Powerbox Power Supplies Ideal for Defense & Harsh Environments
Powerbox has announced the release of its new ruggedized 1200W AC/DC power supply for ground-based defense applications and harsh industrial environments. In metal chassis format with a baseplate for conduction cooling, the OFD1200A series can be used with a baseplate operating temperature range of -40 up to +95 degrees C. For extremely demanding applications the OFD1200A features a conformal coating and is mechanically ruggedized according to the MIL-STD810H standard. The product is as electrically well ruggedized to withstand harsh transients and meet demanding EMC performance levels as required with most common defense and the more demanding industrial applications, according to the MIL-STD- 461 CE-102 and also meeting the MIL-STD-1399-300. 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. Designed for high availability, short time-to-market and to meet commercial and military off-the-shelf (COTS/MOTS) business models, the OFD1200A is available in four output voltages of 12V, 28V, 48V and 65V and can be connected in parallel up to nine units delivering an impressive total power level of up to 9,720W.
A number of defense 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 surveillance and access control, and indoor equipment with very strict audible noise restrictions. In addition to environmental requirements, reliability and maintenance cost motivate systems designers not to use fans and blowers, privileging conduction cooling.
Conduction cooling requires very specific building practices and the PRBX OFD1200A 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 degrees centigrade at the baseplate. Depending on the assembly method and the overall cooling conditions, a derating may apply as specified in the technical documentation.
The OFD1200A is available in four versions of single-output DC voltage, 12V/84A; 28V/43A; 48V/25A, and 65V/18.5A. Using a high-efficiency topology, the typical efficiency for the 48V output unit at 230VAC input is an excellent 92%.
