GB/T 14048.3-2017 English PDF (GB/T14048.3-2017)

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GB/T 14048.3-2017: Low-voltage switchgear and controlgear -- Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
GB/T 14048.3-2017
Low-voltage switchgear and controlgear -- Part 3. Switches, disconnectors, switch-disconnectors and fuse-combination units
ICS 29.120.40
K30
National Standards of People's Republic of China
Replace GB/T 14048.3-2008
Low voltage switchgear and control equipment
Part 3. Switches, isolators, disconnectors and
Fuse combination
Part 3. Switches, disconnectors, switch-disconnectorsandfuse-combinationunits
(IEC 60947-3.2015, IDT)
Released on.2017-12-29
2018-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Content
Foreword III
1 Basic requirements 1
1.1 Scope and purpose 1
1.2 Normative references 1
2 terms and definitions, index 3
2.1 Overview 3
2.2 Index 3
2.3 Terms and Definitions 3
2.4 Outline of Electrical Appliances Type 5
3 Category 6
3.1 Classification by use category 6
3.2 Classification by way of manpower handling of electrical appliances 6
3.3 Classification by isolation suitability 7
3.4 Classification by the degree of protection provided 7
4 Features 7
4.1 Feature Overview 7
4.2 Electrical Type 7
4.3 Main circuit rating 7
4.4 Use category 9
4.5 Control circuit 10
4.6 Auxiliary circuit 10
4.7 Relays and trip units 10
4.8 Coordination with short circuit protection device (SCPD) 10
5 Product Information 10
5.1 Type of information 10
5.2 Mark 10
5.3 Installation, Use and Maintenance Instructions 11
6 Normal use, installation and transportation conditions 11
7 Structural requirements and performance requirements 11
7.1 Structural requirements 11
7.2 Performance requirements 12
7.3 Electromagnetic Compatibility (EMC) 15
8 Test 17
8.1 Type of test 17
8.2 Type test on structural requirements 17
8.3 Type test on electrical performance 18
8.4 Electromagnetic Compatibility Test 31
8.5 Special test 32
Appendix A (Normative Appendix) Electrical appliances for direct switching of a single motor 33
Appendix B (informative) Article 38 to be agreed between the manufacturer and the user
Appendix C (Normative) Three-pole switch 39 for single pole operation
Appendix D (Normative Appendix) Photovoltaic switches, isolators, isolating switches and fuse combinations 41
Reference 51
Foreword
GB/T 14048 "Low-voltage switchgear and control equipment" currently includes the following 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 protectors);
--- Part 4-2. Contactors and motor starters - Semiconductor controllers and starters for AC motors (including soft starters);
---Part 4-3. Contactor and motor starters for non-motor load AC semiconductor controllers and contactors;
---Part 5-1. Control circuit electrical appliances and switching components electromechanical control circuit electrical appliances;
---Part 5-2. Control circuit electrical appliances and switching components proximity switches;
---Part 5-3. Control circuit electrical appliances and switching components with a defined function of proximity switches (PDF) under fault conditions
Claim;
---Part 5-4. Special test for performance evaluation methods for small-capacity contacts of control circuit and switching elements;
---Part 5-5. Electrical emergency brakes with control mechanical and switching elements with mechanical latching function;
---Parts 5-6. DC interface (NAMUR) for control circuit and switching element proximity sensors and switching amplifiers;
---Parts 5-7. Requirements for control circuit appliances and switching components for access devices with analogue outputs;
---Part 5-8. Control circuit electrical and switching components three-position enable switch;
---Parts 5-9. Control circuit electrical and switching component flow switches;
---Part 6-1. Multi-function electrical switchgear;
---Part 6-2. Multi-function electrical appliances (equipment) Control and protection switchgear (equipment) (CPS);
---Part 7-1. Terminal block for auxiliary device copper conductors;
--- Part 7-2. Protective conductor terminal block of auxiliary device copper conductor;
---Parts 7-3. Safety requirements for auxiliary device fuse terminal blocks;
--- Part 8. Load-in thermal protection (PTC) control unit for rotating electrical machines.
This part is the third part of GB/T 14048.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 14048.3-2008 "Low-voltage switchgear and control equipment - Part 3. Switches, isolators, disconnectors
And fuse combination electric appliance.
The main technical differences between this part and GB/T 14048.3-2008 are as follows.
---2 "Terms and definitions" in the deletion of "(mechanical) switch, isolating switch, multi-contact contact system, (mechanical switchgear) related manpower
Operation, (mechanical switchgear) irrelevant manpower operation, (mechanical switchgear electrical energy storage operation) definition, the above definition directly
Test IEC 60947-1, add a new term. "fuse the fuse group" "fuse switch" "isolator fuse" "fuse"
“Isolator Switch Fuse Group” and “Fuse Disconnect Switch” are divided into single breakpoint and double breakpoint, and
Add relevant terms and definitions under each clause;
--- Revised Table 1 "Outline of Electrical Appliance Definition" to add relevant definitions and graphical symbols;
--- Added 4.8 "Coordinated Coordination of Short Circuit Protection Devices (SCPD)";
--- Deleted 7.1.1, 7.1.2, 7.1.3, 7.1.4, 7.1.5 in "7.1 Structure Requirements", the relevant content directly refers to IEC 60947-1.
Amend the clause number 7.1.6 to 7.1.7, and delete 7.1.6.2, 7.1.6.3, and modify the clause number 7.1.8 to 7.1.9;
--- Added 7.2.1.2 "Operation range of power operated appliances", 7.2.1.3 "Operation range of undervoltage relays and trip units",
7.2.1.4 "Scope of action of the shunt release";
--- Table 3 adds remarks c, d;
--- Modified 7.3.1, 7.3.2, 7.3.2.1, 7.3.2.2, 7.3.3.1, the relevant content directly refers to IEC 60947-1, modify Table 6;
--- Removed 8.2.5.2 "Test Method" and 8.2.5.3 "Status of Electrical Apparatus During and after Test", directly related to
IEC 60947-1;
---8.3.2.1.3 a) Add a footnote to the footnote 2). Only the power factor is specified in the IEC original text, considering the test requirements of the DC product
Seeking, this section supplements the requirements for time constants;
--- Added 8.3.2.1.3 "Simplified Test Procedure" f);
--- Revised 8.3.3.1 "Temperature rise", 8.3.3.3.1 "Connecting and breaking capacity, test value and test conditions", 8.3.3.5 "Leakage current"
Relevant provisions;
---C.1 "Overview" delete paragraph 3 "If a three-pole operation switch with the same structure has been tested, for unipolar operation
The three-pole electrical appliance allows only the requirements of Appendix C to be met. ";
--- Added normative appendix D "Photovoltaic switches, isolators, disconnectors and fuse combinations".
This section uses the translation method equivalent to IEC 60947-3.2015 (Section 3.2) "Low-voltage switchgear and control equipment Part 3.
Switches, isolators, isolating switches and fuse combinations.
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
---GB/T 5465.2-2008 Graphical symbols for electrical equipment (IEC 60417-DB..2006, IDT);
---GB/T 9254-2008 Radio interference limits and measurement methods for information technology equipment (CISPR22.2006, IDT);
---GB/T 13539 (all parts) Low-voltage fuses (IEC 60269alparts);
---GB/T 14048.1-2012 Low-voltage switchgear and control equipment general (IEC 60947-1.2011, MOD);
--- GB/T 14048.2-2008 Low-voltage switchgear and control equipment - Part 2. Circuit breakers (IEC 60947-2.2006,
IDT);
--- GB/T 14048.4-2010 Low-voltage switchgear and control equipment - Part 4-1. Contactor and motor starter
Electrical contactors and motor starters (IEC 60947-4-1..2009, IDT);
--- GB/T 14048.5-2008 Low-voltage switchgear and control equipment - Part 5-1. Control circuit electrical and switching components
Electromechanical control circuit electrical appliances (IEC 60947-5-1.2003, MOD);
EMC-T 17626.2-2006 Electromagnetic compatibility (EMC) - Part 4-2. Test and measurement techniques Electrostatic discharge immunity test
Inspection (IEC 61000-4-2.2001, IDT);
--- GB/T 17626.3-2006 Electromagnetic compatibility (EMC) Part 4-3. Test and measurement techniques
Disturbance test (IEC 61000-4-3.2002, IDT);
EMC-T 17626.4-2008 Electromagnetic compatibility (EMC) Part 4-4. Test and measurement techniques
Immunity test (IEC 61000-4-4.2004, IDT);
--- GB/T 17626.5-2008 Electromagnetic compatibility (EMC) Part 4-5. Test and measurement techniques Surge (impact) immunity
Test (IEC 61000-4-5.2005, IDT);
--- GB/T 17626.6-2008 Electromagnetic compatibility (EMC) Part 4-6. Test and measurement techniques
Harassment immunity (IEC 61000-4-6.2006, IDT).
This section makes the following editorial changes according to the specific conditions of our country.
---IEC 60410.1973 "Counting Inspection Sampling Plans and Procedures" is currently abolished, revised edition of IEC SC121A related standards
In the article, the reference file for this technical content has been changed to ISO 2859-1, and its corresponding national standard is GB/T 2828.1-2012.
"Sampling sampling test procedures - Part 1. Batch-by-batch sampling plan by Retrieval of Acceptance Quality (AQL)",
Instead, the national standard GB/T 2828.1-2012 is cited.
This part was proposed by China Electrical Equipment Industry Association.
This part is under the jurisdiction of the National Low Voltage Apparatus Standardization Technical Committee (SAC/TC189).
This section drafted by. Shanghai Electric Apparatus Research Institute, Shanghai Dianke Electric Technology Co., Ltd., Changshu Switch Manufacturing Co., Ltd. (originally
Cooked switch factory), Legrand low voltage electrical (Wuxi) Co., Ltd., Shanghai Liangxin Electric Co., Ltd., Schneider Wangao (Tianjin) electrical equipment
Co., Ltd., Hangshen Group·Hangzhou Zhijiang Switch Co., Ltd., Shanghai Electric Ceramics Factory Co., Ltd., Hangzhou Ganlong Electric Co., Ltd.
Huanyu Group Co., Ltd., Gaomei Sokman Electric (Shanghai) Co., Ltd., General Electric Enterprise Development (Shanghai) Co., Ltd., Sanxin International
Electrical Appliances Shanghai Co., Ltd., People's Electric Group Co., Ltd., Shanghai Jingyi Electrical Appliances Co., Ltd., Siemens (China) Co., Ltd., Suzhou Electric
Institute of Science and Technology Co., Ltd., Huatong Electromechanical Co., Ltd., Delixi Electric Co., Ltd., Shanghai Hugong Electric Appliance Co., Ltd.,
Wenzhou Sanshi Electric Co., Ltd.
The main drafters of this section. Huang Yiye, Chen Zhengxin, Gu Huimin, Guan Ruiliang, Fu Kai, Qi Guoyun, Wang Jinxian, Dai Shuidong, Wang Biyun,
Zhong Fangqiang, Liu Guoxing, Ye Jianhua, Luo Liyang, Su Yulin, Li Zehui, Gu Dekang, Hu Hongyu, Zhang Min, Gao Wenle, Wu Jianbin, Liang Jinxing,
Huang Xuxiong.
The previous versions of the standards replaced by this section are.
---GB 14048.3-1993, GB 14048.3-2002, GB/T 14048.3-2008.
Low voltage switchgear and control equipment
Part 3. Switches, isolators, disconnectors and
Fuse combination
1 Basic requirements
The provisions of IEC 60947-1 General apply to the specific requirements in this section. Therefore, in the adoption of the provisions and sub-clauses, tables, diagrams
And appendix, can be found in IEC 60947-1, for example. see 4.3.4.1 of IEC 60947-1, Table 4 of IEC 60947-1, or
Appendix A of IEC 60947-1.
1.1 Scope and purpose
This part of GB/T 14048 is applicable to distribution circuits with rated voltage AC not exceeding 1000V or DC not exceeding 1500V.
Switch, isolator, disconnector and fuse combination in the motor circuit.
The manufacturer shall specify the type, rating and characteristics of the fuse in accordance with the relevant standards for the combined fuses.
This section does not apply to appliances included in the scope of IEC 60947-2, IEC 60947-4-1 and IEC 60947-5-1; however, if this part
Switching and fuse combinations within the range are typically used to start, accelerate, and/or stop a single motor and are subject to the provisions of Appendix A.
Additional requirements.
The requirements for a unipolarly operated three-pole switch are included in Appendix C.
The auxiliary switches used in electrical appliances within the scope of this section shall meet the requirements of IEC 60947-5-1.
This section does not include additional requirements for explosion-proof electrical appliances.
Note 1. A switch (or isolator) can be called "rotary switch (or rotary isolator)" "cam switch (or cam isolator)" "knife switch" according to its structure
(or knife-shaped isolator)" and so on.
Note 2. The term "switch" in this section may also refer to such appliances as "commutateurs" in French, which are used to change between several circuits.
The connection, in particular the replacement of another part of the appliance with a part of the circuit.
Note 3. This part of the switch, isolator, disconnector and fuse combination is often referred to as "electrical".
The purpose of this section is to specify.
a) Characteristics of the appliance.
b) relevant conditions for electrical appliances.
1) Operation and performance under normal conditions of use;
2) Operation and performance under specified abnormal conditions (such as short-circuit conditions);
3) Dielectric properties.
c) Tests that demonstrate compliance with these conditions and the methods used to perform these tests.
d) Data to be indicated on the appliance or data to be provided by the manufacturer (as in the catalog).
1.2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 2828.1-...