Equipment earthing ensures all non-current-carrying metallic parts of electrical equipment are bonded to the ground system for personnel safety and fault protection.

Purpose

• •Prevents dangerous touch voltages
• •Provides fault current return path
• •Enables protective device operation
• •Reduces electromagnetic interference

Connection Methods

• •Direct bolted connections with lugs
• •Braided flexible connectors for vibrating equipment
• •Exothermic welding for permanent bonds

Standards

• •IEEE 80 for substation grounding
• •IEC 60364 for electrical installations
• •IS 3043 for earthing practice