LED Luminaires and Metal Halide Lamps

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Questions and Answers

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?

P* (W/m2) (correct)

P (W)

n (1/100 m2)

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?

The connected load of one luminaire including control gear Signup and view all the answers

What is the minimum luminous flux that LEDs are expected to maintain after their service life?

70% Signup and view all the answers

What is represented by 'k' in the ERCO planning data?

The room index Signup and view all the answers

Which component needs to be calculated for room conditions other than k=2.5?

Correction factor (f) Signup and view all the answers

Which of the following conditions should be avoided for LED operation?

Direct sunlight Signup and view all the answers

What should be ensured about the LED installation to maintain optimal function?

Adequate air circulation Signup and view all the answers

Which of the following color temperatures is NOT mentioned for LEDs?

Cool blue Signup and view all the answers

What is the effect of having additional heat sources near LEDs?

Reduced lifespan Signup and view all the answers

What is the significance of the working plane height of 0.75 m?

It reflects the average eye level of individuals in a room Signup and view all the answers

What is the typical average service life of certain LEDs as indicated?

50,000 hours Signup and view all the answers

What percentage of installed luminaire LEDs may have failed while still being considered acceptable?

50% Signup and view all the answers

The variable 'n* (1/100 m2)' refers to what in the context of lighting design?

The number of luminaires per 100lx Signup and view all the answers

What is the meaning of Ra in the context of LEDs?

Colour rendering index Signup and view all the answers

Which factor should not be present in the immediate vicinity of LED luminaires?

Heating pipes Signup and view all the answers

What warranty period is typically guaranteed for LED products?

2 years Signup and view all the answers

What additional system must be provided when recessed floor luminaires are installed in the ground?

A drainage system like a gravel base Signup and view all the answers

Which component is used to dim the lamp lumens of recessed floor luminaires?

An integral potentiometer Signup and view all the answers

What condition may significantly affect the functional life of recessed floor luminaires?

Ambient temperatures Signup and view all the answers

What setting must be adjusted to prevent flickering when using external trail-edge dimmers?

The potentiometer to the highest setting Signup and view all the answers

What must be avoided when installing recessed floor luminaires?

Direct sunlight exposure Signup and view all the answers

Which lamps are mentioned as having integral starters that cannot be dimmed?

Conventional TC lamps Signup and view all the answers

Under what condition should recessed luminaires not be operated?

When installed near heating pipes Signup and view all the answers

What feature do special TC-EL, TC-DEL, and TC-TEL lamps have?

They can be dimmed unrestricted Signup and view all the answers

What is the average service life of the HIT-CE lamp with a power of 150 W and a G12 lampholder?

12000 hours Signup and view all the answers

Which metal halide lamp type has the highest luminous flux?

HIT-DE 400 W Signup and view all the answers

Which of the following lamps has the lowest color temperature?

HIT-TC-CE 20 W G8.5 Signup and view all the answers

What is the diameter of the HIT-TC-CE lamp with a power of 35 W and a G8.5 lampholder?

14 mm Signup and view all the answers

Which lamp has a color rendition index (Ra) of 85?

HIT-TC-CE 35 W G8.5 Signup and view all the answers

What is the luminous flux of the HIT-DE lamp at 250 W?

20000 lumens Signup and view all the answers

What is the color temperature of HIT-TC-CE lamps?

3000 K Signup and view all the answers

Which lamp type has the shortest average service life?

HIT-DE 400 W Fc2 Signup and view all the answers

Which lamp has the largest diameter?

HIT-CE 150 W G12 Signup and view all the answers

What is the luminous flux of the HIT-TC-CE 20 W PGJ5 lamp?

1650 lumens Signup and view all the answers

What is the main purpose of the WEEE and RoHS guidelines regarding electrical products?

To regulate waste processing and limit harmful substances. Signup and view all the answers

How are luminaires required to indicate their eligibility for recycling?

Using the symbol of a crossed-out bin. Signup and view all the answers

What materials are commonly used in the construction of technical luminaires?

Cast aluminum, sheet-steel, and aluminum sheet. Signup and view all the answers

Why must discharge lamps be treated as special waste?

They contain small amounts of mercury and trace elements. Signup and view all the answers

What should a lamp owner do if they need to dispose of discharge lamps?

Arrange for proper disposal at designated sites. Signup and view all the answers

Which of the following materials is particularly suited for recycling according to the content?

Aluminum Darklight reflectors. Signup and view all the answers

What information regarding waste disposal options is available to the public?

From national, local, and district authorities, as well as manufacturers. Signup and view all the answers

What is a consequence of the WEEE guidelines for electrical products?

Increased emphasis on responsible disposal and recycling. Signup and view all the answers

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.