Due to non-standardised measurements of energy-saving lamps, not all of those offered in our catalogues are suitable for any kind of light housing from the SLV product range. In case of doubt our customer service offers assistance at any time.
Although they can replace conventional lamps, not all LED lamps are suitable for dimming purposes. You will find information on dimming in our catalogues right next to the particular types of lamps. For all other parts with LED illumination operated by direct or constant current (e.g. LED strips), the regulation of light intensity is possible. Should there be any further questions our customer service offers assistance at any time.
If illumination including energy-saving lightsources is subject to dimming, we only recommend energy-saving lamps explicitly designated as dimmable (e.g. SLV article 508870). In addition, it should be noted which type of dimmer is suitable for this specific lamp (e.g. trailing edge dimmer).
The lifespans stated in our catalogues and on our websites must be considered as average values. The actual lifespan is affected by external influences. Amongst others, these may include be ambient temperatures, fluctuations in the power network, cycles of operation, mechanical influences and many more. A decrease in lifespan can also occur because of inconvenient installation combinations. For instance, an energy-saving lamp with lower cycling endurance connected to a motion detector may reduce the lifespan crucially.
The lifespan stated for a certain LED product is that period of time after which the light yield has dropped to half of its beginning value. The actual lifespan of LED products depends even more on external influences than other kinds of lamps.
In particular, the ambient temperature during the operation is a limiting factor. The heat produced by an LED source is produced towards the rear. Although LEDs do not radiate any heat themselves they do not tolerate high ambient temperatures like other light sources. Therefore, you should take care that no harmful temperatures (>40°C) are about to occur before installing the product.
In the best circumstances, LEDs can reach a lifespan of up to 50,000 hours of operation.
The times from the actual switch-on until reaching full capacity may be very different depending on the model. This period may vary between 2 and 200 seconds.
Metal halide lamps are discharge lamps which require an additional ignition unit. Shortly after switching off a metal halide lamp, it has to cool down before it can be switched on again. This cooling process takes approximately 10 - 15 minutes. Therefore, metal halide lamps are only partially suitable for applications that require high switching frequency.
IRC is a certain technique in halogen lamps where infrared radiation is reflected back on the filament. As a result, IRC lamps generate more light with, at the same time, less current. The following table offers a rough comparison:
Luminous flux is measured in Lumen (lm) and describes the entire visible light, emitted by a source (lamp) in all directions.
Light intensity is a measure for the spatial distribution of the luminous flux. It describes how much luminous flux is emitted by a light source in a certain direction (solid angle). The unit of light intensity is Candela (cd).
The illuminance level (lx) describes the luminous flux which is emitted by the light source and shines onto a certain surface. With the level of illuminance, it can be determined whether a surface is adequately illuminated or not. Both horizontally and vertically, it is measured in Lux (lx).
The colour temperature is measured in Kelvin (K) and describes the light colour of a light source. The values of colour temperature can vary between 2500 and 6500 Kelvin. The higher the colour temperature value, the cooler and whiter the human eye perceives it. A lower value is perceived as warm light.
As per DIN 5035, the colour temperature is separated into three groups:
The light colour itself gives us no information about the quality of the lamp’s colour rendering. Despite the same light colour, the different colour rendering properties can lead to fundamentally different perceptions of colour.
In addition to the colour temperature, the Colour Rendering Index (CRI) describes the colour characteristics of an artificial light source. It gives information about how well a light source reflects the natural body colour of an illuminated object.
The size of the value ranges between 20 and 100. A light source with CRI > 80 makes the colours appear natural and true to the original. A lower CRI value means that the colours of the illuminated object are rendered less well (CRI < 80).
According to the European Regulation 1194/2012, all LED lamps, lights and modules used in interior areas must have a Colour Rendering Index greater than 80. For exterior applications, a Colour Rendering Index greater than 65 is required.
The Luminous Efficacy (lm/w) measures the economic efficiency of a lamp. It describes how efficiently a lamp transforms the collected electrical power into visible light. The higher the Luminous Efficacy, the more efficient the source.
LED products requiring a constant current source are operated with an LED driver providing a constant current at any time. Typical measurements are 350mA, 700mA and 1200mA. In particular, LED products with an incorporated power LED are operated with LED drivers. Once several LED are operated with just one LED driver please make sure they are connected in series. The application must always be installed with zero potential. The mains voltage on the primary side may only be switched on after the complete wiring is finalized. While using drivers (constant current sources) it is recommended to short those out on secondary side to dissipate residual voltage. This, in particular, is the case if the driver in question has already been connected to mains voltage before.
"IP" signifies the "Ingress Protection" and alongside the protection of humans while using the product it also indicates the appropriateness of fittings for various environmental conditions.
The IP protection class is stated by means of two numerals. The first digit provides information about the degree of protection against ingress of foreign objects, whereas the second digit indicates the degree of protection against the ingress of water. Below you will find a list stating the individual IP protection classes:
Installing lights in bathrooms requires certain measures laid down in DIN VDE 0100, part 701 "Requirements for special installations or location areas with bath tub or shower". This standard distinguishes four different room zones and three safety areas. As each country follows different interpretations concerning this issue, kindly check the valid standards prescribed for installation sites in this country:
The most frequent cause for the accumulation of water is air humidity condensation. Condensation is a natural phenomenon. This can take place inside a fitting if it is switched off after a longer period of use. Inside the light´s housing, warm and moist air cools down and creates condensed water. This water can harm electric components and lead to the shutdown of the residual current circuit breaker (RCCB). It is therefore recommended to remove accumulated condensation with a dry towel every now and then. Just make sure the fitting is switched voltage free.
Other causes for humidity inside a fitting are improperly closed cable entries or bad connection of outdoor applications. By means of capillary attraction, a considerable amount of humidity can enter the light’s housing.It is therefore absolutely necessary to pay attention to the annexed operating instructions during an installation to ensure proper connection. An improper procedure, for example, is filling junction boxes with silicone sealant.
Soiled or damaged seals can also lead to humidity inside a particular light. These seals are subject to maintenance and should be reviewed and cleaned at least every time the light sources are replaced. Screw joints that are pressing the seal on via a coverplate have to be tightened crosswise in order to achieve an evenly distributed pressure.
Dimmer modules for dimming of illumination can be divided into two groups. As a rule, trailing-edge phase dimmers are used for the regulation of capacitive loads and leading-edge phase dimmers to regulate inductive loads.
Pure 220-240V applications with conventional halogen lamps (capacitive load) are subject to regulation by trailing-edge phase dimmers. A trailing-edge phase dimmer is also required for low-voltage applications with electronic transformers.
Lighting applications with conventional transformers (inductive load) require a leading-edge phase dimmer. The intense dimming of conventional transformers may cause noise development (for more about this issue please see: Why do transformers sometimes hum?)
To ensure a smooth dimming function, you should check the compatibility of your specific installation with SLV lights, particularly while using third-party dimmer modules from other manufacturers.
Transformer hum is caused by vibrations. There are two different kinds of transformers - conventional (toroidal) and electronic transformers. If the noise cannot be traced back to a faulty unit, it is possible that the noise is caused by magnetic forces acting on the casing or oscillating mounting surfaces (e.g. wooden ceilings). You can remedy this using parts for attenuation (e.g. rubber buffers) on the mounting surface - orby a more solid mounting surface. While using electronic transformers, such humming mainly originates from inadequate capacity utilization. In most cases, a sufficient utilization remedies the hum.
The energy label provides information about the efficiency of energy sources, including lamps and lights. Thus it can be used as a guide in the purchasing decision.
To simplify the evaluation of the lamps in terms of their energy efficiency and to enable a direct comparison, there is a uniform rating scale for classification into energy classes from A++ to E. A++ means that the lamp is very efficient as it has a low power consumption and high light output. Items with energy efficiency class E have a very high power consumption.
Energy efficiency classes are found on the energy consumption label and/or on the product packaging.
At a glance, the energy label for lights provides information about the efficiency of lamps compatible with your light. The classification of energy efficiency classes is made according to the scale described in the section above.
For outdoor area applications within the above mentioned sections the material of light housings is an important factor. Lights with housings made from the following materials are particularly suitable for applications near coasts or other, equally corrosive environments:
As a basic principle, stainless steel is resistant to corrosion. Its outermost layer (passive layer) protects and is self-renewing. However, amongst other things, this layer can be damaged by metal particles (e.g. by tools).
Therefore, stainless steel needs further maintenance and care to keep a lasting attractive surface appearance. More information about the cleaning of stainless steel can be found under "Advice for cleaning and maintaining high-grade steel".
Stainless steel 304 - Good corrosion resistance when there are no high concentrations of chlorine and salt. Not suitable for operational areas with a salty atmosphere. Not salt water resistant.
Stainless steel 316 - Good corrosion resistance in areas with moderate concentrations of chlorine and salt. Not salt water resistant.
Nearly all lights from SLV are suitable for direct fixing on and in normally flammable surfaces. Lights only suitable for mounting on non-flammable surfaces, or with other limitations, are specially markedwith the following symbols in our catalogues and the respective type label on the light itself:
Metal halide lamps, energy-saving lamps, LED lamps and fluorescent tubes may not be disposed of together with the general household waste! Please check if such lamps are restricted to being disposed of at special collection sites in your country or municipality.
In order to make sure that electrical products can be operated safely, the legislator requires various kinds of inscriptions (e.g. type label with information on voltage, lamp types and more). The specific position of these inscriptions is prescribed and depends on the individual details stated. Inscriptions must remain on the fitting at all times and must not be easy to remove. Once the inscriptions are removed the product must not be operated again as, legally speaking, it is no longer complete and safe to use.
The CE-certification is a certification according to EU law. The CE-certification is valid for products that fall within the scope of one or more EU guidelines that allow CE-certification. By putting the CE-certified label on a certain product, the manufacturer confirms that the item meets the product-specific, valid EU guidelines and their affiliated standards. This means it is approved for trade within the European Union. For this purpose, the manufacturer runs a conformity assessment procedure and issues the EC declaration of conformity which is the basis for the authorisation of the CE-certification. The CE-certification itself is not a seal of quality or approval such as for example the VDE certification or the GS-symbol (tested for safety).
A wall light can also be mounted to the ceiling if the particular type is approved for this specific site of installation. In our catalogues and manual instructions this is indicated by the following symbol:
Lights without this symbol must not be mounted directly to the ceiling due to temperature characteristic behaviour or mechanical stress.
The protection classes classify electrical devices or equipment (e.g. lights) with regard to protection against electric shock.
While installing protection class I (one) lights, the protective conductor must always be connected to ensure safe operation. With protection class II (two) lights, the protective conductor is not connected.
If there is no circuit on site that includes a protective conductor, only a double insulated light of protection class II is allowed be installed and connected. If a protective conductor is available, there is no further restriction on using protection class I or protection class II lights.
SLV Elektronik GmbH is member of the RELUX group. On the internet you can find all photometric data for SLV products via www.relux.biz. For further information or assistance please refer to your SLV consultant or the general customer service team.
The conducting paths incorporated in LED strips are only resilient up to a certain capacity. Hence a new power feed must be installed after the maximum capacity or length is reached in order to exclude damage to the conductors themselves.
Stainless high-grade steel is corrosion-proof throughout. The outer layer (passive layer) protects the high-grade steel and rebuilds itself when the surface gets damaged. To achieve and to keep a durable and attractive appearance, certain cleaning measures must be taken. Different types of high-grade steel have varying properties.
The basic cleaning should take place before the product is handed over to the customer.
To reduce the risk of high-grade steel surfaces getting soiled or stained on construction sites, these surfaces should be protected by coverings or by other adequate means. Lime and mortar splashes are removed using diluted phosphoric acid. After application the surface should be cleaned with clear water. Demineralised water inhibits lime deposits! Iron particles must be removed at once, e.g. with a sponge. Rusty particles may penetrate the passive layer and lead to selective corrosion.
For outdoor applications the cleaning effect of rain is usually sufficient. In areas near coasts or areas under industrial influence with higher concentrations of chlorines and sulphur dioxides, maintenance cleaning is important to avoid deposits. Indoors it is usually fingerprints that cause annoying stains.
Usually it is sufficient to remove light dirt and soiling using a damp towel. Dish washing liquid or glass cleaner may also be used. Apply with a towel or a chamois. Persistent dirt may be removed using a cleansing fluid without scouring additives. Use a regular household sponge without any iron components. Do not use scouring powder or steel wool! Oily and greasy soiling may be removed with cleaners containing alcohol. Basically suitable are isopropyl alcohol, spirit or acetone. The cleaning must be repeated until all loose dirt and streaks are removed completely. A sponge and a soft nylon brush may be used for application. Do not use metal brushes!
In areas with a higher than usual corrosive pollution (coastal areas, industrial areas) or with pollution caused by de-icing salt, exhaust gases, or air pollution the cleaning intervals may be shorter (approx. 3-4 times a year) than in areas where such pollutants are reduced or absent (approx. 1-2 times a year). Basically cleaning should take place before large amounts of dirt or stains become evident. Another indication may be the intervals at which glass surfaces are cleaned.