Powerbox has announced the release of a new 700W power supply for industrial applications named the OFI700A. The power supply operates with a wide universal input range from 85 to 264VAC with power factor correction (PFC). It is available with DC outputs of 12V, 28V (adjustable to 24V) or 48VDC. A 12V auxiliary is also provided.
In many industrial applications cooling of the dissipating elements relies on the use of fans and blowers. But there are applications where it is not possible or even allowed to use active ventilation. In harsh environments or in applications where the required reliability level imposes the need to remove all possible risk of failure, fans and blowers are not allowed. A sealed box is required for laser-cutting, but there is also a growing demand for equipment installed in supervisory rooms or even offices requiring that for the comfort and health of the employees, generated noise is simply not allowed or needs to be very much limited.
Three versions of single output DC voltage available: 12V/58.4A; 28V/25A and 48V/14.6A
Conduction cooling requires very specific building practices and the PRBX OFI700A has been designed to guarantee optimal heat transfer from the dissipating components to the baseplate, delivering a high level of performances within an operating temperature of -40 to +95 °C at baseplate. Depending on the assembly method and the overall cooling conditions, a derating may apply as specified in the technical documentation.
The unit includes a PFC with a coefficient of 0.95/0.92 (110VAC/230VAC). For applications powered by a DC bus e.g., mining equipment, the OFI700A operates from 120 to 350VDC.
The output voltage can be adjusted using the provided onboard potentiometer. For example, the 28V output can be adjusted from 22.4V to 33.6V, covering the 24V applications. An additional voltage of 12V/0.1A is provided for auxiliary functions.