GB/T 14048.1: Evolution and historical versions
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PDF similar to GB/T 14048.1-2023
Basic data | Standard ID | GB/T 14048.1-2023 (GB/T14048.1-2023) | | Description (Translated English) | Low-voltage switchgear and controlgear - Part 1: General rules | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K30 | | Classification of International Standard | 29.130.01 | | Word Count Estimation | 244,239 | | Date of Issue | 2023-11-27 | | Date of Implementation | 2024-06-01 | | Older Standard (superseded by this standard) | GB/T 14048.1-2012 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 14048.1-2023: Low-voltage switchgear and controlgear - Part 1: General rules---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.
ICS 29:130:01
CCSK30
National Standards of People's Republic of China
Replace GB/T 14048:1-2012
Low voltage switchgear and control equipment
Part 1: General Provisions
(IEC 60947-1:2020, MOD)
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
PrefaceⅨ
Introduction
1 Scope 1
2 Normative references 1
3 Terms, definitions and symbols 4
3:1 Basic terms and definitions 4
3:2 Test 8
3:3 Port 8
3:4 Switching appliances 8
3:5 Components of switching appliances11
3:6 Switching electrical appliances15
3:7 Characteristic quantities 19
3:8 Symbols and references to properties in this document 27
4 Category 28
5 Features 28
5:1 Feature Summary 28
5:2 Electrical appliance type 28
5:3 Main circuit ratings and limits29
5:4 Usage Category 33
5:5 Control circuit 33
5:6 Auxiliary circuit 34
5:7 Relays and releases 34
5:8 Coordination with short circuit protection device (SCPD) 34
6 Product Information 34
6:1 Contents of the information34
6:2 Flag 35
6:3 Installation, operation and maintenance, decommissioning and disassembly instructions36
6:4 Environmental information 36
7 Normal conditions of use, installation and transportation36
7:1 Normal usage conditions 36
7:2 Transport and storage conditions38
7:3 Installation 38
8 Structural and performance requirements 38
8:1 Structural requirements 38
8:2 Performance requirements 44
8:3 Electromagnetic compatibility (EMC) 50
9 Trials 50
9:1 Classification of tests 50
9:2 Verification structural requirements 52
9:3 Verify performance requirements 57
9:4 EMC test 73
Appendix A (informative) Coordination of use categories of low-voltage switchgear and control equipment 102
Appendix B Blank 105
Appendix C (normative) Enclosure protection level of enclosed electrical appliances 106
Appendix D (informative) Examples of clamping parts and the relationship between clamping parts and connecting devices 112
Appendix E (Informative) Instructions for adjusting the load circuit method 118
Appendix F (informative) Determination of short-circuit power factor or time constant 120
F:1 Determination of short circuit power factor 120
F:2 Determination of short-circuit time constant (waveform diagram method) 120
Appendix G (informative) Measurement of electrical clearances and creepage distances 121
G:1 Basic requirements 121
G:2 Use of ribs 121
Appendix H (informative) The relationship between the nominal voltage of the power supply system and the rated impulse withstand voltage of the electrical appliance 126
Appendix I (normative) Moisture resistance performance and its requirements 127
I:1 Moisture resistance of electrical appliances127
I:2 Pre-test conditions of the electrical appliance under test 127
I:3 Test methods 127
I:4 Determination of test results 127
Appendix J (informative) Agreement terms involving manufacturers and users128
Appendix K (Normative) Steps for Determining Reliability Data for Electromechanical Appliances Used in Functional Safety Applications 129
K:1 General 129
K:2 Terms, definitions and symbols 129
K:3 Methods based on life test results130
K:4 Data information 134
K:5 Example 134
Appendix L (normative) Terminal markings and identification numbers 137
L:1 General 137
L:2 Impedance terminal designation (alphanumeric) 137
L:3 Terminal markings (numbers) for electrical contact elements with two-position switches 139
L:4 Marking of terminals of overload protection appliances 140
L:5 Distinguishing Number 141
L:6 Terminal markings for external electronic circuit components, contacts and complete machines 141
Appendix M (Normative) Flammability Test 145
M:1 Hot Wire Ignition Test (HWI) 145
M:2 Arc Ignition Test (AI) 146
M:3 HWI and AI requirements 147
Appendix N (normative) Performance requirements and test methods for electrical appliances with protective isolation 149
N:1 Overview 149
N:2 Terms and Definitions 149
N:3 Performance Requirements150
N:4 Test requirements 151
Appendix O (Informative) Environmentally Aware Design 153
O:1 General 153
O:2 Scope of this Appendix 153
O:3 Terms and Definitions 153
O:4 General considerations156
O:5 Basic requirements for environmentally conscious design (ECD) 158
O:6 Environmentally Conscious Design Process (ECD Process) 158
O:7 ECD tools in product design and development 159
O:8 Relevant ISO technical committee 159
Appendix P (informative) Terminal lugs for low-voltage switchgear and control equipment connected to copper conductors 161
Appendix Q (Normative) Special Tests---Environmental Test Catalog 162
Q:1 General Principles 162
Q:2 Equipment classification162
Q:3 Test 163
Appendix R (normative) Application of metal foil for dielectric testing of accessible parts during operation and adjustment 168
R:1 General 168
R:2 Purpose 168
R:3 device partition 168
Appendix S (Normative) Digital Inputs and Outputs 174
S:1 Summary 174
S:2 Terms and Definitions 174
S:3 Functional Requirements 174
S:4 Verification of input/output requirements 182
S:5 General information provided by the manufacturer184
S:6 Digital Input Standard Operating Range Formula 185
Appendix T (Normative) Extended functions of electronic overload relay 186
T:1 General 186
T:2 Terms and Definitions 186
T:3 Classification of electronic overload relays 187
T:4 Types of relays with earth/earth fault detection 187
T:5 performance requirements 187
T:6 Test 188
T:7 Routine testing and sampling testing189
Appendix U (informative) Control circuit configuration example 191
U:1 External control device (ECD) 191
Configuration of U:2 control circuit 191
Appendix V (informative) Electrical energy efficiency management of switchgear and control equipment 194
V:1 General Principles 194
V:2 Purpose 194
V:3 Terms and Definitions 194
V:4 Electrical energy efficiency and safety 195
V:5 Basic principles of electrical energy efficiency (system approach) 195
V:6 Energy Efficiency Application 195
Appendix W (Normative) Procedure for developing materials declarations 197
W:1 Overview 197
W:2 Purpose 197
W:3 Terms and Definitions 197
W:4 Material Declaration Requirements198
W:5 Example of Material Declaration under W:4198
Appendix
X:1 General Chapter 204
X:2 Purpose 204
X:3 General requirements for cooperation of a circuit breaker or CPS with another SCPD 204
X:4 Series SCPD types and characteristics 205
X:5 Selective Authentication 205
X:6 Fallback Protection Verification 207
Reference 214
Index 217
Figure 1 Test equipment for bending test 88
Figure 2 Type A and Type B analog gauges 88
Figure 3 Test circuit diagram for unipolar electrical appliances to verify the making and breaking capabilities of single-phase AC or DC 89
Figure 4 Test circuit diagram for bipolar electrical appliances to verify the making and breaking capabilities of single-phase AC or DC 90
Figure 5 Test circuit diagram for verifying the making and breaking capabilities of three-pole electrical appliances 91
Figure 6 Test circuit diagram for verifying the making and breaking capabilities of four-pole electrical appliances 92
Figure 7 Under ideal conditions, a simple diagram of the recovery voltage across the first arc-extinguished contact 93
Figure 8 Principle diagram of load circuit adjustment method 94
Figure 9 Test circuit diagram for unipolar electrical appliances to verify the making and breaking capabilities of single-phase AC or DC short circuit 95
Figure 10 Test circuit diagram for bipolar electrical appliances to verify the making and breaking capabilities of single-phase AC or DC short circuit 96
Figure 11 Test circuit diagram for three-pole electrical appliances to verify short circuit making and breaking capabilities97
Figure 12 Test circuit diagram for four-pole electrical appliances to verify short-circuit making and breaking capabilities98
Figure 13 Example of waveform recording for single-phase AC short-circuit making and breaking tests of unipolar appliances99
Figure 14 Verification of DC short circuit making and breaking capabilities 100
Figure 15 Determination of expected breaking current when the set current obtained from the first test circuit setting is lower than the rated breaking capacity 101
Figure 16 Actuator test force 101
Figure D:1 Clamping piece inside the connecting appliance 112
Figure D:2 Screw type clamp 113
Figure D:3 Column clamp 114
Figure D:4 Bolt type clamp 115
Figure D:5 Saddle clamp 115
Figure D:6 Lug type clamp 116
Figure D:7 Hood clamp 117
Figure D:8 Threadless clamping piece (simple diagram) 117
Figure E:1 Method of determining the actual value of coefficient γ119
Figure G:1 Measurement of ribs 121
Figure G:2 Creepage distances between fixed and movable insulating parts for contact support122
Figure G:3 Example 1 122
Figure G:4 Example 2 122
Figure G:5 Example 3 123
Figure G:6 Example 4 123
Figure G:7 Example 5 123
Figure G:8 Example 6 123
Figure G:9 Example 7 124
Figure G:10 Example 8 124
Figure G:11 Example 9 124
Figure G:12 Example 10 125
Figure G:13 Example 11 125
Figure K:1 Weibull median rank regression plot 136
Figure M:1 Hot wire ignition test device 145
Figure M:2 Arc ignition test circuit diagram 146
Figure N:1 Example of application of components connected to isolation circuit 151
Figure O:1 Framework of the relationship between provisions in product standards and product-related environmental impacts during the product life cycle 157
Figure O:2 Overview of the ECD process 158
Figure P:1 Dimensions 161
Figure R:1 Operating mechanism outside the housing 169
Figure R:2 Application of metal foil in switch actuator working area 170
Figure R:3 Example of finger-shaped protected area for hazardous live parts near push buttons171
Figure R:4 Application example of metal foil 171
Figure R:5 Application example 2 of metal foil 172
Figure R:6 Application example three of metal foil 172
Figure R:7 Application of metal foil on holes and slots 173
Figure R:8 Operation space for rotation operation 173
Figure S:1 I/O parameters 176
Figure S:2 UI workspace for current sink input 177
Figure S:3 Temporary overload waveform of AC digital output 179
Figure S:4 Temporary overload waveform of DC digital output 181
Figure T:1 Test circuit to verify the operating characteristics of electronic earth/ground fault current protection overload relay 190
Figure U:1 Diagram of externally controlled electrical appliances 191
Figure U:2 Single power supply and control input 192
Figure U:3 Independent power and control inputs 192
Figure U:4 Appliances with multiple external control power supplies 192
Figure U:5 Appliances with bus interface 193
Figure W:1 Example of main information and business information, XML code illustration:200
Figure W:2 Product information example, XML code illustration:201
Figure W:3 Example of declared substance information, XML code illustration 202
Figure W:4 Example of material category information, XML code illustration 203
Figure X:1 Overcurrent cooperation between circuit breaker or CPS and fuse or backup protection of fuse: operating characteristics 209
Figure X:2 Total selectivity between two circuit breakers or circuit breaker and CPS210
Figure X:3 Backup protection of circuit breaker or CPS --- operating characteristics 211
Figure
Figure X:5 Example of test circuit to verify selectivity 213
Table 1 Nominal cross-sectional area of round copper conductors and approximate relationship between mm2 and AWG/kcmil dimensions 74
Table 2 Terminal temperature rise limit 75
Table 3 Temperature rise limits for accessible parts 75
Table 4 Tightening torque to verify the mechanical strength of screw terminals76
Table 5 Round copper conductor pull-out and bending test values 76
Table 6 Flat copper conductor pull-out test values 77
Table 7 Maximum conductor cross-sections and corresponding analog gauges77
Table 8 Correspondence between conductor cross-sectional area and diameter 78
Table 9 Test copper conductors with test currents of 400A and below 80
Table 10 Test copper conductors with test current greater than 400A but not exceeding 800A80
Table 11 Test copper bars with test current greater than 400A but not exceeding 3150A 81
Table 12 Impulse withstand voltage 81
Table 13 Minimum electrical clearances in air82
Table 14 Test voltage between disconnecting contacts of isolating appliance 82
Table 15 Minimum creepage distance 83
Table 16 Power factor, time constant and ratio of current peak value to effective value n 84 corresponding to test current
Table 17 Actuator test force 84
Table 18 Tolerances for test parameters 84
Table 19 Dielectric test voltage corresponding to rated insulation voltage 85
Table 20 Test values for catheter pull-out test 85
Table 21 Test values for conduit bending test 85
Table 22 Test values for conduit torsion test 86
Table 23 EMC test---Immunity 86
Table 24 Acceptance criteria in the presence of electromagnetic interference 87
Table 25 Cross-sectional area of copper protective conductor 87
Table A:1 Usage category 102 used in GB/T 14048 series standards
Table C:1 IP code 108
Table G:1 Minimum width of slots121
Table H:1 When overvoltage protection is provided by a surge suppressor specified in IEC 60099-1, the nominal voltage of the power system is the same as
Correspondence of rated impulse withstand voltage of circuit 126
Table K:1 Failure modes of electrical appliances 131
Table K:2 Example of 15 electrical appliances arranged in order of failure134
Table K:3 Median rank calculation example 135
Table M:1 HWI and AI properties of materials required to secure current-carrying parts 147
Table M:2 HWI and AI properties of materials outside the scope of Table M:1 148
Table P:1 Examples of terminal lugs for low-voltage switchgear and controlgear connected to copper conductors 161
Table Q:1 Test sequence 164
Table S:1 Ratings and operating range of input power supply175
Table S:2 Standard operating range of digital inputs (current sinks) 177
Table S:3 Ratings and operating ranges of AC current source digital outputs 179
Table S:4 Ratings and operating range of DC current source digital output (DC) 181
Table S:5 Overload test and short circuit test of digital output 183
Table T:1 Action time of ground/ground fault relay 187
Table W:1 Example of main information and business information in tabular form:199
Table W:2 Example of product information in tabular form:200
Table W:3 Example of declared substance information in tabular form:201
Table W:4 Example of material category information in tabular form 202
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 1 of GB/T 14048 "Low-voltage switchgear and control equipment": GB/T 14048 has released the following
part:
---Part 1: General provisions;
---Part 2: Circuit breakers;
---Part 3: Switches, isolators, isolating switches and fuse combination electrical appliances;
---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: Contactors and motor starters AC semiconductor controllers and contactors for non-motor loads;
---Part 5-1: Control circuit appliances and switching elements Electromechanical control circuit appliances;
---Part 5-2: Control circuit electrical appliances and switching elements proximity switches;
---Part 5-3: Control circuit appliances and switching elements for proximity switches with defined functions under fault conditions (PDDB)
Require;
---Part 5-4: Special tests for performance evaluation methods of small-capacity contacts of control circuit appliances and switching components;
---Part 5-5: Electrical emergency braking device with mechanical latch function for control circuit appliances and switching elements;
---Part 5-6: DC interface for control circuit electrical appliances and switching elements proximity sensors and switching amplifiers (NAMUR);
---Part 5-7: Requirements for control circuit appliances and switching elements for proximity devices with analog outputs;
---Part 5-8: Control circuit electrical appliances and switching elements three-position enable switch;
---Part 5-9: Control circuit electrical appliances and switching elements flow switches;
---Part 6-1: Multifunctional electrical switching appliances;
---Part 6-2: Multifunctional electrical appliances (equipment) control and protection switching appliances (equipment) (CPS);
---Part 7-1: Terminal strips for copper conductors of auxiliary devices;
---Part 7-2: Protective conductor terminal blocks for copper conductors of auxiliary devices;
---Part 7-3: Safety requirements for auxiliary device fuse terminal blocks;
---Part 7-4: PCB terminal strips for copper conductors of auxiliary devices;
---Part 8: Built-in thermal protection (PTC) control unit for rotating electrical machines;
---Part 9-1: Arc fault active suppression system arc extinguishing appliances:
This document replaces GB/T 14048:1-2012 "Low-voltage switchgear and control equipment Part 1: General provisions" and is consistent with GB/T 14048:1-2012
In comparison, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
---Added provisions that are not applicable to this document (see Chapter 1);
---Changed terms and definitions (see Chapter 3);
---Clearly the symbol of the rated limited short-circuit current is Iq or Icc, Iq is used for starters, and Icc is used for switches and circuit breakers (see 5:3:6:4);
---Added the requirements for the pole impedance of switching appliances and deleted the requirements for overvoltage during on-off operation (see 5:3:7, 4:9 of the:2012 edition);
--- Added provisions for environmental information (see Chapter 6);
--- Added requirements for "insulating matching partitions for creepage distances" and "insulating matching partitions for electrical clearances" (see 8:1:4:2 and
8:1:4:3);
--- Added requirements and tests for protective grounding continuity (see 8:1:10:4 and 9:2:9);
---Dielectric properties increase DC withstand voltage requirements (see 8:2:3);
---Added "special test" (see 9:1:5);
--- Added Appendix K (normative) steps for determining reliability data of electromechanical appliances used in functional safety applications;
---Added Appendix W (normative) procedures for formulating material declarations;
---Added Appendix
Cooperate:
This document is modified to adopt IEC 60947-1:2020 "Low-voltage switchgear and control equipment Part 1: General provisions":
Compared with IEC 60947-1:2020, this document has made the following structural adjustments:
---3:1 corresponds to 3:3 of IEC 60947-1:2020, 3:2 corresponds to 3:8 of IEC 60947-1:2020, 3:3 corresponds to IEC 60947-1:
3:9 in 2020;
---Delete W:3, and postpone the following article numbers;
---The index corresponds to 3:2 of IEC 60947-1:2020:
The technical differences between this document and IEC 60947-1:2020 and their reasons are as follows:
---Replaced IEC 60695-11-10:2013 with normatively quoted GB/T 2408 to adapt to my country's technical conditions and increase availability
Operability (see 9:2:2:2, Table M:1, Table M:2);
---Replaced ISO 3864-2 with normatively quoted GB/T 2893:2 to adapt to my country's technical conditions and increase operability (see
6:3);
---Replaced CISPR11 with the normatively quoted GB 4824 to adapt to my country's technical conditions and increase operability (see 8:3:3);
---Replaced IEC 60695-2-12 with normatively cited GB/T 5169:12 to adapt to my country's technical conditions and increase operability
Sex (see 8:1:2:2);
---Replaced CISPR32 with normatively quoted GB/T 9254:1 to adapt to my country's technical conditions and increase operability (see
8:3:3);
---Replaced IEC 60216-2 with normatively quoted GB/T 11026:2 to adapt to my country's technical conditions and increase operability
(See 8:2:2:1);
---Replaced IEC 60269-1:2006/AMD2:2014 with normatively cited GB/T 13539:1 to adapt to my country's technology
conditions, increase operability (see X:6:4);
---Replaced IEC 60947-2:2016/AMD1:2019 with normatively cited GB/T 14048:2-2020 to adapt to our country
technical conditions and increase operability (see X:5:3, X:6:2, X:6:3);
---Replaced IEC 60947-5-1 with normatively quoted GB/T 14048:5 to adapt to my country's technical conditions and increase operability
(See 8:1:7:2, S:3:2:3:3:5, S:4:3:1);
---Replaced IEC 60947-8 with normatively quoted GB/T 14048:16 to adapt to my country's technical conditions and increase operability
(See L:6:1:2:4);
---Replaced IEC 61000-4-3 with normatively quoted GB/T 17626:3 to adapt to my country's technical conditions and increase operability
(See 9:4:2:3, Table 23);
---Replaced IEC 61000-4-4 with normatively cited GB/T 17626:4 to adapt to my country's technical conditions and increase operability
(See 9:4:2:5, Table 23);
---Replaced IEC 61000-4-5 with normatively cited GB/T 17626:5 to adapt to my country's technical conditions and increase operability
(See 9:4:2:6, Table 23);
---Replaced IEC 61000-4-6 with normatively quoted GB/T 17626:6 to adapt to my country's technical conditions and increase operability
(See 9:4:2:4, Table 23);
---Replaced IEC 61000-4-8 with normatively cited GB/T 17626:8 to adapt to my country's technical conditions and increase operability
(9:4:2:7, Table 23);
---Replaced IEC 61000-4-11 with normatively quoted GB/T 17626:11 to adapt to my country's technical conditions and increase operability
Sex (9:4:2:8, Table 23);
---Replaced IEC 61000-4-34 with normatively quoted GB/T 17626:34 to adapt to my country's technical conditions and increase operability
Sex (see 9:4:2:8, Table 23);
---Replaced IEC 61180:2016 with normatively cited GB/T 17627-2019: The degree of consistency between the two documents is
Modify to adapt to my country's technical conditions and increase operability (see 9:3:3:4:1);
---Replaced IEC 61000-6-5 with normatively quoted GB /Z 17799:6 to adapt to my country's technical conditions and increase operability
(See 9:4:2:1);
---Replaced IEC 61557-2 with normatively cited GB/T 18216:2 to adapt to my country's technical conditions and increase operability
(See Table Q:1);
---Replaced IEC 60664-1:2007 with normatively cited GB/T 16935:1-2023 to adapt to my country's technical conditions and increase
Add operability (8:2:3:1, Table 19, N:3:2:2);
---The "qualification mark or certification mark (if applicable)" is added to the mark (see 6:2);
---Appendix I is blank in the IEC version of the adopted standard: However, considering the vast territory of our country and the changeable climate conditions, this document is in the appendix:
Part I supplements the requirements and test methods for moisture resistance of low-voltage electrical appliances: Appendix I specifies that for products intended for use in ambient air
For electrical appliances whose temperature does not exceed 40°C, priority is given to testing at a severe level with a high temperature of 40°C and a cycle number of 6 days and nights:
For electrical appliances that are expected to be used with an upper limit of ambient air temperature higher than 40°C and not exceeding 55°C, please refer to Appendix Q:
Test according to relevant regulations (see Appendix I):
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by the China Electrical Equipment Industry Association:
This document is under the jurisdiction of the National Low Voltage Electrical Equipment Standardization Technical Committee (SAC/TC189):
This document was drafted by: Shanghai Electrical Equipment Research Institute, Shanghai Electrical Equipment Research Institute (Group) Co:, Ltd:, Changshu Switch Manufacturing Co:, Ltd:
The company (formerly Changshu Switch Factory), Zhejiang Chint Electric Co:, Ltd:, Shanghai Liangxin Electric Co:, Ltd:, and Schneider Electric (China) have
Co:, Ltd: Shanghai Branch, Shanghai Electric Co:, Ltd: People's Electric Appliance Factory, Delixi Electric Co:, Ltd:, Wank Electronics (Tianjin) Co:, Ltd:
Division, Siemens (China) Co:, Ltd:, Zhejiang Tianzheng Electric Co:, Ltd:, Zhejiang People's Electric Co:, Ltd:, Hangzhou Zhijiang Switch Co:, Ltd:
Co:, Ltd:, Xiamen ABB Low Voltage Electrical Equipment Co:, Ltd:, Sibel Electric Co:, Ltd:, Legrand Low Voltage Electrical Equipment (Wuxi) Co:, Ltd:,
Tyco Electronics (Shenzhen) Co:, Ltd:, Omron Automation (China) Co:, Ltd:, Zhejiang Jinlaile Electric Co:, Ltd:, Zhejiang Keruip Electric
Co:, Ltd:, Suzhou Wanlong Electric Group Co:, Ltd:, Shanghai Chint Intelligent Technology Co:, Ltd:, Qingdao Dingxin Communications Co:, Ltd:,
Hebei Baokai Electric Co:, Ltd:, Huatong Mechanical and Electrical Co:, Ltd:, Andeli Group Co:, Ltd:, Zhejiang Minghui Intelligent Electric Co:, Ltd:
Company, Ruirui Electric (Zhejiang) Co:, Ltd:, Xinchi Electric Group Co:, Ltd:, Zhejiang Jubang Electric Co:, Ltd:, Lexing Electric (Wuxi) have
Co:, Ltd:, Suzhou Siemens Electric Co:, Ltd:, Great Wall Electric Group Zhejiang Technology Co:, Ltd:, Zhejiang Dahua Technology Co:, Ltd:, Ningbo
Qile Electric Group Co:, Ltd:, Tyson Krod Group Co:, Ltd:, China International Engineering Design and Research Institute Co:, Ltd:, Meigao Electric
Technology Co:, Ltd:, Gongli Automation Technology (Ningbo) Co:, Ltd:, Jiangsu Miter Internet of Things Technology Co:, Ltd:, Ningbo Bull Low Voltage Electric Co:, Ltd:
Co:, Ltd:, Shenzhen Weikete Electronic Technology Co:, Ltd:, Shide Electric Group Co:, Ltd:, Wuxi Xinhongtai Electrical Technology Co:, Ltd:,
Jiangsu Luocheng Electric Technology Co:, Ltd:, Guizhou Taiyong Changzheng Technology Co:, Ltd:, Zhejiang Baichen Electric Co:, Ltd:, Garcia Electronics
Appliance Co:, Ltd:, Qianyou Technology Co:, Ltd:, Shanghai Liangcheng Mechanical and Electrical Technology Co:, Ltd:, Zhejiang Aolai Electric Co:, Ltd:, Zhejiang Benyidian
Gas Co:, Ltd:, Xiamen Hongfa Switchgear Equipment Co:, Ltd:
The main drafters of this document: Yin Tianwen, Ji Huiyu, Guan Ruiliang, Xiao Tifeng, Zhang Guangzhi, Liu Zhenzhong, Fan Kun, Wu Jianbin, Wang Fang, Li Hui,
Ge Shiwei, Bao Zhizhou, Dai Shuidong, Lin Qingquan, Su Haichao, Fu Kai, Gao Wei, Yang Jingcong, Fan Lin, Hu Changyong, Cheng Yubiao, Guo Dexin, Wang Jianhua,
Meng Lei, Wang Zhiyong, Liu Zhong, Xu Bo, Wu Qijun, Xia Chuyang, Chen Jun, Wu Jianbo, Zhu Lin, Ye Gaopei, Liu Ming, Feng Liben, Chen Liang, Wang Jianfeng,
Xu Xiangbing, Peng Jun, Zhang Jianxing, Zhang Shenhu, Hao Ming, He Kaiqiang, Chen Xueqin, Bao Ge, Xue Jianhu, Pan Binhua, Huang Zhengqian, Yang Jianfeng, Zhang Xinyu,
Zeng Yi, Xu Wenliang, Lin Kai, Wang Renyuan, Zhang Xieli:
The previous versions of this document and the documents it replaces are as follows:
---First published as GB/T 14048:1-1993 in:1993, revised for the first time in:2000, revised for the second time in:2006, and third revised in:2012
revision;
---This is the fourth revision:
Introduction
Low-voltage switchgear and control equipment are available in a wide range of products, including circuit breakers, isolators, isolating switches and fuse combination appliances, and connectors:
Contactors and starters are widely used in various fields such as machinery, electricity, and electronics, involving many aspects such as the control and distribution of electric energy:
GB/T 14048 "Low-voltage switchgear and control equipment" is an important series of standards guiding my country's low-voltage switchgear and control equipment related products:
It is intended to be composed of 25 parts:
---Part 1: General principles: The purpose is to specify the general requirements for low-voltage switchgear and control equipment:
---Part 2: Circuit breakers: The purpose is to stipulate the performance requirements and test methods of circuit breakers and other product-related requirements:
---Part 3: Switches, isolators, isolating switches and fuse combination electrical appliances: The purpose is to specify switches, isolators, isolating switches
And product-related requirements such as performance requirements and test methods for fuse combination appliances:
---Part 4-1: Contactors and motor starters Electromechanical contactors and motor starters (including motor protectors): Head
The purpose is to stipulate the performance requirements and test methods of electromechanical contactors and motor starters (including motor protectors) and other product related products:
related requirements:
---Part 4-2: Contactors and motor starters Semiconductor controllers and starters for AC motors (including soft starters):
The purpose is to stipulate the performance requirements and test methods of semiconductor controllers and starters (including soft starters) for AC motors:
product-related requirements:
---Part 4-3: Contactors and motor starters AC semiconductor controllers and contactors for non-motor loads: The purpose is
It stipulates product-related requirements such as performance requirements and test methods for AC semiconductor controllers and contactors for non-motor loads:
---Part 5-1: Control circuit appliances and switching elements Electromechanical control circuit appliances: The purpose is to specify electromechanical control circuits
Product-related requirements such as performance requirements and test methods for circuit electrical appliances:
---Part 5-2: Control circuit electrical appliances and switching elements proximity switches: The purpose is to specify the performance requirements and testing of proximity switches:
testing methods and other product-related requirements:
---Part 5-3: Requirements for proximity switches (PDDB) that control circuit appliances and switching elements with specified functions under fault conditions
beg: The purpose is to stipulate product-related performance requirements and test methods for proximity switches with certain functions under fault conditions:
Require:
---Part 5-4: Special tests for performance evaluation methods of small-capacity contacts of control circuit appliances and switching components: The purpose is
Specifies special test requirements for performance evaluation of small capacity contacts:
---Part 5-5: Electrical emergency braking device with mechanical latch function for control circuit appliances and switching elements: The purpose is
Specifies product-related requirements such as performance requirements and test methods for electrical emergency braking devices with mechanical latch functions:
---Part 5-6: DC interface for control circuit electrical appliances and switching elements proximity sensors and switching amplifiers (NAMUR):
The purpose is to specify product-related requirements such as performance requirements and test methods for the DC interface of proximity sensors and switching amplifiers:
---Part 5-7: Requirements for control circuit appliances and switching elements for proximity devices with analog outputs: The purpose is to stipulate
Product-related requirements such as performance requirements and test methods for proximity equipment with analog output:
---Part 5-8: Control circuit electrical appliances and switching elements three-position enable switch: The purpose is to specify the performance of the three-position enable switch
requirements and test methods and other product-related requirements:
---Part 5-9: Control circuit electrical appliances and switching elements flow switches: The purpose is to specify the performance requirements and testing of flow switches:
testing methods and other product-related requirements:
---Part 6-1: Multifunctional electrical switching appliances: The purpose is to stipulate the performance requirements and test methods of transfer switch appliances:
Law and other product-related requirements:
---Part 6-2: Multifunctional electrical appliances (equipment) control and protection switching electrical appliances (equipment) (CPS): The purpose is to provide control and
Product-related requirements such as performance requirements and test methods for protective switching appliances:
---Part 7-1: Terminal strips for copper conductors of auxiliary devices: The purpose is to specify the performance requirements of copper conductor terminal blocks:
Ask for product-related requirements such as test methods:
---Part 7-2: Protective conductor terminal block for copper conductors of auxiliary devices: The purpose is to specify the protective conductor connection of copper conductors
Product-related requirements such as performance requirements and test methods for wire terminal blocks:
---Part 7-3: Safety requirements for auxiliary device fuse terminal blocks: The purpose is to specify the fuse terminal strip
Security related requirements:
---Part 7-4: PCB terminal strips for copper conductors of auxiliary devices: The purpose is to specify PCB terminal strips for copper conductors
Product-related requirements such as performance requirements and test methods:
---Part 7-5: Terminal strips for aluminum conductors of auxiliary devices: The purpose is to specify the performance requirements of aluminum conductor terminal blocks:
Ask for product-related requirements such as test methods:
---Part 8: Built-in thermal protection (PTC) control unit for rotating electrical machines: The purpose is to specify built-in thermal insulation for rotating electrical machines
Protection (PTC) control unit performance requirements and test methods and other product-related requirements:
---Part 9-1: Arc fault active suppression system arc extinguishing appliances: The purpose is to specify the performance requirements and testing of arc extinguishing appliances
Methods and other product-related requirements:
---Part 9-2: Arc fault active suppression system Internal arc detection and suppression equipment based on optical signals: The purpose is to regulate
Establish product-related requirements such as performance requirements and test methods for internal arc detection and suppression equipment based on optical signals:
The purpose of this document is to harmonize, as far as possible, all rules and requirements applicable to the basic performance of low-voltage switchgear and controlgear in order to
Obtain unified requirements and tests within the corresponding equipment range to avoid the same product needing to be tested according to different standards:
This document contains all the content considered to be basic requirements in various product standards as well as specific items with wide significance and application:
Objectives, such as temperature rise, dielectric properties, etc:
For each type of low-voltage switchgear and controlgear, only two main standards are required to determine all requirements and tests:
a) This document, in the standards for various types of low-voltage switchgear and control equipment, is referred to as: "Part 1" or "GB/T 14048:1";
b) Relevant product standards, hereinafter referred to as "relevant product standards" or "this series of product standards":
The general rules applicable to a specific product standard should be clearly stated in the product standard, and the reference to GB/T 14048:1 document should be marked:
Specific product standards may differ from general rules only if there are good technical reasons:
Note: The "product standards" mentioned in this document refer to "GB/T 14048 series product standards":
Low voltage switchgear and control equipment
Part 1: General Provisions
1 Scope
This document specifies the general rules and general safety requirements for low-voltage switchgear and control equipment: It includes:
---definition;
---characteristic;
---Related information about electrical appliances;
---Normal use, installation and transportation conditions, as well as decommissioning and disassembly;
---Structural and performance requirements;
---Features and performance verification;
---Energy efficiency factors (see Appendix V);
---envirnmental factor:
This document applies (when required by relevant product standards) to low-voltage switchgear and control equipment (hereinafter referred to as "equipment" or "electrical equipment"):
""), this equipment or appliance is intended for connection to a circuit with a rated voltage not exceeding 1000V AC or 1500V DC: 1)
1) Electrical appliances with an AC rated voltage of 1140V may refer to this document: Requirements related to the performance of electrical appliances are determined through negotiation between the manufacturer and the user:
This document does not apply to:
---Low-voltage switchgear and control equipment involved in IEC 61439 (all parts), if applicable;
---Terminals for connecting aluminum conductors;
Note: Terminal blocks for aluminum conductors are considered in the next revision:
---Use in explosive atmospheres [see IEC 60079 (all parts)];
---Software and firmware requirements for functional safety applications (see GB/T 20438:3);
---Network security factors [see IEC 62443 (all parts)]:
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 2408 Horizontal and vertical methods for determination of combustion properties of plastics (GB/T 2408-2021, IEC 60695-11-10:
2013,MOD)
GB/T 2421-2020 Environmental Testing Overview and Guidelines (IEC 60068-1:2013,IDT)
GB/T 2423:1-2008 Environmental testing of electrical and electronic products Part 2: Test methods Test A: Low temperature (IEC 60068-2-
1:2007,IDT)
GB/T 2423:2-2008 Environmental testing of electrical and electronic products Part 2: Test methods Test B: High temperature (IEC 60068-2-
2:2007,IDT)
GB/T 2423:3-2016 Environmental testing Part 2: Test method Test Cab: Constant humidity and heat test (IEC 60068-2-
78:2012,IDT)
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