Circuit Breakers, Variable Frequency Drives, Electronic Soft Starter

Circuit Breakers, Variable Frequency Drives, Electronic Soft Starter

SIGN UP NOW
  • Format 40 Hours

Course Description

Function and purpose for various forms of circuit protection against fault conditions to include adjustable thermal and/or magnetic overload elements.  Description of construction of and operating characteristics of MSB to include a listing of common shipboard applications. Function and purpose of electric cables.  Requirements for cable operating aboard ship for various voltage and current ratings (HV and LV cables) and how cables just be stranded copper construction. General safety, protection, maintenance, repair and inspection requirements of shipboard electrical cable. Circuit breakers and fuses must safely and quickly interrupt short circuits. Main supply feeders protection against shorts by circuit breakers with instantaneous magnetic trips to include magnetic, thermal and electronic trip devices.  Performance requirements of fuses, general guidelines associated with fuse maintenance.  Introduction to solid state devices, diodes, transistors, triacs, silicon controlled rectifiers, adverse effect of low power factor, single phase rectifier and three phases. Introduce variable frequency drives. Converter types.  Operating principles of AC/DC/AC thyristor 3-phase controlled rectifier. Electronic soft start motor controller. Lab: HV circuit breaker removal, inspection and reinstallation.

Class Requirements

This is a non-USCG course of instruction to familiarize engineering students with electrical subjects.

Training Certificate of Completion

This certificate is issued for successfully completing a one -week familiarization course covering various forms of circuit protection including Molded Case Circuit Breakers, High Voltage Vacuum Breakers and trip methodology to include over/underfrequency and reverse power. Shipboard cable construction for High Voltage and Low Voltage systems. PLC based protection schemes to include Overcurrent inverse tie (OCIT) relay, Overload current (OC INST) trip relay, Negative phase sequence (NPS), Differential current measurement (DIFF), Ground/Earth leakage (EL), Under and Over-voltage (UV/OV), Under and Over-frequently (UF/OF, Lock out (LO) and Reverse power protection (RP), AC/DC/AC (PWM for induction motors), AC/DC/AC synchro converter for synchronous motors), and AC/AC (Cycloconverter for Synchronous motors).

Available Dates

    • Session Circuit Breakers, Variable Frequency Drives, Electronic Soft Starter 2038-01-04
    • Date Jan 04 2038 to Jan 08 2038
    • Location VA, Norfolk
    • Price 1595
    • Class is Full