region, Fixed vs. Adjustable Instantaneous, Determining the Setting of the Instantaneous, Drawing Time Current Curves.  In Class Problem – Drawing Molded Case Circuit Breaker Time Current Curves, Selecting Settings for Optimal Selective Coordination, Evaluating What Happens During Mis-Coordination

COORDINATION OF FUSES
Time Current Curves of Fuses, Current Limiting vs. Non Current Limiting Fuse Curves, Minimum Melting and Total Clearing Curves, Coordinating Two Sets of Current Limiting Fuses with Selectivity Tables, Coordinating I2T Let-Thru Energy.  In Class Problems – Coordinating Fuses with Each Other and Coordinating Fuses with Circuit Breakers

SOLID STATE / ELECTRONIC TRIP BREAKERS
Long Time, Short Time, Instantaneous Settings, I2T Settings, Coordination of Electronic Trip Circuit Breakers, Eliminating Instantaneous for Coordination, NEC® Requirements for High Speed Fault Clearing for Reducing the Hazard From an Arc Flash

GROUND FAULT RELAYS
Residually Connected Ground Fault Schemes, Zero Sequence Ground Fault Relaying, Settings, NEC® Requirements for Ground Fault Protection of Services, Feeders and Equipment, Nuisance Tripping, Setting Ground Fault Devices

OVERCURRENT RELAYS
Protective Relay Operation, Amp Tap Setting, Time Dial Operation and Setting, Instantaneous Function, Current Transformers, Necessary Protective Relay Time Margins for Selective Coordination, Setting Selection, Protective Relay Time Current Curves, Curve Shape – Inverse, Very Inverse, Extremely Inverse.  In Class Problems – Setting Overcurrent Relays and Drawing Relay Time Current Curves

TRANSFORMER PROTECTION
NEC® Article 450 Requirements, Magnetizing Inrush Current, Using ANSI C57 Thru Fault Curves for Transformer Protection, Adjustments to the Thru Fault Curves Based on Transformer Winding Configurations, Setting Overcurrent Relays for Protecting a Transformer Based on ANSI C57

TIME CURRENT CURVES AT TWO DIFFERENT VOLTAGE LEVELS
Evaluate what happens when coordinating a transformer primary and secondary device at two different voltage levels.  See how to adjust the TCCs

CASE PROBLEM
Coordination Study of Small Industrial Plant, Determining Optimal Device Settings and Drawing Time Current Curves for Multiple Devices in Series.

Short Circuit Analysis

 SHORT CIRCUIT ANALYSIS – On Demand

DSC00377Devices

National Electrical Code Section 110.9 Interrupting Ratings states: Equipment intended to interrupt current at fault levels shall have an interrupting rating at nominal circuit voltage at least equal to the current that is available at the line terminals of the equipment.

Equipment intended to interrupt current at other than fault levels shall have an interrupting rating at nominal circuit voltage at least equal to the current that must be interrupted.

How would one know whether this requirement has been met? By conducing a short circuit study to predict the available fault current at each piece of equipment.  This course takes you through the process of performing a short circuit study including the necessary data, study process and detailed short circuit calculations using Jim Phillips’ calculations worksheets which are part of this online course.

SHORT CIRCUIT ANALYSIS – INTRODUCTION
Short Circuit Study Requirements, NEC® 110.9 and 110.10, Interrupting and Withstand Ratings, Data Requirements, Available Utility Short Circuit Current, Conductor Impedance, Source Impedance, X/R Ratio, Per Phase Calculations, Thevenin Equivalent, Impedance

CONDUCTOR IMPEDANCE AND SHORT CIRCUIT CALCULATIONS
Determining the Source Impedance, Calculating the Conductor Impedance, Conductor Impedance Tables, Conductor Calculation Worksheets.  In Class Problems – Short Circuit Calculations with Conductor Impedance

TRANSFORMER IMPEDANCE AND SHORT CIRCUIT CALCULATIONS
Transformer Testing and Percent Impedance, X/R Ratio,  Using Percent Impedance for Short Circuit Calculations,  Determining the Source Impedance in Percent, Infinite Bus Calculations, Transformer Calculation Worksheets.  In Class Problems – Short Circuit Calculations with Transformer Impedance

MOTOR CONTRIBUTION
Theory of Motor Short Circuit Contribution, Sub-Transient Reactance, Xd”, Effect of Motor Contribution on Short Circuit Current, Multipliers for Motor Contribution.  In Class Problems – Consideration of Motor Contribution

DEVICE INTERRUPTING RATINGS
Circuit Breaker and Fuse Interrupting Ratings, UL and ANSI Testing Methods, Symmetrical and Asymmetrical Short Circuit Current, Effect of X/R Ratio on Interrupting Ratings, Multiplying Factors when the X/R and Asymmetry are Too Large

SERIES RATINGS
Development of Series Ratings, Proper Application of Series Ratings, Dynamic Impedance, Fully Rated vs. Series Rated, Current Limitation, Let Thru Current, U.L. Tests

CASE PROBLEM
Short Circuit Study of Small Industrial System.  Calculations Include Source, Conductor and Transformer Impedance, Motor Contribution and Protective Device Adequacy Evaluation

Design of Electrical Power Systems

On Demand Class | 16 Hours | 43 Modules | by Jim Phillips, P.E.

Watch the Preview Video
  • 16 PDHs | 1.6 CEUs
  • 43 Video Modules
  • 24 In Class Problems
  • 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
  • Program does NOT expire
  • Store this program in your personal library for future reference
  • Packed with in class examples and problems
  • WATCH the Video Preview on the left

Register 3 people for this program and a 4th goes for FREE!

Groups of 10 or more receive discounts beginning at 30% off. 

Questions?  Call us at 800-874-8883 (US) or email us at [email protected]

Agenda

INTRODUCTION
Introduction to Electrical Power System Design, Electrical Safety Considerations, Electrical Codes and Standards, Economic Considerations of Design

TYPES OF SYSTEM DESIGNS
Radial Distribution Systems, Networks, Double Ended Substation, Primary Selective Systems, Loop System

VOLTAGE SELECTION
Selecting the Appropriate Voltage, 120/240V, 208Y/120V, 480Y/277V Systems, Medium Voltage Selection, Delta vs. Wye Configurations, Voltage Drop Calculations, Ferroresonance, Load Increase Requiring Changing Service to Medium Voltage.

LOAD CALCULATIONS
General Lighting Load Calculations, Appliance Loads, Receptacles Load Calculations, National Electrical Code Article 220 Requirements, VA per Square ft., Continuous vs. Non-Continuous, Demand Factors, Panel Schedules

CONDUCTORS
Conductor Selection, Conduit Sizing, Insulation Type, Correction Factors, Temperature Considerations, Neutral and Ground Conductors

OVERCURRENT DEVICES
Circuit Breaker, Fuses, Current Limitation, Introduction to Selective Coordination and Series Ratings

PANELBOARDS
Panelboard Sizing and Ratings, 80 percent vs. 100 percent ratings, Series Rated vs. Fully Rated Panels.

SWITCHBOARDS
Bus Ratings, Breaker and Fuse Selection, Bus Bracing, AIC, Layout, Series Ratings, Bus Structure, 6 Disconnect Rule

LIGHTING DESIGN
Zonal Cavity Lighting Calculations, Lighting Layout

CASE PROBLEM
Small Industrial Switchboard Circuit Design

TRANSFORMERS
Types of Transformers, Dry-Type, Liquid Filled, Cast Coil Designs, Temperation Ratings, Fan Cooling, Insulation Characteristics, Percent Impedance,  Harmonics and K Factor, Transformer Protection Based on NEC® Article 450, Inrush Current, In Class Problems, Sizing and Protecting Transformers

MOTOR CIRCUITS
NEC® Article 430 Requirements, Motor Nameplate Full Load Amps vs. NEC Table’s Full Load Amps, Locked Rotor and Overload Protection, Insulation Class / Service Factor, Motor Tables, Sizing of Feeders, Protection, Motor Short Circuit Protection, In Class Problems – Designing Motor Circuits

GROUNDING
Grounding Electrode System Requirements, Equipment Grounding Conductor Selection, Separately Derived Systems, NEC® Article 250, Solidly Ground and Un-Grounded Systems, High Resistance Grounding, Ground, Ground Loops and Power Quality Issues

HAZARDOUS/CLASSIFIED LOCATIONS
Class I, II, and III, Divisions and Groups, Explosion Proof Equipment, Intrinsically Safe Circuits

LIGHTNING PROTECTION
Concept of Lightning Protection, Air Terminals, Conductors, NFPA 780 Requirements

GENERATORS
Emergency Vs. Standby, Selection of Generator and Prime Mover, Gasoline, Gas (LP/Natural), Diesel Driven, Design Considerations, Generator Loads

AUTOMATIC TRANSFER SWITCHES
Size and Withstand Current Ratings of Transfer Switches, 3 Pole vs. 4 Pole, Protection of the ATS

UNINTERRUPTIBLE POWER SUPPLIES
UPS Systems, Types, Heat Loss, Compatibility with Generators

CASE PROBLEM
Designing a Transformer Circuit for an Industrial Facility

Instructor: Jim Phillips, P.E.

Jim is not just another trainer reading a script. For almost 40 years, Jim has been helping tens of thousands of people around the world understand electrical power system design, analysis and safety. Having taught over 2500 classes during his career to people from all seven continents (Yes Antarctica is included!), he has developed a reputation for being one of the best trainers and public speakers in the electric power industry.

When asked questions about some topics,  Jim’s explanations often run along the line of “Well, here’s what we were thinking and a bit of history” or “Here is why it was written in a particular way.”

His unique insider’s perspective is based on:

  • Four Decades in the Industry
  • Vice Chair: IEEE 1584 Guide for Performing Arc-Flash Hazard Calculations.
  • International Chair: IEC TC78 Live Working – 40 + Standards and Documents
  • Technical Committee Member: NFPA 70E Standard for Electrical Safety in the Workplace
  • Steering Committee: IEEE/NFPA Arc Flash Research Collaboration
  • Author: “How Guide to Perform Arc Flash Hazard Calculations”
  • Contributing Editor: NECA’s multi-award-winning Electrical Contractor Magazine
  • Member: ASTM F18 Committee.

This class is divided by subject into 43 separate modules.  After completing the modules and passing a final quiz – 70%, a continuing education certificate can be printed and stored in your personal library for future use.

Medium Voltage Power Systems

Medium Voltage Training

On Demand Class - Learn Anywhere, Anytime at Your Pace!

  • 16 PDHs | 1.6 CEUs
  • 20 Video Modules
  • 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
  • Jim Phillips' Differential Relay Setting and Current Transformer Saturation Worksheets
  • 33 In-Class Problems and Examples
  • WATCH the Video Preview on the left

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

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.

Questions? Call us 800.874.8883 (U.S.) or email