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.
Material is great and is presented well. Jim is very knowledgeable.