Transient Voltage Surge Suppressors, known as SPD (Surge Protective Device) provide a basic level of cost effective power protection to entire distribution systems or zones, rather than individual pieces of equipment. They bridge the gap between the performance of ordinary commercial class surge and lightning arresters filters or power conditioners. In using the PSI “Instapowerbloc” 2 stage Transient Voltage Surge Suppressors, it is possible to prevent the majority of failures of electronic equipment at a fraction of the usual cost of power protection by diverting surge energy away from the critical load equipment. The traditional approach to protection of electronic equipment has been to apply measures solely to data processing instillations, e.g. the traditional ‘computer room’. With modern networked computing and the spread of electronics into almost every aspect of the modern office and industrial building, the need for protection has become wider. This includes heating and lighting, fire detection and control, building management systems, access, control, telecommunications etc. Correctly located and installed, Power Systems International Transient Voltage Surge Suppressors provide primary protection from damage to all these simultaneously, and at a realistic cost.

Transient voltage surge protection devices divert the surge current back to its source, so preventing the surge voltage reaching a dangerous level. Filters, Conditioners and UPS, on the other hand, work by ‘blocking’ the surge voltage and preventing current flow. With large surges, such as those caused by lightning (which can reach almost any value voltage), ‘blocking’ type products are likely to break down, while surge diverters act as an electrical ‘pressure relief valve’, Power Systems InternationalTransient Voltage Surge Suppressors and lightning diverters compliment other protection systems.

TVSS devices are connected in parallel with the mains incoming supply, and so are not dependant on the current rating of the instillation or the load. Selection of the current rating is achieved according to the surge exposure level at the particular location (refer to Power Systems International technical department for a separate guide). Installation is also easy, with no re-routing of major cables. This makes them ideal for retro fitting into existing systems as a performance upgrade, as well as for new installations.

The optimum location for Power Systems International surge protective devices, to protect from externally generated transients, such as lightning, is at the origin of the installation, preferably the main entrance to the building mains distribution board). To protect against locally generated transients, TVSS devices can also be fitted to distribution panels and at known transient noise generated sources, such as the switchgear for large motors.

Correct implementation of TVSS devices will afford lightning protection of the electrical services for buildings, in accordance with the requirements of BS6651: 1992. Power Systems International Transient Voltage Surge Suppressors meet and exceed the lightning surge specification of the EU, and other countries.

Whilst BS6651 describes the electrical transient environment, it is not a product standard and does not address performance or safety requirements for suppressors. There are presently no IEC standards adequately covering all aspects of these devices. The Power Systems International Transient Voltage Surge Suppressors meet the lightning requirement of the American Underwriters Laboratories criteria (UL 1449), which gives verification of the important issues of performance, safety, construction and mechanical strength, temperature rise, flammability, dielectric breakdown, over voltage tolerance, surge follow through current, life expectancy, reliability manufacturing and production line testing.

All PSI Transient Voltage Surge Suppressors carry a five-year warranty. Comprehensive instructions for installation, operation and maintenance are supplied with the products.