PRIMARY EARTHING:
• The primary earthing is basically related to the civil work. MV clamps
are used to tighten the reinforcement steel bars together to ensure a good
connection between the reinforcements and the embedded earthing outlets.
All underground earthing network, ring conductors, interconnection among
buildings, earth pits etc. is included in the primary earthing system
• Engineering of primary earthing system typically consist of:
• Principle - earthing system in substation and process buildings
• Guidance for fitting of MV clamps to reinforcement steel bars
• Guidance for location and fitting of earthing outlets
• Earth pits and earth electrodes
• Interconnection earthing network
• Foundation earthing