Robust and reliable power supplies for demanding industrial and medical applications

31-08-2022 | Cosel | Power

COSEL Co, Ltd has introduced an 800W free-air convection cooling power supply, the AEA800F series. With demanding applications in mind, the series can deliver 300% peak power for up to 3,000 milliseconds. Created for applications demanding a high level of safety, the series is certified according to the EN62477-1 (OVC III) standard for industrial applications and is approved in accordance with ANSI/AAMI ES60601-1 and EN60601-1 3rd Edition for medical applications. It is suitable for BF applications and complies with 2MOPP (IN/OUT) and 1MOPP (OUT/FG) safety requirements. The device layout is optimised for free-air convection, making it ideal for use in equipment being operated in low-noise environments.

For medical applications, the series input to output isolation complies with 2MOPP, its input to ground with 1MOPP, and output to ground with 1MOPP making the product ideal for BF applications. The units are approved in accordance with ANSI/AAMI ES60601-1 and EN60601-1 3rd Edition. The AEA800F has an input to output isolation of 4,000VAC, input to ground (FG) of 2,000VAC and output to ground (FG) of 1,500VAC.

Designed for international applications, the versatile series has an input voltage of 85VAC to 264VAC. Three output voltages are offered: 24V, 36V and 48V, with respective current ratings of 34A (Peak 72.5), 22.7A (Peak 48.4A) and 17A (Peak 36.3A). The output voltage can be altered using a built-in potentiometer.

For low harmonic current distortion, the series uses active PFC, and the switching stage uses an LLC resonant topology deploying the latest generation of power semiconductors, conferring to a typical efficiency of up to 95%.

The series can be connected in parallel, up to six units for additional power. When in parallel, by adjusting the output voltage on the ‘Master’ unit, ‘Slaves’ neatly automatically adjust their output voltage to be of equal value.

Optimised for convection cooling, the AEA800F can be operated within an ambient temperature range of -20C to +70 C. Depending on the assembly method and ventilation employed in the final equipment, a derating may apply as specified in the technical documentation.

The series includes built-in inrush current, overcurrent, overvoltage, and thermal protection circuits. In its open frame format, the series measures 50mm x 127mm x 203.2mm (1.97" x 5" x 8") and weighs 1.4kg max with cover.

The AEA800F complies with safety requirements: UL (USA), C-UL (Canada), DEMKO (Denmark), and TUV (Germany). The product is UL62368-1, EN62368-1, and EN62477-1 (OVC III) certified.

The AEA series is ideal for many applications, such as robots and robotics, actuators, infusion pumps, ventilators, process control, radio and transmission equipment, and emergency signalling. The series has a full five-year warranty and conforms to the European RoHS, REACH and Low Voltage Directives.

By Seb Springall