| November 2007 |
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New NTS 350 Series power supply is cost-effective with small footprint Fully-featured 350W high-efficiency bulk switcher provides power-factor-correction, Or-ing diode, standby and auxiliary outputs UR Group is expanding its range of low-to-mid-power solutions with the introduction of the Astec NTS 350 series from Emerson Network Power. The Astec NTS Series family of 350-Watt bulk AC-DC switching power supplies includes new 24V output configurations and is available with convection cooling or optional forced-air. The new NTS355 models feature a compact 10.2 x 17.8 cm (4x7 inches) footprint to achieve a high-density 8.3W per cubic inch. The fan-cooled option supplies the full rated output up to 50°C with 30 CFM forced air and the units can be set up for lengthwise or crosswise airflow for added flexibility. Operating at 85 percent efficiency, the devices incorporate active power factor correction to minimize input harmonic distortion; the switchers also accept input from 85-264VAC or 120-320VDC. The units are suited for use as AC-DC front ends for DC-DC converters and can be used in a wide variety of applications, such as telecommunications, networking, test and measurement, single-board computers and gigabit Ethernet devices. A built-in Or-ing diode eliminates the need for external circuitry when using the device in a redundant configuration. All models in the Astec NTS350 Series incorporate built-in Class B EMI filtering, remote sense, remote inhibit and single-wire parallel on the primary output that enables current-sharing to balance loads. The units also include a 12V 1A auxiliary output and 5V at 2A standby output as well as overload, over-voltage and thermal protection. With an operating temperature range of zero to 50°C without derating, the units can function up to 70°C by derating the output 2.5 percent per degree C. They are fully compliant with IEC EN61000-3-2 harmonic and IEC EN61000-4-X susceptibility standards. For more information, call UR Group on 01793 826600.
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