Tag: Electrical Safety

Single Line Diagram

Single Line Diagram for Substation – Detailed Explanation

What is a Single Line Diagram? A single line diagram also called the one-line diagram is a symbolic or graphical representation of a three-phase power system. It has a diagrammatic representation of all the equipment and connections. The electrical elements such as circuit breakers, transformers, bus bars, and conductors, are …

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What are surge arresters

Surge Arrester – How does it protect from Voltage Surge?

Surge arresters are protective devices for safeguarding a piece of equipment from over-voltage transients by discharging or bypassing the surge current. It provides a low resistance path to the surge current protecting the system. The surge current can occur usually due to various reasons, like lightning or internal switching events. In …

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Cable Glands Size Chart

Cable Glands Size Chart – Explanation for Gland Selection

Fasteners are hardware components like screws, nuts and bolts that mechanically join two or more objects together. Fasteners are used to create non-permanent joints, that can be dismantled without damaging the joining objects. Unlike fasteners; welding, crimping, soldering are examples of creating permanent joints where the connected objects cannot be …

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Fasteners

Fasteners – Types and Features

Fasteners are hardware components like screws, nuts and bolts that mechanically join two or more objects together. Fasteners are used to create non-permanent joints, that can be dismantled without damaging the joining objects. Unlike fasteners; welding, crimping, soldering are examples of creating permanent joints where the connected objects cannot be …

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Lugs – Types, Applications and Features

Lugs – Types, Applications and Features

Scope of Electrical Lugs A cable lug also known as a cable terminal is a component of an electrical device that connects the cable to the device terminals. It  simplifies the assembly of personnel, maintenance, and repair processes. A cable lug or connector is used when a permanent connection is …

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Ground Potential Rise

Ground Potential Rise Study

Scope: The result of a ground electrode impedance, referenced to remote earth, and the current that flows through that electrode impedance is known as Ground Potential Rise or Earth Potential Rise (as specified in IEEE Standard 367). The maximum electrical potential that a (substation) grounding grid can achieve relative to …

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Step & Touch Potential

What are Touch and Step Potential Requirements?

To grasp the concept of step and touch potential as per IEC 62305-3 (EN 62305-3) How energy dissipates over conductive objects. Some good conductors exist that provide a path to the ground during broken pole or downed wire conditions, such as metal fences, damp soil, and puddles. Other conductors, such …

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Essentials of Neutral Grounding System

Objective: Indian Standard IS: 3043 – 2018 [Code of Practice for Earthing – Second Revision] says the following: Earthing refers to the complications which arise when electricity conducts via the ground. The terms earth and earthing here are used whether (or not) the earth is employed as a low impedance …

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SS Earth Rods

Importance of Stainless Steel Earth Rods

Scope: Earth rods constructed of austenitic stainless steel according to British specifications. Stainless steel rods are comparable to copper rods; however, they are more anodic than copper and can be used when galvanic corrosion is a concern. The current carrying capacity of stainless-steel rods is lesser as compared to copper. …

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TT Earthing Sytem

What is TT Earthing System? Detailed Explanation

Scope   Over the last century, electrical safety standards have evolved into very sophisticated systems that encompass all components of a safe installation, including TT Earthing Systems and other types in the category. In Low-voltage (LV) Electrical Installations, the reference standard IEC 60364 is used to determine the actions to …

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