Rittal expands Blue e+ cooling unit generation.
Rittal Blue e+ cooling units are currently the most efficient of their kind on the market. The manufacturer is now expanding its range of cooling units with the addition of a device with an output class of 1.6 kW. Besides being 75 percent more energy-efficient than previous cooling solutions on average, the units also excel in terms of connectivity, safety and handling. The new FTTA approval also makes the UL certification process much easier. Blue e+ cooling units with the new output classes are available now.
The Blue e+ cooling unit series from Rittal has offered an output range of 2 to 6 kW. But now, the company will launch compact units in a lower output class – at 1.6 kW. “This advancement enables us to add an important milestone to our Blue e+ cooling unit range and meet market requirements for compact cooling units for efficient enclosure climate control,” explains Steffen Wagner, Climate Control Director at Rittal.
In addition to the CULUS listing, Rittal cooling units and fan-and-filter units also have a UL listing in the new “FTTA” (Environmental-rated Accessories for Enclosures) category. “With FTTA approval, the type rating/IP protection class of the climate-controlled enclosure is certified by UL. This means that one of our user group most frequently asked questions has an authoritative response,” says the climate control specialist.
With its Blue e+ cooling unit range, Rittal relies on an innovative, patented hybrid technology. This combines a compressor cooling unit and heat pipe, which provides passive cooling. The control strategy for hybrid operation is a factor that has significant influence on the huge efficiency gains. Moreover, the compression cooling system of the new Blue e+ is range highly energy efficient. Frequency converters precisely adjust the speed of the DC motors for the fans and compressors to achieve the exact cooling output required. They vary the speed of the system’s fans and compressors by voltage control, so allowing the cooling output to be tailored precisely to the requirements at all times. This cuts energy consumption significantly over conventional solutions. “Thanks to the high energy efficiency of new cooling units, savings of up to 75% are possible – as a number of test results show”, Steffen Wagner pointed out.
All these units in the new range can be operated flexibly in all standard grids worldwide thanks to their multi-voltage capability. Permissible input voltage ranges from 110 V (single-phase) to 480 V (three-phase) in conjunc-tion with a mains frequency of 50 Hz or 60 Hz.
Precise, variable-output cooling minimises thermal stress on components. Constant temperature fluctuations, such as in the conventional two-point control systems are now a thing of the past. This not only increases the service life of the cooling units and enclosure components, it also means higher process reliability.
The new graphical touchscreen control panel displays all key information at a glance. System messages appear as plain text and are multi-lingual. Standardised communica-tion interfaces ensure easy integration in a production plant’s control systems. With the new IoT interface, Rittal also enables Blue e+ units to link to customer-owned monitoring, energy management and/or superordinate systems via OPC-UA, Profinet, SNMP, Modbus TCP and CANopen, enabling predictive maintenance, data analytics and more.
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