Furse Earthing & lightning protection

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Vydal: ABB s.r.o.

Strana 70 z 132

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They can also provide protection potentially dangerous places, e. 5.g. All Furse mechanical clamps are manufactured from high copper content alloy. Compression connectors produce very robust joints which can buried the ground concrete.— Earthing Product selection guide An effective earthing system fundamental requirement any modern structure or system for operational and/or safety reasons. range conductor materials is available. 70 FURSE® EARTHING LIGHTNING PROTECTION QUALIT SOLUTIONS FOR SAFEGUARDING PEOPLE, STRUCTURES AND SERVICES . In addition the conductors, earth rods and plates any combination thereof can be used achieve effective earth depending on the site conditions. The correct choice of conductor extremely important, whether it simple below ground electrode a complex computer room signal reference grid. offer range of connectors and termination methods suit a wide range applications: 4. Earth rods Earth rods take advantage lower resistivity soils greater depths than normal excavation will allow. Earthing systems typically fall into (but are not limited to) one the following categories: • Power generation, transmission and distribution • Lightning protection • Control undesirable static electricity • Telecommunications – Conductors and earth electrodes As with lightning protection, the first choice faced the designer earthing system the type conductor used. They have high mechanical strength, excellent corrosion resistance and conductivity. 3. Poorly chosen badly installed joints and connectors can compromise the safe operation of earthing system. Compression connectors For applications where exothermic welding not appropriate for creating permanent connections, compression connectors may used. Above ground, copper, aluminium and steel may used. Mechanical clamps Where permanent connections are not appropriate, mechanical clamps offer the ideal solution. Earth plates Earth plates are used attain effective earth in shallow soils with underlying rocks in locations with large amounts buried services. Inspection pits allow easy access earth electrodes and conductors to facilitate this procedure. 2. 1. Conductors We offer three types conductor: • Flat tape • Solid circular • Stranded cable It important that earthing conductors should be correctly sized for their application, they may be required carry considerable current for several seconds. These are typically used smaller scale installations where periodic disconnection for testing required. switching positions. 6. Below ground, copper the most common choice due its high resistance to corrosion. – Connectors and terminations An effective earthing system relies joints and connections have good electrical conductivity with high mechanical strength. Without such system, the safety a structure, the equipment contained within and its occupants are compromised. Earth inspection pits Regular inspection and testing the earthing system essential