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This document aims at defining the features of VISA sound-proof containers intended for the installation of generating sets complete with any accessories (e.g. electrical panel, tank, etc.). Thanks to the structural features that make them particularly sturdy, the containers from the HD series represent the right choice for demanding applications that require frequent handling of the units and/or are located in particularly hostile climatic conditions.\nNB: These containers do not have the same structural specifications and certifications as transportation containers, such as: Rina and stackability tests (these two features must be agreed upon beforehand, when placing an order, and generate an extra cost in addition to that of the container itself).

Hi Tech containers represent the winning solution offered by VISA for all cases requiring a unit that is suitable for open air installation with noise levels that cannot be obtained with standard canopies, which is easily handled and offers contained overall dimensions and costs; these often opposing features can only be combined with an extremely flexible product, such as the Hi tech Visa container. Hi Tech containers are available in ISO standard 20, 25 and 30” sizes, they can house generating sets with powers up to 2000 kVA, and guarantee residual noise levels up to 65 ±3dB(A) at 7m.

The range of BELL canopies was developed by Visa technicians to satisfy the most demanding market demand in terms of sound reduction, with the specific aim of guaranteeing maximum performance with minimum economic impact. Choosing a BELL canopy is especially advantageous in all outdoor stationary installations that require a residual noise level of around 60 dBA@7m.

Visa wall-mounted sound insulating baffles represent the winning solution in terms of performance and low costs in all cases where the customer wishes to ensure low residual noise outside of the installation facilities. In fact, concrete or brick structures, by their very nature, offer high sound insulation; Visa baffles extend this feature to the required ventilation openings so as to minimise external noise pollution.

Star

With star the start of each of the three phases is connected together. Connections are taken from the ends of the three phases to give the three phases
Star symbol voltage

Delta

With Delta the starts and ends of the phases are connected. The end of phase 1 is connected to the start of phase 2, the end of phase 2 to the start of phase 3, and the end of phase 3 to the start of phase 1. Connections are taken from the three start-end points to give the three phases.
Delta symbol voltage
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