What is Plate Earthing? Types and Procedure

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Plate earthing is a popular method used for grounding electrical systems to ensure safety and prevent damage. In this blog, we will explore what plate earthing is, the types of plate earthing, and the procedure involved in the installation of a plate earthing system.

Relevant Standards Followed for Earthing System

The Institute of Electrical and Electronics Engineers (IEEE) has established standards for earthing systems. These standards help to ensure the safety of people and equipment by providing guidelines for earthing system design, installation, and testing. The most commonly followed standard for chemical earthing system is IEEE Std 80-2013.

Plate Earthing Proceedings

Plate earthing is a type of electrical earthing in which a metal plate is buried in the ground and connected to the electrical system. The plate used for earthing is typically made of copper, steel, or galvanized iron. The size of the plate depends on the type of soil, current to be grounded, and other factors. A plate earthing system can be installed for both low voltage and high voltage applications.

The procedure for installing a plate earthing system involves the following steps:

Step 1: Site Selection and Preparation

The first step in plate earthing installation is to select a suitable location for the plate. The location must be away from water sources, pipes, and other underground utilities. The soil must also be tested for its resistivity, which will determine the size of the plate needed. Once the location is selected, the ground is dug to a depth of about 3-4 feet.

Step 2: Plate Installation

The plate is then placed in the pit and connected to the earth electrode with a copper conductor. The plate must be connected to the electrical system using a copper conductor and must be buried vertically in the pit. The plate must be covered with soil to prevent it from coming into contact with water and other elements.

Step 3: Connection to the Electrical System

The plate is then connected to the electrical system with a copper conductor. The connection must be made using a suitable connector and must be done in a safe and secure manner. The copper conductor used for connecting the plate to the electrical system must be of the required size to handle the current and voltage.

Step 4: Testing

The earthing system is then tested for its effectiveness. The earth resistance is measured using an earth resistance tester. The resistance should be within the recommended values, as per IEEE Std 80-2013.

Types of Plate Earthing

There are two types of plate earthing:

  • Pipe Earthing

In pipe earthing, a hollow GI pipe is used instead of a plate. The pipe is buried vertically in the ground, and the electrical system is connected to it using a copper conductor.

  • Plate Earthing

In plate earthing, a metal plate is used instead of a pipe. The plate is buried in the ground, and the electrical system is connected to it using a copper conductor.

What is Earth Resistance? How to Measure It?

Earth resistance is the resistance offered by the earth electrode to the flow of electric current. The lower the earth resistance, the better the earthing system’s performance. The earth resistance can be measured using an earth resistance tester.

The earth resistance tester works by passing a small AC current through the earth electrode and measuring the voltage drop. The resistance is calculated using Ohm’s law.

Single Line Diagram for Substation 

A single-line diagram is a diagram that shows the complete electrical system of a substation in a simplified form. It shows the electrical connections between various components of the substation, including transformers, circuit breakers, and other devices. It also shows the electrical power flow in the substation.

The single-line diagram is an important tool for substation design, operation, and maintenance.  It provides a clear and concise representation of the substation’s electrical system and helps identify potential issues or areas for improvement.

Equipotential Bonding – Everything You Need To Know!

Equipotential bonding is the process of connecting all metal objects within a building or structure to a common electrical potential. This is done to prevent potential differences from occurring between the metal objects and to reduce the risk of electric shock or fire. Equipotential bonding is an essential part of any earthing system.

Equipotential bonding is achieved by connecting all metal objects to the earth electrode using a suitable conductor. The conductor must be of the correct size and material to handle the current and voltage. Equipotential bonding is required for all electrical systems, including low voltage and high voltage systems.

Conclusions:

Plate earthing is a crucial component in any earthing system. It is a popular method used for grounding electrical systems to ensure safety and prevent damage. The installation of a plate earthing system involves several steps, including site selection, plate installation, connection to the electrical system, and testing.

There are two types of plate earthing: pipe earthing and plate earthing. Earth resistance is an essential factor to consider when installing a plate earthing system. The earth resistance can be measured using an earth resistance tester.

The single-line diagram is an important tool for substation design, operation, and maintenance. It provides a clear and concise representation of the substation’s electrical system and helps identify potential issues or areas for improvement.

Equipotential bonding is an essential part of any earthing system. It helps prevent potential differences from occurring between metal objects and reduces the risk of electric shock or fire. By following the relevant standards and procedures, you can ensure the safety of people and equipment and prevent damage caused by electrical faults. 

At Ennob Infraa Solution, we ensure that our products are tested in accordance with major international standards, including IEC, BS EN, UNE, and UL & IS. Additionally, we offer design solutions that incorporate our proprietary risk assessment software, which fully complies with IEC 62305-2.