Class I/II 500-W configurable medical supplies work with low airflow, meet Curve B EMI specs

The XMS500 series of ac-dc power supplies are rated at 500 W output power and have a Class I and Class II (no earth ground connection) construction. The series conforms to curve B conducted and radiated emissions, with a 6-dB margin and has a low leakage current of less than 150 µA. The high operating efficiency and mechanical design enables the XMS500 to operate at full load with airflow rates of just 1 m/sec., reducing audible noise. Applications include home healthcare, hospital, imaging and clinical diagnostic systems in addition to industrial, test and measurement and communications equipment.

Designed as configurable products, the supplies come with multiple standard options to help optimize both system performance and cost, without incurring development charges or minimum purchase quantities. The options include case styles (including an internal low speed fan), a choice of standby voltage, a 12-V fixed or variable speed fan supply, remote on/off, ac fail and single or dual-input fuses. Nominal outputs include 12 V, 24 V, 36 V or 48 V with other voltages upon request. The product has a five year warranty.

The XMS500 accepts a 90 to 264-Vac input, withstanding 300 Vac for five seconds and can operate in ambient temperatures of up to +70°C, derating linearly above 50°C by 2.5%/°C. The open frame version measures 102x180x37 mm and the U-channel 107x180x39.5 mm. The low profile allows installation in systems where space is limited.

All models are certified to IEC/EN/UL/CSA 60601-1 and IEC/EN/UL/CSA 60950-1 with CE marking for the Low Voltage, EMC and RoHS2 Directives. The series is compliant to EN 55011-B, EN 55032-B conducted and radiated emissions (for both Class I and II), EN 61000-3-2 harmonics, IEC 60601-1-2 Edition 4, and IEC 61000-4 immunity standards.

Input to output isolation is 4,000 Vac (2xMoPP), input-to-ground isolation 1,500 Vac (1xMoPP) and output-to-ground isolation is 1,500 Vac (1xMoPP) for suitability in B and BF rated equipment.

More info: TDK-Lambda Americas, 401 Mile of Cars Way, Suite 325, National City, CA 91950, 800-LAMBDA-4, http://www.us.tdk-lambda.com/lp/products/xms-series.htm.