Carlsbad, Calif. [1 November, 2011] – Emerson Network Power, a business of Emerson (NYSE:EMR) and the global leader in enabling Business-Critical Continuity™, today announced a new 24 Vdc output model in its LCC250 series of sealed 250 watt fanless ac-dc power supplies. Ideal for demanding sealed box and outdoor applications, the LCC250 power supply series includes conduction-cooled models providing full useable power at elevated temperatures.
With a wide operating temperature range of minus 40 to 85 degrees Celsius, Emerson Network Power LCC250 power supplies are housed in a robust fully-sealed enclosure offering IP64 protection against the ingress of dust and water. This makes them ideal for applications that require the power supply to be located in the same outdoor environment as the equipment it is powering, such as bulk power for outdoor signage and for telecom installations such as antenna and base station equipment.
The power supplies are equally suitable for indoor use, such as in control consoles, indoor signage and desktops for medical applications, where the absence of cooling fans can help minimize dust and noise. LCC250 power supplies are fully approved to the international EN60601-1 safety standard for medical electrical equipment.
LCC250 power supplies have a very compact form factor, enabling them to be accommodated easily in end users’ equipment. There is a choice of mounting types; conduction-cooling and convection-cooling. All models have a small 7 inch by 4 inch (178 mm by 101 mm) footprint; the conduction-cooled versions have a height of just 1.1 inch (28 mm), while the convection-cooled versions feature an integral low profile heat sink which raises their overall height to 1.5 inch (38 mm). Both imperial and metric mounting holes are provided as standard, and the use of substantial 12 inch length (300 mm) cables for the ac input, dc output and control connections further simplify installation.
The conduction-cooled models introduce a new level of power flexibility. Unlike many power supplies on the market, which typically require output derating above approximately 55 degrees Celsius, Emerson Network Power LCC250 supplies fed from a nominal 115 Vac input are capable of maintaining their full 250 W load capacity up to their maximum baseplate temperature of 85 degrees Celsius. This makes them especially cost-effective for users who would otherwise need to budget for larger or additional power supplies.
LCC250 power supplies feature a universal 90-264 Vac, 47-63 Hz input – enabling them to be used virtually anywhere in the world without adjustment – and the new LCC250-24V-xP produces a single 24 Vdc output, adjustable by plus or minus 15 percent, capable of delivering 250 W max. For maximum safety, both live and neutral lines feature internal fuses.
Active power factor correction is employed to minimize input harmonic current distortion. The power supplies have a safety-ground leakage current of less than 275 µA when fed with a 250 Vac input, and provide an output hold-up time of at least 16 ms when fed with a 115 Vac input and delivering full load. The Emerson Network Power LCC250 is able to accommodate and tolerate capacitive loading of up to 330 µF/Amp.
All Emerson Network Power LCC250 power supplies are high efficiency designs, typically achieving 91 percent for the 24V version at full load, and featuring very tight regulation that maintains output to within two percent for all permissible line, load and temperature conditions. Output ripple and noise are held to less than one percent. They are capable of operating in constant-voltage or constant-current mode, which is frequently a requirement for LED lighting applications.
All user adjustment facilities, including output voltage and output current trim pots and user-selectable positive or negative logic remote output on/off, are readily accessible beneath a rubber seal on the unit’s end plate. The supply comes with differential remote sensing and can compensate for a drop of up to 0.5 Vdc between the output cable termination and the load.
Emerson Network Power LCC250 power supplies are extensively protected against fault conditions. Overcurrent and overtemperature protection are fully auto-recovering; overvoltage protection is latching and requires the ac input to be recycled before output power can be restored.
Safety approvals include UL/CSA/TUV 60950/60601-1, CE Mark (LVD), CB certification and China CCC. The power supplies are also fully compliant with the Restriction of Hazardous Substances (RoHS) per EU directive 2002/95/EC.
The conduction and convection cooled versions of Emerson Network Power’s LCC250 power supplies are available at the competitive prices of $103 and $109 respectively per unit in production quantities. Sample quantities are available now. For additional information, please see the LCC250 websheet.
A high resolution photo of the LCC250 series is available.
For more information on power supplies by Emerson Network Power, visit www.PowerConversion.com/power-supplies
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About Emerson Network Power
Emerson Network Power, a business of Emerson (NYSE:EMR), is the global leader in enabling Business-Critical Continuity™ from grid to chip for telecommunication networks, data centers, health care and industrial facilities. Emerson Network Power provides innovative solutions and expertise in areas including AC and DC power and precision cooling systems, embedded computing and power, integrated racks and enclosures, power switching and controls, infrastructure management, and connectivity. All solutions are supported globally by local Emerson Network Power service technicians. For more information on Emerson Network Power's embedded power products and services for original equipment manufacturers and system integrators visit www.Emerson.com/EmbeddedPower. Learn more about Emerson Network Power products and services at www.EmersonNetworkPower.com.
Emerson (NYSE: EMR), based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to provide innovative solutions for customers in industrial, commercial, and consumer markets through its network power, process management, industrial automation, climate technologies, and tools and storage businesses. Sales in fiscal 2010 were $21 billion. For more information, visit www.Emerson.com.
Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. All other product or service names are the property of their respective owners. © 2011 Emerson Electric Co.