Which Certificates Wire Harness Involved?

Which Certificates Wire Harness Involved?   In the increasingly competitive wire harness market, product certification and factory certification shows particularly important, through the professional testing organizations to carry out strict quality control of product quality, you can effectively screen out qualified products, as well as high-quality suppliers, is a kind of protection for customers.   1- Product Certification   RoHS 1. RoHS certification is a mandatory standard developed by the European Union. It is mainly used to regulate the material and process standards of electrical and electronic products, so that it is more conducive to human health and environmental protection. Rohs has been incorporated into the EU mandatory certification CE, generally only require a test report on it, but if the customer needs a certificate, you can also issue a CE certificate. It is mainly for the raw material of the product to be certified.   Reach 2-Reach is only a test report, there is no certificate, REACH certification is the EU regulation “Registration, Evaluation, Authorization and Restriction of Legal Goods”. It is mainly for the raw materials of the product to be certified.   Water-proof 3-Waterproof certification: First, we need to find out is the customer requirements of the material itself waterproof or design and manufacture of waterproof, which is our priority. About the material itself waterproof: the material itself waterproof means that the connector or wire and cable material can be used outdoors, will not be in the case of immersion in the physical deterioration. Manufacturing design waterproof: It means that after this product is designed and manufactured, this design will not enter water or dust, such as our common strain relief design.   UL 4-UL:  U.S. Security Laboratory certification, proving that the product meets U.S. safety standards. UL is mainly for North America, out of the U.S....

The design logic of Coiled Cable

Coil Cable Design, Manufacturing, Length Calculation and Precautions   1. What is a Coiled Cable ?   A Coiled cable, also known as a retractable coiled cord or spiral cable, is a type of electrical cable that can stretch and retract like a Coils. The prototype of the coil cable is actually a straight cable. The straight cable is wound around a fixed-size jig rod by winding, and the clamps on both sides are used to clamp the wire. Then it is put into the oven and baked for a certain period of time. It is taken out to form a coil cable.   2. Calculating the Real Length of a Coiled Cable     1. Determine the Structure:   Understand the number of coiled sections and straight sections that make up the Coiled cable.     2. Measure the Coil Parameters:     Coil length: we need to be clear the coiled part length, from one pc coiled cable L=350mm   Coil ID : Measure the coiled part OD=15mm this parameter determines the fixture stick’s OD   Coil OD: Measure the coiled part OD=25mm   Cable OD: Measure the cable OD5.0mm   Then we can work out the cable coiled part how many coils. Use the coiled part length/Wire OD 350/5.0=70coils   Counting 1 coil length = πD= 3.14 X (25mm-5.0mm)=62.8mm (‘cause we can’t use the max OD to count the Circumference )   1 coil 62.8mm X 70 coils = 4396mm+the both ends lengths is the one pc cable real length   Note that the measurement method is relatively simple and intuitive but may have some errors. The formula calculation method requires accurate measurement of the structural parameters of the Coiled cable, and the calculated result is only an approximation. In practical calculations, choose the appropriate method based on the specific situation.       4. The...