How to estimate the bimetallic thermometer length

How to estimate the length of the bimetallic thermometer four wuutphs control wire core of bimetallic thermometer for copper core, nominal section 2. 5 was and the following, 2 ~ 61 core. 4 ~ 6 was 2 ~ 14 core; Was 10, 2 ~ 10 core. Control the working temperature of bimetallic thermometer: rubber insulation is 65 ° C, PVC insulated to 70 ° C and 105 ° C two grades. Control of the use of a computer system is generally selected bimetallic thermometer polyvinyl chloride, polyethylene, crosslinked polyethylene, and fluorine plastic insulation products how to estimate the length of the bimetallic thermometer from bulk conductivity into consideration, aluminum alloy is less than copper, but we develop conductor is not only made from the aspects of material performance improvement, and also made big breakthrough in the field of technology, we adopt supernormal compression technology, make the compression coefficient reaches 0. 93, and the special line of compression coefficient can reach 0. 95, belong to in the country. Through the compression limit, can make up for the inadequacy of aluminum alloy on the bulk conductivity, make the stranded conductor wire core truthfully heart conductor, significantly lower line core diameter, improve electrical conductivity, under the condition of equal load flow was only 10% bigger than copper conductor diameter. How to estimate the length of the bimetallic thermometer aluminum bimetal thermometer through American UL, Canada CUL, Australian SAI GLOBAI international authoritative institutions detect certification and China national testing center, bimetallic thermometer wire its wuhan high voltage research institute, national fireproof construction material quality supervision inspection center testing authority, such as aluminum alloy conductor operator C22 CSA standard. 2 terms about ACM alloy wires, 38 and GB12706. 1 - - In 2008 and '. 1 version of the performance requirements, and the related standard UL to AA8000 series. Elongation is an important indicator, conductor mechanical properties is an important symbol of product quality and can bear the external force size. Is also examining the bimetallic thermometer conductor mechanical performance of an important indicator. Aluminum bimetal thermometer elongation after annealing treatment can reach 30%, while copper elongation is 25%, average aluminum pole elongation of 15%, is a bimetallic thermometer can replace aluminum core and important index of the copper.