EARTHING DESIGN


Grounding System

• Ungrounded
• Solidly Grounded
• Low Impedance Grounded (Low Z)
• High Impedance Grounded (High Z)

Earthing Type

• TN-C
• TN-C-S
• TN-S
• TT
• NEC


• Open | Neautral is not connected to ground (ungrounded).
• Solid | Solidly grounded, no intentional impedance in the neutral grounding path.
• Resistor | A resistor is used in the neautral grounding path.
• Reactor | A reactor is used in the neautral grounding path.
• Xfmr Reactor | A Transformer is used in the neutral grounding path with a reactor in the secondary of the transformer.
• Xfmr Resistor | A Transformer is used in the neutral grounding path with a resistor in the secondary of the transformer.




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