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Guide to the selection & application of fuses to deliver protection at the right level

机译:保险丝选择与应用指南,以在右侧级别提供保护

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摘要

This guide answers some of the most frequently asked questions about fuses, including their construction, their limitations and how they operate in specific applications. As outlined above, fuses are perhaps not as simple as they may first seem. Engineers need to be familiar with some of the terms used to specify and select the right fuse for a given purpose and manufacturing process.Application voltage: The fuse's voltage rating must be equal to or exceed the available voltage supply. Although a fuse is ultimately sensitive to the amount of current flowing through it, the voltage rating relates to the voltage difference that the fuse can reliably withstand, so it must also be equal to or greater than the supply voltage.Derating: The total (100%) current rating for a fuse is specified at a typical operating temperature of 25°C. If they are operated at temperatures higher or lower than 25°C, the manufacturer will probably supply a derating curve, to show how much less or more, in percentage form, the fuse can carry per °C.
机译:本指南答案有关保险丝的一些最常见问题,包括其建筑,其限制以及它们在特定应用程序中的运行方式。如上所述,保险丝可能不像他们首先似乎那样简单。工程师需要熟悉一些用于指定的术语,并为给定的目的和制造过程选择正确的保险丝。应用电压:熔丝的电压额定值必须等于或超过可用电压供应。虽然熔丝最终对流过它的电流量敏感,但是电压额定值涉及熔丝可以可靠地承受的电压差,因此它也必须等于或大于电源电压。总数:总数(100 %)保险丝的电流额定值在25°C的典型工作温度下指定。如果它们在高于或低于25°C的温度下运行,则制造商可能会提供额额达曲线,以显示百分比形式的额定曲线,熔断器可以携带每°C。

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