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CATÁLOGO GENERAL / Tarifa de precios GENERAL CATALOG / Price list

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132<br />

APLICACIONES PARA LED / APPLICATIONS FOR LED<br />

Índice <strong>de</strong> reproducción cromática (CRI o Ra).<br />

Es una escala <strong>de</strong> 0 a 100 que se emplea para medir cómo una fuente luz consigue reproducir la<br />

apariencia <strong>de</strong> los colores con respecto a una “fuente <strong>de</strong> luz patrón”. Lo que medimos es cómo se<br />

aproxima el color <strong>de</strong> un objeto obtenido con nuestra fuente <strong>de</strong> luz, al color “verda<strong>de</strong>ro” que tendría<br />

bajo la luz normalizada <strong>de</strong> dicha “fuente <strong>de</strong> luz patrón”.<br />

Temperatura <strong>de</strong> color (Tc).<br />

Es la temperatura, en grados Kelvin, que tendría que alcanzar un cuerpo negro al calentarse<br />

para emitir la luz <strong>de</strong>l mismo color que nuestra fuente luminosa. Existe un diagrama normalizado<br />

<strong>de</strong> los diferentes colores o longitu<strong>de</strong>s <strong>de</strong> onda que va emitiendo el cuerpo negro o “radiador perfecto”,<br />

<strong>de</strong> acuerdo a los grados Kelvin a los que va siendo sometido. La temperatura <strong>de</strong> color nos<br />

indica el color aparente <strong>de</strong> una fuente <strong>de</strong> luz, existiendo tres gran<strong>de</strong>s grupos:<br />

Cálida (Luz amarilla): De 2700ºK a 3500ºK aprox.<br />

Neutra: De 3500ºK a 4000ºK aprox.<br />

Fría (Luz blanca): De 4000ºK a 6000ºK aprox.<br />

La temperatura <strong>de</strong> color <strong>de</strong>be relacionarse <strong>de</strong> modo a<strong>de</strong>cuado con los niveles <strong>de</strong> iluminación para<br />

crear una sensación agradable y natural. Para comprobar esa a<strong>de</strong>cuada relación, existe un<br />

diagrama que po<strong>de</strong>mos consultar llamado “Curvas <strong>de</strong> Kruithof”<br />

Ref. DR Driver Regulable mediante señal 1-10v.<br />

Este sistema es uno <strong>de</strong> los primeros y más simples que se i<strong>de</strong>aron. Consiste en crear una tensión<br />

continua que varía entre uno y diez voltios, para controlar en un porcentaje proporcional la potencia<br />

<strong>de</strong> la luminaria, <strong>de</strong> tal modo que a 1V correspon<strong>de</strong> una potencia <strong>de</strong>l 10% y a 10V un 100%. Este<br />

sistema requiere pasar un hilo por el canal <strong>de</strong> control (a<strong>de</strong>más <strong>de</strong> un cable <strong>de</strong> retorno común).<br />

La interferencia <strong>de</strong> los cables <strong>de</strong> alimentación cercanos pue<strong>de</strong> afectar a la señal para la instalación,<br />

causando incluso parpa<strong>de</strong>os.<br />

Ref. DRD Driver regulable Dali.<br />

Está formado por un controlador y uno o más dispositivos <strong>de</strong> iluminación tipo DALI. Este controlador<br />

(“maestro”), pue<strong>de</strong> monitorear y controlar la luz <strong>de</strong> otros dispositivos (“esclavos”) <strong>de</strong> forma<br />

individual o colectiva. Para lograr esto, a cada dispositivo se le asigna una dirección estática<br />

única con un rango numérico y se conectan entre sí con tan solo un par <strong>de</strong> hilos <strong>de</strong> cobre para el<br />

bus <strong>de</strong> comunicación <strong>de</strong> la red DALI.<br />

Chromatic reproduction in<strong>de</strong>x (CRI or Ra).<br />

We use a scale from 0 to 100 to measure how a luminous source can reproduce the aspect of colours<br />

towards a “pattern luminous source”. We measure the difference between the colour coming<br />

from our luminous source and the real light it would had un<strong>de</strong>r normalized light of such a<br />

“pattern luminous source”.<br />

Colour temperature (Tc)<br />

It is the temperature (Kelvin <strong>de</strong>grees) reached by a black object when heating up to give out the<br />

same light as our luminous source. There is a normalized chart for colours or wavelengths<br />

emited by a black object or “perfect radiator”, according to Kelvin <strong>de</strong>grees.Colour temperature<br />

indicates the seeming light of a luminous source, there are 3 major groups:<br />

Warm (yellow light): From 2700ºK to 3500ºK (around)<br />

Neutral: From 3500ºK to 4000ºK (around)<br />

Cold (White light): From 4000ºK to 6000ºK (around)<br />

Colour temperature must match lighting levels to create a natural and nice feeling. Such effect<br />

can be checked through a diagram called: “Kruithof chart”.<br />

Ref. DR Dimmable Driver by Signal 1-10v.<br />

This system is one of the earliest and simplest systems ever created. Consists in creating a DC<br />

voltage that varies between one and ten volts, to control the proportional percentage of the light<br />

power, 1 volt to have a power of 10% and 10 volts for 100% power. This system requires passing<br />

a cable through the control channel (plus a common return wire). The interference from nearby<br />

power cables can affect the signal installation, causing even flicker.<br />

Ref. DRD Dimmable driver Dali<br />

It consists of a controller and one or more light fixtures DALI type. This driver ("master") can<br />

monitor and manage the light of other <strong>de</strong>vices ("slaves") individually or collectively. To accomplish<br />

this goal, to each <strong>de</strong>vice is assigned a unique and static address with a numeric range, they<br />

should be connected together with just a pair of copper wires for the DALI communication.

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