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Electrical Maintenance for Industrial Plants

5 days IR/ELECMAIN
Level
Foundation
Audience
  • Electrical technicians, supervisors & inspectors, operation and maintenance staff as well as reliability engineers.
Purpose
  • This course provides a better understanding of electrical equipment such as generators, motors & power grids. It includes performances, operation, main failures, hazards & safety.
Learning Objectives
  • Upon completion of the course, participants will be able to:
  • understand a plant grid & its structure,
  • master electrical equipment including motor operating principles,
  • detect the main disturbances & failures related to electrical motors,
  • understand the roles of the safety parts.
Prerequisite
  • Basic knowledge in electricity.
Ways and means
  • Drawings and datasheets used in the industrial plants.
  • Practical exercises & case studies.

CHARACTERISTICS OF PLANT ELECTRICAL DISTRIBUTION 0.5 day
  • Purpose of electrical distribution, characteristics of the grid. One line electrical diagram.
  • Main grid, auxiliary grid, safety grid. Application to a typical grid.
SUB STATION EQUIPMENT & WORKING PRINCIPLE OF SWITCHGEAR 2 days
  • Purposes and uses of equipment, as well as its maintenance first level.
  • Operation & technical characteristics.
  • Transformers: purpose of transformer on a power grid; operating principle, single phase to tri phases; windings connection & protections.
  • Circuit breakers: operating principle, technologies, main failures.
  • Cables, switchboards, equipment, relays, diesel generators, batteries, chargers and UPS.
  • Gas insulated substation: principle and technology.
SAFETY EQUIPMENT & RELIABILITY 1 day
  • Main types of protections. Earthing system choice LV&HV: advantages and drawbacks.
  • Selectivity of protections: mains techniques. Protection relays. Insulation monitoring.
  • Hazardous area (ATEX) equipment: standards and maintenance rules.
  • LockOut -TagOut procedures (LOTO).
INDUCTION & SYNCHRONOUS MOTORS 1 day
  • Operation & technical characteristics (intensity, efficiency, power factor and torque).
  • Field of use of power and voltage range HV & LV. Technology and hazardous area (ATEX).
  • Variable speed drive, type of drives; consequences on the grid. Electrical protection of motors.
  • Synchronous motors: torque control, excitation, different technologies.
  • Induction motors: various types of starting according to the mechanical load & power of the motor. Constraints from the grid; maximal numbers of launches. Application: failures and maintenance.
STEAM TURBINES GENERATORS 0.5 day
  • Mechanical characteristics of the steam turbine generator. Technology and operation of the electrical generator.
  • Isolated mode & coupling of the generator: impact on the grid.
  • Application: maintenance and failures.