Power

Pure convection cooled IP66-rated sine wave inverter

7th April 2020
Alex Lynn

ABSOPULSE Electronics has recently released the CSI 1K-24/230-3XD3-HSF, a 1kVA addition its line of IP66-rated DC/AC sine wave inverters with pure convection cooling. This 1kVA inverter is designed for applications where a suitable heatsinking surface is not available and only pure convection cooling is feasible.

It is suitable for operation in transportation, heavy industry, mining, military, marine and telecom applications where protection from the ingress of water from powerful jets, sand, metal dust, oil and other contaminants is essential.

The CSI 1K-24/230-3XD3-HSF inverter is built with three power modules packaged in IP66-rated die cast aluminum enclosures. A heatsink assembly is attached to the under-surface of each IP66 module, which is attached to a baseplate, providing pure convection cooling. Additional cooling is also achieved by internal conduction to the walls of each IP66 enclosure and convection via the outside surface.

This enables operation within a -25 to +55°C temperature range for full specification without derating. Wider temperature ranges are available on request. The inverter measures 406x526x94mm, which excludes the dimensions of the heatsink fins.

The 1kVA microprocessor-controlled high frequency PWM inverter converts 24Vdc (21-230Vdc range) input to 230Vac continuous at 50Hz. Custom input/output values are readily available. Input and output are via sealed circular connectors, cable glands or custom connections. The inverter is are equipped with heavy filtering on the input and output, which contributes to low noise and ensures that the inverter can be used in EMI sensitive environments without additional filtering.

The input meets EN55032 Class A with wide margins. Electronic protection includes 2250Vdc input-output isolation, inrush current limiting and reverse polarity protection. The unit complies with EN60950-1, UL458 and corresponding international safety standards.

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