Professional Certificate of Competency in Circuit Breakers, Switchgear and Power Transformers
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Good courses, they provide practicals as good as in real life.
← | →
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Online material was easy to use and webinars were best.
← | →
Foundation degree
Online
Description
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Type
Foundation degree
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Methodology
Online
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Duration
3 Months
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Start date
On request
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Online campus
Yes
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Delivery of study materials
Yes
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Support service
Yes
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Virtual classes
Yes
In this interactive 3 month LIVE ONLINE course, you will learn how to:
Describe the fundamentals of operating switchgear and circuit breakers
Select appropriate type and rating of circuit breakers and switchgear
Understand the operation of switchgear components (CTs, VTs, relays and cable terminations)
Describe the principles of operation of power transformers
Identify and apply the different transformer types
Set up simple transformer protection schemes
Detail power transformer testing procedures
Manage power transformer breakdowns to minimise disruption
Detail safe working procedures in switch rooms, indoor and outdoor substations
Draw up simple operational policies for safety rules
Detail practical maintenance strategies for switchgear and transformers
Facilities
Location
Start date
Start date
Visit website
Reviews
-
Good courses, they provide practicals as good as in real life.
← | →
-
Online material was easy to use and webinars were best.
← | →
Course rating
Recommended
Centre rating
M.Zihumo
S.Lucassen
This centre's achievements
All courses are up to date
The average rating is higher than 3.7
More than 50 reviews in the last 12 months
This centre has featured on Emagister for 6 years
Subjects
- Systems
- Installation
- Dielectric absorption test
- Design criteria
- Electrical Engineering
Course programme
Overview
Switchgear (and circuit breakers) and transformers are critical components in electrical distribution systems and their operation significantly affects the overall performance of the system. This course will discuss the application, installation, maintenance and testing issues relating to medium and high voltage switchgear, circuit breakers and transformers. Low voltage switchgear will also be covered and you will receive a thorough grounding in switchgear theory and standards. You will gain a solid understanding of the issues associated with the proper application, installation and maintenance of these critical items of equipment with an overriding emphasis on safety. The emphasis is on medium voltage (referred today as high voltage) switchgear which represents most of the switchgear installed on electrical distribution systems. The focus is on air blast, oil, SF6 and vacuum circuit breakers.
Case studies covering the main manufacturers' equipment will illustrate the important practical principles. Other power system protection components will be discussed as well to ensure that switchgear is understood in the correct context. Installation of high voltage distribution and transmission equipment has increased significantly over the years due to ongoing global demand for power. As a result, the need to ensure reliability of operation of power systems is paramount. Power transformers are among the most important and most expensive components of power systems. Their failure can impose extraordinarily high costs on plants, factories and utilities of all descriptions. It is critical that all personnel operating and working with such equipment have a sound knowledge of their operational requirements and maintenance.
This practical course provides knowledge on both the theory and operation of power transformers. The course will develop and enhance an understanding of what is involved in the maintenance of these essential components of the power systems, through the tips and tricks learnt and developed by some of the world's pre-eminent electrical engineers.
Course Outline
MODULE 1: INTRODUCTION TO SWITCHGEAR AND TRANSFORMERS
- Single line diagrams
- Active and passive network components
- Circuit breaker utilisation
- Alternative forms of MV switchgear – ring main units and load breaking/fault making switches
- Fuse switches
- HV fuses in combination with and as alternatives to circuit breakers
- Auto-reclosers and auto-reclose operation
MODULE 2: APPLICATION OF SWITCHGEAR
- Principles of current interruption
- Plain break circuit breakers
- Bulk and small oil volume circuit breakers
- Turbulator (explosion pot)
- Operating mechanisms
- Transfer earth circuit breakers
- Air break and air blast switchgear
- SF6 and vacuum
- Switchgear in association with isconnectors
- Fixed and withdraw-able designs
- Switchgear standards
- Factors affecting switchgear selection
MODULE 3: SPECIFICATION OF SWITCHGEAR
- Switchgear ratings - highest system and impulse withstand voltages, load and short circuit currents
- Simple and complex protection systems
- Switchgear ancillaries, measurement CTs, VTs and relays
- Cable terminations
- Indoor and outdoor operation
- Substation and switch room layouts and design
SHORT CIRCUIT TESTING
- Symmetrical and asymmetrical breaking
- Make and break operations
- Understanding test oscillograms
- Case study - Specification for a 132 KV Switchboard
MODULE 4: SAFETY POLICIES
- General safety precautions and the use of personal protective equipment
- Principles of safety rules
- Principles of personal authorization
- Operative training for safe operation of switchgear
- Isolation in a circuit breaker context
- Safety documentation
- Operational and safety locking, caution and danger notices
- Work safety in a substation environment
- Safety interlocks
- Substation alarms
- Individual study tasks and presentation - safety policies in my company and how they might be improved
MODULE 5: OPERATION OF MODERN SWITCHGEAR
Case Studies
- Sprecher and Schuh
- Schneider
- ABB
- Siemens
ASSETS MANAGEMENT IN A SWITCHGEAR CONTEXT
- Principles of time and condition based asset management
- Asset registers
- Asset management systems
MODULE 6: DIAGNOSTICS, TESTING AND MAINTENANCE
- Switchgear inspection methodologies
- Partial discharge measurement and survey
- Timing tests
- Thermovision
- Mechanisms of deterioration
- Principles of circuit breaker maintenance
- Maintaining oil circuit breakers
- Contact maintenance and contact wipe
- Oil testing
- Maintaining vacuum circuit breakers
- Maintaining SF6 circuit breakers
- SOPs and DINs
- Switchgear defects and defect control Systems
MODULE 7: TRANSFORMERS' MAIN FUNCTIONS AND CLASSIFICATION
- Construction (shell type and core type)
- Classification and type in relation to insulation, windings, core, cooling systems, voltage level, sizing, tank and breathing action
- Transformer parts
POWER TRANSFORMERS AND SAFETY
- How to install, operate and work with high voltage power transformers safely
- Earthing of HV transformers
MODULE 8: TRANSFORMER THEORY
- Electrical values and their definition in a power transformer - voltage, current, number of turns, impedance and their interrelation
OPERATION OF POWER TRANSFORMERS IN A POWER SYSTEM
- Thermal performance, loading, paralleling, tap-changing, connections and vector groups
MODULE 9: POWER TRANSFORMER PROTECTION
- Surge protection
- Protective relaying (differential, over-current and earth fault)
- Buchholz relay and pressure relief relay
- Thermal devices and instruments (oil temperature alarm and trip, winding temperature alarm and trip)
MODULE 10: AUTO-TRANSFORMERS, GENERATOR TRANSFORMERS, UNIT TRANSFORMERS AND STATION TRANSFORMERS
- Design criteria
- Specifications
MODULE 11: OIL QUALITY
- Oil contents: water, acidity and dissolved gas
- Oil tests: dielectric breakdown, moisture, resistivity, interfacial tension, specific gravity, power factor and furan analysis
- Recovery voltage measurement test
MODULE 12: POWER TRANSFORMER ELECTRICAL TESTS
AC Tests:
- Power factor tests (insulation, oil, and bushings)
- Single phase excitation current test
- Transformer turns ratio test
DC Tests:
- Insulation resistance test
- Dielectric absorption test
- Polarization index test
- Step voltage test
- Hi-pot test
PREVENTATIVE MAINTENANCE ON POWER TRANSFORMERS
- Techniques to improve life expectancy
Software/Hardware Used
Software
- N/A
Hardware
- N/A
Professional Certificate of Competency in Circuit Breakers, Switchgear and Power Transformers