Standard LED System Specifications
Board and driver integrated LED assemblies available standard and covered by Crenshaw’s full five-year electrical warranty. 3000K, >80 CRI standard unless otherwise noted.
|System||For||Lumens||Watts*||Max Amps||Rated Life †||Controls||LED Manuf.|
|12LED [pdf]||26-32″ high pendants||17,300 lum||170W||3.0A||50,000 hr||0-10V||Philips, Bridgelux|
|12LED-PC [pdf]||26-32″ high pendants||16,900 lum||166W||2.2A||50,000 hr||phase control (LE)||Philips, Bridgelux|
|18LED [pdf]||37-43″ high pendants||23,000 lum||210W||4.0A||50,000 hr||0-10V||Philips, Bridgelux|
|12LED (non-dim) [pdf]||26-32″ high pendants||16,000 lum||158W||2.6A||50,000 hr||non-dimming ‡||Philips, Bridgelux|
|18LED (non-dim) [pdf]||37-43″ high pendants||21,800 lum||198W||3.6A||50,000 hr||non-dimming ‡||Philips, Bridgelux|
|CLED-3000 [pdf]||16-20″ dia ceiling drums||3,000 lum||42W||0.7A||36,000 hr||0-10V||Fulham|
|CLED-3000-1% [pdf]||16-20″ dia ceiling drums||3,000 lum||42W||0.7A||36,000 hr||1% 0-10V||Fulham|
|CLED-3000-PC [pdf]||16-20″ dia ceiling drums||3,000 lum||42W||1.05A||36,000 hr||phase control (LE)||Fulham|
|CLED-3000-L3 [pdf]||16-20″ dia ceiling drums||3,000 lum||42W||1.05A||36,000 hr||Lutron 3-wire or EcoSystem 1%||Fulham|
|CLED-4000 in development||20-24″ dia ceiling drums||4,100 lum ±||58W ±||tba||36,000 hr ±||0-10V||tba|
|STACK-LED-100||100″ long stack light, recessed driver.||9,600 lum||112W||1.0A||50,000 hr||0-10V||Fulham|
|WLED-1800||18-20″ h ADA half-hex sconce, other body styles in development||1,800 lum||28W||0.7A||36,000 hr||phase control (LE)||Fulham|
|WLED-1800-1%||18-20″ h ADA half-hex sconce, other body styles in development||1,800 lum||28W||0.7A||36,000 hr||1% 0-10V||Fulham|
|WLED-2800||20-24″ h half-hex sconce, other body styles in development.||2,800 lum||42W||1.05A||36,000 hr||0-10V||Fulham|
|XWET-1300||Wet location top hat lanterns (wall bracket, post, stem pendant)||1,250 lum||18W||0.26A||50,000 hr||0-10V||Xicato|
Note: Due to continuous improvements and innovations, specifications may change without notice.
* Indicates input operating wattages. Max amperage labels may exceed input wattages due to UL safety margins in labeling requirements. See Max Amps for labeled amperage rating.
† Rated life is based on L70, or 70% initial lumen output.
‡ Dimming is strongly recommended for optimizing light levels, prolonging LED lamp life, and is standard for all Crenshaw LED systems unless otherwise specified.
Crenshaw does not specify lighting controls. We encourage clients to employ the services of a qualified controls expert to configure advanced plans, and in every case refer clients to controls manufacturers for installation and specification information for switches, panels, and other controls systems. To assist with this, we provide wiring diagrams for most standard dimming protocols. While most of our wiring diagrams provide specific controller information, this information is offered only as a guideline which may be used to source an equal or alternate type of controller. Crenshaw can also offer significant design assistance in engineering LED lighting that will work with clients’ controls plans. Call Crenshaw 540.745.3900 or email sales @crenshawlighting.com for more information.
0-10V dimming is the most widely used dimming protocol for integrated board and driver LED systems. Other sophisticated controls systems, such as DALI, are available and sometimes used, however 0-10V dimming has become the industry standard for LED. Unlike incandescent or Crenshaw’s standard compact fluorescent dimming configurations, 0-10V controls require two additional wires beyond the standard hot, neutral and ground wires used throughout traditional electrical wiring. Existing construction rarely has the extra wiring, and this factor can become a significant obstacle for churches and commercial spaces looking to upgrade their lighting to state-of-the-art solid state LED. For these scenarios, Crenshaw has developed a phase controlled dimming option for some standard LED systems. See below.
Phase Control dimming
Phase Control provides a two-wire LED dimming solution that works with traditional electrical wiring. While this technology lacks the sophisticated features and superior performance available with 0-10V dimming, the ability to use existing wiring makes phase control an appealing option. Forward phase control (LE), variously known as leading edge, triac, and incandescent dimming is standard. Please note that specialty dimmer switches are required. Please contact Crenshaw for more information 540.745.3900 sales @crenshawlighting.com.
3-wire & Lutron EcoSystem dimming
3-wire dimming, most often applicable for retrofitting into existing 3-wire fluorescent dimming systems, is available for some configurations, including standard ceiling drums, and certain kinds of custom configurations.
Lutron EcoSystem dimming, which offers impressive performance (including 1% dimming in many cases) and a wide range of sophisticated controls options, is available in some standard products, and in a wide range of custom configurations. For more information, contact Crenshaw 540.745.3900 sales @crenshawlighting.com.
Color Temperature (CCT)
Color temperature is used in lighting to describe the hue of a white light source. This can vary quite widely across lamp technologies, and is typically defined in degrees Kelvin. In practical terms, warm white light, most often used in residential and commercial settings where relaxed ambient lighting is desired, is normally defined by color temperatures of 2400-2700K. Traditional incandescent lamping typically falls within this color temperature range and is known for it’s yellowish hue. As contemporary lighting design has leaned toward clean, bright lighting plans, 3000K-3500K has become the new standard in decorative lighting. These are considered warm or neutral white, and lack the yellowish hue of 2700K. All of Crenshaw’s standard LED systems are specified at 3000K. 4100K is often defined as cool white, and most often seen in commercial or workspace applications where productivity and alertness are desired. 5000K-6000K are described as cold white and most often employed in utility applications. They have a bluish cast, and are typically associated with high output, long life lamp sources.
Color Rendering (CRI)
Color rendering refers to the ability of a light source to illuminate an object’s true color, and is independent of color temperature. Sunlight color rendering is the reference standard, and as can be observed, spans the spectrum from extremely warm (1800K at sunset) to extremely cold (8000K in deep shade). All other light sources are ranked in comparison along a scale which measures 100 CRI as perfect color rendering. Incandescent and halogen lamps are typically accepted as exhibiting 100 CRI or close to it. Some fluorescent lamps perform below 70 CRI. Certain long-life utility lamping such as high-pressure sodium can exhibit CRI’s below 30. This effect can be seen most readily in greenish skin hues under low-quality fluorescent lighting, or the loss of color differentiation under some utility lighting. Artists, photographers, product display designers, and museum curators are all acutely aware of the importance of color rendering.
The standard color rendering scale, which most published CRI specifications reference, measures only a selection of colors. Other more exacting scales add ranges of the color spectrum for a more complete picture of light quality. Leaders in museum LED lighting technology such as Xicato are working closely with this aspect of color rendering performance.