LED lighting industry, said CE certification is to enter the EU stepping stone, with VDE certification, can make your products in Germany extending in all directions, if the UL certification is a US pass. LED lamps to go through the UL certification test, the main core components of the LED drive power must be in line with UL certification standards, the following first to take you about the understanding of some of the basic knowledge of UL certification.
UL certification
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UL is a product safety testing and certification organization, she is also the founder of the US product safety standards. For more than a century, UL has conducted hundreds of thousands of products and components related to the safety test and in accordance with international norms to evaluate its handling system in the United States, for consumers, UL is a symbol of security signs. Worldwide, UL is one of the most trusted suppliers of qualified evaluators.
UL is a short description of Underwriter Laboratories Inc. UL safety test is the United States the most prestigious, but also on the community engaged in safety testing and determine the larger civil society organizations. It is an independent, nonprofit, professional organization that works for public safety. It uses scientific test methods to discuss the determination of a variety of information, equipment, products, equipment, construction and other life, industry, the extent of damage and damage; determine, write, issue the appropriate norms and help to reduce and avoid the formation of life Industry is the loss of information, together with the facts of the investigation business. In short, it is mainly engaged in product safety certification and business safety certification services, the ultimate intention is to get the appropriate level of goods for the store, for personal health and industrial safety to ensure that to contribute. With regard to product safety certification as a useful means to eliminate barriers to international trade, UL has also played an active role in promoting international trade. UL product certification, test service varieties can be divided into the first column, recognition and classification.
1) LISTED (LISTED): Generally speaking, the column name is only applicable to the perfect product and qualified personnel in the field to replace or equipment of various equipment and equipment, owned by the UL listing of various products include: household appliances , Medical equipment, computers, commercial equipment and the effect of various types of electrical products in the building, such as distribution systems, fuses, wires, switches and other electrical components. UL listed by the product, generally in each product marked on the UL listed mark. The use of the column name.
2) Recognized: Recognized service is a UL service in a project, the decision of the product can only UL listed, grading or other recognized products as a meta-equipment, the original data used. The approved product is not structurally sound and may have a certain constraint on the use to ensure that the intended safety function is reached. In most cases, the accreditation of the product is attributed to the R class.
Classifications approved for Class L include electronic wire (AVLV2), wire (ZKLU2), wire harness (ZPFW2), aluminum (DVVR2), and metal flexible (DXUZ2). Approved product requirements with approved symbols.
3) Classification: Classification of the product only to assess the specific damage to the product, or to comply with UL specifications other than the norms (including internationally recognized norms, such as IEC and ISO specifications, etc.) to evaluate the product. In general, most graded products are not products that consumers use, but industrial or commercial applications. The grading mark in the UL mark indicates that the product has a certain degree of constraint and rule size when the UL is judged. For example, a chemical such as a solvent for industrial use is evaluated only for the amount of fire that may occur when it reaches the ignition temperature. Some products have the same level of service and name service, but generally only one or several aspects of the product evaluation, such as in the United States, medical X-ray diagnostic apparatus such equipment to abide by the United States and the United States and the radiation The accuracy of the rules, but because the UL only X-ray as a grading product, so only evaluate its mechanical function, electrical function and other non-radiation function of these aspects.
4) multiple column name, multiple recognition or multiple grading service: When a UL claimer in the above name, recognition or grading service, the product to the name of another company to produce a satisfactory sale of demand, to request Multiple names, multiple recognition or multiple grading services, in which case the manufacturer of the listed, recognized or graded manufacturer is allowed to use the name of another company in the product list, but the product, except the company code, product code or UL companies that can withstand other features, it is necessary with the original name, recognized or graded products together.
5) "AL" column name, recognition or grading service: If the UL claimer does not want to use their own name in the name of the company, recognized or graded service, he can request another firm (usually a retailer or wholesaler) in the name Request the name, recognition or classification, that is, "AL" column name, recognition or grading service. The difference between it and multiple column names, multiple recognition or multiple grading is that the claimant is not a celebrity.
UL certification request procedure
How to do after UL certification how to get through the product certification more benefits? The key is that you and your project engineers to communicate frank and frequent, especially in the pre-delivery process.
1. How is the Aggregation Service organized? UL's Engineering Services Department divides multiple parts according to different product varieties. Its operations staff include senior engineers and technical staff. Examine the structure of the product, conduct a test, evaluate the test results and develop a specification that is only part of their homework. UL also includes a field representative to the factory site. The on-site representation is to ensure that UL products conform to UL specifications.
2. Who can deliver the product? Products are generally delivered by entities such as product manufacturers or developers, or other authorized agents, representatives, and so on. When you deliver the product, you can pick the name of the entity (such as the manufacturer, the agent, or other entity) that appears on the product catalog of the UL book. Once the resolution is resolved, the name must appear on all products that are satisfied with the UL Code and are prepared to use the UL symbol.
3. When should the product be delivered? It is best in the process of product development delivery products, and the sooner the better. In general, UL engineers can go through the pre-test of the product to help you decide whether to modify or rework the local. Although the pre-test can not replace the product of the perfect test, can not obtain the use of UL symbols authorized, but it can save you money. Pre-test can be done in any UL laboratory, UL branch organization or in your place of origin, and only take one to two days. (This article mainly for foreign affiliated enterprises, other enterprises have no practical significance)
4. how to deliver the product We can consult with UL's customer service staff for assistance. This is especially important for a company that first requests UL, because the customer service staff is a bridge between UL and the customer. Responsibilities of the customer's staff include: * Answering questions about UL * Directing customers to the right part of the project * Working with the UL part of the handling of customer-related issues The first time to deliver the product to UL is based on your convenience, UL US laboratory customer staff or other regional branch of the organization. The letter must contain the following information to assist UL in understanding your test scale and requirements:
1. Describe the product and its corresponding use. List the types or categories of all delivery products and describe the similarities and differences between the different product categories or types.
2. List all parts and materials used in the product - including the manufacturer, type, quantity, size, rating, etc. - and whether it is UL approved or listed. For all aggregated information, specify the species name, manufacturer, type (eg, a thermoplastic material) of the information and explain how they are applied to your product.
3. If you believe that UL engineers will be informed of the product's planning, structure or operating principle, please include product-related circuit diagrams, wiring diagrams, planning drawings and / or product photos.
4. All instructions supplied with the product, safety instructions or equipment instructions, and all symbols that appear on the package.
5. List all other information and parts that you plan to use later. This will allow you to use this information in the future to cut test fees and moments.
6. The name of the delegate to whom you are authorized, who will receive a correspondence with UL, including a final quiz and an invoice.
7. Supply the factory name and address of the produced product.
8. Supply the name of the company that appears on the corresponding product catalog of the UL book. The product should be sold in the name of the company (it can be different from the real producer).
9. Indicate whether the new product or the updated product has the same structure or characteristics as the UL certified product of you or any other organization. If the product is now certified by other certification organizations, please tell UL. If possible, UL will try to use your previous test data or other UL customers to authorize you to use the data to save your costs and moments.
10. How does the product test start? Once UL obtains all the data you can supply, UL can decide which part to test the product. UL Engineering will: * Prepare the test plan, * Provide the estimated test fee, * Approximate completion of the test * Send the request form at this point, if you have any time limit, you should tell UL so that it is in the organization test time Of the time to be considered. Once you have returned the request and supplied the corresponding prepayment, and UL engineers received the corresponding quiz samples, UL engineers were able to start verifying your product.
11. What happens after the quiz? Once the product test is completed, your project engineer will tell you if the product meets the UL requirements. For products that meet the requirements of UL, the project engineer will prepare a formal statement based on the test data. The test data will also be used for stalking and serving as a basic part of the strenuous service. The technique is a document detailing the structure of the product that meets UL requirements. UL's on-site representative will use this document as a counseling to carry out the periodic UL product inspection at the factory. Before UL engineers send you a test statement to you, you will need to agree to participate in UL's stalking program. It is necessary for you to sign and return to the stern statement to show that you are participating in the program. In general, this document will be sent a few days after the request form is sent. If, for some reason, your product does not meet UL's requirements, UL will tell you not to meet the requirements. If you choose to change the product and are willing to repeat the test, you can contact the person who originally intended as your intention to contact the necessary project. If you have questions about a test result, a requirement, or a UL resolution, the UL complaint procedure allows you to let UL's organization hear your opinion without worrying about the relationship with UL.