इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान का अधकार, जी का अधकार” “परा को छोड न 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 12640-1 (2008): Residual Current Operated Circuit - Breakers for Household and Similar Uses, Part 1: Circuit-Breakers Without Integral Overcurrent Protection (RCCBs) [ETD 7: Low Voltage Switchgear and Controlgear] “ान $ एक न भारत का नमण” Satyanarayan Gangaram Pitroda “Invent a New India Using Knowledge” “ान एक ऐसा खजाना > जो कभी चराया नह जा सकताह ै”ै Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 12640 (Part 1) :2008 IEC 61008-1:1996 Indian Standard RESIDUAL CURRENT OPERATED CIRCUIT- BREAKERS FOR HOUSEHOLD AND SIMILAR USES PART 1 CIRCUIT-BREAKERS WITHOUT INTEGRAL OVERCURRENT PROTECTION (RCCBS) (First Revision ) ICS 29.120.50 @ 61S 2008 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 Apti 2008 Price Rs. 1060.!2!2 IS 12640 (Part 1) :2008 IEC61OO8-1 :1996 CONTENTS 1 2 Normative reference.s .................................................................................................... 2 3 Definitions ... .. ......................... .................... 3 4 Classification ..................................... .............. ......................... ..... ..................... 13 5 Characteristics of RCCBs .............................................. ..................................... 14 6 Marking andother product inform ation .......................................................................... 20 7 Standard conditions foroperation inservice and for installation ................................ 22 8 Requirements for construction and operation ................................................................ 23 9 Tests ........................................................................................................................... 34 Annex A (normative) Test sequence and number of samples to be submitted for certification purposes ,,, ,., .,,, ,., ,,, ,,. .... ...... .. 102 Annex B (normative) Determination of clearances and creepage distances ....................... 106 Annex C [normative) Arrangement for the detection of the emission of ionized gases during short. circuit tests ......................................................................................................l O9 Annex D (normative) Routine tests .................................................................................... 112 Annex E (normative) List of tests, additional test sequences and numbers of samples for verification of comrdiance of RCCBS with the requirements of electromagnetic compatibility (EMC)...; ........................................................................................................ll3 Annex 1A (informative) Methods of determination of short-circuit power-factor ...................115 Annex IB (informative) Glossary of symbols .......................................................................ll6 Annex [C (informative) Examples ofterminal designs .................................................... ...117 Annex ID (informative) Correspondence between ISO and AWG copper conductors ..........121 Annex IE (informative) Follow-up testing program for~.CBs ............................................l22 Annex IF (Informative) SC PDsforshort.circuit tests ......................................................... 126 Bibliography ............... ....... 128 Figure 1 -Thread-f orming tapping screw (3.6.1 O)................................................................ 75 Fjgure 2. Thread. cutting tapping screw (36.11) ................................................................. 75 Flgure3– Standard test finger (9.6) .................................................................................... 76 Figure 4a – Test circuit for the verification of – operating characteristics – trip-free mechanism – behaviour in case of failure of line voltage for RCCBS functionally dependent on line voltage ............................................................................................ 77 Figure 4b - Test circuit for the verification of the correct operation of RCCBS in the case of residual pulsating direct currents, .... .. .............................. ............... 78 Figure 4C – Test circuit for the verification of the correct operation of RCCBS In the case of residual pulsating direct currents .... .. ........................................... .............. 79 II Ill II II Ill ,.1...4.--—-,-””.. — ——. ,——. .— IS 12640 (Part 1) :2008 IEC61OO8-1 :1996 Figure 5 – Test circuit for the verification of the rated making and breaking capacity and of the co-ordination with a SCPD of a single-pole RCCB with two current paths (9.11) 81 Figure 6 – Test circuit for the verification of the rated making and breaking capacity and of the co-ordination with a SCPD of a two-pole RCCB, in case of a single-phase circuit (9.11) ............................................................................................ 82 Figure 7- Test circuit for the verification of the rated making and breaking capacity and of the co-ordination with a SCPD of a three-pole RCCB on three-phase circuit (9.11). 83 Figure 8 – Test circuit for the verification of the rated making and braking cfapacity and of the co-ordination with a SCPD of a three-pole RCCB with four current paths on a three-phase circuit with neutral (9.11) .......................................................................... 84 Figure 9 – Test circuit for the verification of the rated making and breaking capacity and of the co-ordination with a SCPD of a four-pole RCCB on a three-phase circuit with neutral (9.11) .............................................................................................. 85 Figure 10- Test apparatus for the verification of the minimum Pt and /p values to be withstood by the RCCB(9.11.2. I a)) ............................................................. 86 Figure 11 -Mechanical shock test apparatus (9.12.1) ................................. ~~ 87 Figure 12-Mechanical impact test apparatus (9.12.2.1 ) ......................................... 88 Figure 73 – Striking element for pendulum impact test apparatus (9.12 .2.1) ........................ 89 Figure ?4 – Mounting support for sample for mechanical impact test (9.12,2 .1) .................... 90 Figure f5 - Example of mounting and unenclosed RCCB foT mechanica\ impact test (9.12.2.1) .................................................................................. 91 Figure 16- Example of mounting of panel mounting type RCCB for the mechanical impact test (9.21.2.1 ) ............................................................................. 92 Figure 17- Application of force for mechanical test of rail mounted R_CCB (9,12 .2.2) ........... 93 Figure 18– Ball-pressure test apparatus (9.13.2) ................................................................ 94 Figure 19 – Test circuit for the verification of the limiting value of overcurrent in case of single-phase load through a three-pole RCCB (9,18,2),.,..,,.,., .............................. 95 Figure 19a–Current ring wave 0,5 @100 kHz ............................................................. ,..,,. 96 Figure 19 b–Test.circuit for the ring wave test at RCCBs .................................................... 97 Figure 20–Stabilizing period for reliability test (9.22 .l.3) .................................................... 98 Figure21 -Reliability test cycle (9.22 .l.3) .......................................................................... 99 Figure 22- Example for test circuit for verification of ageing of electronic components (9.23) ..........................................................................................l OO Figure 23– Surge current impulse 8/20 ~s ..........................................................................lOl Figure 24– Test circuit forthesurge current test at RCCBs .................................................lOl Figures B.1 to B.10 – Illustrations of the application of creepage distances, .................... .,,.107 Figure C.1 . Test arrangement ..................................................................................... .....110 Figure lC.l. Examples of pillar terminals .............................................................................ll8 Figure lC.2– Examples of screw terminals and stud terminals .............................................ll9 Figure lC,3– Examples of saddle terminals .........................................................................l2O Figure lC.4– Examples of lug terminals ..............................................................................l2O IS 12640 (Part 1) :2008 IEC61OO8-1 :1996 Table 1 –Standard values of break time andnon-actuating time.,,, .......................