LED stands for light-emitting diode. LEDs are small light sources that become illuminated by the movement of electrons through a semiconductor material. LED’s have been around for many years and have been used in various applications for a long time. LED traffic lights are used widely in Australia and most of us still use a remote control with an infra-red LED as the transmitter or a DVD or CD player with the LED to read data.
2. I’ve heard LED's are very energy-efficient – is this true?
3. So what’s so good about converting to LED lights?
4. What’s wrong with other low-energy lighting?
5. Do these lights flicker?
7. How much power will I save using LED bulbs?
8. What color of light can LED emit?
9. Why do they cost so much still?
10. LED SMD Comparison: 3528 vs 5050
Some of our newest LED lights come in two varieties: a 3528 SMD version and a 5050 SMD version. But what does that mean?
SMD LEDs "SMD" stands for Surface Mounted Device and is a new breed of LED lighting technology that offers much higher light output than previous LED generations, while still using only a fraction of the power used by traditional light sources.
3528 SMD LED Specs
5050 SMD LED Specs
Summary: The 3528 SMD is a single-chip medium-output LED. The 5050 SMD is a larger, three-chip high-output LED that has approximately 3X the brightness of the
11. The light is listed as 300w using 50-6w bulbs, but it's stated that the driver only runs them at 50% capacity, so doesn't this make the fixture a 150w system? (50 bulbs running at 3w power) Interested in the light but I'm confused.
Good question. All LED out there, no mater what manufacture can only run at most 65% of the total capacity of the LED otherwise they will burn. The technology is currently that the LED chip are "driven" this high until better drivers are made to protect the LED chip for longer duration. You can run the LED 100% only for a few second, such as in flash application of a camera. So if you try to run you flash on your camera for only for a few minutes, it will burn, even though it is capable of producing a lot of light. LED are made the same way, driven at max 50% for full time use, 100% only very short time. We disclose all feature of our led, and even at 50% for over 50,000 hrs of use, it is still the brightest LED out there on the market. These units are currently use on SPS corals and giant clams with amazing growth at public aquariums with 36" tall tanks! 300w applies to the hardware but not the current usage. In the near future, much better driver will be available to switch out in these fixture for even brighter application for taller tanks.
FAQ on Safety Certification of Aquatop LEDs (May 21, 2012)
All electronic products for sale in the US need to be certified as safe. There are a variety of certifying organizations. The following discussion is intended to acquaint you with these certifications and answer your questions regarding Aquatop LED compliance. All Aquatop LEDs are currently CE and RoHS certified by the manufacturer and so stated on most of the packages that we carry. These certifications are EU (European Union) certifications.
The U.S. is way behind the EU in migrating from incandescent lighting to LED lighting. As a consequence, most LED manufacturers have EU certification at this time and very few have certification from a US Nationally Recognized Testing Laboratory (NRTL). The manufacturer for Aquatop LEDs has applied for UL certification for many of the bulbs listed on our website. The certification process normally takes 3 – 6 months. We will provide an update on this Website when Aquatop LEDs receives certification from one of the OSHA approved NRTLs.
[Interestingly enough, neither Costco, Home Depot nor Lowes LED bulbs list any certification on most of the LED bulbs they carry. We called one of the Costco suppliers and he stated that he simply repacks the bulbs coming in from China into those typical plastic wraps for Costco.]
UL, CSA, ETL and CE: What’s the Difference?
Basically they are stamps of approval. Aquatop LED products with those logos meet rigorous standards for electrical safety and electromagnetic emissions. The acronyms are spelled out below:
UL: Underwriters Laboratories Inc.
Are all product certification marks the same?
In the U.S., organizations are accredited by the Occupational Safety and Health Administration (OSHA) as Nationally Recognized Testing Laboratories (NRTLs) to test and certify electric and gas products to the applicable U.S. standards and codes. Because these NRTLs meet the same qualifications and use the same standards, their certification marks are regarded as equivalent by regulatory authorities. Thus, the CSA (Canadian Standards Assn.) mark and other qualified marks are considered to be equivalent.
What certification does a manufacturer need to sell products in the U.S.?
In America’s voluntary certification system, manufacturers are free to choose which third-party certifier they would like to use for product certification. State and municipal regulations may specify that the certification organization must be a Nationally Recognized Testing Laboratory (NRTL), but they do not specify which NRTL or which mark to use.
What is the CE mark, and what is its purpose?
The European Commission describes the CE mark as a "passport" that allows manufacturers to circulate industrial products freely within the internal market of the EU. The CE mark certifies that the products have met EU health, safety and environmental requirements that ensure consumer and workplace safety. All manufacturers in the EU and abroad must affix the CE mark to those products covered by the "New Approach" directives in order to market their products in Europe. Once a product receives the CE mark, it can be marketed throughout the EU without undergoing further product modification.
If an Aquatop LED product is stamped CE, the product does not emit excessive radiation (microwave or RF), and is not overly sensitive to picking up radiation. Here are some examples of tests that electronic devices must pass to earn the CE mark:
EN 55103-1:1995 Electromagnetic Compatibility Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions
In summary, the certification marks on Aquatop LED products are your assurance that the product meets rigorous standards for electrical safety and electromagnetic emissions. It poses no shock hazard (except as noted on the product or in the manual), and it will not cause electromagnetic interference with other devices beyond a certain distance. You can use the product with confidence.
Does OSHA accept the "CE" mark or accept equipment certified by foreign testing organizations?
According to OSHA’s Website, the CE mark is unrelated to the requirements for product safety in the US. It is a generic mark used in the European Union (EU) to indicate that a manufacturer has declared that the product meets requirements in the EU for product safety. In the US, under OSHA's NRTL requirements, the product must have the specific mark of one of the NRTLs recognized to test and certify these types of products.
Does OSHA participate in mutual recognition or similar agreements?
At this time, OSHA does not participate in any such agreements but previously OSHA participated in the 1998 Mutual Recognition Agreement (MRA) between the United States (US) and the European Union (EU) through the now suspended Electrical Safety Annex. Under the terms of this MRA, European laboratories were allowed to submit applications to OSHA for recognition as an NRTL, which OSHA would have processed under its normal procedures. The US/EU MRA did not change OSHA's NRTL application process but only provided a mechanism to address a provision in OSHA regulations that requires OSHA to consider policies on "reciprocity," in determining the eligibility of foreign-based organizations for recognition.
What does the RoHS certification on Aquatop LEDs mean?
RoHS refers to the EU’s ‘Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment’, commonly referred to as the Restriction of Hazardous Substances Directive or RoHS), adopted in February 2003 by the European Union. The RoHS directive took effect on 1 July 2006, and is required to be enforced and become law in each member state. This directive restricts the use of six hazardous materials in the manufacture of various types of electronic and electrical equipment. RoHS is often referred to as the lead-free directive, but it restricts the use of the following six substances:
1. Lead (Pb)
PBB and PBDE are flame retardants used in several plastics.