COURSE NAME:Motor Protection, Control and Maintenance


UPCOMING EVENTS


START DATE END DATE CITY/COUNTRY PRICE Request
This course can be scheduled at your convenience, to request this course please click here
INTRODUCTION:

 

  • It is estimated that electrical drives and other rotating equipment consume about 50% of the total electrical energy consumed in the world today (and this figure increases to 70% if you only consider industry.)  The cost of maintaining electrical motors can be a significant amount in the budget item of manufacturing and mining industries. This course gives you a thorough understanding of electrical motor’s protection, control and maintenance and gives you the tools to maintain and troubleshoot electrical motors.
  • You will gain a fundamental understanding of the protection, control and maintenance of electric motors and drives. Typical applications of electric motors in manufacturing, materials handling, process control are covered in detail. The concluding section of the course gives you the fundamental tools in troubleshooting motors confidently and effectively.
OBJECTIVES:

 

  • Upon completion of the course participants will be able to:
    • Specify protection requirements for motors
    • Maintain electrical motors
    • Specify  speed control requirements for motors
    • Understand essentials of motors and drives
    • Detail the main issues with testing of motors
    • Prevent or at least minimise motor bearing failure
    • Troubleshoot and fix faults on motors and drives
    • Interface control circuits of motors with PLC’s/DCS’s
    • Reduce downtime on electrical motors
    • Improve plant safety
    • Improve plant throughput
    • Reduce your spares usage and requirements
OUTLINE:

 

Day 1:

 

  • Fundamentals of Motor Technology and Construction 
  • Basic principles of rotating electricmachines
  • Fundamental principles of speed control
  • Efficiency, torque, inertia, horsepower/power factor
  • Torque-speed curves
  • Induction/synchronous/wound rotor types
  • Basic construction and physical configuration, windings
  • Principles ofoperationand performance
  • Three Phase Ac Induction Motors
  • Components
  • Theory ofoperation
  • Inductionmotor design
  • Duty cycles
  • Insulation and Cooling requirements
  • Starting methods
  • Selectingmotors
  • Types of faults, fault finding and testing of ACmachines
  • Testing instrumentation

 

 

Day 2:

 

  • Energy Losses and Efficiency of Three Phase Ac Induction Motors
  • Standards
  • Types of Losses
  • Tests formeasurement and computation of losses and efficiency
  • Dynamometers
  • Principles of load application by braking
  • Torquemeasurement basics
  • Types of practical dynamometers
  • Motor Failure Analysis
  • Frequent starts
  • High inertia
  • Inadequate cooling
  • Congestion on fan cover
  • Improper spacing at end ofmotor
  • Incorrect belt alignment
  • Solid belt guards
  • Excessive loading causing bearing clearance problems
  • Insulation failures
  • Bearing current problems

 

 

Day 3:

 

  • Testing
  • Insulation life and resistance
  • Polarization index
  • DCHipot
  • DCramp test
  • AC hipot
  • Capacitance test
  • Dissipation factor
  • Partial Discharge
  • Surge test
  • Mechanical testing
  • Online testing
  • Bearing Failure Analysis
  • Bearing failures
  • Grease and greasing
  • Belt Drive aspects
  • Balance
  • Storage issues
  • Service factor loading
  • Protection Of Motors
  • Thermal overload
  • Time constraints
  • Early relays and new digital relays
  • Starting and stalling conditions
  • Over Current / Overload
  • Under-voltage / Over-voltage
  •  

 

 

Day 4:

 

  • Under frequency
  • Pole slip / Out of step
  • Loss of excitation
  • Inadvertent energization
  • Over fluxing
  • Stall protection / acceleration time / Start up supervision /Time between starts
  • Unbalanced supply voltages
  • Negative sequence currents
  • De-rating factors
  • Earth faults – core balance, residual stabilising resistors
  • Calculation of protective relay settings
  • Motor Control
  • Power Circuit
  • Control Circuit
  • Full Online voltage starting
  • Reduced voltage starting
  • Delta-star
  • Resistance
  • Reactor
  • Autotransformer
  • Soft start

 

Day 5:

 

  • Control SystemFor Ac Variable Speed Drives
  • Overall control system
  • Power supply for the control system
  • Dc Bus charging system
  • VSD control loops (Open Loop/Closed loop)
  • Vector control
  • Current feedback in ac variable speed drives
  • Speed feedback frommotor
  • Installation And Fault Finding
  • General installation and environmental requirements
  • Power supply connections and earthing
  • Where to install contactors in power circuit
  • Installation of ac converters intometal enclosures
  • New Technologies and Developments
  • Summary, Open Forum and Closing
  • Speed Control
  • Reversing
WHO SHOULD ATTEND:

 

  • Anyone associated with the use of electrical motors in the industrial or automation environment.  The course will also benefit those working in system design as well as site commissioning, maintenance and troubleshooting.
  • Plant Engineers
  • Instrument Technicians
  • Engineering and design personnel
  • Operations personnel
  • Electrical Maintenance Technicians
  • Instrument and Control Engineers
  • Electrical Contractors
  • Electrical consulting engineers
  • Process control Engineers
  • Mechanical Engineers
  • Service Technicians
  • Maintenance Personnel
  • Electrical Maintenance Supervisors
DURATION:
    • 5 Day(s)
  •  


    The presentation is generally appealing to me. The dedication & devotion of the instructor are both laudable & admirable.
    Mohammed F. Alotaibi
    Sabic

    Really this course is important for any inspector, so I will recommended it for our employees. And thanks a lot!
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    Sabic

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    Al-Zamil CoolCare

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    Sabic

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    Sabic

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    Mobily

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    General Authority of Civil Aviation (GACA)

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    Sabic

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    Sabic

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    Al-Suwadi Services

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    Coldstorec Group Of Saudi Arabia

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    Saudi Aramco

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    Al-Suwadi Services

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    Al Khodari Company

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    Mohammed Rashed Afifi
    Al Khodari Company

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    Al Khodari Company

    The instructor is very knowledge and hard working, his way of teaching is very good.
    Ibrahim Darwish
    Al Khodari Company