Master-Lee would like to introduce the brightest “drop-style” LED light on the market, the Helios 75K™. Designed to be as powerful as a large floodlight but compact and rugged enough to play the role of an area drop light, the Helios 75K™ shines brightly in any environment. In-air or underwater, this dimmable LED light offers more than enough light for illuminating large areas.
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Providing up to 78,000 lumens of dispersed, white light using the latest in LED technology, the Helios 75K™ is best suited for lighting large underwater areas, such as reactor cores and spent fuel pools, or in-air areas such as refueling cavities. The Helios 75K™ has been engineered to be compact, lightweight, rugged, yet versatile to be quickly deployed to nearly any working environment underwater or in open air to compete with it’s big brother, the Helios 100K™ Floodlight, for center stage. Designed to operate at depths to 150-ft and within close proximity to irradiated fuel assemblies, the Helios 75K™ is the ideal solution to illuminate reactor cores for video inspections or fuel movement. Such a high light output gives our customers the flexibility to do more with less, as the Helios 75K™ can provide the illumination of two or more traditional (tungsten/quartz halogen) lights. This not only reduces the amount of required electrical outlets, as two Helios 75K™ lights operate on one 15-Amp circuit, but also the amount of time spent positioning lights within the core is reduced. Additionally, incorporating LED lighting technology provides thousands of maintenance-free operating hours, reducing your re-lamp, installation, and removal times.
With the capacity to produce up to 78,000 lumens of crisp, bright light there comes a point where changing conditions necessitate adaptation and that level of intense lighting can become overwhelming and counterproductive. Fully dimmable from 100% output to 10% power gives the end user total control allowing the light to perform exactly as needed. If it’s not the user adjusting light output based on conditions, it’s the conditions adjusting light output. The Helios 75K™ incorporates a unique safety feature, Auto-Dimming, to protect itself from thermal overload. When the Helios 75K™ is removed from water, its primary cooling medium, its operating temperature begins to rise. As this occurs, it senses the temperature increase and begins to lower its light output to maintain a safe operating level. In the warmest of open-air working environments, the Helios 75K™ will effectively and safely cool itself through natural convection, operating down to 50% power levels if required. When conditions require fine control over light output, the end user can adjust this via a dimmer knob located on the Power Console.
Constructed of aluminum and finished with hard anodize, the Helios 75K™ weighs under 15 pounds (5 pounds in water) for easy, manual installation/removal. With the detachable cord secured to the light head with strain relief cord grips, the light is designed to hang from its cable in nearly any industrial environment. The Helios 75K™ System includes (1) Light Assembly w/ strain relief cord grip, (1) Power Console, (1) 75′ removable power cord, and (1) lens replacement kit. Operating on standard 110-VAC or 220-VAC (DC input voltage is an available option) and drawing under 7-Amps adds to the portability and permits multiple lights to be configured on one electrical circuit.
|Light output||Up to 78,000 lumens|
|Light color||5000K (white light)|
|Radiation tolerance||No limit (Lens needs monitoring w/ very high doses)|
|LED Life||50,000 hours (> 70% lumen output)|
|Dimming||100-10% manual; 100-50% auto|
|Materials||Anodized aluminum; polycarbonate (lens)|
|Operating temp (°F)||165 (maximum, in-air); ~135 (in water)|
|LED Efficacy (@85C)||152 lumens/watt|
|Warranty||2-Year; Limited; Parts replacement|
|Operating voltage||100-240 VAC input|
|Operating current||Up to 7.0 Amps|
|Depth rating||Up to 150-feet|
|Assembled weight||15 lb (Light head)|
|Light Panel Size||10″ Diameter x 3.5″ High|
|Light head positions||Vertical (0-deg)|
|Cord||75-ft, detachable, bronze fittings|
|Protection|| Thermal Overload; Short Circuit,
Over Voltage; Fuse Protection
|LED Flux (@85C)||70,900 lumens|
|Part Image||Part Description||EPI Part No.|
|Helios 75K™ System, includes:
– (1) Power Console
– (1) Helios 75K™ Light Head
– (1) 75-ft detachable power cord w/ strain relief
– (1) Lens Replacement Kit
|Replacement Parts (Sold Individually)|
|Helios 75K™ Light Head||D3184|
|Helios 75K™ Power Console w/ AC power cord||D3189|
|Helios 75K™ Cable – 75-ft w/ strain relief||D3188|
|Helios 75K™ Lens Replacement Kit, includes:
– (1) Polycarbonate Lens (P/N: C3187)
– (1) O-Ring
– (1) 1-oz pack of Molykote lubricant