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International newsPower04. 04. 2022 | Rolf Sylvester-Hvid

1200W power supply has adjustable ‘near to zero’ output voltage and current for conduction cooling applications

International newsPower04. 04. 2022 By Rolf Sylvester-Hvid

Powerbox announces the release of the 1200W rated OFI1200A AC/DC power supply for industrial applications. Optimized for conduction cooling, the OFI1200A delivers high performance levels across a baseplate temperature range of -40 to +95 degrees C without the use of a fan. The power supply operates with a wide universal input range from 85 to 305VAC with power factor correction (PFC). Covering a large range of applications, its output voltage and current can be adjusted from near zero to the maximum allowed for each model.

Powerbox’s new 1200W OFI1200A power supply is optimized for conduction cooling as required by demanding industrial applications

A number of industrial applications require power supplies to operate with limited or no ventilation cooling. In this respect, those operating in harsh environments where electronic equipment is installed in a sealed box, radio communication systems subject to adverse weather conditions, outdoor displays and traffic signaling, and indoor equipment with very strict audible noise restrictions. In addition to environmental requirements, reliability and cost of maintenance are motivating systems designers not to use fans and blowers.

Conduction cooling requires very specific building practices and the PRBX OFI1200A has been designed to guarantee optimal heat transfer from the dissipating components to the baseplate, delivering a high level of performance within an operating temperature of -40 to +95 degree centigrade at baseplate. Depending on the assembly method and the overall cooling conditions, a derating may apply as specified in the technical documentation.

To cover a large range of applications, the OFI1200A operates with a wide universal input range from 85 to 305VAC (Nominal 100 to 277VAC). The unit includes a PFC with a coefficient of 0.98/0.95 (110VAC/230VAC).

The OFI1200A is available in three versions of single output DC voltage, 12V/84A ; 28V/43A and 48V/25A. Using a high efficiency topology, the typical efficiency for the 48V output unit at 230VAC input is an excellent 92%.

To make it possible for customers to precisely adjust the voltage and current to their application, the OFI1200A offers two analog inputs, VTRM and ITRM. Using those functions, the output voltage and current can be adjusted from near zero up to the maximum specified per model. For example, the 28V output can be adjusted from near zero volts up to 33.6V, and the output current from near zero amps up to 43A. The output voltage can also be adjusted using the provided onboard potentiometer.

In its open frame format, the OFI1200A measures 142 x 39 x 260mm and weighs 1.2kg max. An optional metal cover is available, adding just 1mm to the height and 200 grams to the weight (Option-N).

http://www.prbx.com/product/ofi1200a/

Skrevet i: International news, Power

 
 

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