GB/T 17950-2000 in English

《GB/T 17950-2000半导体变流器 第6部分:使用熔断器保护半导体变流器防止过电流的应用导则》由TC60（全国电力电子系统和设备标准化技术委员会）归口，主管部门为中国电器工业协会。
本标准作为应用导则，适用于带有熔断器的半导体变流器，熔断器用来保护构成变流器主臂的半导体。本标准限于单拍或双拍联结的电网换相变流器，也适用于满足GB/T13539.1和GB13539.４要求的熔断器。适当时，本标准的通用条款也对第2章引用标准GB/T3859和IEC1287-1所包括的变流器给出了指导。

Scope

This standard is intended as a guideline for the application of semiconductor converters with fuses used to protect the semiconductors forming the main arm of the converter. This standard is limited to single-shot or double-shot grid commutation converters, and is also applicable to fuses meeting the requirements of GB/T 13539.1 and GB 13539.4. When appropriate, the general provisions of this standard also give guidance to the converters included in the reference standards GB/T 3859 and IEC 1287-1 in Chapter 2. The purpose of this standard is to make recommendations and describe the characteristics of specific fuses and converters to ensure the correct selection and application of semiconductor fuses in converters. At the same time, a special introduction is given to using fuses to protect the safe operation of converters. The main content of this report is explained through the connection of three-phase converters protected by main arm fuses. Moreover, this also applies to converters covered by GB/T 3859.1 and IEC 1287-1.