Course Content
EARTHING AND GROUNDING SYSTEM
Earthing, also known as grounding, is a critical safety practice in electrical systems. It involves creating a direct electrical connection between the electrical system and the earth to ensure safety, protect equipment, and maintain system stability.
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Purpose of Earthing and Grounding
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Earthing vs. Grounding
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Earthing
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HYBRID DIESEL SYSTEMS
Hybrid diesel systems combine the benefits of diesel engines with electric propulsion systems to create a more efficient, environmentally friendly, and flexible powertrain. These systems are commonly used in various applications, including automotive, marine, and industrial sectors.
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Components of a Hybrid Diesel System
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Types of Hybrid Diesel Systems
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Advantages of Hybrid Diesel Systems
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Applications of Hybrid Diesel Systems
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DIESEL TECHNOLOGY
Diesel technology involves the use of diesel engines, which are internal combustion engines that operate using diesel fuel. Diesel engines are known for their durability, fuel efficiency, and high torque, making them suitable for a wide range of applications, from automobiles and trucks to industrial machinery and generators.
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Key Aspects of Diesel Technology
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Applications
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Engine Efficiency and Performance Enhancements
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MECHANICAL DESIGN
Mechanical design is a critical field of engineering that focuses on creating and analyzing mechanical systems and components to ensure they meet specific performance, reliability, and safety requirements. It encompasses a broad range of activities, from conceptual design to detailed engineering and manufacturing.
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Core Concepts of Mechanical Design
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Mechanical Design Elements
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PROFESSIONAL TRAINING OF OPERATION AND MAINTENANCE OF DIESEL POWER PLANTS
About Lesson

Earthing and Grounding

  1. Safety: Prevents electric shocks by providing a safe path for fault currents to flow into the ground, reducing the risk of electric shock to people.
  2. Equipment Protection: Protects electrical equipment from damage caused by fault currents, surges, and lightning strikes.
  3. System Stability: Ensures proper functioning of the electrical system by maintaining a reference point for voltage levels.

Key Concepts in Earthing and Grounding:

  1. Earthing (or Grounding) Systems:

    • System Earthing: Involves connecting parts of the electrical system to the earth to stabilize voltage and ensure safety. Common systems include:
      • TN (Terra Neutral) Systems: Where the neutral point of the supply transformer is directly connected to earth.
      • TT (Terra-Terra) Systems: Where the neutral is earthed at the supply transformer, and the exposed conductive parts are earthed independently.
      • IT (Isolated Terra) Systems: Where the system is not directly connected to earth but is monitored for insulation resistance.

  2. Earthing Electrode:

    • Types of Electrodes: Includes ground rods, plates, or meshes buried in the earth to establish an electrical connection.
    • Materials: Typically made of copper or galvanized steel for corrosion resistance and good conductivity.

  3. Grounding Conductors:

    • Purpose: Carry fault currents from electrical systems to the earth.
    • Types: Include grounding wires, conductors, and bonding straps.
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