In many communications and computer installations, separate earthing systems are specified. There may be regulatory reasons for this, it may be necessary to minimise noise, or for security reasons in defence installations.
Under these conditions differences in earth potential are a major cause of equipment malfunction and damage.
Features of the Novaris Transient Earth Clamp:
Transient earthing products find application in computer room installations where signal ground and power ground must be separate; in process control where instrumentation ground and power ground are different; in communications systems where the telephone earth is separate from to the power earth; in defence installations where a separate secure "quiet" earth is required.
Insulated joints on gas pipelines can be protected from flashover by the installation of transient earthing products.
Under normal conditions the arrester appears as an open circuit with minimal capacitance so the two earthing systems are truly separate. Should a difference in potential exist between the two earthing systems, the arrester will fire, conduct current and effectively clamp the two earthing systems together.
After the impulse, the arrester will reset and return to its open circuit state. Lifetimes of 10,000 operations are possible if surge ratings are not exceeded.
Novaris | Global Solutions in Surge Protection
Novaris has designed and manufactured lightning and electrical disturbance protection systems since 1993. We specialise in the protection of power and data signalling. Our products are in use locally, nationally and internationally, and we are now world leaders in lightning and surge protection technology.
At our Australian headquarters we operate a full time research and development group, employing professional engineers, technical officers and drafting support staff. Our testing laboratory is capable of generating and measuring simulated lightning impulses in accordance with world power and telecommunications standards. We also have offices and distributors throughout Australia and worldwide.
We design, supply and provide advice on structural lightning protection and earthing systems for all structures in accordance with recognised world standards. Our products range from main switchboard and distribution board surge protection, PLC and control system protection, to RF coaxial cable and telecommunications protection.
Our quality, performance and reliability is second to none.