GB/T 15166.2-2023High-voltage alternating-current fuses - Part 2: Current-limiting fuses (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"

Drafting.

This document is Part 2 of GB/T 15166 "High Voltage AC Fuses". GB/T 15166 has released the following parts.

---Part 1.Terminology;

---Part 2.Current-limiting fuses;

---Part 3.Injection fuse;

---Part 4.Fuses for external protection of parallel capacitors;

---Part 5.Guidelines for selecting fuses for high-voltage fuses used in motor circuits;

---Part 6.Guidelines for selecting fuses for high-voltage fuses used in transformer circuits.

This document replaces GB/T 15166.2-2008 "High Voltage AC Fuses Part 2.Current-Limiting Fuses" and is the same as GB/T 15166.2-

Compared with.2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) Relevant regulations on normal use conditions have been changed (see Chapter 4, Chapter 2 of the.2008 edition);

b) The rated insulation level of the base has been changed (see 5.3, 4.3 of the.2008 edition);

c) Temperature and temperature limits have been changed (see 5.7, 4.7 of the.2008 edition);

d) Added the maximum allowable operating voltage specification for 40.5kV fuses (see 5.9);

e) The standard value of TRV has been changed (see 5.10, 4.10 of the.2008 version);

f) Added relevant requirements for thermally operated impactors (see 5.14);

g) Added verification test items that need to be conducted every 8 years (see 7.2);

h) Added the selection points for pre-arc time-current test (see 7.7);

i) Added relevant test requirements for thermally operated impactors (see 7.8);

j) Change the oil seal test to the insulating fluid-sealing test, and propose separate tests for fuses for protective switches and protective transformers.

Requirements (see 8.7, 7.7 of the.2008 version);

k) The relevant provisions on factory testing have been deleted and replaced by consultation between the manufacturer and the user (see Chapter 9, Chapter 8 of the.2008 edition).

This document is modified to adopt IEC 60282-1.2020 "High-voltage fuses Part 1.Current-limiting fuses".

Compared with IEC 60282-1.2020, this document has many structural adjustments. Comparison list of structure number changes between two files

See Appendix A for the table.

The technical differences between this document and IEC 60282-1.2020 and their reasons are as follows.

a) Replaced IEC 62271-105 with normative reference GB/T 16926 (see Chapter 1, 5.16.2, 10.2, 10.3.3.2,

F.1.3), to adapt to the actual requirements of our country;

b) Delete the five terms "lightning impulse", "rated lightning impulse withstand voltage", "category", "fuse housing packaging" and "barrel" (see

3.1.23, 3.1.24, 3.3.2, 3.3.12, 3.3.13) of IEC 60282-1.2020 to adapt to the actual requirements of our country;

c) The correction factor for the temperature rise limit (see 4.1) is added to Table 2 to standardize product type testing;

d) Added other usage conditions (see 4.2) to standardize fuses used for ambient temperatures higher than 40°C;

e) The normative reference of IEC 60644 (see 5.1, 5.3.2, 8.2 of IEC 60282-1.2020) has been deleted to adapt to my country's actual situation.

international requirements;

f) The rated voltage has been changed and voltage values irrelevant to our country have been deleted (see 5.2) to adapt to the actual requirements of our country;

g) Deleted the application of all fuses (see 5.2 of IEC 60282-1.2020) and the application of special fuses (see IEC 60282-1.

The division method of 5.3) of 2020 is in line with the usage habits of my country's fuse industry;

h) The rated insulation level of the base has been changed (see 5.3) to maintain the consistency of the insulation coordination system;

i) Delete the permissions of fuses for transformer protection, fuses for motor circuit protection, fuses for capacitor protection, and fuses.

Ratings and characteristics of continuous current and maximum case current (see 5.3 of IEC 60282-1.2020), these contents are in

There are specifications in other parts of GB/T 15166;

j) The normative reference to IEC 60549 (see 5.3.3 and 8.2 of IEC 60282-1.2020) has been deleted to adapt to my country's actual requirements;

k) The 60Hz rated frequency value (see 5.4 of IEC 60282-1.2020) has been deleted to adapt to my country's actual requirements;

l) Temperature and temperature limits (see 5.7) were changed to maintain consistency with high-voltage switchgear regarding temperature and temperature rise;

m) Added the maximum allowable operating voltage specification for 40.5kV fuses (see 5.9) to better standardize product production;

n) The standard value of TRV has been changed (see 5.10) to maintain parameter consistency with the matching high-voltage switchgear;

o) Added verification test items that need to be conducted every 8 years (see 7.2) to better control product production quality;

p) Replaced IEC 60060-1.2010 (see 7.4.3~7.4.6) with normatively cited GB/T 16927.1-2011 to suit our needs

actual country requirements;

q) Replaced IEC 60071-1 (see 7.4.4) with the normatively quoted GB/T 311.1 to adapt to the actual requirements of our country;

r) The number of tests for test method 3 has been changed from 2 to 3 (see 7.6.1.1) to adapt to the actual requirements of our country;

s) The point selection value and number of tests for the pre-arc time-current test are added (see 7.7) to standardize product type testing;

t) The electromagnetic compatibility test (see 7.8 of IEC 60282-1.2020) has been deleted. This test is meaningless for the product;

u) Delete the division method that certain types of fuses are applicable and tested only when required by the user (see 8.2), in order to comply with my country's fuse

Usage habits of the equipment industry;

v) The indicator test is deleted (see 8.3.1 of IEC 60282-1.2020), which is meaningless for the product;

w) Added selection guidelines (see Chapter 10) to facilitate product selection;

x) Added normative reference to GB/T 3804 (see 10.3.4) to adapt to the actual requirements of our country.

The following editorial changes have been made to this document.

---In order to coordinate with the existing standards, the name of the standard is changed to "High Voltage AC Fuses Part 2.Current-Limiting Fuses";

---Move the term "maximum operating temperature" (see E.3 in IEC 60282-1.2020) to Chapter 3 (see 3.3.11) to comply with

GB/T 1.1 requirements;

---Added Appendix A (informative) "Structural changes in this document compared with IEC 60282-1.2020";

---Added Appendix G (informative) "Practical Guide to Reducing Thermal Ratings of Current-Limiting Fuses".

Introduction

High-voltage AC fuse products are widely used in my country's power transmission and distribution systems with nominal voltages of 3kV and above, as well as factories, mines, enterprises, and residents.

In residential areas, it also serves as a protection device for lines and equipment such as motors, transformers, fuses, etc. In this regard, our country has established a system to support high-pressure

GB/T 15166 "High Voltage AC Fuse" series of national standard systems for AC fuse products. GB/T 15166 aims to establish the applicable

The guidelines for the design, rating, testing and selection of high-voltage AC fuses for special use occasions are planned to consist of 7 parts.

---Part 1.Terminology. The purpose is to provide common terminology for standards within the system.

---Part 2.Current-limiting fuses. The purpose is to provide normative requirements for high-voltage AC current-limiting fuses.

---Part 3.Injection fuse. The purpose is to put forward normative requirements for high-voltage AC jet fuses.

---Part 4.Fuses for external protection of parallel capacitors. The purpose is to provide fuses for external protection of parallel capacitors, a special

special additional requirements.

---Part 5.Guidelines for selecting fuses for high-voltage fuses used in motor circuits. The purpose is to protect the motor circuit

The special working condition of fuses imposes special additional requirements.

---Part 6.Guidelines for selecting fuses for high-voltage fuses used in transformer circuits. The purpose is to protect the transformer circuit

The special working condition of fuses imposes special additional requirements.

---Part 7.High-voltage fuse guidelines and application guidelines. The purpose is to provide guidance for the selection of fuses under different operating conditions.

High voltage AC fuses Part 2.Current limiting fuses

1 Scope

This document specifies the normal and special operating conditions, ratings and characteristics, design and structure, type testing, factory testing, etc. of current-limiting fuses.

requirements.

This document is suitable for indoor or outdoor use designed and installed in AC systems with a nominal voltage of 3kV and above and a frequency of 50Hz.

All types of high voltage current limiting fuses.

The fuse element of some fuses is equipped with an indicating device or striker. These fuses are within the scope of this document, but the strikers and switchgear

The correct action after setting the tripping mechanism combination is not within the scope of this document, see GB/T 16926.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations

For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to

this document.

GB/T 311.1 Insulation coordination Part 1.Definitions, principles and rules (GB/T 311.1-2012, IEC 60071-1.2006,

MOD)

GB/T 3804 3.6kV~40.5kV high voltage AC load switch

GB/T 11021 Electrical insulation heat resistance and expression method (GB/T 11021-2014, IEC 60085.2007, IDT)

GB/T 16926 High-voltage AC load switch-fuse combination electrical appliance (GB/T 16926-2009, IEC 62271-105.2002,

MOD)

GB/T 16927.1-2011 High voltage testing technology Part 1.General definitions and test requirements (IEC 60060-1.2010,

MOD)

Note. There is no technical difference between the quoted content of GB/T 16927.1-2011 and the quoted content of IEC 60060-1.2010.

3 Terms and definitions

The following terms and definitions apply to this document.