GB/T 15166.5-2022 in English

VALID

High-voltage alternating-current fuse—Part 5:Application directives for high-voltage fuse-links for motor circuit

Issued on:2022-12-30
Implemented on:2023-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $130.00
$127.00

Standard No:	GB/T 15166.5-2022
Document status:	VALID
Title in English:	High-voltage alternating-current fuse—Part 5:Application directives for high-voltage fuse-links for motor circuit
Title in Chinese:	高压交流熔断器第5部分：用于电动机回路的高压熔断器的熔断件选用导则
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2022-12-30
Implemented on:	2023-07-01
Superseding:	GB/T 15166.5-2008 High-voltage Alternating-current Fuses – Part 5: Specification for High-voltage Fuse-links for Motor Circuit Applications
ICS Classification:	29.120.50-Fuses and other overcurrent protection devices
Chinese Classification:	K43-High voltage switchgear
Professional Classification:	GB-National Standard
Related Keywords:	high-voltage alternating-current fuse part high-voltage fuses high-voltage fuse-links standard formulation high-voltage ac fuses motor circuit introduction gb/t15166.5-2022 standard overview
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《GB/T 15166.5-2022高压交流熔断器第5部分：用于电动机回路的高压熔断器的熔断件选用导则》由TC340（全国熔断器标准化技术委员会）归口，TC340SC1（全国熔断器标准化技术委员会高压熔断器分会）执行，主管部门为中国电器工业协会。

Introduction

GB/T15166.5-2022 Standard Overview

This standard specifies the technical requirements, type tests and information provided to users for high-voltage fuses used in motor circuits. It is applicable to fuses used for direct-start motors in 3kV and above, 50Hz AC systems.

Background of Standard Formulation

High-voltage AC fuses are widely used in power systems and factories and mines to protect lines and equipment. With the development of power grids and technological advances, the original standard GB/T15166.5-2008 can no longer meet current needs, so the standard has been revised.

Technical requirements

Technical requirements dimensions	Specific requirements	Scope of application
Fuse time-current characteristics	For fuses with rated current Ir≤100A, If10/Ir≥3; for fuses with Ir>100A, If10/Ir≥4.	All rated current values
K factor determines overload characteristics	Select the K value when the pre-arcing time is 10s. The fuse should withstand repeated overloads under different starting conditions without damage.	Applicable to frequent starting and abnormal operating conditions
Withstand requirements	Fuse links should withstand rapid and continuous starting pulses without degradation, and withstand the motor starting current multiple times under normal operating conditions.	Abnormal operating conditions and normal operating conditions

Standard implementation recommendations

When selecting fuse links, select the appropriate K value based on the starting frequency and operating conditions of the motor, and ensure that it meets the manufacturer's technical specifications. It is recommended to regularly inspect and maintain fuses to ensure their long-term effectiveness and reliability.

More samples: YD/T 3934-2021 NB/T 47013.2-2015 JJG 21-2008

Sample only — not a preview of GB/T 15166.5-2022