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GB/T 30844.3-2017: Variable-frequency drive of 1 kV and below -- Part 3: Safety requirements
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GB/T 30844.3-2017: Variable-frequency drive of 1 kV and below -- Part 3: Safety requirements

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Variable-frequency drive of 1 kV and below-Part 3. Safety requirements ICS 29.240.99 K46 National Standards of People's Republic of China 1kV and the following general frequency control equipment Part 3. Safety regulations Part 3.Safetyrequirements 2017-09-07 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword V. 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Design and manufacture of safety requirements 8 4.1 General requirements 8 4.2 dangerous state of protection under fault 8 4.3 Protection against electric shock hazard 9 4.3.1 Define the voltage level 9 4.3.2 Protection Isolation 11 4.3.3 direct contact protection 12 4.3.4 Protection in case of direct contact 14 4.3.5 Indirect contact protection 14 4.3.6 Insulation 18 4.3.7 output short circuit requirements 27 4.3.8 Residual Current Protection (RCD) or Residual Current Monitoring (RCM) Compatibility 27 4.3.9 Capacitor discharge 28 4.4 Thermal Hazard Protection 28 4.4.1 Minimize the risk of fire 28 4.4.2 Insulation material 28 4.4.3 flammability of shell material 29 4.4.4 Temperature Limit 29 4.4.5 Special Requirements for Liquid Cooling VFDs 31 4.5 Mechanical Danger Protection 31 4.5.1 Mechanical Energy Danger 31 4.5.2 Shell Requirements 32 4.5.3 Mechanical Components Requirements 34 4.5.4 Mechanical strength requirements 34 4.5.5 Mechanical Stability 34 4.6 Operational Hazard Protection 34 4.6.1 Hazardous Movement of Moving Parts 34 4.6.2 Noise emission 34 4.6.3 Vibration and anti-vibration 35 4.7 Other dangerous protection 35 4.7.1 Power Danger 35 4.7.2 Electrical connection requirements 35 4.7.3 Power Supply Failure 37 4.7.4 Protection of Environmental Stress 37 4.8 Security Features 37 4.8.1 General requirements 37 4.8.2 Safely stop 37 4.8.3 Overcurrent protection 38 4.8.4 Frequency hopping setting 38 5 test and verification 38 5.1 General requirements 38 5.1.1 Test Purposes and Classification 38 5.1.2 Selection of test samples 38 5.1.3 Test sequence 38 5.1.4 Ground conditions 38 5.1.5 Compliance 39 5.1.6 Summary of pilot projects 39 5.2 Test Technical Requirements 40 5.2.1 appearance inspection 40 5.2.2 Mechanical test 40 5.2.3 Electrical test 41 5.2.4 Non-normal working test 45 5.2.5 Material Test 46 5.2.6 Environmental Test (Type Test) 5.2.7 Hydrostatic pressure 49 6 Information and logo requirements 49 6.1 General requirements 49 6.2 Selection Information 51 6.3 Installation and Site Commissioning Information 52 6.3.1 General requirements 52 6.3.2 Appearance and installation diagram 52 6.3.3 Environmental Requirements 52 6.3.4 Handling and Installation 52 6.3.5 Wiring 52 6.3.6 Overcurrent or short circuit protection 53 6.3.7 Motor overload protection 53 6.3.8 Site Commissioning 53 6.4 Usage Information 54 6.4.1 General requirements 54 6.4.2 Parameter Adjustment 54 6.4.3 Identification, Symbols and Signals 54 6.5 Maintenance Information 55 6.5.1 General requirements 55 6.5.2 Capacitor discharge 56 6.5.3 Automatic restart/bypass connection 56 6.5.4 PT/CT Connection 56 6.5.5 Other dangers 56 Appendix A (Informative) Clearance for Altitude 57 Appendix B (Informative) Symbols used in this section 58 Appendix C (Normative) Determination of clearances and creepage distances at frequencies above 30 kHz 59 Appendix D (Informative) Circular conductor cross-section 62 Appendix E (informative) Example of protection in direct contact 63

Foreword

"Universal Frequency Control Equipment" series of national standards are expected to structure as follows. --- "1kV and the following general frequency control equipment"; --- "More than 1kV 35kV general frequency control equipment." GB/T 30844 to be divided into sections. There are currently plans to release the following three sections. --- Part 1. Technical conditions; --- Part 2. Test methods; --- Part 3. Safety regulations. This section GB/T 30844 Part 3. This section drafted in accordance with GB/T 1.1-2009 given rules. This part is proposed by China Electrical Equipment Industry Association. This part of the National Frequency Control Equipment Standardization Technical Committee (SAC/TC518) centralized. This section is responsible for the drafting unit. Tianjin Electric Institute of Science and Technology Co., Ltd., Hope Senlan Technology Co., Ltd. Shanghai Renault Branch Technology Co., Ltd., Beijing ABB Electric Drivesystems Co., Ltd., Shanghai Xin Greenstar Motor Co., Ltd., Beijing HE Kang billion Sheng Frequency Technology Co., Ltd., Shandong Taikai Automation Co., Ltd., the State Power Distribution Equipment Quality Supervision and Inspection Center, Shenzhen, British Granville Teng Electric Co., Ltd., Wuhan Port Di Electric Co., Ltd., Shenzhen Sine Electric Co., Ltd., Shandong new scenery of electronic technology hair Exhibition Co., Ltd. The main drafters of this section .Zhu Zilin, Zhang Qing, Han Dongming, Du Junming, Chen Guocheng, Wen Xiangning, Jin Xinhai, Dong Tianshu, Chen Qiuquan, Li Kai, Dongrui Yong, Xie Ming, Zhang Xiaoguang, Zhao Shuguo. 1kV and the following general frequency control equipment Part 3. Safety regulations

1 Scope

GB/T 30844 provisions of this part of the general frequency control equipment or its components on the electrical, thermal and energy other than the power supply Security requirements. This section does not cover used for traction and electric vehicle frequency control equipment, motors and so on. This section applies to the rated input voltage of 1kV AC and below the rated input frequency of 50Hz or 60Hz, the output voltage Not more than 1kV, the output frequency is less than 600Hz general frequency control equipment (hereinafter referred to as frequency control equipment). Note. The exchange of rated voltage 1140V frequency control equipment can refer to this section implementation. The relevant performance requirements are determined by the manufacturer and the user.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 311.1-2012 Insulating coordination Part 1. Definitions, principles and rules GB/T 2423.2-2008 Environmental testing for electric and electronic products Part 2. Test methods Test B. High temperature GB/T 2423.3-2006 Environmental testing for electric and electronic products Part 2. Test methods Test Cab. Constant hot and humid test GB/T 2423.10-2008 Environmental testing for electric and electronic products Part 2. Test methods Test Fc. Vibration (sinusoidal) GB 2894-2008 Safety signs and guidelines for their use GB/T 3048.14-2007 wire and cable electrical performance test methods - Part 14. DC voltage test GB/T 4207-2012 solid insulation materials, resistance to tracking index and compared to the tracking index method of determination GB/T 4208-2017 enclosure rating (IP code) Graphical symbols for electrical diagrams Part 1. General requirements GB/T 4796-2008 Environmental classification of electric and electronic products Part 1. Environmental parameters and their severity GB/T 5169.10-2006 Fire hazard testing for electrician and electronic products - Part 10. Basic test methods for glow/hot wire Hot wire installations and common test methods GB/T 5169.13-2013 Fire hazard testing for electric and electronic products Part 13. Glow/hot wire basic test methods Material glow wire ignition temperature (GWIT) test method GB/T 5169.16-2008 Fire hazard testing for electric and electronic products Part 16. Test flame 50W Horizontal and vertical fire Flame test method GB/T 5169.17-2008 Fire hazard testing for electric and electronic products - Part 17. Test flame 500 W flame test method Graphical symbols for electrical equipment - Part 2. Graphical symbols GB/T 6829-2008 Residual Current Surge Protector General Requirements Industrial plug and socket connectors and couplers - Part 1. General requirements GB/T 11918.1-2014 Measuring methods for contact current and protective conductor current GB/T 12113-2003 GB/T 12668.1-2002 speed control electrical transmission system Part 1 General requirements Low-voltage DC speed electrical transmission system amount The value of the provisions GB/T 12668.2-2002 speed control electrical transmission system Part 2. General requirements of low-voltage AC variable frequency electrical drive system amount ...