Earthing and Lightning Protection Sample Clauses

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Earthing and Lightning Protection. The Contractor to design, install, test and commission the earthing and lightning protection system such that the system satisfies the requirements below - • To limit the touch potentials on structures and equipment and to provide a low impedance return path to limit the damage to equipment by fault currents, during normal or abnormal system conditions. • The installation is protected from lightning by conducting the strike through a preferred path to earth. • All non-current carrying metal parts of the installation is earthed. This comprises earthing of metal conduits, metal cable racks, cable armouring, junction boxes, panels, motor frames, switchgear enclosures and metal enclosures for motor controllers, frames, metal enclosures for various electrical equipment, electrically operated equipment, main support structures, reinforcing etc. • Provide earth fault current path that enables the electrical protection to prevent or, mitigate plant damage; • Protect plant and people against the effects of lightning; • Protect electrical components against incoming surges; • Provide a path for the dissipation of electrostatic discharge; and • To provide a reference point for electrical signals The Contractor to comply to the following standards for all earthing and lightning protection- • Earthing and Lightning Protection Standard (240-56356396) • Protection against lightning - Physical damage to structures and life hazard (SANS 10313) • Earthing of low-voltage (LV) distribution systems (SANS 10292) • The wiring of Premises (SANS 10142-1). • The installation shall be earthed in accordance with the requirements 0.54/393. • SANS 10198-3, The selection, handling and installation of electric power cables of rating not exceeding 33kV Part 3: Earthing systems - general provisions, South African National Standards, Pretoria. • SANS 10198-12, Edition 1, the selection, handling and installation of electric power cables of rating not exceeding 33kV Part 12: Installation of earthing system, South African National Standards, Pretoria. • IEEE 665, IEEE 80 and IEEE 81.
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Earthing and Lightning Protection. The objective is to limit the touch potentials on structures and equipment and to provide low impedance return path to limit the damage to equipment by fault currents, during normal or abnormal system conditions. Also, is to protect the installations from lightning strikes by conducting the strike through a preferred path to earth. Earthing and lightning protection is done in accordance to 240 – 56356396 – Earthing and Lightning Standard.
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Earthing and Lightning Protection 
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