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RESIDUAL CURRENT OPERATED CIRCUIT-BREAKING FOR HOUSEHOLD AND SIMILAR USES - PART 2: CIRCUIT-BREAKERS WITH INTEGRAL OVERCURRENT PROTECTION (RCBOS)
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Published date: 12-01-2013
Publisher: Bureau of Indian Standards
NATIONAL FOREWORD1 Scope2 Normative references3 Definitions4 Classification5 Characteristics of RCBOs6 Marking and other product information7 Standard conditions for operation in service and for installation8 Requirements for construction and operation9 TestsAnnex A (normative) - Test sequence and number of samples to be submitted for certification purposesAnnex B (normative) - Determination of clearances and creepage distances Annex C (normative) - Arrangement for the detection of the emission of ionized gases during short-circuit testsAnnex D (normative) - Routine testsAnnex E (normative) - Special requirements for auxiliary circuits for safety extra-low voltageAnnex F (normative) - Coordination between RCBOs and separate fuses associated in the same circuit Annex G (normative) - Additional requirements and tests for RCBOs consisting of a circuit-breaker and a residual current unit designed for assembly on siteAnnex H (normative) - List of tests, additional test sequences and numbers of samples for verification of compliance of RCBOs with the requirements of electromagnetic compatibility (EMC)Annex IA (informative) - Methods for determination of short-circuit power-factor Annex IB (informative) - Glossary of symbolsAnnex IC (informative) - Examples of terminals Annex ID (informative) - Correspondence between ISO and AWG copper conductors Annex IE (informative) - Follow-up testing programme for RCBOs
Applicable to residual current operated circuit-breakers with integral overcurrent protection functionally independent of, or functionally dependent on, line voltage for household and similar uses, for rated voltages not exceeding 440 V a.c. with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A and rated short-circuit capacities not exceeding 25000 A for operation at 50 Hz or 60 Hz.
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