This standard applies to residual current operated circuit breakers (RCBO) with overcurrent protection for household and similar purposes, with AC 50Hz or 60Hz, rated voltage not exceeding 440V, rated current not exceeding 125A, and rated short-circuit capacity not exceeding 25000A, whose operating function is independent of the line voltage. GB 16917.21-1997 Residual current operated circuit breakers (RCBO) with overcurrent protection for household and similar purposes Part 2.1: Applicability of general rules to RCBOs whose operating function is independent of the line voltage GB16917.21-1997 Standard download decompression password: www.bzxz.net

GB 16917.21—1997
This standard is equivalent to IEC1009-2-1:1991 "Residual current operated circuit breakers with overcurrent protection for household and similar purposes (RCBO) Part 2-1: Applicability of general rules to RCBOs whose operating function is independent of line voltage". By adopting the IEC standard, the standards of residual current operated circuit breakers with overcurrent protection for household and similar purposes 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 GB 16917.1-1997 "Residual current operated circuit breakers with overcurrent protection for household and similar purposes (RCBO) Part 1: 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 the Promotion of Low-voltage Electrical Standards. 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 and Lv Yinghua. 748
GB 16917. 211997
IEC Foreword
1) Formal resolutions or agreements on technical issues formulated by technical committees in which all national committees that are particularly concerned with the issue participate express the international consensus on the issues involved as much as possible. 2) These resolutions and agreements are used internationally 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, within the scope of domestic conditions, should use IEC recommendations as their national standards. Any inconsistencies between IEC recommendations and corresponding national standards should be pointed out as clearly as possible in the national standards.
This part of the International Standard IEC 1009 has been prepared by IEC Technical Committee 23, Electrical Accessories, Subcommittee 23E, Household Circuit Breakers and Similar Apparatus.
The text of this part is based on the following documents: June Act
23E(CO)69
23E(CO)95+95A
23E(CO)97
Voting Report
23E(CO)86+86A
23E(CO)120
23E(CO)118
June Law
23E(CO)90
23E(CO)91
Details of the voting for this standard can be obtained from the voting report listed in the table above. Voting Report
23E(CO)112
23E(CO)107
National Standard of the People's Republic of China
Residual current operated circuit breakers (RCBO) with overcurrent protection for household and similar purposes
Part 2.1: Applicability of general rules to RCBOs whose operating function is independent of the line voltage Current operated circuit-breakers wlth integralCE 16917. 21—1997
idt IEC 1009-2-1:7997
overcurrent protection for household and similar uses(RCBO)Part 2. 1:Applicability of the general rules to RCBOfunctionally independent of line voltageThis part of GB16917 supplements or modifies the corresponding clauses of GB16917.1 to apply to RCBOs whose operating function is independent of line voltage.
1 Scope of application
Except for the following modifications, this clause of Part 1 is applicable:The first paragraph is replaced by the following:
This standard applies to AC 50 Hz or 60 Hz, with a rated voltage not exceeding 440 V, a rated current not exceeding 125 A, and a rated short-circuit capacity not exceeding 25 D00 A Residual current operated circuit breakers (RCBO) with overcurrent protection for household and similar purposes, the operating function of which is independent of the line voltage.
2 Referenced standards
This clause of Part 1 applies.
3 Definitions
This clause of Part 1 applies, except that definitions 3.3.9, 3.4.23, 3.4.23.1 and 3.4.23.2 do not apply. 4 Classification
This clause of Part 1 applies, except that 4.1.2 does not apply. 5 Characteristics of RCBO
This clause of Part 1 applies, except that the last two lines of 5.1 do not apply. 6 Marking and other product datawwW.bzxz.Net
This clause of Part 1 applies, except that item ) does not apply. Approved by the State Administration of Technology on June 28, 1997 and implemented on September 1, 1998
7 Standard conditions for use and installation
This clause of Part 1 applies.
8 Requirements for structure and operation
GB16917.21--1997
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: In Table 10 of 9.1.1, the 15th dash (for the test of 9.17) does not apply. Note 3 of 9.7.4 does not apply.
9.9.1.5 does not apply.
The second last paragraph of 9.12.2 and the last paragraph of 9.12.13.2 do not apply.
9.17 does not apply.
The last paragraph of 9.18 does not apply.
The figures of Part 1 apply.
Except that in Table A1 of Appendix A, clause "9.17 Operation during line voltage faults" (regarding test sequence D) does not apply and the last two symbols in Appendix IB do not apply, the rest of the appendix to Part 1 applies.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.