The QM8 modular power supplies are rated at 1,200 to 1,500 W. These models are available with up to 18 outputs, have full MoPPs (Means of Patient Protection) isolation and low acoustic noise. With medical and industrial safety certifications, the power supplies are suitable for use in medical, test and measurement, communications and broadcast equipment.

Accepting a wide range 90 to 264 Vac, 47-440 Hz input, the QM8 can deliver 1200 W at low line and 1500 W with a high line 150-264 Vac input. With its modular construction, the series can be configured using a simple on-line configurator to provide 1 to 18 independently regulated outputs and include individual output good signal and remote on/off functions. Module output voltages range from 2.8 to 105.6 V and output power levels from 300 to 1200 W. A further subset of option modules provides an ac Fail signal, standby voltages (up to 12 V, up to 2 A), global remote on/off and PMBus communications. Overall case dimensions for the QM8 are 200×63.3×270 mm (W x H x D).

The QM8 will operate in ambient temperatures of -20 to +70°C, with output power and output current linearly derating above 50°C to 50% at 70°C. With efficiencies of up to 91%, less internal heat is generated allowing the use of a low speed cooling fans to reduce audible noise. A lower airflow speed also significantly reduces the ingress of dirt and other contaminants, improving product reliability. All models in the QM series have a seven-year warranty as standard.

The power supply has 4,000 Vac (2xMoPPs) input to output, 1,500 Vac (1 x MoPP) input to ground and 1,500 Vac (1 x MoPP) output to ground isolation. All models are certified to the IEC/EN/UL/CSA 60601-1, ANSI/AAMI ES 60601-1 and IEC/EN/UL/CSA 60950-1 safety standards. The QM series is also designed to meet IEC/EN61010-1 with CE marking for the Low Voltage, EMC and RoHS2 Directives. Earth leakage current is less than 300 µA, and complies with the EN61000-6-3:2007 and EN60601-1-2:2015 (curve B conducted and radiated) emission standards. The units also meet the EN60601-1-2 and EN61000-6-2 immunity standards and are designed and manufactured under the control of ISO9001 and ISO13485 (including risk management).

More information can be obtained at the following TDK-Lambda Americas website, http://www.us.tdk-lambda.com/lp/products/qm-series.htm, or by calling 800-LAMBDA-4. Products can be configured using the “Product Quick Finder” at http://www.us.tdk-lambda.com/lp/.