- 5-Day Training Course
LV/MV/HV Circuit Breakers and Switchgears: Specification, Design, Operation, Inspection, Testing, Maintenance, Repair & Troubleshooting
| Date | Venue | Fees | Enroll |
|---|---|---|---|
24 Mar - 28 Mar 2025 |
Kuala Lumpur - Malaysia |
$6,500 |
|
26 May - 30 May 2025 |
Dubai - UAE |
$5,500 |
|
28 Jul - 01 Aug 2025 |
Lisbon – Portugal |
$7,500 |
|
22 Sep - 26 Sep 2025 |
Dubai - UAE |
$5,500 |
|
24 Nov - 28 Nov 2025 |
Dubai - UAE |
$5,500 |
|
29 Dec - 02 Jan 2025 |
Amsterdam - The Netherlands |
$6,500 |
Course Introduction
This intensive five-day training is designed to update participants with the latest development of Circuit Breakers and to present some of the more common and updated aspects of low, medium and high voltage switchgear maintenance. It must be understood that there is an incredible variety of equipment used on low, medium and high voltage switchgear today. Switchgears play an important role in the distribution and control of electrical power in manufacturing or power plant and in a utility distribution system. Negligent maintenance practices can lead to power system inefficiency and loss of system reliability.
An older plant may have switchgear that was built in the forties in the older areas and modern switchgear in other areas as the plant was upgraded. This course will present maintenance problems to the maintenance manager and technician. Newer plants will have the modern equipment of a limited variety and manufacture. It is these similarities that will be covered in the course.
Objectives
By the end of the training, participants will be able to:
- Design, inspect, maintain, repair and troubleshoot circuit and switchgears
- Apply an in-depth knowledge and skills on LV/MV/HV circuit breakers and switchgears
- Describe switchgear details such as ratings, degree of protection, service conditions and ancillary equipment
- Explain switchgear asset management including CBM and RCM process, tripping devices, maintenance and testing
- Apply load and fault calculation to decide the task of protection system and the operating conditions of power system
- Explain circuit breaker control circuits, types and application of protective relays, structure of control circuits and the use and application of current and voltage transformers
- Discuss circuit breaker characteristics in relation to protection control circuits, selectivity, sensitivity and speed of the control circuits
- Recognize the value of earthing system to protection control circuits and the power system protection as well as fault clearance and power redundancy through control system application
- Identify the various switchgear diagnostic techniques and employ the different types of substation circuit breaker techniques and determine the switchgear vital equipment including batteries condition and monitoring, relay applications for basic complex busbar arrangement and zone selection
- Employ substation maintenance techniques and discuss their description, structures, features and functions
- Apply the switchgear maintenance practices and improve maintenance and repair procedures
- Carryout maintenance work orders including their process development, procedures and problems encountered
- Introduce computerized maintenance management systems (CMMS) and recognize its importance in circuit breaker design, inspection, maintenance, repair and troubleshooting.
Training Methodology
- 40% Lectures, Concepts, Role Play
- 40% practical Workshops & Work Presentations, Techniques & Case Studies & Practical Exercises of Circuit breaker testing and data required (Low Voltage & Medium voltage)
- Minture
- Molded
- SF6
- Vacuum
Switchgear Accessorizes (CT ,VT ,Gague , Protection Relays ) § Connection and testing of KW meter, KVAR, Frequency ,…..
- Connection and testing of Protection Relay
Testing of Protection Relay
- 20% Videos, Software & General Discussions
Target Audience
This training course is suitable to a wide range of professionals but will greatly benefit:
- Electrical Engineers
- Electrical Supervisors
- Maintenance Technicians
- Managers in-charge of Instrument Installations
- Project Engineers
- Technical Staff
Daily Topics
PRE-TEST
- GENERAL INTRODUCTION
- Electrical engineering basic concepts
- Three phase review and per unit
- Voltage levels
- One line and three-line diagram
- Generation system layout
- Transmission system layout
- Substation system layout
- Distribution system layout
- INDUSTRIAL SWITCHGEARS
- Fuses
- Auto-reclosers
- Automatic sectionalizer
- Circuit Breakers
- Isolator switches
- Load switches
- Relays
- Current transformers
- Voltage transformers
- CB DESIGN SPECIFICATION BASED ON SHORT CIRCUIT CURRENT LEVEL
- Per unit system
- Faults on power systems
- Transient phenomena in power system
- Symmetrical component analysis of three phase network
- Network connection for various fault types
- Current and voltage distribution in system due to a fault
- Effect of system on zero sequence quantities
- Computer programs based short circuit calculation
- CB DESIGN SPECIFICATION BASED ON ARC PHENOMENA AND CIRCUIT INTERRUPTION
- Arc phenomena
- Maintenance of the Arc
- Properties of Arc
- Arc Interruption theory
- Circuit Breaker Rating
- Circuit constants and circuit conditions
- Conditions of severity
- Re striking voltage transient
- Class A ultrafast transients
- Class B system transients
- Class C low transients
- Transmission line transient
- Switching transients
- Duties of Switchgear
- LV CIRCUIT BREAKERS
- Low voltage molded case current limiting circuit breakers
- Low voltage molded case circuit breakers with high breaking capacity
- Insulated case circuit breakers
- Low voltage air circuit breakers
- Low voltage circuit breakers specification
- MODERN MV AND HV VACUUM CB
- Introduction
- Advantages of vacuum interruption
- Vacuum contactors and interrupters
- The vacuum medium
- The vacuum arc
- Vacuum arc stability
- Vacuum break down
- Vacuum switch construction
- Applications of vacuum circuit breakers
- MODERN MV AND HV SF6 CB INTRODUCTION
- Basic Features of SF6 Breakers
- Dielectric properties of SF6
- Quenching properties of SF6
- Construction of SF6 breaker
- SF6 CB types
- Puffer type SF6 breakers
- Double Pressure System
- Single Pressure Puffer-Piston System
- Single Pressure Self Blast System
- Improvement in SF6 Breakers for HV
- OTHER TYPE OF CIRCUIT BREAKERS
- Air Circuit Breakers o Method of increasing arc resistance
o Plan break type o Magnetic blow out type o Arc splitter type o Application o Construction and operation o Axial air CB o Blast air CB
- Oil Circuit Breakers o Arc rupture under oil o Advantages of oil o Disadvantages of oil o Plan break oil circuit breakers o Arc control circuit oil breakers o Minimum oil circuit breakers o Construction and operation
- DC Circuit Breakers o Construction o Methods of interruption o Application
- CIRCUIT BREAKER INSPECTION, MAINTENANCE AND SERVICES
- Inspection
- General inspection technical procedure
- Daily inspection of circuit breakers
- Annual inspection of circuit breakers
- Disassembly
- Cleaning
- Tightening
- Lubrication
- Equipment’s used in testing
- Testing procedure
- Direct testing
- Contact resistance test
- Insulation resistance test
- Test report
- Indirect testing
- One-hour Video, HV CB Maintenance and Repair
- CIRCUIT BREAKERS CONTROL, PROTECTION AND TESTING
- Switchgears control devices and wiring
- Switchgears protection devices and wiring
- Testing Classification
- Testing laboratories
- Description of a simple testing station
- CB TROUBLESHOOTING
- Low insulation Resistance (below 2000 Mega-ohms) between a) Phase terminal and earthed frame, with breaker closed b) Phase terminals of a pole
- Resistance between Terminals of Pole too high (above 100 microhms) (15 micro-ohm per joint) contact
- Unequal contact Wipe and Travel in 3-pole Measured from top surface of interrupter flange and the contact lip by a simple rod with a) breaker open and b) breaker closed
- One of the pole docs not close
- Breaker operation too Slow During opening timing from trip command to contact separation instant too large (60 ms instead of say 40 ms)
Course Conclusion
POST-TEST and EVALUATION
For registration & more information please contact
NAYEL Training Centre
T: +971 4 379 7245 | M: +971 50 249 6876 WhatsApp +971 50 249 6876
Email [email protected]
