SA Lightning Protection – PRODUCTS & SERVICES

Products and Services.

  • Manufacture and installation of Lightning Conductor masts from 10m to 30m in length.
  • Installation of Industrial strip conductors.
  • Installation of earth terminals SABS standard.
  • Consultation and Design on earthing systems.
  • Inspection and testing of existing systems on behalf of insurance houses.
  • Issuing Certificate of Compliance for insurance purposes.
  • Repair and maintenance of earthing systems.
  • Solar Pannel Protection.
  • SA Lightning are specialist in the protection against Lightning damage to Solar System.
  • We design and install purpose made Lightning Protection Systems to your unique design and setup.

Production Capacity.

  • No matter how big the job, we have the technology, expertise and capacity to deliver.
  • Lead time is no greater than 5 working days.

Lightning Rod / Conductor

A lightning rod or lightning conductor may be a metal rod mounted on a structure and meant to shield the structure from a lightning strike. If lightning hits the structure, it’ll preferentially strike the rod and be conducted to ground through a wire, rather than passing through the structure, wherever it may begin a fire or cause electrocution. Lightning rods are referred to as finials, air terminals or strike termination devices.

In a lightning protection system, a lightning rod may be a single part of the system. The lightning rod needs a connection to earth to perform its protecting function. Lightning rods are available in many alternative forms, together with hollow, solid, pointed, rounded, flat strips or perhaps bristle brush-like. The main attribute common to all or any lightning rods is that they’re all manufactured from conductive materials, like copper and aluminium. Copper and its alloys are the foremost common materials used in lightning protection.

Lightning protection system

A lightning protection system is intended to shield a structure from damage as a result of lightning strikes by intercepting such strikes and safely passing their very high currents to ground. A lightning protection system includes a network of air terminals, bonding conductors, and ground electrodes designed to supply a low electric resistance path to ground for potential strikes.

Lightning protection systems are used to stop or reduce lightning strike damage to structures. Lightning protection systems mitigate the fire hazard that lightning strikes create to structures. A lightning protection system provides a low-impedance path for the lightning current to reduce the heating result of current flowing through flammable structural materials. If lightning travels through porous and water-saturated materials, these materials could literally explode. If their water content is flashed to steam by heat created from the high current. This is often why trees are often shattered by lightning strikes.

Because of the high energy and current levels related to lightning (currents will be in far more than 150,000 amps), and therefore the very fast rise time of a lightning strike, no protection system will guarantee absolute safety from lightning. Lightning current will divide to follow each conductive path to ground, and even the divided current will cause damage. Secondary “side-flashes” are often enough to ignite a fire, blow apart brick, stone, or concrete, or injure occupants inside a structure or building. However, the advantages of basic lightning protection systems are evident for more than a century.

Laboratory-scale measurements of the consequences of [any lightning investigation research] don’t scale to applications involving natural lightning. Field applications have primarily been derived from trial and error based on the best-intended laboratory analysis of an extremely complicated and variable phenomenon.

The components of a lightning protection system are air terminals (lightning rods or strike termination devices), bonding conductors, ground terminals (ground or “earthing” rods, plates, or mesh), and every one of the connectors and support to complete the system. The air terminals are usually organized at or along the higher points of a roof structure, and are electrically secured together by bonding conductors (called “down conductors” or “downleads”), that are connected by the most direct route to at least one or a lot of grounding or earthing terminals. Connections to earth electrodes should not solely have low resistance however should have low self-inductance.

Lightning arrester

Lightning rod on a sculpture on the highest of a roof in telegraphy and telecommunication, a surge protector is placed wherever wires enter a structure, preventing damage to electronic instruments inside and guaranteeing the protection of people close to them. Lightning arresters, additionally referred to as surge protectors, are devices that are connected between every electrical conductor during a power or communications system, and also the Earth. They stop the flow of the conventional power or signal currents to ground, however offer a path over which high-voltage lightning current flows, bypassing the connected instrumentation. Their purpose is to limit the increase in voltage when a communications or power cable is affected by lightning or is close to a lightning strike.

Early streamer emission

Early streamer emission (ESE) air terminals are especially effective for lightning protection of industrial sites, homes administrative or public buildings, monuments and open-air sites such as sports grounds.

During a storm, when propagation field conditions are favourable, an ESE air terminal will generate an upward leader. This upward leader from the tip propagates towards the downward leader from the cloud at an average speed of 1 m/µs.

This emission of an early streamer to a lightning event delivers a beneficial triggering time compared to a single rod air terminal exposed to the same conditions. The beneficial triggering time is determined as the average time gained at the moment of spark over, with efficiency confirmed by high-voltage laboratory testing.