Ecobuild 2014: Light Sense - product presentation

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Transcript of Ecobuild 2014: Light Sense - product presentation

LightSense

LightSense (LightSense Lighting

Solutions Ltd.) specialises in the

development and supply of high

performance, advanced LED lighting.

Brendon Airey – Technical Manager

Welcome to LightScene at EcoBuild:

Electrical Safety Compliance with LED Units

Retrofitting LED lamps to replace

Fluorescent Tubes or Street Lights

You have all seen the BIG claims by LED Lamp resellers and manufacturers. However

before you buy there are a lot of things to consider.

Some of those considerations will be:-

- Will the LED lamp give out the same light that we are used to?

- How do they fit?

- How much will we save?

- How many do we need?

Unfortunately little thought is given to the most important question of all:-

- Are the retrofit lamps SAFE?

In the UK all fixed (hard wired) electrical products need to be installed in accordance to the IEE

Wiring Regulations (BS7671) which conformity should result in also conforming to Electricity at

Work Regulations 1989. In doing so you shall adhere to The Health and Safety at work ACT.

of a LED “Retrofit” Lamps.

Electrical Safety

Ensuring that this is carried out there are various bodies

NICEIC / ECA / Nappit / HSE / Electrical Safety Council

that police the products and the services that installers and

manufacturers provide.

Various tests have been carried out by a number of

authorities in the UK as to the safety of LED „retrofit‟ lamps

Safety Testing of LED Tubes

The Electrical Safety Council commissioned a report with Nemko to carry out safety

testing on randomly selected LED tubes available online in the UK (the full report is

available on their website)

BS7671 (IEE Wiring Regulations) States: - Electrical equipment shall be installed in accordance with

the instructions provided by the manufacturer of the equipment.

The above clearly shows that conforming to BS7671 and ultimately the Health and Safety at Work Act

cannot be done whilst installing LED retrofit lamps, thus possibly placing the onus of compliance onto

the installer.

Therefore, who is liable for dangerous situations that may occur if retrofitting LED Tubes?

• The original Luminaire manufacturer?

• The LED Tube manufacturer?

• The supplier?

• The specification company?

• The Installer?

• The purchaser?

• The building Owners?

Safety Testing of LED Tubes• NEMKO Summary

Conclusions & Recommendations

When fitting the LED retro fit lamps into electronic control gear luminaires all four LED retrofit lamps

submitted for test required the ballast to be disconnected by a licensed electrician, which add

additional labour costs to retrofit installation. In practise this modification is likely to be carried out by

the person purchasing the retrofit lamp who may or may not have the competence to carry out the

modification. This is a potential hazard. Modification of the original fitting would also cause issues of

liability in the case of a fault.

All of the LED retro fit lamps that required removal of the control gear were potentially hazardous

during the removal and replacement of these LED retro fit lamps. All of the instructions (where

available) stated that the supply should be turned off when replacing the lamp, however in practise if

the lamp is faulty (not lit) it may be difficult to tell whether the fitting is energized or not.

The modification itself may also be considered hazardous if not carried out by a competent person.

After modification the fittings also present further hazards if refitted with the original or replacement

fluorescent lamps. A label (provided by the retrofit kit manufacturer) affixed to the modified fitting

indicating that the luminaire has been modified and can no longer operate as originally intended may

help to reduce the risks on this point.

What questions should be being

asked re: LED Lamps?• Would the original manufacturer instruct LED retrofit lamps to be

installed inside their light fitting (Compliance with BS7671)?

• Are the original components suitable to be used in conjunction with LED retrofit lamps (Brittle end caps, Cable characteristics)?

• Will the LED lamp‟s light output comply with the original lighting design of the environment where it‟s to be installed?

• In the event of a fault (not a failure) who accepts liability?

• Does the electrical contractor have the relevant insurance to modify and change characteristics of an original luminaire?

Make up of T8 600 x 600

luminaire:

T8 Luminaires designed for

fluorescent lamps• Cables may not be rated to connect 230volts to the LED tube!

• End caps not rated correctly for Direct AC 230Volt supply!

• No LED Heat management!

• Reflector may be ineffective due to directional LEDs and age!

• What could happen once the fitting has been modified and the

LED lamp is no longer available?

Street Lighting Luminaires

Various discussions on social media have sparked furious debate over the suitability of LED Corn Lamps to be fitted into Street Lighting Luminaires.

Example

80Watt LED Fan assisted lamp to be used in an existing IP65 Street Light.

No regard to:

- Light Output

- Heat dissipation (Other than cooling fan on LED unit)

- Colour temp

- Age of existing luminaire

- Height of Column

- CRI

Summary

• If the original fitting requires alteration then it may not be

compliant.

• If the original fitting does not require alteration of the fitting it

cannot be efficient.

• Explore the replacement of the whole luminaire to a complete

LED product.

What is LED equivalent to?

There is no hard fast calculation as there are numerous different LED chips and optics on the market.

The magic word is “Efficacy”.

Luminaire lumens per circuit watt.

- GU10 50watt halogen lamp is approx 520lumens. = 10.4 ll/cW

- LightSense GU10 6.8Watt LED lamp is 400 lumens = 58.82ll/cW

So this LED lamp is nearly 6x more efficient.

LLS-NC50W Twin 58Watt(5%-10% for ballast) T8 Tube – non corrosive

LLS-P0606 32Watt 4 x 18Watt (72Watts plus 5%-10% for ballast) lay-in modular

What defines a good / bad LED?

• LM80 Data provides a information that can extrapolated to calculate lifetime. L90/L80/L70 or down to L50 (for decorative luminaires.) This is where manufacturers get there lifetime claims from.

• CRI – The colour rendering index, sometimes called colour rendition index, is a measure of the ability of a light source to reproduce the colours of various objects in comparison with a natural light source.

• Stability of colour temperature – Over time colours may degrade as the LED cycles in temperature. At LightSense for most products we use a 3 step ellipse to ensure colour quality over time. The shift in temperature should not be noticeable by the human eye. This ensures that projects that use LightSense luminaires can be phased over to LED.

Mind the smoke in-front of that

mirror.

• Luminaire lumens per watt vs Luminaire lumens per

circuit watt

• Lumen output Vs Initial lumen output

• Independent Data – LightSense ensures all products are

independently tested in the UK to UKAS standards to

ensure that we can prove our claims.

Our Products

Our ProductsLightSense offers a high quality range of

LED luminaires in a variety of

designs, suitable for

Industrial, Commercial and Domestic

applications.

Our UK based R&D department

work tirelessly to source and

develop new products and ensure

that we remain at the forefront of

LED lighting technology.

LLS-P0606 600 x 600 Panel

Dimmable as standard,

Day White (~4000k) or

Cool White (~6000k)

LLS-P0612 600 x 1200 Panel

Dimmable as standard,

Day White (~4000k) or

Cool White (~6000k)

LLS-P0312 300 x 1200 Panel

Dimmable as standard,

Day White (~4000k) or

Cool White (~6000k)

LLS-P0303** 300 x 300 Panel

Dimmable as standard,

Day White (~4000k) or

Cool White (~6000k)

LLS-P0306** 300 x 600 Panel

Dimmable as standard,

Day White (~4000k) or

Cool White (~6000k)

LLS-P01512** 150 x 1200 Panel

Dimmable as standard,

Day White (~4000k) or

Cool White (~6000k)

LLS-P0202** 200 x 200 Panel

Dimmable as standard,

Day White (~4000k) or

Cool White (~6000k)

LED Panels vary in quality & performance.

The LightSense Panel range has the following

benefits:-

- Thick 6mm Light Guide

- PMMA Diffuser

- 2700Lumens

- Dimmable on 1-10Volt as standard (soon

to be switchDIM also)

Our ProductsAll LightSense products undergo UK based photometric

testing. Dr Gareth John of Photometric and Optical Testing

reviewed our 600 x 600 Panel in the August 2013 issue of

Lighting magazine.

The overall conclusion was that

the high efficacy, CRI and low

unified glare rating “make the

LightSense panel a logical

solution for anybody looking to

install a luminous ceiling”The full article is available on our website:

http://www.ledlightsense.co.uk/photometry-focus

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Why use LightSense?

• Support – Product support is overlooked in the LED Lighting Market. LightSensecolleagues have a diverse background so we can be your led at the end of the tunnel.

• Proud of our price! – We make our products to the highest standards. Therefore we may not be the cheapest but the best value for money.

Our ClientsOur lights have been installed in a number of different environments: