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GB/T 14048.18-2016 English PDF

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GB/T 14048.18-2016: Low-voltage switchgear and controlgear -- Part 7-3: Ancillary equipment -- Safety requirements for fuse terminal blocks
Status: Valid

GB/T 14048.18: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 14048.18-2016English654 Add to Cart 6 days [Need to translate] Low-voltage switchgear and controlgear -- Part 7-3: Ancillary equipment -- Safety requirements for fuse terminal blocks Valid GB/T 14048.18-2016
GB/T 14048.18-2008EnglishRFQ ASK 4 days [Need to translate] Low-voltage switchgear and controlgear -- Part 7-3: Ancillary equipment -- Safety requirements for fuse terminal blocks Obsolete GB/T 14048.18-2008

PDF similar to GB/T 14048.18-2016


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GB/T 14048.11   GB/T 14048.3   GB 14048.1   GB/Z 14048.24   GB/T 14048.9   GB/T 14048.23   

Basic data

Standard ID GB/T 14048.18-2016 (GB/T14048.18-2016)
Description (Translated English) Low-voltage switchgear and controlgear -- Part 7-3: Ancillary equipment -- Safety requirements for fuse terminal blocks
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K30
Classification of International Standard 29.120.99; 29.130.20
Word Count Estimation 33,384
Date of Issue 2/24/2016
Date of Implementation 2016-09-01
Older Standard (superseded by this standard) GB/T 14048.18-2008
Quoted Standard GB/T 321-2015; GB/T 5169.5-2008; GB 9364.1-2015; GB 9364.2-1997; GB/T 11026.1-2003; ISO 4046-4-2002; IEC 60127-2-2003; IEC 60947-1-2007; IEC 60947-7-1-2009; IEC 60127-2-2003/AMD 1-2003
Adopted Standard IEC 60947-7-3-2009, IDT
Regulation (derived from) National Standard Announcement No
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
Summary This standard applies to terminal blocks with screw-type and non-threaded clamps for connection to hard copper conductors (single-core or multi-conductor) or soft copper conductors. The fuse-link terminal block carries or uses the pipe-type fuse-links as described in IEC 60127-2-2003. Mainly for the exchange of not more than 1000V, frequency to 1000Hz or DC does not exceed 1500V, the maximum short-circuit breaking capacity of 1500A industrial or similar purposes in the circuit. Fuse terminal block The sub-mount has an enclosure inside the electrical equipment. The housing should enclose the terminal block in such a way that the terminal block is accessible only by means of a tool. In some cases, such as in control circuits, the fuse terminal blocks may be designed to be dedicated to short-circuit protection.

GB/T 14048.18-2016: Low-voltage switchgear and controlgear -- Part 7-3: Ancillary equipment -- Safety requirements for fuse terminal blocks


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Low-voltage switchgear and controlgear - Part 7-3. Ancillary equipment - Safety requirements for fuse terminal blocks ICS 29.120.99; 29.130.20 K30 National Standards of People's Republic of China Replacing GB/T 14048.18-2008 Low voltage switchgear and control equipment Part 7-3. auxiliary device fuses Safety requirements for terminal blocks Low-voltageswitchgearandcontrolgear-Part 7-3. Ancilary (IEC 60947-7-3..2009, IDT) 2016-02-24 released 2016-09-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released Directory Preface III Introduction Ⅴ Basic requirements 1 2 terms and definitions 2 Category 3 4 Features 3 5 Product information 3 6 normal use, installation and transportation conditions 4 Structure and performance requirements 8 Test 6 Appendix A (normative appendix) gauge 18 Appendix B (informative) Dissipation power values PV and PVK 19 Appendix C (normative) Test sequence and number of samples Reference 27

Foreword

GB 14048 "Low-voltage switchgear and control equipment" is divided into the following 21 parts. - Part 1. General; - Part 2. Circuit breakers; - Part 3. switch, isolator, disconnector and fuse combination; - Part 4-1. Contactors and motor starters Electromechanical contactors and motor starters (including motor protector); - Part 4-2. Contactors and motor starters - AC semiconductor motor controllers and starters (including soft starters); - Part 4-3. Contactors and motor starters - AC semiconductor controllers and contactors for non - motor loads; - Part 5-1. Control electronics and switching elements Electromechanical control circuits - Electrical appliances; - Part 5-2. Control circuit appliances and switching element proximity switches; - Part 5-3. Control circuit appliances and switching elements Approximate switch (PDF) with definite function under fault conditions Claim; - Part 5-4. Control circuit appliances and switching elements - Evaluation of performance of small capacity contacts - Special tests; - Part 5-5. Control circuit appliances and switching elements Electrical emergency braking devices with mechanical latch function; - Part 5-6. Control circuit appliances and switching elements Proximity to the sensor and switching amplifier DC interface (NAMUR); - Part 5-7. Control circuit appliances and switching elements for approaching equipment with analog outputs; - Part 5-8. Control circuit appliances and switching elements - Three enable switches; - Part 5-9. Control circuit appliances and switching element flow switches; - Part 6-1. Multifunctional electrical switchgear; - Part 6-2. Multifunctional electrical appliances (equipment) control and protection switchgear (equipment) (CPS); - Part 7-1. Terminal blocks for auxiliary devices for copper conductors; - Part 7-2. Protective devices - Protection conductors for copper conductors - Terminal blocks; - Part 7-3. Safety requirements for auxiliary device fuses terminal blocks; - Part 8. Loaded thermal protection (PTC) control unit for rotating electrical machines. This section is part 7-3 of GB 14048. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 14048.18-2008 "Low-voltage switchgear and controlgear Part 7-3. Auxiliary device fuses Line terminal block safety requirements ". The technical differences between this part and GB/T 14048.18-2008 are. --- delete definition 2.8 "rated cross-sectional area" and 2.9 "rated wiring capacity"; - 5.2 "Additional information", change g) to "the manufacturer's stated dissipation power (PV) for overload and short circuit protection and Fuse rated current value "; h) modified to" manufacturer's stated special short-circuit protection rated power dissipation value (PVK) and fuse Body rated current value "; --- 5.3 "Mark on the package", the last increase in the terms "fuse breaking capacity should be based on its installation in the expected short circuit Level to select "as new paragraph, increase" can be printed on the packaging and printed on the "warning" words and indicate in accordance with IEC 60127-2. The breaking capacity of the fuse link required in.2003 shall be selected as "Note" according to its intended short-circuit level at the installation site; --- 7.1.3 "Electric clearance and creepage distance", the second paragraph is promoted to the first paragraph, the second item of item a) is modified to "the same Series and size of the fuse terminal block between the live parts of the insulation "; --- 8.3.3.1 "Mechanical strength test of clamping parts" In paragraph 2 and paragraph 4, the words "thread diameter less than or equal to 2.8 mm Screw-type clamping parts of the tightening torque "content; and clearly stipulates that the test should be in the five fuse terminals block center terminal Block position on two clamping members; --- 8.4.5 "Temperature rise of clamps" and 8.5.2.4 "Thread conditions" for "Threaded clamps with thread diameters less than or equal to 2.8 mm Tightening, tightening torque shall be in accordance with IEC 60947-7-1..2009 Table C.1 or higher value specified by manufacturer " "Higher torque as specified by the manufacturer"; - modify the contents of 8.5.2.5 "analog fuse links for tubular fuse links"; --- Table 2 "Simulated fuse" in the "5 × 20" size corresponding to the maximum power dissipation and the associated resistance value increased by 8A and 10A two levels of value. This part uses the translation method equivalent to IEC 60947-7-3..2009 (version 2.0) "Low-voltage switchgear and control equipment Section 7-3 Min. safety requirements for auxiliary device fuses terminal blocks ". In this part of the normative reference to the international documents have a consistent correspondence between the following documents. --- GB 9364.2-1997 Small fuses - Part 2. Tubular fuse links (IEC 60127-2. 1988, IDT) GB 14048.1-2012 Low-voltage switchgear and controlgear - Part 1. General (IEC 60947-1..2011, MOD) Low voltage switchgear and controlgear - Part 7-1. auxiliary devices - Terminals for copper conductors - GB/T 14048.7-2016 Sub-row (IEC 60947-7-1..2009, MOD) This part makes the following editorial changes. - to remove the preamble of international standards; - Table A.1 format is inaccurate and modified according to IEC 60127-6; In Chart B.1 to B.4 of Appendix B, TS1 = TA ΔTS1 (the temperature measured near the surface of the part), IEC is the "The temperature measured on the surface of the susceptible material" is a typo, which, according to the standard context, is replaced by "easy access to the component surface Measured temperature ". This part is made by China Electrical Equipment Industry Association. This part of the national low-voltage electrical appliances Standardization Technical Committee (SAC/TC189) centralized. This part is responsible for the drafting unit. Shanghai Electric Research Institute. This part participates in the drafting unit. Zhejiang Zhengtai Electric Appliance Co., Ltd., Shanghai Electrical Equipment Testing Institute. This part of the main drafters. Wu Qingyun, Huang Jingye, Zhang Lili, Li Chuan, Sun Jinfeng. This part of the previous version of the standard to replace the release of the situation. --- GB/T 14048.18-2008.

Introduction

The fuse terminal block standard not only includes the requirements of the terminal block, but also consider the GB 9364.1-2015 and Specification and requirements for tubular fuse - links in IEC 60127-2..2003. The link between this standard and the tubular fuse link is established Tubular fuse (rated current with rated characteristics of 5mm × 20mm or 6.3mm × 32mm) Voltage, maximum voltage drop and minimum sustained dissipation power) and IEC 60947-7-1..2009 requirements for terminal block With the basis of. In this way, you can determine the quality of the "fuse terminal block". An important fact is that when using a fuse-type fuse with a fuse terminal block, the heat of the fuse under the rated load Much less heat than under overload conditions. The rated load is the result of the maximum current drop through the rated current, but under overload conditions, There is a considerable increase in the power dissipation equal to the maximum sustained dissipation power specified in IEC 60127-2..2003. In industrial applications, a single fuse terminal block is used in a set of terminal blocks, or many fuse terminals are shaped Into a unique arrangement, which makes the same fuse under the same current dissipation. In addition, it should also be considered in the general range Of the fuse (for overload and short circuit protection), some of the fuse terminal block is specifically used for GB 16895.5 provisions of the short circuit Such as in a control circuit that does not exhibit an overload (ie, a safety coil, indicator, or the like). Therefore, there are four different types of use to be specified in the catalog or on the fuse terminal block. See Appendix B for details. Low voltage switchgear and control equipment Part 7-3. auxiliary device fuses Safety requirements for terminal blocks

1 basic requirements

1.1 Scope This part of GB 14048 is suitable for use with threaded and non-threaded connections to hard copper conductors (single or multi-stranded) or soft copper conductors Type Clamp Fuse Terminal Block. The fuse terminal block carries or uses the pipe fuse described in IEC 60127-2..2003. Mainly used for AC does not exceed 1000V, frequency to 1000Hz or DC does not exceed 1500V, the maximum short circuit breaking capacity of 1500A Of industrial or similar applications. The fuse terminal block is mounted in an electrical device with a housing. The housing should be so surrounded by the terminal block so that the terminal block The row is accessible by means of a tool. In some cases, such as in a control circuit, the fuse terminal block may be designed for use exclusively for short circuit protection. Note. This part can be used as a guide for accepting special fuse terminals with pipe fuses as required by IEC 60127-2..2003. The purpose of this section is to develop detailed safety requirements and mechanical, electrical and thermal performance aspects for fuse terminal blocks Test method to ensure compatibility between the terminal block and the standardized fuse. The following products may use this section as a guide. - need to install a special device on the wire fuse terminal block, such as. fast connection to the end or connection connection; - with fuse or edge puncture insulation to achieve direct contact with the fuse fuse terminal block. For example. insulation moving even And so on. When referring to IEC 60947-1..2007, the term "clamping part" in this section replaces "terminal". 1.2 Normative references The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 321-2005 Number of priority and priority (ISO 3. 1973, IDT) GB/T 5169.5-2008 Fire hazard testing for electric and electronic products - Part 5. Test flame flame flame test method, Confirmation of test methods and guidelines (IEC 60695-11-5..2004, IDT) GB 9364.1-2015 Miniature fuses - Part 1. Definitions for small fuses and general requirements for small fuse - links (IEC 60127-1. 2006, IDT) GB 9364.2-1997 Miniature fuses - Part 2. Tubular fuse links (IEC 60127-2. 1988, IDT) GB/T 11026.1-2003 Heat insulating properties of electrical insulating materials - Part 1. Evaluation of aging procedures and test results (IEC 60216-1..2001, IDT) ISO 4046-4..2002 Glossary of paper, cardboard, pulp and related terms - Part 4. Paper and board grades and conversion products (Paper, board, pulpandrelatedterms-Vocabulary-Part 4. Paperandboardgradesandcoverted products) IEC 60127-2..2003 Miniature fuses Part 2. Tubular fuses (Miniaturefuses-Part 2. Cartridgefuse- links

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