This standard applies to residual current operated circuit breakers (RCCB) without overcurrent protection for household and similar purposes with an AC rated voltage not exceeding 440V and a rated current not exceeding 125A, whose operating function is independent of the line voltage and is mainly used for protection against electric shock. GB 16916.21-1997 Residual current operated circuit breakers (RCCB) without overcurrent protection for household and similar purposes Part 2.1: Applicability of general rules to RCCBs whose operating function is independent of the line voltage GB16916.21-1997 Standard download decompression password: www.bzxz.net

GB16916.21—1997
This standard is equivalent to IEC1008-2-1:1990 "Residual current operated circuit breakers (RCCB) for household and similar purposes without overcurrent protection Part 2-1: Applicability of general rules to RCCH whose operating function is independent of line voltage". By adopting the IEC standard, the standards of residual current operated circuit breakers for household and similar purposes without overcurrent protection in my country are consistent with international standards to meet the needs of international trade, technical and economic exchanges. This standard must be used together with GB16916.1 "Residual current operated circuit breakers (RCCB) for household and similar purposes without overcurrent protection Part 1 t General rules". This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Low Voltage Electrical Appliances. This standard was drafted by the Shanghai Electric Science Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Zhou Jigang, Sun Zhu, Zhou Hailin and Lv Yinghua. GB16916.21—1997
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1) The final resolutions or agreements on technical issues prepared by the technical committees in which all national committees with special concerns participate express the international consensus on the issues involved as much as possible. 2) These resolutions and agreements are provided for international use in the form of recommendations and are recognized by national committees in this sense. 3) In order to promote international unification, IEC hopes that all national committees, where domestic conditions permit, should adopt IEC recommendations as their national standards. Any discrepancies between IEC recommendations and corresponding national standards shall be resolved in accordance with the relevant provisions of the IEC. This standard was prepared by IEC Technical Committee 23, Electrical Accessories, Subcommittee 23E, Household Circuit Breakers and Similar Apparatus. The text of this standard is based on the following documents: June 2006
23E(CO)62
23E(CO)63
23E(CO)64
23F(CO)68
23F(CO)96
Voting Report
23E(CO)76
23E(CO)77
23F( Detailed information on the voting for this standard can be obtained from the voting report listed in the table above. Voting Report
23E(CO)78
23F(CO)85
23E(CO)117
June Law
23F(CO)79
23E(CO)80
23F(C)81
23E(CO)82
23E(CO)83
23E(CO)84
23E(CO)98
23F(CO)89
Detailed information on the voting for this standard can be obtained from the voting report listed in the table above. Voting Report
23E( CO)100
23E(CO)101
23E(CO)102
23E(C0)103
23F(C0)104
23E(CO)105
23F(CO)1G9
23E(CO)111
National Standard of the People's Republic of China
Residual current operated circuit breakers (RCCB) for household and similar purposes without overcurrent protection
Part 2.1: Applicability of general rules to RCCBs whose operating function is independent of the line voltage 16916.21-1997
idt 1EC 1008-2-1:1990
Residual current operated circuit-breakers without integral overturrent protection for household and similar uses (RCCB)Part 2. 1:Applicability of the generic rules to RCCBfunctionally independent of line yoltage Part 21 of GB 16916 supplements or modifies the corresponding clauses of GB 16916.1 to apply to RCCBs whose operating function is independent of line voltage.
1 Scope of application
This clause of Part 1 is applicable except for the following amendments: The first paragraph is replaced by the following;
This standard applies to residual current operated circuit-breakers (RCCBs) without integral overturrent protection for household and similar uses, whose operating function is independent of line voltage and whose rated voltage does not exceed 440 V AC and whose rated current does not exceed 125 A for main use and protection against electric shock, and whose operating function is independent of line voltage. 2 Referenced standards
This clause of Part 1 applies.
3 Definitions
Except 3.3.5, 3.4.10, 3.4.10.1 and 3.4.10.2 of Part 1, all other clauses apply. 4 Classification
Except 4.1.2, this clause of Part 1 applies. 5 Characteristics of RCBO
Except the last two lines of 5.1, this clause of Part 1 applies. 6 Marking and other product data
Except item n), this clause of Part 1 applies. Approved by the State Administration of Technical Supervision on June 28, 1997 and implemented on September 1, 1998
7 Standard conditions for use and installation
This clause of Part 1 applies.
8 Construction and operational requirements
GB 16916.211997
This clause of Part 1 applies, except that 8.12 does not apply. 9 Tests
This clause of Part 1 applies, except that the following provisions apply. In Table 7 of 9.1.1, the 15th dash (for the test of 9.17) does not apply. Note 3 to 9.7.4 does not apply.
9.9.5 does not apply.
The last two paragraphs of 9.11.2.1a) and the last paragraph of 1) do not apply. 9.17 does not apply.
The last paragraphs of 9.18.1 and 9.18.2 do not apply. Figures
The figures of Part 1 apply.
Except that clause 9.17 Conditions in case of line voltage fault (test sequence D,) in Table AI of Appendix A does not apply and the last two symbols in Appendix IB do not apply, the other contents of the appendix to Part 1 are applicable.
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