Detail of GB 20044-2005

Introduction of GB 20044-2005

1 Scope This standard applies to portable devices for household and similar uses (hereafter referred to as portable residual current devices (PRCDs), consisting of a plug, a residual current device (RCD) and one or more socket-outlets or a provision for connection, functionally independent of, or functionally dependent on, line voltage. They do not incorporate overcurrent protection. They are intended for single-phase circuits for rated currents not exceeding 16 A for rated voltages not exceeding 250 V a.c., or for rated current not exceeding 32 A for rated voltages not exceeding 130 V a.c. to earth. They are intended to provide protection against shock hazard in case of direct contact, in addition to the protection provided by the fixed installations for the circuit downstream. PRCDs have a rated residual operating current not exceeding 0.03 A. Plugs and socket-outlets will comply with the relevant standards. This standard applies to portable devices performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value. They are not intended to be used as parts of fixed installations. Their connecting means may be plugs, socket-outlets, terminals or cords. NOTE 1 – The requirements for PRCDs are in line with the general requirements of GB 16916.1. PRCDs are essentially intended to be operated by unskilled persons and designed not to require maintenance. They may be submitted for certification purposes. NOTE 2 – The RCD part of the PRCD is not intended to provide isolation which may be provided by the plug. NOTE 3 – The use of an integral fuse is permitted, if necessary, for the relevant plug and socket-outlet system. The requirements of this standard apply for environmental conditions as defined in 7.1. Additional requirements may be necessary for PRCDs used in locations having more severe environmental conditions. PRCDs including batteries are not covered by this standard. The present standard does not apply to PRCDs providing the additional function of detecting faults on the supply side and avoiding the closing of the PRCD on a faulty supply circuit. 2 Normative References The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies. GB 1002-1996 Types,basic parameters and dimensions of single phase plugs and sockets GB/T 2099.1-1996 Plugs and socket-outlets for household and similar purposes – Part 1: General requirements (eqv IEC 60884-1:1994) GB/T 2424.2-2005 Environmental testing – Part 2: Tests – Guidance for damp heat tests (eqv IEC 60068-2-28:1990) GB/T 2423.4-1993 Environmental testing – Part 2: Tests – Test Db and guidance: Damp heat, cyclic (12 + 12-hour cycle) (eqv IEC 60068-2-30:1980) GB 4207-2003 Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions (IEC 60112:1979, IDT) GB 4208-1993 Degrees of protection provided by enclosures (IP Code (eqv IEC 60529:1989) GB 5013.1~5013.7-1997 Rubber insulated cables of rated voltages up to and including 450/750V (idt IEC 60245-1~60245-7:1994) GB 5023.1~5023.7-1997 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V (idt IEC 60227-1~60227-7:1992) GB/T 5169.10-1997 Fire hazard testing – Part 2: Test methods – Section 1: Glow-wire test and guidance (idt IEC 60695-2-1/0:1994) GB/T 5465.2-1996 Graphical symbols for use on equipment – Index, survey and compilation of the single sheets (idt IEC 60417:1994) GB 6829-1995 General requirements for residual current operated protective devices (eqv IEC 60755) GB/T 14472-1998 Fixed capacitors for use in electronic equipment – Part 14: Sectional specification: Fixed capacitors for electromagnetic interference suppression and connection to the supply mains (idt IEC 60384-14:1993) GB 16916 (all parts) Residual curren operated circuit-breakers without integral overcurrent protection for household and similar uses(RCCB) (GB 16916.1-2003, IEC 61008-1:1996, MOD; GB16916.21-1997, idt IEC 61008-2-1:1990; GB 16916.22-1997, idt IEC 61008-2-2:1990) GB 16895.4-1997 Electrical installations of buildings – Part 5: Selection and erection of electrical equipment – Chapter 53: Switchgear and controlgear (idt IEC 60364-5-53:1994) GB/T 16935.3-2005 Insulation coordination for equipment within low-voltage systems – Part 3: Use of coatings to achieve insulation coordination of printed board assemblies (iec 60664-3:2003, IDT) GB 18499-2001 Residual current-operated protective devices (RCDs) for household and similar use – Electromagnetic compatibility (IDT iec 61543:1995) IEC 60065:1985 Safety requirements for mains operated electronic and related apparatus for household and similar general use IEC 60249-2 Base materials for printed circuits – Part 2: Specifications IEC 61867 Electrical accessories for household and similar use – Electromagnetic compatibility (EMC)a IEC/ISO Guide 2:1991 General terms and their definitions concerning standardization and related activities ISO 306:1994 Plastics – Thermoplastic materials – Determination of Vicat softening temperature (VST) 3 Terms and definitions

Contents of GB 20044-2005