Saturday, June 10, 2017

Training Motor Control and Protection

DESCRIPTION

In this program, students will learn about protective switches including fuses, circuit breakers, and motor overload heaters, as well as their respective overload contacts. Methods of troubleshooting these components are also covered. Fuse curves are presented to solidify the understanding of fuse operation and protection and how to select the proper fuse. Also covered is the effect of ambient temperature on thermal overloads and how they can affect motor control protection.

OUTLINE

A. Motor Control Fundamentals

1. AC Motors

Induction
Synchronous
Wound Rotor

2. Power System Effects on Motors

Voltage
Frequency
Harmonics

3. Application of Motor Loads

Variable Torque
Constant Torque
Constant Horsepower

4. High Efficiency Motors

Cost vs. Energy Saving Analysis
Inrush Characteristics
KVA Code

5. Power Factor Correction

What is power factor?
Methods to improve it

B. Motor Control Techniques

1. Symbology and Terminology

Basic Symbols
The Power Circuit
The Control Circuit

2. Starting Methods

Full Voltage
Reduced Voltage
Wye-Delta
Soft Starting
Vacuum Contactors

3. Stopping Methods

Dynamic Braking
Plugging
Mechanical Braking

4. Speed Control

Separate Winding
Consequent Pole
Wound Rotor
Mechanical
Variable Voltage
Variable Frequency

C. Protection of Motors

Thermal overload
Time constraints
Early relays and new digital relays
Starting and stalling conditions
Over Current/Overload
Under-voltage/Over-voltage
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 stabilizing resistors
Calculation of protective relay settings

D. Motor Failure Analysis

1. Electrical Failures

Insulation Failure
Thermal Heating
Harmonic Heating
Improper Grounding

2. Mechanical Failures

Bearing Failures
Belt Alignment
Shaft Alignment

3. Load Related Failures

Application Abuse
Overloading

PARTICIPANT

Electrical engineers and Technical Staff who have to deal with the aspect of electrical motor protection, control and operation.

TRAINING METHOD

Group Discussions
Group & Individual Exercises
Presentations
Games
Case Studies
Role Plays
Self-Assessment
Action Plan

FACILITIES

Certificate,
Quality Training Kit (Pencil case: Erase, Bolpoint, Pencil, Tipe X, Stabillo, Flash Disk 8 GB),
Bag.
Training Material (HandOut & SoftCopy)
Convenient training facilities in stars hotel (Public Training)
Lunch and Coffee Breaks (Public Training)
Souvenir

Permintaan Brosur penawaran Training ( Harga, Waktu dan Tempat) silahkan Menghubungi kami.

Catatan :

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