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800W supply provides 300% peak power

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By Nick Flaherty

Cosel has launched an 800W free-air convection cooling power supply for high reliability industrial and medical designs.

The AEA800F series can deliver 300% peak power for a period of up to 3,000 milliseconds and is designed for applications requiring a high level of safety. The AEA800F 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.

The layout is optimized for free-air convection making it ideal for use in equipment being operated in low noise environments.

Power supplies must be able to deliver extra power during peak operation times as required by dynamic loads e.g., motor startup. To satisfy and sustain such conditions the power supply must be designed with a high dynamic control level and a power stage able to sustain repetitive peak loads.

The AEA800F is certified to the EN62477-1 Over Voltage Category Three (OVC III), allowing final equipment powered by the supply to be directly connected to the main distribution panel without adding an extra level of isolation. This simplifies the systems designer’s task, reduces costs and guarantees the highest level of efficiency.

For medical applications, the AEA800F input to output isolation complies with 2MOPP, its input to ground with 1MOPP, and output to ground with 1MOPP making the product suitable for Body Floating (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.

For international applications, the AEA800F has an input voltage of 85 to 264VAC. Three output voltages are available: 24V, 36V and 48V with respective current ratings of 34A (Peak 72.5), 22.7A (Peak 48.4A) and 17A (Peak 36.3A). Output voltage can be adjusted using a built-in potentiometer.

For low harmonic current distortion, the AEA800F uses active Power Factor Corrector (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%.

For additional power the AEA800F can be connected in parallel, up to six units. When in parallel, by adjusting the output voltage on the ‘Master’ unit, ‘Slaves’ neatly automatically adjust their output voltage to be of equal value.

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

The AEA800F includes built-in inrush current, overcurrent, overvoltage protection circuits, and thermal protection.

In its open frame format, the AEA800F measures 50 x 127 x 203.2 mm (1.97 x 5 x 8 inches) 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, EN62477-1 (OVC III) certified.

To accommodate application specific requirements, a number of options are available including: Coating (C), Additional cover (N), Vertical positioned screw on a terminal block (T), Terminal block changed to a connector (J), Extended features: Auxiliary outputs (AUX1 12V1A), (AUX2 5V1A), Remote ON/OFF and Alarm (R3), UL508 certification (T5), Over current protection mode changed from hiccup mode to shutdown (P5).

The AEA series is suitable for a large range of applications such as: robots and robotics, infusion-pumps, ventilators, actuators, process control, radio and transmission equipment, and emergency signaling.

The AEA800F series has a full five-year warranty and conforms to the European RoHS, REACH and Low Voltage Directives.

The AEA series includes three models covering from 600W to 1000W, the AEA600F, AEA800F, AEA1000F all offering peak power for demanding applications.

www.coseleurope.eu/Products/AC-DC/AEA

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