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Question

一般保险丝由三个部分组成：一是熔体部分，它是保险丝的核心，熔断时起到切断电流的作用，同一类、同一规格保险丝的熔体，材质要相同、几何尺寸要相同、电阻值尽可能地小且要一致，最重要的是熔断特性要一致；二是电极部分，通常有两个，它是熔体与电路联接的重要部件，它必须有良好的导电性，不应产生明显的安装接触电阻；三是支架部分，保险丝的熔体一般都纤细柔软的，支架的作用就是将熔体固定并使三个部分成为刚性的整体便于安装、使用，它必须有良好的机械强度、绝缘性、耐热性和阻燃性，在使用中不应产生断裂、变形、燃烧及短路等现象；
按保护形式分，可分为：过电流保护与过热保护。用于过电流保护的保险丝就是平常说的保险丝（也叫限流保险丝）。用于过热保护的保险丝一般被称为"温度保险丝"。温度保险丝又分为低熔点合金形与感温触发形还有记忆合金形等等（温度保险丝是防止发热电器或易发热电器温度过高而进行保护的，例如：电吹风、电熨斗、电饭锅、电炉、变压器、电动机等等；它响应于用电电器温升的升高，不会理会电路的工作电流大小。其工作原理不同于"限流保险丝"）。

Answer 1

General fuse is composed of three parts: The first part of the melt, which is the core of fuse, fuse cut off the current when the role of play, the same type, the same fuses melt specifications, material to the same geometry to the same resistance small value of as much as possible and to be consistent, the most important characteristics of the fuse to be consistent; second electrode part, usually two, it melts and the circuit is connected to the important parts, it must have good conductivity and should not have the installation of clear contact resistance; Third, support part of the melt fuse is generally soft, thin, the role of stents is to melt the three parts of a fixed and rigid as a whole is easy to install, use, it must have good mechanical strength , insulation, heat resistance and flame retardant, and in use should not result in breakage, deformation, and short-circuit such as the phenomenon of combustion;
In accordance with sub-forms of protection can be divided into: over-current protection and over-temperature protection. Over-current protection for the fuse of the fuse that is normal (also known as current-limiting fuses). Fuse for over-temperature protection are generally known as "thermal fuse." Temperature is divided into low-melting-point alloy fuse-shaped form with the trigger temperature shape memory alloy, etc. There are (temperature fuse is easy to prevent heat or electrical heating appliances for the protection of high temperature, such as: hair dryer, electric iron, electric rice cookers, electric, transformers, motors, etc.; its temperature rise in response to the increased electrical power, would not care about the current size of the circuit. its working principle is different from the "current-limiting fuses").

Answer 2

简单，记好咯！

General fuse consists of three parts: a part, it is the fuse melt, the core of the current has cut off when the fuse, the same kind, the same specification, material to melt the fuse, geometry size to the same resistance, as far as possible, and to the most important characteristic is to be consistent, fusing Second, there are usually two electrodes, and it is the important link with circuit melts, it must have a good part of electrical conductivity, should not be obvious installation contact resistance, Three parts, fuse the stent is usually fine soft melt, the role is to support and melt into three fixed rigid whole installation convenient, use, it must have good mechanical strength, insulation, heat resistance and flame retardancy and in use should not be generated rupture, deformation, burning and circuit; etc.
According to protect form can be divided into:, over current protection and overheating protection. Over current protection for the fuse is usually say the fuse (also called limited flow fuse). The fuse overheating protection for general called "temperature fuse". Temperature fuse is divided again low melting point alloy shape and temperature trigger shape memory alloy shape, etc. (there is to prevent electric heating temperature fuse or high temperature and heating appliances to protect, for example, hair dryer, iron, electric rice cooker, electric motors, transformers, etc; it response to rising power electric apparatuses, won't ignore the working current circuit. Its working principle is different from the "limited flow fuse").