UL544 series

The UL544 series is designed as AC/DC medical approved patient contact rated. High voltage breakdown and low leakage current make these units ideally suited for madical and patient contact applications. Portable ultrasound scanners, electrocardiograph monitoring systems and mircroprocessor controlled blood analyzers are just a few of the many applications utilizing UL544 units. Althrough underwriters laboratories maintains strict requirements to ensure the safety of such equipment.

UL544 series has three features. The first one is it would be patient contact rated. The next one is it would have 2500Vac breakdown. The next one is it would have faraday shielded transformers. That are all the main features.

Some important specifications of UL544 series have been concluded into several points as follow. The first one is about its input voltage range which would be from 105 to 125Vac. The next one is about its voltage frequency which would be from 50 to 440Hz. The next one is about its ripple and noise (PARD) which would be 1mV RMS(CM, P, PA series) and 7mV RMS(ES, EA, EC series). The next one is about its output AC leakage current which would be 10uA (patient contact rated). The next one is about its short circuit protecton which would be current limiting (CM, P, PA series) and power foldback (ES, EA, EC series). The next one is about its temperature coefficient which would be 0.02%/°C typical. The next one is about its I/O isolation which would be 2500V RMS (patient contact rated). The next one is about its operating temperature range which would be from -25°C to +71°C (no derating). The next one is about its storage temperature range which would be from -40°C to +85°C. The next one is about its cooling which would be free-air convection. That are all the main specifications. And so on. For more information please contact us.