الدورة الثامنة

Grounding Systems

و تتضمن

1)General
-Introducti**
-Electrodes and C**ductors
-Safety C**cepts

2) Soil Characteristics
-Soil as a c**ductor. Resistivity
-Uniform Soil
-several Layers Mode
-Artificial Soil
-Soil Treatment

3) Geometry of the Grounding Systems
-Resistive to Ground
-Separati** of the Grid C**ductors

4)Analysis of Current Circulati**
-Fault Current and Ground Current
-Different Case of Circulati**
-Extracted Currents
-Adjustment Factor .Reducti** Factor

5) Calculati** of Step and Touch Voltages
-Effects of the Current ** the human body
-Equivalent Circuits
-Limit Admissible Voltages
-Estimati** of the Voltages in the Installati**

6) C**structi** and Installati** Aspects
-Introducti**
Sizing of the Grounding C**ductors
-Corrosi**
-****ts and Weldings
-Low Voltage Installati**s






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اللهم اغفر لابي واختي يارب العالمين
اسالكم الدعاء