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GB/T 35715-2017 English PDF

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GB/T 35715-2017: Calculation methods for short-circuit current of DC electrical system on ship
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Standard similar to GB/T 35715-2017

GB/T 35714   GB/T 35713   

Basic data

Standard ID GB/T 35715-2017 (GB/T35715-2017)
Description (Translated English) Calculation methods for short-circuit current of DC electrical system on ship
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard U60
Classification of International Standard 47.020.60
Word Count Estimation 26,225
Date of Issue 2017-12-29
Date of Implementation 2018-07-01
Regulation (derived from) National Standards Bulletin 2017 No. 32
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 35715-2017: Calculation methods for short-circuit current of DC electrical system on ship

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Calculation methods for short-circuit current of DC electrical system on ship ICS 47.020.60 U60 National Standards of People's Republic of China Calculation Method of Shipboard Short Circuit Current in DC Power System 2017-12-29 Posted 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard proposed by China Shipbuilding Industry Corporation. This standard by the National Ship Electrical and Electronic Equipment Standardization Technical Committee (SAC/TC531) centralized. This standard was drafted by China Shipbuilding Industry Corporation 704 Institute, Qingdao Haijian Group Co., Ltd. The main drafters of this standard. Wang Liangxiu, Li Jianguo, Zhang Yuanwei, Liu Lihong, Zhao Fei, Wang Le, Hong Xiaoli, Hu Fangzhen. Calculation Method of Shipboard Short Circuit Current in DC Power System

1 Scope

This standard specifies the calculation method of short-circuit current in the ship DC power system. This standard applies to the rectifier connected to the ship DC power system short-circuit current calculation, including the resistance per unit length and contact power Resistance, local short-circuit current, quasi-steady-state short-circuit current, peak short-circuit current calculation method.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 15544.1 Three phase alternating current system short circuit current calculation - Part 1. Current calculation

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Partial short circuit current partialshort-circuitcurrent Short circuit current from the shorted position of a power supply disconnected from other power sources. 3.2 Common branch Network branches with several partial short circuit currents from different power sources. 3.3 Initial symmetrical short-circuit current initialsymmetricalshort-circuitcurrent i'K If the impedance is maintained at zero, the rms value of the ac symmetrical component of the expected short circuit current applied at the moment of short circuit. 3.4 Peak short-circuit current peakshort-circuitcurrent ip The maximum possible instantaneous value of the expected short circuit current at the DC side. 3.5 Quasi-steady-state short-circuit current quasisteady-stateshort-circuitcurrent iK Short circuit current value at DC side 1 s after short circuit start. 3.6 To the peak time timetopeak tp The interval between the start of short circuit and the peak value of the short circuit current.

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