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First, high temperature resistant wire and cable <br> High temperature wire and cable with long-term continuous working temperature of 125,135,150,180,200,250 and 250 degrees, commonly used radiation-crosslinking polyolefin,silicone rubber,fluororesin,polyamide Imine, mica, magnesium oxide and other wire and cable. Now introduced; two new high-temperature wire and cable.
1. Polyether sulfone (PES) insulated wire has excellent heat resistance, physical and mechanical properties, electrical insulation properties, extrusion molding, in particular, can maintain performance in environments that can be used continuously at high temperatures and rapid temperature changes Outstanding advantages such as stability: heat distortion temperature of 200-220 degrees, continuous use temperature of 180-200 degrees, UL temperature index of 180 degrees; resistance to 150-160 degrees of hot water or steam, free from acid, alkali at high temperatures Erosion; Elastic modulus is almost constant at -100--200 degrees, especially at more than 100 degrees better than any kind of thermoplastic resin; linear expansion coefficient is small, and its temperature dependence is also small; has no toxicity, by the US FDA The accreditation also meets the requirements of the Japanese Ministry of Health and Welfare No. 434 and No. 178; it has self-extinguishing properties and does not contain any flame retardant. It has excellent flame retardancy and can reach UL94V-0 grade (0.46mm).
2. Polyether ether ketone (PEEK) insulated wire Polyether ether ketone is a super heat resistant thermoplastic resin. The long-term continuous use temperature is 250 degrees and the UL temperature index is 250 degrees. PEEK is a flexible resin with good creep resistance. And self-extinguishing, without any flame retardant up to UL94V-1 grade (thickness of 0.3mm), 94V-0 (thickness of 1.5mm), 94V-5 (thickness of 3.2mm) requirements.
Second, the use and structure of a special wire and cable 1. Low-inductance cable has strong and weak electricity divided, here to introduce a strong sense of low-power cable. This cable is equipped with a heat dissipation device for a variety of new types of water-cooled low-inductance cables that are connected between the contact welder, arc welder and pneumatic welding pliers. It has a simple and reasonable structure, large cooling water circulation, and no blockage. Blocking and current limiting phenomena, good heat dissipation, long service life, etc.
This new type of low-impact cable also includes connectors fixed on the cable and cable ends, and the cable is also composed of a positive cable core and a negative cable core installed in the outer hose. Since such low-inductance cables are generally used in applications where the voltage is 25-50V and the current is between 70001 to 12000A, the short-circuit conduction of cooling water in the cable is basically negligible, so there is no such low-inductance cable. Using a rubber hose that separates the positive and negative cores, only a core frame with a spoke-like cross-section (commonly known as a "plum") is provided. The "round center" and the adjacent "spokes" are surrounded. The resulting space forms a longitudinal groove in the direction along the axis, and the longitudinal grooves on the core frame are the same as the total number of the positive electrode cores arranged on the cable. The cable portion thereof is the positive core and the negative core respectively. The longitudinal groove device of the core holder is formed in the outer rubber tube. The two ends of the positive electrode core and the negative electrode core are respectively bundled and clamped into the cable clips and then fixed on the connector. The end of the outer hose of the cable is set on the tail end of the connector and used. Tighten the tight seal outside the outer hose
What are the special cables? - Technical articles Special wires and cables are a series of products with unique properties and special structures. It is equivalent to a wide range of ordinary wire and cable, with high technical content, stricter conditions of use, and small quantities Higher value-added features. New materials, new structures, new processes and new design calculations are often used. This type of wire and cable can be roughly divided into the following four categories: