The wadding broad highway is a federal highway host skeleton line Erenhot's to river mouth road Sichuan within the boundaries of section which the Ministry of Communications plans, the span 135.5 kilometers, the design speed 80 kilometers, bidirectional 4 traffic lanes. Because the northern Sichuan province area belongs to the mountainous area, therefore has very many road sections in the wadding broad high speed road all is the tunnel, in the tunnel power equipment choice, considered the terrain as well as the climatic factor are higher to the power equipment request, this project especially chose to reach H series three-phase machine UPS, guaranteed the electric power supply the stability.

Took repeatedly was selected in the domestic various professions market a section product, reaches H series UPS already to know very well for the professional, its broad input voltage scope, compared obviously a lower weight with the same level power product until now still to be at the leading position in the UPS profession. In the actual use process, the project constructor practical feeling had realized reaches H series power input high performance superiority. The familiar UPS people all knew that, including the very many well-known brands UPS mostly power input all about 0.8, can achieve is higher than 0.9 to be allowed to say very few, but power input Gao Hui did not harm in the electrical network in the certain degree other equipment, amounts to H series to use the IGBT high frequency power factor adjustment technology which was in sole possession of, enabled the power input factor to achieve above 0.95, maximum limit reduced to the electric power environment pollution, has protected in the electrical network other essential equipment.

In addition, the economic type is one of H series practical application value higher functions, the general on-line UPS entire machine efficiency can achieve about 90%, but the economic type which amounts to H series to be in sole possession of may automatically detect knows the city electricity the supply condition, and in city electricity condition good time automatic cut over bypass, because this time city electricity does not need to flow after many electric appliances original parts, the entire machine efficiency may reach above 97%, 粗算 gets down, may save 10% about the electrical bill. But when UPS measured knows when the city electricity is unstable, it may in 8 milliseconds time recut the inversion power supply, this was cutting down on expenditures has simultaneously guaranteed the overall system security. Time competes in the sign process in this, the actual performance displays into the key aspect which reaches UPS finally to win.

2002 our country UPS market overall presents glides down the situation, the very many well-known brands sales volume obviously is lower than previous two years, reaches the UPS dependence product performance aspect the superiority, not only maintained the tendency which successive years grew, in the finance, the telecommunication, the negotiable securities and so on the key profession also again and again was selected, displays the counter potential advance the good tendency, this time in transportation profession being selected, symbolized reached UPS unceasingly to develop the profession market in the advancement to step out to be solid step.