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Questions and Answers
What does 'Em' represent in the planning data?
What does 'Em' represent in the planning data?
- Room index value
- Maintained value of illuminance (correct)
- Illuminance taken from the Guide values table
- Connected load of one luminaire
Which variable describes the connected load per unit area?
Which variable describes the connected load per unit area?
- f
- P* (W/m2) (correct)
- P (W)
- n (1/100 m2)
What is the appropriate correction factor 'f' used for?
What is the appropriate correction factor 'f' used for?
- To calculate the luminaire height above the working plane
- To adjust for variations in room reflectance and index (correct)
- To determine the number of luminaires required
- To define the illuminance standard for outdoor lighting
What does the variable 'P (W)' indicate?
What does the variable 'P (W)' indicate?
What is the minimum luminous flux that LEDs are expected to maintain after their service life?
What is the minimum luminous flux that LEDs are expected to maintain after their service life?
What is represented by 'k' in the ERCO planning data?
What is represented by 'k' in the ERCO planning data?
Which component needs to be calculated for room conditions other than k=2.5?
Which component needs to be calculated for room conditions other than k=2.5?
Which of the following conditions should be avoided for LED operation?
Which of the following conditions should be avoided for LED operation?
What should be ensured about the LED installation to maintain optimal function?
What should be ensured about the LED installation to maintain optimal function?
Which of the following color temperatures is NOT mentioned for LEDs?
Which of the following color temperatures is NOT mentioned for LEDs?
What is the effect of having additional heat sources near LEDs?
What is the effect of having additional heat sources near LEDs?
What is the significance of the working plane height of 0.75 m?
What is the significance of the working plane height of 0.75 m?
What is the typical average service life of certain LEDs as indicated?
What is the typical average service life of certain LEDs as indicated?
What percentage of installed luminaire LEDs may have failed while still being considered acceptable?
What percentage of installed luminaire LEDs may have failed while still being considered acceptable?
The variable 'n* (1/100 m2)' refers to what in the context of lighting design?
The variable 'n* (1/100 m2)' refers to what in the context of lighting design?
What is the meaning of Ra in the context of LEDs?
What is the meaning of Ra in the context of LEDs?
Which factor should not be present in the immediate vicinity of LED luminaires?
Which factor should not be present in the immediate vicinity of LED luminaires?
What warranty period is typically guaranteed for LED products?
What warranty period is typically guaranteed for LED products?
What additional system must be provided when recessed floor luminaires are installed in the ground?
What additional system must be provided when recessed floor luminaires are installed in the ground?
Which component is used to dim the lamp lumens of recessed floor luminaires?
Which component is used to dim the lamp lumens of recessed floor luminaires?
What condition may significantly affect the functional life of recessed floor luminaires?
What condition may significantly affect the functional life of recessed floor luminaires?
What setting must be adjusted to prevent flickering when using external trail-edge dimmers?
What setting must be adjusted to prevent flickering when using external trail-edge dimmers?
What must be avoided when installing recessed floor luminaires?
What must be avoided when installing recessed floor luminaires?
Which lamps are mentioned as having integral starters that cannot be dimmed?
Which lamps are mentioned as having integral starters that cannot be dimmed?
Under what condition should recessed luminaires not be operated?
Under what condition should recessed luminaires not be operated?
What feature do special TC-EL, TC-DEL, and TC-TEL lamps have?
What feature do special TC-EL, TC-DEL, and TC-TEL lamps have?
What is the average service life of the HIT-CE lamp with a power of 150 W and a G12 lampholder?
What is the average service life of the HIT-CE lamp with a power of 150 W and a G12 lampholder?
Which metal halide lamp type has the highest luminous flux?
Which metal halide lamp type has the highest luminous flux?
Which of the following lamps has the lowest color temperature?
Which of the following lamps has the lowest color temperature?
What is the diameter of the HIT-TC-CE lamp with a power of 35 W and a G8.5 lampholder?
What is the diameter of the HIT-TC-CE lamp with a power of 35 W and a G8.5 lampholder?
Which lamp has a color rendition index (Ra) of 85?
Which lamp has a color rendition index (Ra) of 85?
What is the luminous flux of the HIT-DE lamp at 250 W?
What is the luminous flux of the HIT-DE lamp at 250 W?
What is the color temperature of HIT-TC-CE lamps?
What is the color temperature of HIT-TC-CE lamps?
Which lamp type has the shortest average service life?
Which lamp type has the shortest average service life?
Which lamp has the largest diameter?
Which lamp has the largest diameter?
What is the luminous flux of the HIT-TC-CE 20 W PGJ5 lamp?
What is the luminous flux of the HIT-TC-CE 20 W PGJ5 lamp?
What is the main purpose of the WEEE and RoHS guidelines regarding electrical products?
What is the main purpose of the WEEE and RoHS guidelines regarding electrical products?
How are luminaires required to indicate their eligibility for recycling?
How are luminaires required to indicate their eligibility for recycling?
What materials are commonly used in the construction of technical luminaires?
What materials are commonly used in the construction of technical luminaires?
Why must discharge lamps be treated as special waste?
Why must discharge lamps be treated as special waste?
What should a lamp owner do if they need to dispose of discharge lamps?
What should a lamp owner do if they need to dispose of discharge lamps?
Which of the following materials is particularly suited for recycling according to the content?
Which of the following materials is particularly suited for recycling according to the content?
What information regarding waste disposal options is available to the public?
What information regarding waste disposal options is available to the public?
What is a consequence of the WEEE guidelines for electrical products?
What is a consequence of the WEEE guidelines for electrical products?
Study Notes
LED Luminaires
- Average service life of LEDs still achieve a minimum of 70% of their luminous flux after a maximum of 50% LED failure.
- LEDs should not be operated in direct sunlight.
- LED luminaires have a standard 2-year warranty.
- Do not install LED luminaires near heat sources like heating pipes.
Metal Halide Lamps
- Metal halide lamps have a range of power ratings, lampholders, and average service lives.
- Average service lives vary from 5,000 hours to 12,000 hours, depending on the lamp type.
ERCO Planning Data
- Planning data includes the mainted value of illuminance (Em), illuminance (En), number of luminaires (n), connected load (P), and room index (K).
- Luminaire height above the working plane (h) is also included in the planning data.
- The "Guide Values" are calculated for a room index of 2.5, 0.75m working plane, and reflect ances of 0.7/0.5/0.2.
- Use the correction factor (f) for different room conditions.
General Information: Disposing of Lamps
- The EU environmental guidelines for Waste Electrical and Electronic Equipment (WEEE) and RoHS (Restrictions on the use of certain Hazardous Substances in electrical and electronic equipment) apply to lamps.
- All products must bear the crossed-out bin symbol for return and recycling of component materials.
- Luminaires made of cast aluminum, sheet steel, and aluminum sheet can be recycled as scrap.
- Discharge lamps (fluorescent and high-pressure) contain mercury, and should be disposed of as special waste.
- Owners have to arrange for proper disposal of discharge lamps.
- There are companies that specialize in the disposal of discharge lamps.
- EU and non-EU countries have national and cross-sector collection and recycling systems.
- Contact local authorities or the manufacturers for disposal options.
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Description
This quiz covers essential information about LED luminaires and metal halide lamps. Learn about their service lives, installation considerations, and the planning data necessary for effective use. Test your knowledge on the performance and specifications of these lighting technologies.
