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EETE JULAUG 2012

DESIGN & PRODUCTS POwER SUPPlIES AC/DC lED driver powers multiple luminaires signing custom lighting projects. Designed for use with separate Power electronics manufacturer Phihong has developed a 72W driver ICs to power several luminaires from a single source, the constant voltage LED driver designed to power area, wash, PDA072B may be used in a wide range of environments, both and architectural lighting in harsh environments. Designated damp and dry. The fully potted, water-resistant driver has an the PDA072B-24VG, ingress protection rating of 65 and is operable in temperatures the driver has a Class 2 ranging from -40°C to +60°C. The unit also features power fac- output of 24VDC at 3A tor correction greater than 0.9, per Energy Star specifications and is compliant with for power supplies in SSL luminaires, and bears safety approval the Energy Star specifi- markings from UL and CE. Fully equipped with over-voltage, cations regarding solid- over-current, short-circuit, and open circuit protections, the state lighting luminaires. 72W power supply’s minimum average efficiency rating has According to the vendor, been measured at 84% for 120VAC input and 88% for 277VAC the new outdoor-com- input. It also features a measured lifespan of 50,000 hours at patible driver is suited maximum load. The PDA072B-24VG carries a standard 5-year for powering multiple LED lamps in parallel, eliminating the need warranty, measures 241x43x30.5mm, and weighs 750 grams. for individual drivers. By combining a constant voltage driver Phihong with individual driver ICs, users enjoy greater flexibility when de- www.phihong.com/LED 2.5-kw 1U hot swap, front end power supplies grammable by resistance, external voltage or optional PMBus support distributed power architectures compatible I²C communication interface. Output current is exter- TDK-Lambda Germany, a group company of the TDK Corpora- nal voltage or optional PM bus programmable. The HFE2500-12, tion, expands the HFE series of 1U high, single output AC-DC -24 and -48 power supplies, with dimensions of 325x107x41mm, hot swap, front end power supplies with the addition of 2.5 kW can be used individually or up to four units can be mounted into models. Offering an industry lead- a dedicated 1U rack delivering 10 kW. A total of 8 units can be ing power density of 29 W/in3, the configured in parallel to form a hot swap N+1 redundant power HFE2500 power supply is equally system with single wire current sharing. A keying system prevents well-suited for 2.5 kW bulk power mis-insertion of modules into adjacent racks of differing voltage. and Distributed Power Architecture Each power supply has variable speed, temperature-controlled (DPA) applications. All HFE2500 cooling fans and can operate in temperatures ranging from -10 models feature full current-sharing to +70°C. Over voltage, over current and over temperature are capabilities and internal ORing standard protection features. For system monitoring, there are MOSFET for isolation to support hot-swap and redundancy signal returns for DC OK, AC-fail, over temperature and PS exist. application. Operating from a universal 85 to 265 Vac input, the Remote ON/OFF control and remote sense are included. HFE2500 features high efficiency of up to 93%. Up to ±20% TDK-Lambda output voltage adjustment is possible. Output voltage is pro- www.uk.tdk-lambda.com Trojan battery expands industrial line with new Industrial line features the following unique design elements. The 2-V designs to enhance transport applications 2-volt cells of the new Industrial line additions are assembled in Trojan Battery Company has expanded its Industrial line offering a rugged polypropylene housing designed to protect the inter- of deep-cycle batteries for renewable energy and backup power nal plates from damage that may occur during transport and applications to include two new sizes. The new 2-volt additions installation. The cells are enclosed in a larger polyethylene outer are designed to make transport and installation of the batter- case that protects against damage caused by harsh environ- ies easier as well as offer more design flexibility for a variety mental conditions such as moisture and dirt buildup, as well as of photovoltaic (PV) applications. The new Industrial batteries safeguards against potential acid leaks. For added protection include the IND27-2V model featuring a 1457Ah capacity at the thick-walled case features a lattice-design that reinforces the C20, and the IND33-2V version that offers a 1794 Ah capacity at outer case’s structural integrity. This dual container construc- C20. The Industrial line is designed to support large daily loads tion provides added protection against extreme temperatures. where the batteries are cycled regularly in a range of PV systems Engineered for high-energy requirements, the Industrial line including micro-grids, off-grid resorts, rural telecom applications features the following advanced battery technologies that provide and more. To enhance safety, the new Industrial batteries also optimum performance. Trojan’s Alpha Plus Paste is a propri- feature customizable terminal protectors which increase protec- etary, high-density paste formulation precisely engineered to tion against shock or short circuiting and terminal corrosion. The deliver outstanding battery performance. This high-density paste protectors feature perforated cut-outs along the sides and top optimizes porosity development in the active material utilizing enabling them to be customized to fit the specific cable configu- the active material more effectively resulting in sustained battery ration required by customer. Trojan’s Industrial line is specifically performance over a longer period of time. Trojan’s T2 Technology designed for deep-cycle use and optimized for deep discharge features a patent-pending T2 metal agent which is incorporated and recharge cycles characteristic of renewable energy systems. into Trojan’s Alpha Plus Paste further strengthening the electro- It is engineered for high-energy requirements delivering 1,500 chemical processing capabilities of the paste. cycles at 80 percent depth-of-discharge, and features advanced Trojan Battery Company battery technologies that provide optimum performance. The www.trojanbatteryRE.com 26 Electronic Engineering Times Europe July/August 2012 www.electronics-eetimes.com


EETE JULAUG 2012
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