This standard specifies the relevant requirements for correct selection, installation and use of Residual Current operated protective Devices (hereinafter referred to as RCD) as well as its operation and management.
This standard is applicable to AC power supply and consumption system with rated voltage not greater than 400V.
This standard is not applicable to protection against electric shock accident happened between phases or between phase and N line, electrical equipment damage or electrical fire accident.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/Z 6829 General Requirements for Residual Current Operated Protective Devices
GB/T 10963.1 Electrical Accessories - Circuit-breakers for Overcurrent Protection for Household and Similar Installation - Part 1: Circuit-breakers for a.c. Operation (GB/T 10963.1-2005, IEC 60898.1:2002, IDT)
GB/T 14048.1 Low-voltage Switchgear and Controlgear - Part 1:General Rules (GB/T 14048.1-2012, IEC 60947-1:2011, MOD)
GB/T 14048.2 Low-voltage Switchgear and Controlgear - Part 2: Circuit-breakers (GB/T 14048.2-2008, IEC 60947-2:2006, IDT)
GB 14050-2008 Types and Safety Technical Requirements of System Earthing
GB/T 16916 (All parts) Residual Current Operated Circuit-breakers without Integral Overcurrent Protection for Household and Similar Uses (RCCB) (GB/T 16916.1-2014, IEC 61008-11:2012, MOD; GB/T 16916.21-2008, IEC 61008-2-1:1990, IDT; GB/T 16916.22-2008, IEC 61008-2-2:1990, IDT)
GB/T 16917 (All parts) Residual Current Operated Circuit-breakers with Integral Overcurrent Protection for Household and Similar Uses (RCCB) (GB/T 16917.1-2014, IEC 61009-1:2012, MOD; GB/T 16917.21-2008, IEC 61009-2-1:1991, IDT; GB/T 16917.22-2008, IEC 61009-2-2:1991, IDT)
GB/T 20044 Electrical Accessories - Portable Residual Current Devices without Integral Overcurrent Protection for Household and Similar Use (PRCD) (GB/T 20044-2012, IEC 61540:1999, MOD)
GB/T 22387 Residual Current Operated Relay
GB/T 22794 Type B Residual Current Operated Circuit-breakers with and without Integral Overcurrent Protection for Household and Similar Uses (Type B RCCBs and Type B RCBOs) (GB/T 22794-2008, IEC 62423:2007, IDT)
GB/T 28527 Residual Current Devices with or without Overcurrent Protection for Socket-outlets for Household and Similar Uses (SRCD) (GB/T 28527-2012, IEC 62640:2011, MOD)
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
direct contact
contact of human or animal with live conductor
3.2
indirect contact
contact of human or animal with exposed conductor of equipment which becomes live under fault condition
3.3
residual current
I?
effective value of current vector sum passing through RCD main circuit
3.4
residual operating current
residual current value which causes RCD to operate under specified conditions
3.5
rated residual operating current
IΔn
residual operating current value of RCD specified by the manufacturer, at which RCD shall operate under specified conditions
GB/T 13955-2017 The following standards are cited：
