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首页> 外文期刊>Electricity Today >PART 2: OVERCURRENT PROTECTION OF TRANSFORMERS TRADITIONAL AND NEW FUSING PHILOSOPHIES FOR SMALL AND LARGE TRANSFORMERS
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PART 2: OVERCURRENT PROTECTION OF TRANSFORMERS TRADITIONAL AND NEW FUSING PHILOSOPHIES FOR SMALL AND LARGE TRANSFORMERS

机译：第2部分：变压器的过电流保护小型和大型变压器的传统和新融合理念

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摘要

This is the second of two articles that concern new and traditional fusing philosophies for protecting transformers. Issue 6's article (Part Ⅰ) served as an introduction to the application principles that must be considered when selecting a transformer-primary fuse, in particular, the voltage rating, the short-circuit interrupting rating, and the ampere rating and speed characteristic of the fuse. It also covered how to select a transformer-primary fuse to withstand the various inrush currents it may experience in service, such as magnetizing inrush, hot-load pickup inrush, and cold-load pickup inrush. This article covers how to select a transformer-primary fuse to protect the transformer in accordance with industry-accepted through-fault protection curves, the principles of coordination as they relate to the proper selection of a primary-side fuse and power fuses, and how to protect load-side conductors and cables.
机译：这是有关保护变压器的新的和传统的熔断原理的两篇文章的第二篇。第6期的文章（第Ⅰ部分）介绍了选择变压器主熔断器时必须考虑的应用原理，特别是电压额定值，短路中断额定值以及安培额定值和速度特性。保险丝。它还介绍了如何选择变压器主熔断器以承受其在使用中可能遇到的各种浪涌电流，例如磁化浪涌，热负载拾取浪涌和冷负载拾取浪涌。本文讨论如何根据行业公认的通断保护曲线选择变压器主熔断器以保护变压器，以及与正确选择一次侧熔断器和电源熔断器相关的协调原理，以及如何保护负载侧导体和电缆。

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