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DMN3-SP Engineering in Mining - Circuit Breakers and Switchgear

  • Duration:
  • Price: US$ 249
Certificate:

Must complete all lessons

Description

Selective co-ordination is a very important aspect of power system protection design. When a short circuit or an abnormal power flow occurs for a sustained period of time, the protective devices should react to isolate the problem with minimum disruption to the balance of the system. 
This course is designed to help students to understand the fundamentals and operation of protection system including switchgear, fuses and circuit breakers.
After completing this course, students will be skilled in the operation of electrical power protection devices that improve the safety of the system.

 

WHO SHOULD COMPLETE THIS COURSE

  • Electrical  Engineers
  • Supervisors
  • Technicians
  • Plant Engineers
  • Instrumentation Engineers
  • Electricians 
  • Design Engineers
  • Project and/or Construction Engineer
  • Maintenance Engineer
  • Facilities Engineer

COURSE OUTLINE
RATINGS AND SPECIFICATIONS OF SWITCHGEAR

  • Standards and factors affecting circuit breaker selection
  • Switchgear ratings and specifications
  • Switchgear rating
  • Rated insulated level

FAULTS ON SWITCHGEAR

  • Symmetrical vs Asymmetrical faults
  • Locking and Interlocking devices
  • Degrees of protection
  • Gas leakage rates
  • Testing for Internal fault
  • Ring main units

PROTECTION SYSTEM

  • Types of protection
  • Current transformer types
  • Relay types
  • Differential protection
  • Restricted earth fault
  • Switch room layout

FUSE TYPES AND APPLICATIONS

  • Power system protection basic qualities
  • Protection philosophy
  • Standards and characteristics of fuse
  • General rules for selection 
  • Special fuse types
  • Fuse switch in cross section

AUTO RE-CLOSING

  • Re-closed overhead line network
  • Typical auto re-close sequence
  • Pole mounted, Oil filled re-closer
  • Vacuum interpreter in SF6 auto re-closer

TYPES OF CIRCUIT BREAKERS

  • Bulk oil circuit breakers
  • Minimum oil circuit breakers
  • Air blast circuit breakers
  • SF6 circuit breakers
  • Vacuum circuit breakers
  • LV circuit breakers

SAFETY

  • Principle levels of competency
  • Safety clearances
  • Switching for safety
  • Inspection checklist

FULL PERSONAL PROTECTIVE EQUIPMENT

  • PPE
  • Hazardous liquids chart
  • Fire extinguisher system
  • Portable extinguishers

EXAMPLES OF CIRCUIT BREAKERS TYPES

  • Indoor metal enclosed type
  • Metal enclosed and metal clad
  • Metal clad CB panel
  • Insulation for switchgear

REYROLLE PACIFIC VACUUM CIRCUIT BREAKERS AND SWITCHGEARS TYPE LMVP

  • Highlights
  • Circuit breakers
  • Interior sections of CB
  • Interrupter replacement
  • Operating mechanism 

SPRECHER+SCHUH SF6 CIRCUIT BREAKER TYPE BS 107K IN CUBICLE PF 107

  • Salient features
  • Ratings
  • Arrangement of removable truck
  • Cross sectional view
  • Operating mechanism
  • Schematic view of mechanism

RING MAIN UNIT SWITCHGEAR

  • Fuse switch in cross section
  • Ratings of switch
  • Case study
  • Factors to consider

ASSET MANAGEMENT

  • Components of cost 
  • Comparative circuit breaker life time costs
  • Asset management objectives

ASSET REGISTERS

  • CONDITION BASED MAINTENANCE (CBM)
  • Reliability centered maintenance
  • Risk matrix
  • Insulation deterioration
  • Semi-permanent monitoring
  • Continuous monitoring

PARTIAL DISCHARGE

  • Locating partial discharge sites
  • Partial discharge testing by acoustic methods
  • K&R contact micro-ohm meter
  • Measurement of contact resistance
  • Trip coil monitoring
  • SF6 gas monitoring
  • Some checks and tests on SF6 breakers

SWITCHGEAR MAINTENANCE PROCEDURES

  • Maintenance items specific to distribution switchgear
  • Problem found during maintenance 
  • Action diagram

HARMONICS AND UNBALANCED SUPPLY VOLTAGES

  • What is harmonics
  • Linear and nonlinear loads
  • Characteristics and components of harmonics
  • Overheating of transformers
  • Limits of harmonics in power system

INTRODUCTION TO HAZARDOUS AREA

  • Hazardous liquids charts
  • Piper alpha
  • Risk assessment 
  • Electrical equipment as ignition sources
  • Vapour density

RISK ASSESSMENT

  • Dusts
  • Equipment
  • Gas/Apparatus/Equipment grouping
  • Temperature classification

EXPLOSION PROTECTION TECHNIQUE

  • Selection types for ignition prevention
  • Examples for explosion protection system

Price

Plan Name Price
Unlimited Access for 2 Years: US$ 249

Instructor

Deepak Pais

B.E (Electrical & Electronics)

Deepak started his career within the Zinc mining & smelting industry as Project Engineer in Substation & Distribution Greenfield project. He then worked in a Marine and Logistics firm in the Bahamas as Maintenance and Commissioning Engineer. Following this he worked with Japanese and German automobile firms as Maintenance Engineer for Distribution and Utility related systems. He currently works as an Engineer in a regional NSW electricity Distribution utility.

Deepak has hands on experience in Distribution, Utility and Substation related systems. He has a particular interest in the consistent interpretation and implementation of Greenfield and Brownfield Standards with an emphasis on safety, reliability, economy and whole of life cost analysis.

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