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EARTHING CONCEPTS
Earthing in a EHV Substation ,[object Object],[object Object],[object Object],[object Object]
Earthing in a EHV Substation ,[object Object],[object Object],[object Object],[object Object]
Earthing in a EHV Substation  I.E.Rules 1956 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing in a EHV Substation  I.E.Rules 1956 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing System ,[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing System Points to be earthed-cont’d ,[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing and grounding -distinction  ,[object Object],[object Object],[object Object],[object Object]
Earthing and grounding -distinction ,[object Object],[object Object],[object Object],[object Object]
Basics of Earthing Resistivity of earth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Electric field – Earth resistance ,[object Object],[object Object],[object Object],[object Object],[object Object]
Electric field – Earth resistance ,[object Object],[object Object],[object Object]
Substation earthing Design of Earth mat ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation earthing Design of Earth mat ,[object Object],[object Object],[object Object],[object Object],[object Object]
Earth mat parameters Let go current ,[object Object],[object Object],[object Object],[object Object]
Substation Earthing  Non-fibrillation current ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing  Non fibrillation current– contd ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing  Fault duration and magnitude ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing   Fault duration and magnitude-contd. ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],Substation Earthing   Fault duration and magnitude-contd.
Substation Earthing   Soil resistivity  ,[object Object],[object Object],[object Object]
Substation Earthing   Soil resistivity ,[object Object],[object Object],[object Object],[object Object]
Substation Earthing-  Soil resistivity     Weiner's 4 electrode method ,[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing   Soil resistivity ,[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing   Soil resistivity ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing Measurement of  Soil resistivity ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Resistance of the earthing system ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing System Permissible resistance of earthing system   ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing  Step and touch potential ,[object Object],[object Object],[object Object]
Substation Earthing  Step and touch potential-contd ,[object Object],[object Object],[object Object]
Substation Earthing  Step and touch potential- contd. ,[object Object],[object Object],[object Object],[object Object]
Substation Earthing  Step and touch potential ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing  Step and touch potential-contd. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing  Step and touch potential-contd. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Earthing System Size of earth mat conductor
Earthing materials ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing materials ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing materials  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Pipe earthing ,[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing ,[object Object],[object Object],[object Object],[object Object]
Earthing system   Lowering of earth impedance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing System Earthing of switch yard fencing  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing System Earthing of switch yard fencing- con… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing System Earthing of switch yard fencing- con… ,[object Object],[object Object],[object Object],[object Object],[object Object]
Earthing of gas insulated substation ,[object Object],[object Object],[object Object],[object Object]
Earthing of gas insulated substation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Substation Earthing Case studies ,[object Object],[object Object],[object Object]
[object Object]

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Earthing Concepts

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