General Lighting

LEDs in Extreme Applications

by  | Apr 20, 2019 | LED |

Some facilities have extreme circumstances where typical LED lighting may not meet the special needs.  There are various requirements such as high temperature, hazardous locations, food processing, and extreme outdoor.

  • High Temperature High Bay and Flood Light Requirements – up to 190 Degrees Fahrenheit
  • Explosion Proof High-Bay and Flood Light Requirements – C1D1 and C1D2
  • Food Processing High-Bay Light Requirements – NSF Certified
  • Extreme Outdoor High-Mast Light Requirements – IP67 and Salt Spray

High Ambient Temperature Areas 

Harsh areas that generate heat – like power generation plants, oil rigs, and steel foundries– may have ambient temperatures near the lights of 190 degrees Fahrenheit.  Most LED products work well in temperatures up to 130°F to 140°F.  When selecting the lighting for these areas, one need to take this into consideration.  High temperatures require specialized, custom-designed fixtures to extend the life of the fixture thereby reducing maintenance costs and providing reliable lighting. Hubbell, Killark, Chalmit, Cortem are some brands that cater to such needs. 

Hazardous Locations

Some industrial environments require special LEDs because it can be dangerous if a light explodes. Environments where explosive concentrations of dust or vapors may exist must be equipped with special lighting for safety purposes.  Hazardous industrial facilities can include:

  • Oil refineries/offshore oil platforms
  • Chemical plants
  • Gas stations, pumping stations, substations
  • Waste water treatment plants
  • Paint facilities, coal mining
  • Military bases, weapons storage
  • Tunnels or airports

Hubbell, Killark do have fixtures in C1D2, C1D2 with proper UL certificatation to cater to these Hazardous areas. 

Extreme Outdoor Requirements

Seaports and off-shore drilling platforms are unique applications when it comes to lighting.  The corrosive nature of the salt air can affect the lighting natural performace.  Therefore, one should consider reputable brands like Hubbell lighting and Killark to provide the high quality lighting for your projects. Hubbell lighting do o pole-mount LED high mast, which comes with proper IP67 protection,  and certications for marine grade products.

Whether you are replacing lighting in a hazardous location, a high temperature power plant, in a food processing plant or are by the ocean, do speak to us and we can offer our Hubbell LED lighting to suit your needs.


 

Explosion Proof LED Lighting

Most modern explosion proof lighting includes LED technology that reduces cost and improves the durability of the lighting fixture in a hazardous lighting location. Unlike standard industrial LED lighting fixtures, explosion proof LED lighting will have stronger frame and housings and thicker, tempered glass lenses. Any internal electrical systems that might produce sparks will be more tightly contained to separate any sparks from flammable vapors, dusts, or fibers in the environment. The objective standards for rating explosion proof lighting will indicate exactly what type of hazardous lighting location will match a specific fixture.

For example, an explosion proof LED highbay or floodlight with a Class 1 Div 1 designation will be safe for installation in an environment with flammable vapors that are frequently or periodically present in the atmosphere around the fixture. A Class I Division 2 lighting highbay or floodlight will be safe for installation in areas where vaporous substances are held or transported in storage vessels but are not necessarily in the atmosphere.

Because of the risks associated with making an incorrect or improper choice of an explosion proof LED lighting fixture, designers and facilities managers should consult with lighting experts who know and understand those risks and who can recommend the correct fixtures and systems for each environment. We Duallite Electric Pte Ltd, do have a team of trained experienced engineers and staff whom will be able to provide you our expertise and inputs to support your projects or technical queries. We represent major brands in the market, mainly Hubbell Lighting, Killark, Chalmit, Coterm and Stahl, just to name a few. These brands do have a compreshesive range of ex-proof LED lighting such as highbays, floodlights, incandesent lighting and linear exproof lighting. 


 

HID Fixtures

by  | Sep 17, 2019 

What is a HID Fixture?

A HID fixture is a lighting device that consists of a fixture, a HID bulb, a ballast, reflectors and a mount. HID is an acronym for High Intensity Discharge, and applies to a family of high lumen bulbs. Mercury Vapor, Metal Halide. Ceramics, Sodium Vapor and Xenon based bulbs are all considered to be HID bulbs. All HID bulbs need a ballast that converts AC line power into energy used to power the HID bulb.

The bulbs are omni-directional in nature, and they create light in all directions. To focus HID lights, adding reflectors and lenses to the fixture to direct the light where its needed. HID bulbs are very bright, but required a long strike time to produce greatest levels of light. If you switch off a fixture, the amount of time it takes to re-cycle the fixture is considerable. The two most common HID bulbs are metal halide bulbs and sodium vapor bulbs. Both bulbs are distinctive. Sodium bulbs are orange in color, metal halide are whiter.

Applications for HID Fixtures

HID fixtures are for high lumen applications. Indoor applications like gymnasiums, warehouses, bay fixtures, recessed lights and factory lights. Outdoor applications include parking lots, stadiums, street lights and area lights. HID bulbs come in a variety of wattages for different applications.

  • Large fixtures with high wattage bulbs use 1000W, 1500W and 2000W HID bulbs. 
  • Smaller bulbs used in bay fixtures and parking lit lights use 250W and 400W bulbs.
  • Smaller wall mounted fixtures with less lighting requirements, 100W and 150W bulbs.

Life of a HID bulb

 HID bulbs have different lifespans, between 12,00 hours to 20,000 hours. During this lifespan, light out degrades with the age of the bulb. It is not uncommon that after 1/2 life of the bulb, the HID bulb has lost over 50% of its effective lumens. A bulb that has used 80% of its life is only producing 20% of its initial lumens. Thus, it is not uncommon to replace bulbs well before complete End of Life. A phenomenon associated with HID lamp wear and aging is discoloration of the light. In whiter based HID bulbs, this means the shift is to a blue or violet shade.

Converting HID Fixtures over to LED

So why are users of HID Fixtures converting to LED? When LED was in its infancy 11 years ago, LED barely produced enough light to replace HID bulbs. LED was inefficient, and expensive. Today, LEDs have matured, and mass production has brought down the cost of the product. LED options now produce enough lumens to compete against their HID counterparts. LED offer several advantages over the HID fixtures.

  • LED is energy efficient, using 25% of the energy that a HID bulb uses to produce the same amount of lumens.
  • LED’s life spans are longer than HID bulbs. A 20,000 hour HID bulb has a L50 of 10,000 hours. Some LED fixtures currently have a L70 exceeding 100,000 hours.
  • The purity of LED light is better than HID lighting. Some metal halide bulbs have a high Color Rendering Index (CRI), but most LED products have a high CRI. Sodium Vapor bulbs have a horrible CRI.

Replacing HID fixtures or Retrofitting HID Fixtures

There are 2 options that are available converting HID to LED: replace or retrofit. Replacement means removing the fixture and a installing a new LED fixture. Retrofit is removing HID components from the fixture and replacing with LED components. Both options have pros and cons. Which one to use depends on circumstances unique to the fixture and installation.

LED Kits for HID Fixtures are a series of 11 kits designed to replace all HID bulbs ranging from 150W to 1500W. HID Retrofit Kits are a certified retrofit solution. As part of the installation process, remove the reflector as it is not required. Expect energy savings around 75% over their HID counterparts. Life span should exceed 10+ years under normal operating conditions.