The scope of IEC 61008-1 and IEC 61009-1 applies, with the following additions. This standard specifies the technical requirements and test methods for Type F and Type B RCDs (residual current devices). The technical requirements and test methods specified in this standard are supplementary to the technical requirements for Type A residual current devices. This standard can only be used in conjunction with IEC 61008-1 or IEC 61009-1. F-type RCCB (residual current circuit breaker without overcurrent protection) and F-type RCBO (residual current circuit breaker with overcurrent protection) with a rated frequency of 50 Hz.60 Hz or 50/60 Hz are used for electrical installations of frequency converters powered by phase and neutral lines or intermediate conductors between phase and ground. They can provide protection against rated frequency AC sinusoidal residual current, pulsating DC residual current, and potential composite residual current. B-type RCCB and B-type RCBO can provide protection against sinusoidal AC residual current, pulsating DC residual current, composite residual current, and smooth DC residual current at 1000 Hz and below. RCD that meets this standard cannot be used in DC power systems. The technical requirements and test methods for products used in residual current situations that are not covered by IEC 61008-1 or IEC 61009-1 are under consideration. The type tests used for manufacturer declaration or compliance verification should be carried out according to the test procedures in Appendix A, Appendix B, Appendix C, or Appendix D of this standard. The complete test procedures for the type tests of F-type RCCB and F-type RCBO are given in Table A.1 or Table B.1, respectively; The complete test procedures for type tests of B-type RCCB and B-type RCBO are given in Table Cc.1 or Table D.1, respectively. Note 1: Throughout the standard, the term "RCD" refers to RCCB and RCBO. Note 2: The technical requirements for one pole products with non opening and closing neutral poles are under consideration. Note 3: Even if surge voltage can cause flashover and subsequent current, and when electronic devices or EMC filters are connected, a residual current with a maximum duration of 10 ms will be generated. F-type and B-type RCDs still have high false tripping resistance characteristics
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