Standard No.:	GB 16895.21-2011
English Name:	Low-voltage electrical installations—Part 4-41:Protection for safety—Protection against electric shock
Chinese Name:	低压电气装置 第4-41部分: 安全防护 电击防护
Chinese Classification:	Q77    Building electrical equipment and disaster prevention equipment and instrument
Professional Classification:	GB    National Standard
ICS Classification:	91.140.50 91.140.50    Electricity supply systems 91.140.50
Issued by:	AQSIQ;SAC
Issued on:	2011-12-30
Implemented on:	2012-12-1
Status:	superseded
Superseded by:	GB/T 16895.21-2020 Low-voltage electrical installations—Part 4-41:Protection for safety—Protection against electric shock
Superseded on:	2021-7-1
Superseding:	GB 16895.21-2004 Electrical installations of buildings - Part 4-41: Protection for safety - Protection against electric shock
Language:	English
File Format:	PDF
Word Count:	10000 words
Price(USD):	220.0
Delivery:	via email in 1 business day

This part specifies essential requirements regarding protection against electric shock, including basic protection (protection against direct contact) and fault protection (protection against indirect contact) of persons and livestock. It deals also with the application and co-ordination of these requirements in relation to external influences. In this part, requirements are also given for the application of additional protection in certain cases.

Foreword I 410 Introduction II 410.1 Scope 410.2 Normative References 410.3 General Requirements 411 Protective Measure: Automatic Disconnection of Supply 411.1 General 411.2 Requirements for basic protection 411.3 Requirements for fault protection 411.4 TN system 411.5 TT system 411.6 IT system 411.7 Functional extra-low voltage (FELV) 412 Protective Measure: Double or Reinforced Insulation 412.1 General 412.2 Requirements for basic protection and fault protection 413 Protective Measure: Electrical Separation 413.1 General 413.2 Requirements for basic protection 413.3 Requirements for fault protection 414 Protective Measure: Extra-low-voltage Provided by SELV and PELV 414.1 General 414.2 Requirements for basic protection and fault protection 414.3 Sources for SELV and PELV 414.4 Requirements for SELV and PELV circuits 415 Additional Protection 415.1 Additional protection: residual current protective devices (RCDs) 415.2 Additional protection: supplementary protective equipotential bonding Appendix A (Normative) Provisions for Basic Protection Appendix B (Normative) Obstacles and Placing Out of Reach Appendix C (Normative) Protective Measures for Application Only When the Installation Is Controlled or Under the Supervision of Skilled or Instructed Persons Bibliography