Typical Industrial and Commercial Power System Example
Data gathering and input data requirement
Exposure to load flow analysis to the extent to establish initial
conditions for motor starting analysis
Comparison of induction motor models available: single rotor
and double rotor circuits vs. graphical model
Review of data required to properly model the motor to
be started
Understanding of the motor performance test data including
torque slip vs. slip, current vs. slip, hot and cold start thermal
limits, etc.
Importance of inertia, both motor and load, on motor starting
Discussion of various motor starting methods: delta-wye,
autotransformer, capacitor, and soft-start
Examination and interpretation of PTW study results and
potential problem areas in the power system
Discussion of methods and procedures for completing a
typical study
Overview of motor protection and relationship to motor starting methods
Discussion of compliance with various standards
and requirements