Electrical Transformer Basics Training

Course Duration: 2 Days

Course Description:
Electrical Transformer Basics Discusses how units are Used To Reduce voltage for: various day-to-day electrical applications. More than 50 million distribution transformers are electrical utility poles and Located on cement pads across the United States and Canada. Electrical Transformers serve the crucial function of transforming voltage potential to a Higher or lower values ​​to Meet the appliances and machinery voltage level energy requirements. Improper use, maintenance and neglect Cdn Heavy Losses due to Businesses as well as to the environment. Transform this electrical training course opérationnel safe launch of new basic and field diagnostics of transformers with the focus on safe operation, testing and maintaining of the distribution transformers and substations Normally installed in one pole.
Students learn Will Transform Electrical Basics - safe and proper Maintenance and testing procedures on power transformers. The race covers Transformers Used in Commercial and industrial power distribution systems, Including oil and dry-type units. Larger power transformers Used in utility applications are Covered aussi.
Who Should Attend:Field and shop technicians, field engineers, supervisors and others responsible for the testing and maintaining of power transformers rated 750kVA to 500MVA and 4.16kV to 500kV.
LEARNING OUTCOMESUpon completion of this course, the participant Should Be Able to:

    Understand the basic operation of a turn.
    Understand turns ratios and calculate terminal voltage and current.
    Understand terminal markings and: various single phase and Three phase wiring schemes. (Vs. DELTA WYE).
    Understand how to perform a polarity test is a potential convert.
    Understand the electrical testing methods are Performed Such transformers have insulation resistance testing, excitement and power factor testing.

    Understand the Various Tests Performed on Insulating oil.

COURSE OUTLINE:

Part 1

Participants Will Be Introduced to the different kinds of single phase transformers and Three building, various kinds of core material, windings layout, connections, tap changers, voltage classifications and turning applications.
1. Transformers kinds

    Single and Three Phase
    Power and distribution transformers
    Voltage (VT) and current transformers (CT's)
    Self-transforming
    Phase shifting
2. Voltage classes and applications and connections
3. Load taps changers (LTC's)

    Resistance and Reactance type
    Tap position indication
    Ratings and Selection Criteria
    LTC with power factor correcting capacitor
4. Connections

    Polarity and angular displacement
    Y - Y, Δ - Δ, Y - Δ and Δ - Y connections
    Interconnected Y and grounding
    Phase shifting
    3phase to 6 phase connection
5. Temperature monitoring and cooling methods and accessories
6. Paralleling transformers

Part 2

This hand Introduce The Fundamental theory behind the voltage and current transformation, winding resistance and impedance calculation, voltage regulation, Losses and output efficiency estimation for power and distribution transformers Both.
1. Name plate rating - Vs Volt Amp Watt
2. Transform testing

    Class and sequence
    Turns ratio
    Polarity
    Insulation and impulse
    Control Devices
3. Performance tests

    No load and excitation
    Load Losses and impedance measurement
    Winding resistance and short circuit test
    Heat run test
    Winding resistance and impedance calculation
4.Performance Characteristics, loading, regulation and efficiency

    Transform Requirements loading

Part 3

Such issues as the effect of saturation, harmonics and power electronic devices turn on the Performance Will Be Addressed aussi. Day 1 will wrap up by showing how to select for Transformers: various kinds of measurement and power conversion Including the de-rating ratio calculation.
1. Magnetizing, inrush and over excitation
2. Transformers for drives and harmonics influences on performance

    Secondary current distortion due to loading semiconductor devices
    Total harmonic distortion
    Reactors and Filters
3. Transform-rating and what K-means clustering ratings
4. Standards and findings a day

DAY TWO

1. Installation, Testing and Maintenance

    Standards for Transformers
    Installation & Relocation
    Transforming Type Tests
    Transform Routine Tests
    Transforming Commissioning Tests
    Transforming Maintenance: Concepts of Preventive & Maintenance provided based
    Case studies
    Discussion
2. Installation and operation safety

    Connections and Vector groups
    Procedures Relating to turn Safe operation in a utility or industry environment
    Thermal Performance and Loading of Transformers
    Practical solutions for operating and Maintaining power transformers
    Voltage Adjustment using Off-Load On-Load Tap & Changing
    HV Earthing of Transformers
3. Transforming failure statistics

    Transform failure modes
    Lightening
    Internal Faults
    External Faults
    Insulation Damage
    Component Failures
    Transforming failure statistics
    How to categorize failure modes transform
4. Protection methods

    Oil Temperature Alarm and Trip
    Winding Temperature Alarm and Trip
    Buchholz relay, Oil Surge Pressure relief relay & relay
    Surge Protection
    Fuse protection
    Protective relaying? V Overcurrent, Earth fault, Differential & Overflux
5. Online monitoring

    Oil Quality Analysis
    Dissolved Gas Analysis
    Furan Compound Analysis
    Partial Discharge Monitoring? V Acoustic & Electrical
    Interpretation of test results
6. General diagnosis and assessment test

    Insulation Resistance and Polarization Index
    Turns Ratio and Excitation Current
    Capacitance and Power Factor
    Winding Resistance
    Recovery Voltage Measurement
    Frequency Response Analysis
    Interpretation of test results
7. Tap changers inspection and test

    Tap Change Types? V Circuit & Load Off
    Off Circuit Tap Switch Maintenance & Repairs
    Load Tap Changer (LTC) Failure modes
    LTC Oil Analysis
    LTC Temperature Analysis
    LTC Vibration Acoustic Signature Analysis
    Motor Current Signature Analysis LTC
    LTC Maintenance & Repairs
8. Transforming testing accessories

    Power factor testing of bushings
    Electrical Insulation & other Tests of HVCTs
    Periodic inspection and testing of Neutral Earthing Resistor
    Analysis of testing data
    Routine inspection of cooling fans and pumps, gauges & breather
9. Remaining life assessment

    Degree of Polymerization (DP) testing
    Relationship Between DP and Furan concentration
    Remaining Life Assessment Models based on opérationnel history, Dissolved gas and furan concentrations

Click here to see :Electrical Transformer Basics Training