Emerson Network Power triple-output 45-W supplies carry safety approvals

Emerson Network Power is offering two new triple-output open-frame AC-DC power supplies, the NPT43-M and the NPT44-M. Extending Emerson's successful NPT40-M series, these new models are suitable for a wide range of IT equipment, medical, light industrial, instrumentation, and process systems, as well as low-power dental and laboratory equipment. NPT40-M series power supplies are rated for 45 W output with convection cooling and up to 55 W with forced-air cooling. The NPT43-M offers 5, 15, and ?15 V DC regulated outputs while the NPT44-M offers 5, 12, and 24 V DC regulated outputs. The expanded NPT40-M series carries a comprehensive set of worldwide safety approvals for IT equipment and non-patient-contact and non-patient-critical medical applications. These power supplies can accommodate operating temperatures from ?20 to +50 °C at full power and as high as 80 °C with de-rating. They feature an industry standard 2 x 4 inch (51 x 102 mm) footprint, and a height of less than 1 inch (25 mm), making them well suited for 1U-high portable and rack-mounting equipment. Emerson Network Power's NPT40-M series has a wide-range universal input capable of accommodating any AC voltage in the range of 90 to 264 V AC. It can also operate from any DC input in the range 127 to 300 V DC, enabling it to be used virtually anywhere in the world. The NPT42-M power supply requires less than 74 W of input power, and inrush current is less than 50 A peak at 230 V AC input. Emerson Network Power's NPT40-M series power supplies fully comply with the international EN 61000-3-2 standard for harmonic emissions. They feature built-in EMI filters (CISPR 22 Class B) and meet rigorous international EMC standards, including FCC Class B, EN 55022 class B, and VDE 0878PT3 Class B for conducted noise. Key safety design aspects include fuses in both the line and neutral connections, and a safety-ground leakage current which does not exceed 275 μA. Safety approvals include TUV/UL/CSA 60950 and 60601-1, CB certificate, CE mark (LVD) and CQC mark. All three outputs on Emerson Network Power's NPT40-M series power supplies feature short-circuit protection. The main output is also protected against over-voltage conditions, and primary-side total power monitoring protects the overall power supply against overload. The power supply delivers a high demonstrated MTBF of 550,000 hours at full load and under 25 °C ambient operating conditions. Emerson Network Power