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Industry can be more competitive and environmentally effective today by dramatically reducing the costs and electricity consumption associated with the operation of lighting. By simply retrofitting or replacing antiquated magnetic High-Intensity Discharge (HID) lighting systems with high performance energy efficient Digital HID™ (DHID™) lighting, the end user can yield an immediate 40% or 50% savings in energy while still maintaining equivalent light levels. Introducing dimming allows for 75% or more in additional energy savings. Money savings due to reduced electricity expenses allow the payback of the DHID™ lighting solution to be really short, and with minimal maintenance and consumable expenses incurred over the long term.

Application Examples

Factory/Warehouse High-Bay & Outside Area/Parking Lighting (Industrial/Commercial/Retail):

TRW Automotive – Tier-One Automotive Parts Manufacturing Plants –

  • Retrofitted existing 400W MH and HPS fixtures utilizing core and coil (magnetic) ballasts with GloGreen DHID™ 250W retrofit digital ballasts. Installed new 250W Pulse Start MH lamps.
  • The upgrade installation resulted in significant energy savings and greatly increased lumen levels in the areas.
  • Reduced over-all maintenance/consumable costs; DHID™ is best choice for installation environments where dust/debris or oil mist are present, and for installs where lamps are not easily accessible.
  • Total direct savings: 195Watts/hr per fixture (42% savings); calculations including magnetic ballast energy losses (approx. 15%).

H.J. Heinz Company – Food Manufacturing Plants –

  • Replaced existing 320W MH fixtures utilizing core and coil (magnetic) ballasts with dimmable DHID™ 150W digital ballast fixtures (CMH lamp).
  • Measured Lux (lx) at the ground before and after installation (mounting height of 26ft.); old 320W MH produced 120lx – New DHID™ 150W produced 455lx (i.e. a most significant 73.7% improvement in light quality/brightness at the ground for over half the electricity consumed)
  • Reduced over-all maintenance/consumable costs since DHID™ powered lamps do not degrade in light quality or brightness the entire extended life of the HID bulb.
  • Total direct savings: 218Watts/hr per fixture (59% savings); calculations including magnetic ballast energy losses (approx. 15%).

McCain Foods Limited – Food Manufacturing Plants –

  • Retrofitted existing 400W MH fixtures utilizing core and coil (magnetic) ballasts with GloGreen DHID™ 250W retrofit digital ballasts. Installed new 250W Pulse Start MH lamps.
  • Installed Dimmable DHID™ ballasts in warehouse/storage areas, triggered by motion/heat sensors. Instant dimming from 250W to 125W (50%) in one-step.
  • Really short term return on investment (ROI) justified by the low buying and install cost (re-using McCain’s existing water-proof fixtures) and long term high performance of DHID™ lighting. DHID™ solution was favoured over LED, Fluorescent and Induction lighting.
  • Total direct savings: 223Watts/hr per fixture (45% savings); warehouse/storage areas where dimming is utilized yields 355.5Watts/hr savings per fixture (72% savings); calculations including magnetic ballast energy losses (approx. 22%).
PSION Inc. – Electronics Manufacturing Plant – 

  • Externally retrofitted the existing 400W MH high bay fixtures utilizing core and coil (magnetic) ballasts with GloGreen DHID™ 250W retrofit digital ballasts.
  • Internally retrofitted existing 250W MH parking lot luminaires with 150W DHID™ ballast; and old 100W-150W Wall pack/Signage lighting upgraded to 50W-100W DHID™.
  • Installed new Pulse Start MH lamps in each case. The upgrade installation resulted in instant energy savings and increased lighting levels in all areas.
  • Really short term return on investment (ROI) justified by the low buying cost and long term high performance of DHID™ lighting. PSION qualified for local power utility rebate incentive making ROI approximately one (1) year.
  • Total direct savings: 207Watts/hr per high bay fixture (43% savings); over-all application project energy savings approximately 42%.

Arena/Sports Facility Lighting Applications:

Richmond Oval – Olympic Speed Skating, Ice Hockey, Sports Arena –

  • Retrofitted existing 1000W MH fixtures utilizing core and coil (magnetic) ballasts with Analog Dimmable DHID™ 750W digital retrofit ballasts. Installed new 750W Pulse Start MH lamps.
  • Retrofitted existing 400W MH fixtures utilizing core and coil (magnetic) ballasts with 250W digital retrofit ballasts. Installed new 250W Pulse Start MH lamps.
  • Immediate increase in energy savings and improvement in facility light quality and brightness at the ice surface and over viewing areas.
  • End-user is able to dim the 750W fixture to the desired power setting; from 750W to 375W (50% dimming), and is able to turn the lamps off remotely (Analog 0-10VDC input DHID™ ballast).
  • Total direct savings for 1000W magnetic retrofit: 441Watts/hr per fixture (36% savings); customer can dim down to 375W for up to 68% energy savings; calculations including magnetic ballast energy losses (approx. 20%).
  • Total direct savings for 400W magnetic retrofit: 195Watts/hr per fixture (42% savings); calculations including magnetic ballast energy losses (approx. 15%).

Airport Lighting Applications:

Air Canada – Toronto Pearson International Airport –

  • Replaced existing 400W MH fixtures utilizing core and coil (magnetic) ballasts with dimmable 200/250W Digital HID™ ballast fixtures. Installed new 200W Pulse Start MH lamps.
  • Install yielded an instant energy savings of 53% per fixture, and lighting levels in the areas were increased.
  • Total direct savings: 246Watts/hr per fixture with DHID™ 200W setting (214 input power); calculations including magnetic ballast energy losses (approx. 15%).

Automotive Dealership/Retail Parking Lot Lighting Applications:

  • Retrofitting existing HID lamp fixtures is cost-effective and improves over-all lighting performance, with substantial 40%+ instant energy savings.
  • Leading Automotive dealerships (Ford, Hyundai, Suzuki, Nissan) already realize the benefits of DHID™ retrofits today; and new installation projects benefit with high efficiency GloGreen DHID™ high bay showroom and shop fixtures.
  • ‘Automatic’ dimming, or pre-programmed dimming modes add great value to your parking lot project; reducing/dimming lighting levels during off-peak traffic hours, e.g. after midnight, provides ‘supplemental’ energy savings up to 50%, reducing your existing energy consumption by over 70%!
  • High Energy Efficiency, Long Term Performance, Low Waste, and a Low Buying Cost = Best Lighting Value.

Greenhouse/Hydroponic Lighting Applications:

  • Retrofit/Replace existing inefficient electronic or core and coil (magnetic) 400W, 600W, and 1000W HID ballasts utilizing MH or HPS bulbs with GloGreen DHID™ 200/250W, 400W, 575W, 600W, and 750W Digital HID™ ballasts.
  • Or Retrofit/Replace existing magnetic 1000W to 2000W MH or HPS fixtures with 1000W digital ballasts to reduce energy consumption and increase plant growth yields in a shorter timeframe.
  • Greenhouse and Hydroponic operators can now maximize the return on their lighting investment and profitability due to the higher energy and electrical efficiency of the Digital HID™ ballast.
  • Low cost of investment including reduced maintenance/consumable expenses make DHID™ the most financially viable lighting solution for greenhouse operators today. The DHID™ ballast is 97% efficient and HID bulbs operated by the DHID™ ballast suffer no greater than 5% light degradation over the entire lifespan of the bulb (95% lumen maintenance).
  • Return on investment; at $0.10/kWhr, a DHID™ 575W ballast replacing an existing magnetic 1000W ballast operated 18 hours per day, 365 days a year is paid back in less than 6 months.
  • Total direct savings: 591Watts/hr per fixture (49% savings); or operator can use DHID™ 1000W to increase plant growth yields/reduce grow time for less electricity expense than their existing magnetic based 1000W MH or HPS HID lighting system.

Simple Dimming Applications:

  • GloGreen Digital HID™ Ballasts are available with dimming capabilities already built in; by dimming 50% of incoming power, additional electricity savings are realized.
  • Motion sensor, or Programmable Logic Controller (PLC) dimming via Analog 0-10VDC input.
  • On-board pre-programmed schedule dimming allows you to select the dimming time period based on a daily schedule.
  • Simple dimming makes sense, especially for parking lots, public park areas, pathways, warehouses, and indoor/outdoor sport facilities.

Digital HID™ Product Benefits and Specifications:

  • Significant (up to 75%) saving of electrical energy and maintenance costs.
  • Produces up to 40% or more lumens/Watt than core-and-coil (magnetic) ballasts without losses.
  • Steady 95% lumen maintenance over life cycle of lamp (only 5% degradation over entire bulb lifetime, no relamping required).
  • Increased life expectancy (100%) of the lamp compared to core-and-coil (magnetic) ballast technology
  • Highest efficiency ballast on the market; 97% efficient Digital HID™ ballast produces minimal heat
  • Possible 50% dimming of incoming power yields dramatic cost savings
  • Multiple dim modes: motion sensor/PLC dimming with Analog 0-10VDC signal; onboard/pre-programmed dimming.
  • Virtually no loss of electrical energy; Watts consumed = Watts produced
  • Conventional core-and-coil (magnetic) ballasts create significant heat and operate at 15-25% losses in terms of Watts consumed and Watts produced.
  • Very easy retrofit installations for MH, CMH and HPS lamps
  • Advanced design, fully silicon potted ballast is light in weight and compact in size

DHID™ Vs. LED; Myths and Facts:

When considering your lighting application solution, it is prudent to educate yourself on the available lighting types on the market today. Given the recent surge of promotion and the popularity of LED lighting, many consumers assume LED to be the solve-all for every lighting application. Although LED technology meets and exceeds the standards for many applications, one should be careful when considering LED for applications where light projection or penetration is important; i.e. applications where the light source is mounted at long distances from the target, as in Street Lighting, High-bay Warehouse, Sports Arena, Airport and Greenhouse lighting for example.

Facts about LED’s
  • LED’s present many advantages over traditional light sources including lower energy consumption, longer lifetime, improved robustness, smaller size and faster switching. However, they are relatively expensive and require more precise current and heat management than traditional light sources.
  • It should be noted that high-power (=1W) LED’s are necessary for practical general lighting applications. Typical operating currents for these devices begin at 350 mA.
  • One of the highest efficiency ratings of high-power white LED’s is claimed by Philips Lumileds Lighting Co., with a luminous efficacy of 115 lm/W (350 mA). Please note that these efficiencies are for the LED chip only, held at low temperature in a lab. In a lighting application, operating at higher temperature and with drive circuit losses, efficiencies are much lower.
  • Independent testing of commercial LED lamps designed to replace incandescent or CFL lamps showed that average efficacy was about 31 lm/W in 2008 and tested performance ranged from 4 lm/W to 62 lm/W) compared with 100-116 lm/W of DHID™ lighting systems.
  • Solid state devices such as LED’s are subject to very limited wear and tear if operated at low currents and at low temperatures. Many of the LED’s produced in the 1970s and 1980s are still in service today. Typical lifetimes quoted are 25,000 to 100,000 hours but heat and current settings can extend or shorten this time significantly.

As a leader and one source supplier of advanced lighting systems for commercial and industrial lighting applications, including DHID™ and specific LED lighting products, Accendo Electronics has studied and field tested both LED and the next generation Digital Ballast powered HID (called Digital HID™ or DHID™) technologies for applications requiring long light penetration and retained light quality over extended time periods. In our research, we uncovered key myths and facts about LED’s you should consider when deciding on your project lighting.

Myth: LED Lighting Life Expectancy is 100,000 Hours Plus
  • False! Manufacturers claim mean time before failure (MTBF) ratings on LED’s to be 50,000 hours to 100,000 hours or more. Although in cases LED’s do meet these extended MTBF specifications, this number must be directly correlated to the LED application itself. Factors such as mounting distance, the lumens per Watt (lm/W) rating, and operating temperature all contribute to the reduction of the LED’s MTBF. Realistically, LED’s used for street lighting, or high-bay warehouse applications for example, may be considered to be failed at 30,000 hours or sooner due to the significant light diminishment incurred in the time stages of the LED’s operation.
  • The most common symptom of LED (and diode laser) failure is the gradual lowering of light output and loss of efficiency. Sudden failures, although rare, can occur as well. Early red LED’s were notable for their short lifetime. With the development of high power LED’s, the devices are subjected to higher junction temperatures and higher current densities than traditional devices. This causes stress on the material and may cause early light output degradation. To quantitatively classify lifetime in a standardized manner it has been suggested to use the terms L75 and L50 which is the time it will take a given LED to reach 75% and 50% light output respectively. L50 is equivalent to the half-life of the LED.
  • The LED light quality diminishes or dims over the operating lifetime of the LED bulb. This degradation in light should be considered when reviewing the MTBF of LED’s since the light emitted at the LED’s life start is not equal to the light emitted at the bulbs half-life or life-end. If the LED bulb cannot produce the light output originally specified, it is a form of failure.
  • Over time, heat created by LED’s also has an adverse effect on the systems light quality and MTBF. Depending on the class of the LED bulb used, factors such as powder coating (filter) degradation and the material used to manufacture the LED lens, further add to the truism that LED’s do not necessarily meet their manufacturer’s specified MTBF ratings and lighting quality claims.
  • DHID™ equals or outperforms the longevity of LED in most industrial and commercial applications at lower costs. The integrated microprocessor of the DHID™ doubles the life expectancy of the HID lamp by maintaining full level of illumination up to 28,000 – 40,000 hours and beyond when smart dimming is utilized.
  • Studies have proven that DHID™ used as a direct replacement and mounted at the same distance as the original HID lighting, outperforms LED in many quantifiable measurements of energy efficiency and light penetration. DHID™ offers a market leading lumens per Watt rating of 116lm/W+ (which is 25% – 30% above LED’s lm/W rating) and therefore delivers higher energy efficiency, greater light penetration, and quality light over the entire 40,000+ hours MTBF; and all for a fraction of the cost of LED.
Myth: LED’s Project/Penetrate Light at Long Distances
  • False! Our studies proved that LED’s are not well suited for projecting light efficiently at distances exceeding 15ft (4.5m approx.).
  • At a typical street light height mounting distance of approximately 32.8ft (10m), the foot-candle (fc) measurements of the light emitted from both LED and DHID™ were recorded at the ground:
    • 100W LED street light produced 0.75 foot-candles
    • 70W DHID™ with a 70W Ceramic Metal Halide (CMH) lamp produced 1.75 foot-candles
  • For street lighting applications the high lumens per Watt rating of DHID™ provides the best value delivering higher energy efficiency, greater light penetration, and quality of light over time.
Where to Use LED Fixtures:
  • Industrial and commercial applications where useful light penetration would not exceed 7 – 8 meters such as commercial room lighting, exit signs, target illumination in retail stores and others.
  • Flash lights, and other utility lighting.
  • Instrument panel lights and other back lighting applications.
  • Industrial and architectural back lighting, and other decorative applications.

Please visit Accendo Electronics Blog for full articles: DHID (Digital HID) Vs. LED; Myths and Facts

Why is DHID™ Preferred for Street/Highway/Parking Lot Lighting and High-Bay Lighting Projects?

When selecting a lighting system, significant consideration should be given to the performance, cost, and life expectancy of all possible solutions. LED, fluorescent and induction lighting have poorer lumens per Watt ratings, higher initial buying prices and inherently suffer light quality and penetration degradation; whereas DHID™’s high performance light output, low initial buying cost, and low maintenance/consumable costs over the long term offer your project a shorter and better return on lighting investment value.

  • Progressively thinking end-users agree that DHID™ is the more robust lighting solution with value added benefits not offered by LED, fluorescent or induction; Multiple Bulb Capability, Smart Dimming, 116+lm/W, 97% efficiency, and 95% lumen maintenance ensure application flexibility and optimal energy and lighting performance over the long term.
  • DHID™ is the environmentally responsible lighting solution, reuse your existing lighting fixture; reduce waste and reduce your over-all project costs.
  • With MH, CMH or HPS lamps, the end-user can expect brighter penetrating light at the ground, with 40,000 hours or more of life expectancy and less than 5% degradation in light quality/brightness over the lifetime of the bulb (95% lumen maintenance).
  • When a DHID™ system HID bulb fails, only one inexpensive bulb needs to be replaced; making DHID™ lighting the most cost-effective and environmentally friendly alternative to the more expensive labour/maintenance, consumable cost and waste inevitabilities of alternative lighting technologies. With DHID™, relamping is no longer required since originally specified light levels will always remain constant throughout the entire lifespan of the HID bulb.

Performance is further enhanced today with the release of Long Life HID lamp sources designed specifically for DHID™ ballasts; lumen maintenance is further enhanced, and life expectancies for HPS lamps now exceed beyond 70,000hrs, and for MH lamps beyond 40,000hrs with no visible light degradation throughout the entire lifetime of the lamp. Please visit for additional information on their advanced HPS and MH Long Lifetime Lamp products.

DHID™ offers the most cost-effective, value added alternative to LED, fluorescent and induction based lighting technologies for new and retrofit industrial and commercial Green lighting projects. For a direct comparison between Digital HID™, Magnetic HID, Fluorescent, Induction and LED for Street Lighting, please download the competitive comparison document here: Accendo-GloGreen-Digital-HID-DHID-Vs-Magnetic-HID-Vs-Fluorescent-Vs-Induction-Vs-LED-Comparison-Chart.pdf.

Please download the following application benefits sheets highlighting Street Lighting, Highway High Mast Lighting, Industrial/Commercial and Automotive Dealership DHID™ lighting solutions:

We welcome the opportunity to discuss our findings with you further. Accendo Electronics is committed to the success of your lighting application; for additional information, or to arrange your Risk Free Trial please Contact Us.


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