The 120V and 12V 4-Tier LED Lamp consists of a 4-tiered array of 48 individual LEDs in an optically clear elastomer medium. In the event of failure of one or more individual LEDs, the remaining LEDs continue to operate. The entire assembly is neatly potted into a molded Rynite FR350 stem fitted with a standard medium screw Edison base. The lamp head is filled with an optically clear silicon gel.
Lamps provided by B&B Roadway, are selected to provide the best quality available. Our long-life lamps are custom manufactured for B&B Roadway to meet the demands of our industry. (Lamps are shown in receptacles for photographic purposes.)
MEDIUM BASE LAMPS: (back row, from left to right: “Scepter” LED, Incadescent, “4-Tier” LED) Typically used for navigation lights.
LED Lamps: The “Scepter” and “4-Tier” LED lamps have a rated life of 100,000 hours. Savings on maintenance and power are the most common reasons for choosing an LED lamp. These lamps have individual LEDs for maximum light output thus making it a suitable replacement for standard 120V incandescent lamps. LEDs are color-matched to the lenses for maximum light transmission. (Additional information for these lamps is available here.)
120V INCANDESCENT LAMP: This lamp features a rated life of 20,000 hours compared to typical incandescent lamps with rated lives of 1,000 to 2,000 hours. Many bridges have eliminated routine lamp maintenance by specifying the dual lamp/transfer relay option with these lamps on their navigation lights. Multiple filament support fingers make the lamp better suited to the rugged conditions seen on bridges and highways. The 100W rating provides the brightest light intensity available in the navigation light market.
DOUBLE-CONTACT BAYONET BASE LAMPs: (front row, from left to right: Incandescent, “Pancake” LED) Typically used for gate and barrier arm lights.
“pancake” led lamp: This lamp is available in 120V or 12V. Both are rated for 100,000 hours and provides dramatic life improvement and reliability over incandescent lamps. It can be used as a direct replacement or upgrade for most existing installations currently using bayonet lamps. The “Pancake” LED also features a nickel-plated brass base for superior long-term resistance to corrosion and seizing. LEDs are color matched to light lenses for maximum light transmission.
incandescent LAMP: This option is available for either a 120V or 12V lamp where an incandescent, double bayonet base lamp is required or preferred.
The Model LSP Plunger Limit Switch offers superior plunger switch performance for heavy industrial applications. The design can provide up to 6 individual circuits, more than any similar plunger type switch available, with accurate, repeatable snap-action activation and a substantial over travel. Materials and manufacture are of the highest quality for many years of dependable service.
GENERAL: Plunger Limit Switch shall be Model LSP by B&B Roadway, (888) 560-2060.
CONSTRUCTION: Switch shall be a weather-sealed design, with neoprene gaskets between exterior bolted connections. Cover shall be designed to positively retain a gasket. Drain plugs and a breather shall allow condensation to evaporate or drain from housing. Construction shall be heavy duty, durable and suitable for marine environment. All materials shall be non-corrosive, such as aluminum, bronze, stainless steel or non-metallic. Finish shall be painted aluminum or safety orange, as specified.
PLUNGER: Plunger extension shall permit at least .75″ field adjustment and shall have a rounded end [option: ball end]. Design shall also allow for simple field swapping of service cover hand. Plunger shaft shall be stainless steel. Pre-travel shall be approximately 1.50″ with a minimum overtravel of 2.00″.
ACTIVATION MECHANISM: Trip plate shall be spring loaded with an over-center mechanism to provide simultaneous, positive, accurate, and repeatable snap-action activation of all switches. Trip point shall be field adjustable by simple adjustment of plunger extension.
CIRCUIT SWITCHES: The number of circuits shall be as specified (6 circuits max in standard assembly). Each circuit shall provide independent normally open and normally closed sets of contacts (1 NO and 1 NC). Heavy-duty snap-action microswitches shall be double-break type to increase contact life. Individual switches shall be rated for 15A make / 40A break at 120V (see manufacturer for ratings at other voltages). Switches shall have clearly labeled screw-type compression wire connections and corrosion-resistant contacts.
CONDUIT ENTRY: A 1″ conduit hub shall be provided for wire entry. Housing shall be pre-drilled to permit switching the hub to either side of the housing. Second opening shall be sealed with an o-ring and cover plate.
NEMA 4 or 4X, multiple options and configurations, 4-32 cam sets
The Model LSB Rotary Limit Switch features a unique proprietary cam locking and adjustment mechanism (patent pending). Adjustment of the cams is unequaled in simplicity and accuracy. The LSB Rotary Limit Switch is designed for rugged durability and dependability under harsh conditions. Materials and manufacture are of the highest quality. Models are available with up to 24 or more individual circuits (6-circuit model is shown).
GENERAL: Rotary Limit Switch shall be Model LSB by B&B Roadway, (888) 560-2060, or an approved equal meeting all specifications defined herein.
CONSTRUCTION: Switch shall be a weather-sealed design. Cover shall be designed to positively retain a gasket. A drain plug and breather shall allow condensation to evaporate or drain from housing. Construction shall be heavy duty, durable and suitable for marine environment. All materials shall be non-corrosive, such as aluminum, bronze, stainless steel or non-metallic. Finish shall be painted aluminum or safety orange (shown), as specified.
SHAFT DESIGN: Shaft extension shall be right-handed, left-handed or dual, as specified. Standard switch design shall allow for simple, modular-type conversion between right and left hand in field, allowing removal of complete shaft assembly without detailed disassembly and re-assembly of components. Design shall also allow for simple field conversion to dual-shaft arrangement. Output shaft shall be bronze or other suitable corrosion-resistant material, ¾” [19mm] diameter, with standard square keyway 1.75″ [44mm] long. Shaft shall extend 2″ [51mm] beyond base surface [option: extension and key length as specified]. A suitable sprocket or gear shall be provided by the installer.
CAMS: Cams shall be individually adjustable and shall be firmly and immovably engaged to the shaft under operating conditions. Loosening of a single nut shall allow independent and individual adjustment of any individual cam or cam half. Adjustment of a cam shall not affect setting of other cams or cause movement of other cams. Re-tightening of the nut shall secure all cams to the shaft. Each cam shall consist of a pair of cam halves to permit independent setting of make and break points. Contract plans shall show approximate settings and appropriate cam halves shall be provided to achieve the settings required.
INDEX WHEEL: Rotary switch shall be equipped with at least one index wheel and a pointer. Index wheel shall be marked in degree, with individual increments as small as practical. Index label shall read 0-90 degrees [option: 0-180 or 0-360].
CIRCUIT SWITCHES: The number of circuits shall be as specified. Each circuit shall be controlled by an independent 2-part cam, which activates a SPDT switch. Individual switches shall be rated for 15A [option: 20A]. Switches shall have clearly labeled screw-type wire connections and corrosion-resistant contacts.
CONDUIT ENTRY: A 1″ conduit hub shall be provided for wire entry on switches having up to 16 circuits. A 1 ¼” conduit hub shall be provided on switches having more than 16 circuits. Conduit hub shall normally be installed opposite the shaft. Housing shall be pre-drilled to permit switching the hub to either side of the housing. Second opening shall be sealed with an o-ring and cover plate.
OPTIONAL GEAR REDUCER: A 4:1 gear reducer shall be supplied when specified. Contact factory for details.
GENERAL: The air horn shall be B&B Roadway, Model AHR-2 (dual projectors) [AHR-1 (single projector)] (888) 560-2060, or an approved equal meeting all specifications defined herein.
APPLICATIONS: The air horn shall be used as an aural signal to draw attention to operation of the bridge.
PROJECTOR(S): The projectors shall be of spun brass, approximately 18” (457mm) in overall length each, and shall feature a diaphragm designed for high pressure operation and low air consumption. The projectors [projector] shall be capable of producing a tone between 250 and 320 Hz with a decibel rating of 120db at 10 feet.
COMPRESSOR UNIT: Compressor motor shall be 1 HP, 120V, 60 Hz, 10.4 FLA. Compressor shall be a weatherproof, rapid response, direct drive piston type compressor. Piston and cylinder shall be an oil-less, non-lubricated type, with a Teflon compound piston ring. Compressor valves shall be stainless steel. Bearings shall be permanently sealed, pre-lubricated ball type, requiring no maintenance. All components and fasteners shall be corrosion resistant.
MOUNTING: The standard air horn assembly shall be a single unit comprised of compressor and horns and shall be suitable for outdoor mounting.
FIELD CONNECTIONS: The electrical contractor shall also provide a pushbutton or similar control device at the control station for operation of the air horn.
This lamp features an array of LEDs with a rated MTBF of 100,000 hours (over 11 years when burned 24 hours per day). Brightness is similar to a 75W incandescent lamp while power consumption is extremely low at only 8 watts. Savings on maintenance and power are the most common reasons for choosing an LED lamp. This lamp features state-of-the-art high-intensity individual LEDs for maximum light output and a standard medium base, making it suitable for direct replacement and upgrade of standard incandescent 120V lamps. LED technology is inherently shock and vibration resistant, making LED lamps an excellent choice for navigational lighting fixtures.
GENERAL CONSTRUCTION: Lamp shall consist of a dense array of individual LEDs, each encased in a solid clear epoxy lens per industry standards. In the event of failure of one or more individual LEDs, remaining LEDs shall continue to operate. Entire assembly shall be neatly potted into a molded non-metallic stem fitted to a standard medium base.
POWER REQUIREMENT: Lamp shall designed for 120V operation and shall consume approximately 8W.
LIGHT OUTPUT: Overall luminosity of the LED array shall be approximately 840 candelas for both red and green arrays (similar visibility to a 75W incandescent lamp). Beam viewing angle shall be approximately 22 degrees for red and 20 degrees for green.
COLOR: Lamp color shall match the color of the fixture lens for maximum light output. Red LEDs shall have a wavelength of approximately 630nm. Green (“marine” green or blue-green) LEDs shall have a wavelength of approximately 510-515nm.
LAMP LIFE AND MAINTENANCE: Individual LEDs shall have a MTBF rating of 100,000 hours. Scheduled lamp replacement is suggested at 10-12 year intervals if operated using a photocell or 5-6 year intervals if operated 24 hours per day.
RECEPTACLE and MOUNTING (Navigational Light Mounting): Medium base receptacles shall be rated for 250V, 660W and shall be porcelain with a nickel-plated brass shell to resist lamp freezing. Lamp mounting shall center the array on the focal plane of the lens. Receptacles shall be mounted on a bracket, which shall be isolated from the navigation light fixture with rubber grommets to minimize shock and vibration. Mounting bracket shall position the center of the lamp at the focal plane of the fixture lens for optimal light transmission.
OPTION: SILICON SEALED: When specified, each completely assembled lamp shall be dipped in clear silicon to provide a moisture barrier.
PART NUMBERS: Part numbers shall be PLP-LED120R for red and PLP-LED120BG for green. For silicon-dipped lamps, part numbers shall be PLP-LED120R/S and PLP-LED120BG/S.