GB/T 15166.1-2019 in English

VALID

High-voltage alternating-current fuses—Part 1:Terminology

Issued on:2019-06-04
Implemented on:2020-01-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $270.00
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Standard No:	GB/T 15166.1-2019
Document status:	VALID
Title in English:	High-voltage alternating-current fuses—Part 1:Terminology
Title in Chinese:	高压交流熔断器第1部分：术语
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2019-06-04
Implemented on:	2020-01-01
Superseding:	GB/T 15166.1-1994 Alternating-current high-voltage fuses - Terminology
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 fuses full range fuses backup fuses terminology introduction analysis terminology system
Related Topics:	Fuse Standard fuse High voltage fuse High frequency melting technology broken GB/T 15166.1 GB/T 15166.1-1994 GB/T 15166.1-2019 Causes of blown transformer high voltage fuse Encyclopedia of High Segmentation Capacity High Voltage Fuses GB15166.1

《GB/T 15166.1-2019高压交流熔断器第1部分：术语》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

Analysis of the core content of the standard

1. Terminology system reconstruction

The new version of the standard systematically reconstructs the terminology system of the 1994 version. The main changes include:

Adopting a three-level classification structure of fuses and their components, electrical characteristics, and additional terms
Adding 12 terms required for modern power systems, such as backup fuses and full range fuses
Introducing the corresponding relationship of the IEC60050-441 international standard (see Appendix A for details)

2. Comparative Analysis of Key Terms

Term Category	1994 Edition	New in the 2019 Edition	Technological Evolution
Fuse Type	Basic Classification	Current Limiting/Ejection/Drop Type Subdivision	Adapting to Smart Grid Requirements
Electrical Parameters	7 Basic Parameters	9 New Items such as Joule Integral and Apparent Time	Improving the Quantification of Protection Characteristics
Structural components	5 types of components	4 subdivisions such as fuse carrier contacts	Support modular design

3. In-depth interpretation of core parameters

3.1 Fusing characteristic parameters

Cut-off current (Article 2.2.7): A key indicator that characterizes the current limiting capability of a fuse. The measured value should be lower than the expected peak current of the circuit. For example, in a 10kV system, when the expected short-circuit current is 20kA, the cut-off current of a high-quality current limiting fuse must be controlled below 8kA.

3.2 Time characteristics

T²t characteristics (Article 2.2.14): The energy integral parameter of the fuse, which is directly related to the thermal stability performance of the equipment. Typical application case: When selecting a motor protection fuse, ensure that its operation T²t value is less than the tolerance of the protected equipment.

4. Recommendations for Standard Implementation

4.1 Design and Application

Preferably use full range fuses (Article 2.3.9) to achieve full protection from overload to short circuit
Pay attention to the requirements of non-interchangeability (Article 2.3.6) to avoid misusing fuses with different protection levels

4.2 Testing and Verification

Transient and power frequency components should be included when testing the recovery voltage (Article 2.2.18)
Verify>same family series (Article 2.3.4) fuses require sampling of representative models

5. Standard evolution trend

This standard adopts the IEC60050-441 international standard through modification, reflecting the following technical developments:

The definition of terms is fully aligned with the IEC system (Appendix A provides a detailed comparison)
A new Appendix B provides typical structural diagrams of current limiting and ejection fuses
The precise parameter definitions required for the introduction of digital power equipment

More samples: DL/T 368-2010 GB 18306-2015 GB 50021-2001(2009)

Sample only — not a preview of GB/T 15166.1-2019