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The OSRAM LU150/55/MED is a 150-watt high pressure sodium (HPS) lamp in an ED17 bulb shape with an E26 medium screw base. It delivers 15,800 initial lumens and maintains a mean output of 13,400 lumens over its rated 24,000-hour life. Operating on an S55/O ANSI-coded ballast at 55 volts, this lamp is built for demanding commercial and industrial lighting systems. The clear glass envelope, universal burn position, and lead-free construction make it a compliant, direct-drop-in replacement for standard HPS lamps that do not meet the federal TCLP test requirements. Licensed electrical contractors and lighting maintenance technicians are the typical installers for this product type.
This lamp fits a wide range of fixed and outdoor lighting applications. It is suited for architectural accent lighting, canopy lighting, high bay and low bay industrial fixtures, floodlights, roadway cobra head fixtures, and wall mount luminaires. Its universal operating position allows installation in both vertical and horizontal fixture orientations without derating. The 3 to 4 minute warm-up time and 1 minute hot restrike time are consistent with standard HPS ballast system expectations in these environments.
Designed as a direct OEM-style replacement for 150-watt high pressure sodium lamps using an S55/O ANSI-coded ballast and E26 medium base in architectural, canopy, floodlight, high bay, low bay, industrial, and roadway cobra head or wall mount fixtures.
Installation should be performed by a licensed electrician or qualified lighting maintenance technician. Always de-energize the fixture and allow the existing lamp to cool completely before handling, as HPS lamps operate at high internal pressure and elevated surface temperatures. Verify the existing ballast ANSI code matches S55/O before installing this lamp. Handle the lamp by the base when possible and avoid touching the glass envelope with bare hands, as skin oils can create hot spots that shorten lamp life.
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