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GB 14048.2-2008: [GB/T 14048.2-2008] Low-voltage switchgear and controlgear -- Part 2: Circuit-breakers
GB 14048.2-2008
Low-voltage switchgear and controlgear.Part 2. Circuit-breakers
ICS 29.120.40
K31
National Standards of People's Republic of China
GB 14048.2-2008/IEC 60947-2.2006
Replacing GB 14048.2-2001
Low-voltage switchgear and control equipment
Part 2. Circuit Breaker
(IEC 60947-2.2006, IDT)
Posted 2008-09-19
2009-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface ???
1 General 1
2 Definition 3
3 Category 6
Characteristics of the circuit breaker 7 4
5 Product Data and information 12
6 normal operation, installation and transport conditions 13
7 Structure and Performance Requirements 13
8 Test 18
Appendix A (normative) breaker and another short-circuit protection devices in series in the same circuit with the 41 in short-circuit conditions
Breakers Appendix B (normative) has a residual current protection 47
Annex C (normative) unipolar circuit test program 69
Appendix D empty 70
Annex E (informative) Submit manufacturer and user consultation project 70
Additional tests Annex F (normative) with electronic overcurrent protection circuit breaker 71
Annex G (normative) Power 89
Test procedures Annex H (normative) for the IT system of the circuit breaker 91
Requirements and test methods Appendix J (normative) Electromagnetic compatibility (EMC) --- breaker 93
Annex K (informative) standards cover about 101 symbols Product Summary
Annex L (normative) without over-current protection circuit breaker 103 requirements
Annex M (normative) Residual Current Devices (Without Internal Current Breaking Device) 106
Annex N (normative) Electromagnetic Compatibility --- does not include the additional requirements in Appendix B, Appendix F and Appendix M of the Annex and
Test 141
Appendix O (normative) instantaneous tripping circuit breaker (ICB) 144
References 146
GB 14048.2-2008/IEC 60947-2.2006
Foreword
This section provisions mandatory standards. This section 7.1.3,7.1.4,7.2.1,7.2.3,7.3,8.3.3.2,8.3.3.8,8.3 .5
8.4 and Appendix B, Appendix F, Appendix J and Appendix N mandatory, the rest are recommended. With an electronic overcurrent protection circuit breaker electronic
Control means EMC test is important, the electronic control unit must be manufacturers of EMC test products, such as circuit breakers factory option
EMC tests have been conducted with electronic products, and has a test report, you do not have to repeat the test.
This part is the "low-voltage switchgear and control equipment" Part 2, product standards, which includes the basic requirements of the circuit breaker and test
method. General requirements for circuit breakers, such as general terminology, test circuits, methods prescribed in Part 1. This section must
Part 1 using the binding. "Low-voltage switchgear and control equipment" includes.
--- GB 14048.1 low-voltage switchgear and control equipment - Part 1. General
--- GB 14048.2 low-voltage switchgear and control equipment Part 2. Circuit Breaker
--- GB 14048.3 low-voltage switchgear and control equipment - Part 3. Switches, disconnectors, switch and fuse combination
Electric
--- GB 14048.4 low-voltage switchgear and control equipment, electromechanical contactors and motor starters
--- GB 14048.5 low-voltage switchgear and control equipment Part 5-1. Control circuit devices and switching elements - Electromechanical control
Electrical circuit
--- GB 14048.6 low-voltage switchgear and control equipment, contactors and motor starters Section 2. AC semiconductor power
Motor controller and starters
--- GB/T 14048.7 low-voltage switchgear and control equipment - Part 7-1. Ancillary equipment - Terminal blocks for copper conductors
--- GB/T 14048.8 low-voltage switchgear and control equipment Part 7-2. Protective conductor terminal auxiliary electrical copper conductors
Terminal block
--- GB 14048.9 low-voltage switchgear and control equipment Part 6-2. Multiple function equipment (equipment) electrical control and protection switch
Device (equipment) (CPS)
--- GB/T 14048.10 voltage switchgear and control equipment Part 5-2. Control circuit devices and switching elements proximity
switch
--- GB/T 14048.11 voltage switchgear and control equipment Part 6-1. Multiple function equipment - Transfer switching equipment
--- GB/T 14048.12 voltage switchgear and control equipment Part 4-3. Contactors and motor starters --- non-electric
Motivation load AC semiconductor controllers and contactors
--- GB/T 14048.13 voltage switchgear and control equipment Part 5-3. Control circuit devices and switching elements in ---
Proximity switches with defined behavior under fault conditions (PDF) requirements
--- GB/T 14048.14 voltage switchgear and control equipment Part 5-5. Control circuit devices and switching elements having ---
Mechanical latching function electrical emergency braking device
--- GB/T 14048.15 voltage switchgear and control equipment Part 5-6. Control circuit devices and switching elements connected ---
Proximity sensor and switching amplifier DC Interface (NAMUR)
--- GB/T 14048.16 voltage switchgear and control equipment - Part 8. rotary motor control with built - in thermal protection (PTC)
Unit
This section identical with IEC 60947-2.2006 "low-voltage switchgear and control equipment Part 2. Circuit Breaker" (fourth edition in English).
This part of IEC 60947-2.2006 Differences.
--- 1.1 on rated voltage, IEC defined as no more than 1000V, 1140V for AC rated voltage of the circuit breaker can be
Refer to this standard, performance and other requirements relating to the circuit breaker by the manufacturer and user consultation;
GB 14048.2-2008/IEC 60947-2.2006
--- Taking into account national circumstances, Chapter 3, "category" in the "open style" is not reasonable, still using the usual term "universal" type, plastic shell type, also known as
"Molded case" or "MCCB";
--- 8.1.2 Type tests on location, IEC regulations in the workshop or any other suitable test chamber factory was when my
Otherwise provided by national laws and regulations, in accordance with relevant regulations.
--- 8.3.3.3.2c) 2) regarding the maximum rated control supply voltage, IEC original 30%, the suspect is wrong, change it to 35%;
--- L. 1 CBI does not provide circuit protection, especially of overload.
This Part replaces GB 14048.2-2001 "Low-voltage switchgear and control equipment low voltage circuit breakers."
This section of the main differences with GB 14048.2-2001.
--- Clearly breaker shall be published impulse withstand voltage Uimp;
--- Clear insulating material resistant to abnormal heat and fire requirements.
Fixed to the main circuit conductor insulation material 960 ???;
Other Insulation Materials 650 ???.
Inter, but not more than 1h. Breakers should not be moved during this time, in the time trial reset switch on at least every other 1min;
--- Higher demands for electromagnetic compatibility.
In addition to electronic overcurrent protection circuit breakers, but its auxiliary components, such as. undervoltage release, shunt trip, closing coil, remote
Status indicators provides electromagnetic compatibility requirements, specified in Appendix N;
--- In the type test, the electromagnetic and electronic trip unit verification discrimination (see 8.3.3.1.2);
--- Increase in Appendix L, Appendix M, Appendix N, Appendix O.
Appendix L, Appendix M, Appendix O specifies the requirements and test methods for three new products.
Appendix L requirements without over-current protection circuit breaker, referred to CBI;
Appendix M of Residual Current Devices (Without Internal Current Breaking Device), referred MRCD;
Appendix O instantaneous trip circuit breakers, Acronym ICB;
Appendix N --- EMC is not included in the additional requirements and test Annex B, Appendix F and Appendix M of the Annex.
This section of the Appendix A, Appendix B, Appendix C, Appendix F, Appendix G, Appendix H, Appendix J, Appendix L, Appendix M, N and Appendices Appendix O
Normative annex, appendix E and K are informative appendix.
This part is proposed by the China Electrical Equipment Industrial Association.
The low-voltage electrical part by the National Standardization Technical Committee (SAC/TC189) centralized.
This part by the Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd. is responsible for drafting.
Participated in the drafting of this section. Changshu Switchgear Manufacturing Co., Ltd., Tianjin Baili Electric Co., Ltd., Shanghai People's electrical plant, Schneider
Electric (China) Investment Co., Ltd., Hangzhou, the switch Co., Ltd., Zhejiang Chint Electric Co., Ltd., Suzhou Wanlong Group has
Ltd., Delixi Electric Co., Ltd. Shanghai Siemens low-voltage circuit breakers, Tengen Group Co., Limited Huatong Electrical Group
The company, Tianshui Electric Co., Ltd. ??????????????? intelligent electrical switches, electrical switch Ltd. Zhejiang, Shanghai Liang letter
Electric Co., General Electric (China) Research and Development Center Co., Ltd., Zhejiang People Electric Co., Ltd., Ningbo Liaoyuan Electric Set
Group Co., Ltd. People Electric Group Co., Ltd., Beijing People's electrical plant, Universal Holdings Limited.
The main drafters of this section. Wan Shao You, Chen Zhengxin, Gu Huimin, Zhao.
The drafters of some of the participants. tube Rui Liang, Liufeng Kun Mou Jian, He Wei Wei, Hu Xuesong, Wang Taiyu, Cheng Yu-standard, Huang Rongrong, Gu Lili,
Wangxu Chuan, Feng Xinmin, Wang Xiuhua, Yang Weilong, Shao, Shao Yanqi, Feng Jifeng, Zhao Jianping, Zhu Yin set, Huang Zhang Wu, Nan Yin, Dai Guozhong.
This part of the standard replaces the previous editions are.
--- GB 14048.2-1994, GB 14048.2-2001.
GB 14048.2-2008/IEC 60947-2.2006
Low-voltage switchgear and control equipment
Part 2. Circuit Breaker
1 General
This section specifically referenced in GB 14048.1-2006 General provisions applicable to this section, any reference in this section of the article quoted General
Section, sub-clause, tables, figures and appendices are preceded by GB 14048.1-2006, Example. GB 14048.1-2006 in 1.2.3, GB 14048.1-
2006 or GB 14048.1-2006 Table 4 in Appendix A.
1.1 Scope and purpose
This section applies to the main contact for access to rated voltage not exceeding 1000V ac or 1500V dc circuit breaker. this
Section also specifies additional requirements of the circuit breaker with fuses.
This section applies to any circuit breaker rated current, a variety of structures of various types or intended use.
Requirements as a ground breaker protection included in Appendix B.
Electronic overcurrent protection circuit breaker Additional requirements included in Appendix F.
Additional requirements for the IT system of the circuit breaker is included in Appendix H.
Requirements and test methods for electromagnetic compatibility of the circuit breaker is included in Appendix J.
No over-current protection circuit breaker requirements included in Appendix L in.
Residual Current Devices (Without Internal Current Breaking Device) requirements included in Appendix M of.
Requirements and test methods for electromagnetic compatibility of circuit breaker accessories are included in the Appendix N.
Instantaneous tripping circuit breaker (ICB) requirements included in Appendix O of.
As a direct starter applications breaker 14048.4-2003 Supplementary requirements for low pressure in the contactor and starter GB
Provisions.
As the building requirements and similar establishments in wire protection, and non-skilled personnel designed for use in the circuit breaker
GB 10963 of the regulations.
Device (such as an electrical appliance) circuit breaker requirements specified in GB 17701-2008 in.
For certain purposes (for example traction, rolling mills and marine) of the circuit breaker, it may make some necessary special provisions and additional requirements.
Note. This section refers to the circuit breaker can be equipped with overcurrent and undervoltage except apparatus under predetermined conditions can be automatically disconnected, for example, the reverse current or reverse power off
Open devices. This section does not involve such a predetermined condition operation verification.
The purpose of this section is to provide.
Characteristics of a) the circuit breaker;
b) the circuit breaker under the following conditions shall comply with the conditions.
1) actions and performance during normal operation;
2) operation and performance under short-circuit conditions and overload conditions, including operation with the use (such as selectivity and back-up protection
Protection cooperation) operation and performance;
3) dielectric properties.
c) To prove the tests and test methods used to achieve the above conditions shall be carried out;
d) on the circuit breaker marked or given data.
1.2 Normative references
The following documents contain provisions which, through reference to "low-voltage switchgear and control equipment" in this section constitute provisions of this section. Every note
Dated references, subsequent amendments (excluding corrections) or revisions do not apply to this section, however, encourage root
This part of the study, according to the parties to reach an agreement whether the latest versions of these documents. For undated references, the latest edition
This applies to this section.
GB 14048.2-2008/IEC 60947-2.2006
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12h cycle) (IEC 60068-2-30.2005, IDT)
GB/T 2423.22-2002 Environmental testing for electric and electronic products Part 2. Test methods - Test N. Temperature change (idt IEC
60068-2-14. 1984)
GB/T 2828.1-2003 Sampling procedures for inspection - Part 1. Press the reception quality (AQL) retrieval batch count sampling inspection
Plan (ISO 2859-1.1999, IDT)
GB/T 2900.18-2008 Electrotechnical term low-voltage electrical
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