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GB/T 37144-2018: Cabinets for low-voltage switchgear -- Electrical mechanical structures
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 37144-2018 | English | 439 |
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Cabinets for low-voltage switchgear -- Electrical mechanical structures
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GB/T 37144-2018
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Basic data | Standard ID | GB/T 37144-2018 (GB/T37144-2018) | | Description (Translated English) | Cabinets for low-voltage switchgear -- Electrical mechanical structures | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K05 | | Classification of International Standard | 31.240 | | Word Count Estimation | 22,276 | | Date of Issue | 2018-12-28 | | Date of Implementation | 2019-07-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 37144-2018: Cabinets for low-voltage switchgear -- Electrical mechanical structures---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.
Cabinets for low--voltage switchgear--Electrical mechanical structures
ICS 31.240
K05
National Standards of People's Republic of China
Low-voltage cabinet electrical and mechanical structure
Published on.2018-12-28
2019-07-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 Environmental adaptability 2
4.1 Requirements 2
4.2 Inspection and testing 2
4.3 Qualification judgment 2
5 surface 2
5.1 Requirements 2
5.2 Inspection and testing 3
5.3 Qualification Decision 3
6 insulation performance 3
6.1 Clearance 3
6.2 Creepage distance 4
6.3 Insulation resistance 5
6.4 Leakage current 5
6.5 Surface resistance mark 5
6.6 Withstand voltage test capability 5
6.7 Withstand AC power frequency voltage test capability 6
6.8 Temperature rise 7
6.9 Heat-resistant wire test 8
7 Electrical performance 8
7.1 Conductivity of conductor parts or components 8
7.2 Loop resistance (including loop resistance difference between phases) 8
7.3 Rating 9
7.4 Requirements for terminals 9
7.5 Protective earthing requirements 9
7.6 Normal load and overload characteristics (for main circuit) 10
7.7 Short circuit characteristics (for main circuit) 10
8 Mechanical properties 10
8.1 Impact 10
8.2 Collision 11
8.3 Free fall 11
8.4 Vibration 12
8.5 Mechanical life 12
9 enclosure protection class 12
9.1 Requirements 12
9.2 Inspection and testing 13
9.3 Qualification judgment 13
10 Information 13
10.1 Rating 13
10.2 Sign Identification 13
10.3 User Manual 14
11 Inspection rules 14
11.1 Inspection Classification 14
11.2 Inspection Report 14
Appendix A (informative) Type test items for different electrical and mechanical structure products 15
Table 1 Total air minimum clearance 3 under defined conditions 3
Table 2 Minimum creepage distance to withstand long-term stress under defined conditions 4
Table 3 Impact withstand voltage values under defined conditions 6
Table 4 AC power frequency voltage value corresponding to rated insulation voltage 6
Table 5 Heat resistance classification 7
Table 6 Temperature rise limit 7
Table 7 The meaning of the first digit of the IP rating 13
Table A.1 Type test items for different electrical and mechanical structures
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents.
This standard is proposed and managed by the National Electrical and Electronic Equipment Structure Standardization Technical Committee (SAC/TC34).
This standard was drafted. Jiangsu Tianxiang Electric Co., Ltd., Zhangjiagang Tianyue Electric Co., Ltd., Wenzhou Zhongyi Lock Appliance Co., Ltd.
Company, Wenzhou Guotong Electric Appliance Co., Ltd., Xingji Electric Co., Ltd., Xuji Electric Co., Ltd.
The main drafters of this standard. Zhong Jie, Zhao Jianming, Pan Zhengdong, Xue Hezhen, Shui Junzhe, Lu Xiaoqiang, Zhang Yongfeng, Yuan Pingding.
Low-voltage cabinet electrical and mechanical structure
1 Scope
This standard specifies the environmental adaptability, surface, insulation properties and electrical properties of electrical connections or mechanical support products in low-voltage cabinets.
Energy, mechanical properties, enclosure protection rating, information and inspection rules.
This standard applies to the installation and supply to the user by the cabinet manufacturer, and the rated voltage is less than 1000V, the frequency is 50Hz (or
60Hz), or DC below 1500V, including but not limited to.
---Connectors for active connections in electrical circuits, including primary circuit connectors, secondary circuit connectors, or for plug connections
Use device, etc.;
---Insulation for electrical support, including busbar clamps, insulators, etc.;
---Functions for electrical circuit distribution, including one circuit assigned to two circuits, three circuits or four circuits and above
Energy
--- Functional components mounted on the metal structure of the low-voltage cabinet, and made of insulating materials, including operating handles, ventilation windows, labels
Box and so on.
Note. Refer to Appendix A for the type test items of different electrical and mechanical structure products.
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 2423.1-2008 Environmental testing of electric and electronic products - Part 2. Test methods Test A. Low temperature
GB/T 2423.2-2008 Environmental testing of electrical and electronic products - Part 2. Test methods Test B. High temperature
GB/T 2423.3-2016 Environmental testing - Part 2. Test method test Cab. constant damp heat test
GB/T 2423.5-1995 Environmental testing for electric and electronic products - Part 2. Test methods Test Ea and guide. Impact
GB/T 2423.6-1995 Environmental testing for electric and electronic products - Part 2. Test methods Test Eb and guide. Collision
GB/T 2423.8-1995 Environmental testing of electric and electronic products - Part 2. Test method test Ed. Free fall
GB/T 2423.10-2008 Environmental testing of electric and electronic products - Part 2. Test method test Fc. Vibration (sinusoidal)
GB/T 2423.17-2008 Environmental testing of electric and electronic products - Part 2. Test method test Ka. salt spray
GB/T 2828.1-2012.Sampling procedures for counting sampling - Part 1. Quantitative inspection by batches
plan
GB/T 4207-2012 Determination of resistance to tracking marks and comparison of electrical tracking index of solid insulating materials
GB/T 4208-2017 enclosure protection grade (IP code)
GB/T 5169.10-2017 Electrical and electronic products - Fire hazard testing - Part 10. Glowing wire/hot wire basic test method burning
Hot wire device and general test method
GB/T 5169.11-2017 Electrical and electronic products - Fire hazard testing - Part 11. Glowing wire/hot wire basic test method
Glowing wire flammability test method (QWEPT)
GB/T 5465.2-2008 Graphical symbols for electrical equipment - Part 2. Graphical symbols
GB/T 11021-2014 Electrical insulation heat resistance and representation
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