R For Your Information ... APPLICATION NOTE Using Battery Powered Emergency Backup Ballasts in Conjunction with Lutron Dimming Ballasts # 50 Overview In commercial fluorescent applications, battery backup ballasts are sometimes used for required emergency and egress lighting. Battery backup ballasts provide one solution for addressing emergency lighting. These ballasts provide light on a temporary basis when normal power has been interrupted. Some of the major manufacturers are Bodine Emergency Lighting, Exide Technologies and Iota Engineering. To unswitched AC: use proper tap and cap unused lead Typical Wiring Diagram: LINE BLACK WHITE LUTRON DIMMER BLACK BLUE BLUE ORANGE BLUE BLUE/WHT WHITE DIMMING BALLAST RED YELLOW RED YELL/BLK EMERGENCY BALLAST BLACK 120V ORANGE 277V WHITE COM RED YELLOW YELLOW RED LAMP 1 WHITE BATTERY CONNECTOR INDICATOR LIGHT LAMP 2 (EMERGENCY) Emergency Ballast Recommendations Lutron fluorescent ballasts are designed to provide lamps with a precise amount of voltage to ensure long lamp life, flicker-free performance and lamp balance. The addition of an emergency ballast can affect the amount of voltage delivered to the lamps. It is imperative that any emergency ballast should not significantly alter the amount of voltage that is delivered to the lamp and filaments. We recommend choosing emergency ballasts from manufacturers who take these considerations into account. Please refer to the emergency ballast manufacturer for compatibility. Wiring Recommendations While the wiring method may change for each manufacturer, the main function is to illuminate one lamp or two lamps within the chosen fixture in an emergency condition. There are several guidelines for using this technology with Lutron dimming ballasts. • Always keep the lamp wires as short as possible. The total lamp wire length for Lutron fluorescent ballasts includes the wire length of the back up device. Please see Lutron ballast specifications for maximum allowable lamp wire length. • Depending on the fixture layout there may be a slight imbalance of illumination on a multi-lamp ballast during normal operation. • Contact Lutron Technical Support for further information. Worldwide Technical and Sales Assistance If you need assistance, call the toll-free Lutron Technical Support Center. Please provide exact model number when calling. 24 hours/day + 7 days/week North and South America U.S.A., Canada, Caribbean: 1.800.523.9466 Mexico: +1.888.235.2910 Central/South America: +1.610.282.6701 Europe Technical support: +44.(0)20.7680.4481 Asia Northern China: 10.800.712.1536 Southern China: 10.800.120.1536 Hong Kong: 800.901.849 Indonesia : 001.803.011.3994 Japan: +81.3.5575.8411 Macau : 0800.401 Singapore: 800.120.4491 Taiwan: 00.801.137.737 Thailand: 001.800.120.665853 Other countries: +65.6220.4666 Lutron Electronics Co., Inc. 7200 Suter Road Coopersburg, PA 18036-1299 U.S.A. Phone: (610) 282-3800 Fax: (610) 282-3090 Visit us on the web at www.lutron.com Lutron and Hi-lume are registered trademarks of Lutron Electronics Co., Inc. Eco-10 is a trademark of Lutron Electronics Co., Inc. Need additional assistance? Call the Lutron Technical Support Center 1-800-523-9466. Please provide exact model number when calling.
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