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Comfort zone for hot converters

Comfort zone for hot converters

Over the last few years, Rittal’s LCP Rack Industry system has proved highly effective in its ability to cool power electronics in switchgear. Rittal has now developed a new generation of these air/water heat exchangers with numerous improvements and advantages, aimed at improving its performance for control and switchgear manufacturers, as well as users of the machinery and equipment.

Rittal’s Liquid Cooling Package (LCP) Rack Industry is a system which has proved highly effective at providing climate control for whole suites of enclosures. If an air/water heat exchanger is installed in the centre of a bayed enclosure suite, then the resultant cooling air can be blown towards both sides in the enclosure. Cooling outputs of up to 10kW means that even the most demanding climate control requirements can be met, such as those of cooling frequency converters. The 30cm wide climate control enclosure can also be easily integrated into the Rittal TS 8 baying system. 

A new, improved LCP Rack Industry system now features recesses to allow the routing of busbar systems and cables. “It means that we are meeting the requirements of our customers, who want to use LCP cooling systems in bayed enclosures, along with continuous busbar systems”, says Christian Westwood, Rittal’s climate control product manager. 

There is space for introducing the busbar system at the top of the climate control enclosure while, below that, there is room for the N/PE rails. Additional cabling can be added-in in both positions, which makes the LCP Rack Industry extremely flexible. All this delivers high performance cooling, notably in large switchgear units with full-length busbar systems. Placing an enclosure on both sides of the heat exchanger enclosure doubles the impact of the system, enabling the cooling of two enclosures.

The energy efficiency of the new LCP Rack Industry is also now significantly higher. The improved system uses EC fans that consume roughly half as much energy as the previous model, to reduce running costs. In addition, the fan’s optional speed control means that the noise level can be reduced in sensitive areas. 

Rittal has also looked at the climate control needs of the food and pharmaceutical sectors within enclosures, and with its new, hygienic design, air/water heat exchangers, Rittal is offering a standardised solution for efficient enclosure climate control in applications where hygiene is critical. Thanks to their IP69K protection category, the units are suitable for use in industries such as food and pharmaceuticals which use high-pressure cleaning systems.

High levels of hygiene are, of course, essential in food and pharmaceuticals production plants and it is no surprise, therefore, that the systems and components which are used within these hygiene-critical areas must meet exacting requirements. 

The latest addition to Rittal’s enclosure climate control range is an air/water heat exchanger specifically for use in this type of environment. This wall-mounted heat exchanger has a number of critical features, including a roof pitch of 30 degrees, which makes it impossible for objects to be placed on top of it and of course, the pitch means liquids quickly run off the top. Furthermore, the external gasket is made of silicone and meets the FDA 21 CFR 177.2600 Guideline, preventing contamination between the housing of the air/water heat exchanger and the enclosure itself. 

The heat exchanger features a housing made of stainless steel (Euronorm 1.4301) which is brushed on the outside (grain size 400) and has a surface roughness under 0.8µm, making it easy to clean. The housing is also rated as IP69K (DIN 40050-9) to withstand high-pressure cleaners and daily cleaning with a steam cleaner. They can be installed as wall-mounted units on the side, rear panel, or door of an enclosure. Two versions of the unit are available, offering the option of cooling outputs of either 700 watts or 1,300 watts.

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