ELC 012 – Earthing Protection System
ELC 012 – Earthing Protection System
Objective
Who should attend?
CURRICULUM
Day One
- Recommended Earth Impedance Value
- Earth Equivalent Circuit Representation
- Soil Resistivity
- Types of Soil
- Moisture content
- Soil temperature
- Chemical Content.
- Installation of ground enhancement materials
- Measuring installed grounding systems.
- Maintenance of the grounding system
- Shape on Electrode Resistance
- Selection of a Material for an Earth Electrode
- Corrosion and Type of Soil
- Corrosion due to interconnection with another metallic item
- Other Considerations
- Design considerations
- Design procedure
- Equally spaced or Wenner Method
- Unequally-spaced or Shlumberger-Palmer Arrangement
- Interpretation of the Measurements
- Master Resistivity Curve
- Curve Matching Method
Day Two
- Fall of Potential Method
- Methodology
- Types of faults
- Symmetrical fault analysis
- Unsymmetrical fault analysis
- Fault current reduction
- Case studies
- Introduction to Protection
- Fault detection principles
- Basic components
- Creation and extinction of arc
- Types of circuit breakers: air, air-blast, oil, vacuum, SF6
- Rating, selection of CB
- Testing
- Auto-reclosing CB
- MCB
- Fuses: rewireable, cartridge, HRC
- Over current, earth fault, over load, differential, distance relays
- Buchholz, temperature sensitive relays
- Equipment protection
- Transformer
- Generator
- Transmission and distribution line
- Motor
- Digital Protection
- Computer/Microprocessor based protection algorithm for over current, differential, impedance relays