HV/MV Switchgear, Inspections, Maintenance &Technology
Workshop
Course Description
WHY CHOOSE THIS TRAINING COURSE?
This Workshop explains typical switchgear maintenance, configurations and arrangements, typical problems encountered in the field, and means of extending the life of HV/MV switchgear. The course also highlights training, safety considerations and provides practical guidance for operation, condition monitoring, maintenance, and testing of HV/MV switchgear.
Switchgear, like many other types of industrial equipment, is often unnoticed and neglected until it fails to function normally. The level to which switchgear is maintained in the industry varies significantly.
- Maintenance levels at one extreme might involve ‘Condition Monitoring’ (Continuous Monitoring) of equipment with linear or rotating transducers.
- At the other end of the spectrum, maintenance might only involve doing Periodic Maintenance Tasks (PMT), Inspections or even Major Maintenance Task (MOT).
- One can also run equipment until it breaks down or even self-destructs.
- The vast majority of appropriate switchgear maintenance programs will fall somewhere in between these extremes.
All training courses offered by Peganix have CPD points allocated to them and we are confident that the benefits of attending are obvious and reflect the quality associated with accreditation.
Who should attend?
- Municipalities
- Eskom
- Transnet
- Plant Electricians
- Electrical Maintenance Personnel
- Electrical Contractors
- Heads of Plant Engineering
- Heads of Technical Services
- Senior Technicians
- Senior Engineers
- Engineering Technologists
- Senior Technical Supervisors
- Senior Electricians
- Project Managers
- Chief Electricians
- Operation Manager
Walk Away With the Knowledge and Skills to…
- Understand the mechanical theory of switchgear
- Carry out correct application methods and ensure a longer life span on your MV and HV Switchgear
- Able to source spares
- Able to choose the correct CB by implementing a ‘specification & requirement’ list.
- Implement effective testing methods that work!
Attend this event and….
Take part in interactive discussions on application, installation, maintenance, and testing issues relating to switch-gear
Gain a solid foundation in switchgear mechanism & interrupter theory
Learn from a recognized expert with international & cross-industry experience
Build a thorough understanding of issues associated with switchgear equipment and an emphasis on safety
At the end of the program, the delegates will be aware of diagnostic tools that aid the planning of maintenance, understand the changing requirements placed on the
DAY ONE
Introduction to trainer
# Substation layout overview
- Current Transformers(CT)
- Voltage Transformers(VT)
- Transformer
- Circuit Breaker(CB)
- Isolator
- Surge Arrestors
# Different types of switching equipment
- Isolator
- Circuit Breaker
- Switching Resistors
- Grading Capacitor
# Introduction to Circuit Breakers
- What is a circuit breaker?
- Circuit breaker construction & operation
# Circuit breaker limb / pole / Interrupter chamber
- Function of the SF6 nozzle Function of the turbulator.
- Moving, fixed & Transfer’ contact operating theory
# Types of switchgear
- Oil as insulation
- Sf6 as insulation
- Vacuum as insulation
- Air blast’ compressed air as insulation
- GIS (Gas insulated Switchgear)
# Characteristics & expected functions of the Circuit Breaker
# Circuit interruption
- Short time current carrying capacity
- Short circuit current rating
- Recovery voltage versus Dielectric strength
# Auxiliary contacts and electrical interlocks
# Overstressing the switchgear
- Substation & equipment KA ratings
# Oil Circuit Breakers
- Advantages / disadvantages
- Insulating liquids
- The effect of impurities on mineral oil
- Circuit interruption [oil]
- Small oil volume circuit breaker
- Self test
# Arc control devices
- Function
- Different types
# SF6 Circuit breakers
- Development
- Advantages / disadvantages
- 1st, 2nd, 3rd generation SF6 CB
- Blast nozzles
- Sf6 gas testing
- Absolute versus atmospheric pressure
- Sf6 handling
# Sf6 Gas medium
- Sf6 handling
- Standardize gas fittings
- Filling equipment
- Testing equipment
- Sf6 gas leak detection / 2 x usa videos
- Measure main contact penetration in arcing chamber [external measurement]
- Measure arcing contact burn off in arcing chamber
[external measurement] - Nozzle function versus turbulator for arc extinguishing
- Topping up SF6 gas! Can we do this with CB alive?
- Self-test
# Vacuum Circuit Breakers
- Development
- Advantages / Disadvantages
- Theory & Function
- Different types
- Self test
# Air blast Circuit Breaker
- Theory
- Advantages / disadvantages
- Function
- Different types
# GIS / Gas Insulated Switchgear
- Description of GIS main components
- Switching components functions and applications
- Technical evolution of GIS
- Gas circuit breakers arc extinction
- Disconnectors and earth switches construction and operation
- Structural Components, busbars and support insulators
# Substation Relay Protection philosophy
- Basic System Protection Concepts
# Earthing
- Substation earthing
- Lightening protection
- Lightening protection
- High voltage surge protection
# Circuit Breaker ratings
- Short time current carrying capacity
- Short circuit current rating
- Opening and closing switching resistors
- Grading capacitors
# Latest technology in Switchgear
- Dead tank CB’s
- Shunt motor drive CB’s
- Abb ‘pass’CB’s
- Hybrid Switchgear
# Safety in ‘Live’ Electrical Environment
- Why is ORHVS certification so important
- Safety in the workplace
DAY TWO
# Types of Maintenance
- Breakdown
- Inspections
- Periodic
- Major
- Testing
# General Circuit Breaker maintenance: Philosophy & Requirements
- Scope of works
- Competency certificated
- Trained staff or certificated contractor ensuring maintenance activities are carried out effectively
- Manufacturers manual
- Special tools available on site
- Maintenance spares available on site
- NB Inspection task
- NB Periodic maintenance task
- NB Major overhaul task /nozzle inspection/nozzle replacement
- Slow closing’ philosophy
- Oem (Original Equipment Manufacturer)
retrofits? - CB inherent problems, mechanical adjustments, and troubleshooting discussion
- Minimum closing energy philosophy
- Pretension philosophy
- Correct lubrication
- Bushing flange cementation inspection and repair
- Defect management
- Failure analysis
# Circuit Breaker mechanism
- Check list
- Different types:
hydraulic/pneumatic/spring/torsion bar etc - Function / design
- Safety aspect: All energy springs discharged, CB open, CB isolated & earthed
- Mechanical operating theory
- Check CB operation by operating CB at minimum closing energy
- How to determine if closing spring has stretched / deviation
- Self test
# Mechanical Operation
- Spring
- Hydraulic
- Pneumatic
# Choosing the correct Circuit Breaker for your application
- Draw up CB specifications before purchase
- Determine which CB is reliable and maintenance-friendly. What to buy
# Maintenance philosophy & planned maintenance program
- Setting maintenance standards
- Maintenance and service schedules
- Data capturing
- System studies
# Circuit Breaker testing
- Contact resistance testing
- Velocity testing
- Timing testing
- Dynamic resistance testing
- Density monitor for correct operation and settings [low gas / inhibit alarms]
- Sf6 dew point
- Sf6 acidity / impurities
- Sf6 content [%]
- Minimum close tension
- Clutch slip if required
- Coil resistances
- Insulation testing
- Mechanical close & trip latch resistance checks
- Oil sampling.
# Training available including evaluation:
- What are the necessary tools, training / skills needed to improve the reliability of your HV/MV switchgear?
· Technical training to provide skills required to improving the reliability of switchgear. This includes inspection, pmt, mot, breakdowns and specialist level. - General worker training
- Nozzle replacement
# Condition monitoring
- What is to be monitored???
- How is it to be monitored???
# Thermography / Infrared Scanning
# Corona Phenomena
# Single line diagram interpretation
# HV Aluminum clamp maintenance
CERTIFICATION
Successful participants will receive Peganix’s Certificate of Completion.
All attendees to a Peganix accredited course receive a Certificate of Accreditation acknowledging their training and their journey to New Skills, New Thinking. Independent research has verified that this recognition is highly valued by your employees.
In-person / On Location
Our team and, your health and safety are our top priority. We have limited our registration numbers to 25 people per meeting to provide enough distance per person, hand sanitizers with face masks will be provided for all attending delegates and a temperature scanner will be available at the venue.
Our team and the venue are fully prepared to assist you.
Live Online / Virtual
Registered delegates can log in and join the live meeting. The online platform will not limit your participation, as you can engage on the platform via live chat text, audio, or video. All live meetings will be recorded and made available to all participants.
At any point, you’re not feeling too well to attend the in-person meeting you can simply log in at home and join live online.
- 22nd & 23rd June 2023
- Johannesburg, South Africa
- In-Person
- Virtual
Contact Us
- registration@peganix.com
- +2711 041 0181
- +2768 053 6221
DOWNLOAD BROCHURE NOW
