IEC 60335 1 Household and similar electrical appliances

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements History and development of the major concepts for appliance safety relating to abnormal operation, clearances, creepage distances and fire hazard protection TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements 1966 The formation of TC 61 was agreed at the meeting of the IEC/COA(SMB) held in Tel Aviv in October 1966. 1967 First meeting of TC 61 in New York city – this was also the first IEC technical meeting to be held in the USA IEC Central Office Engineers: M. Jacques Blanc, Mme. Danielle Dobler, Mme. Jacqueline Huberdeau, Dr. Marinette Sabev, Dr. Philippe Lenoir, Dr. Alan Harmer, Mr Tim Rotti, M. Christophe Boyer Secretariat: Held by the US national committee since the committee formation. Secretaries: Mr S Hoffman, Mr K Geiges, Mr A Farquhar, Mr H Reimers, Mr K Mitchell, Mr M Leimbeck, Mr A Brazauski, Mrs S Bird, Ms P Tebina (acting at meeting # 81 Bangkok May 2010) Ms R Myers Assistant Secretaries: Mrs J Dunlap, Mrs M Burk Ms R Myers, Ms G Roh, Ms V Davis TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements Chairs: Dr. R C G Williams (GBNC) 1967 – 1973 Mr. L Elfström (SENC) 1973 – 1978 Mr. D Huisinger, (NLNC) 1978 – 1983 Mme. M C Bansse (FRNC) 1983 – 1994 Mr. D R Johns (NZNC) 1994 – 2015 (acting mid 2015 to early 2016) Mr F Garagantini (ITNC) 2016 - TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements 1970 First Edition published (21 Parts 2 published by 1975) – Cl 19 had electronic circuits “under consideration” – Cl 29 clearances, creepage distances based on working voltage and protection against deposition of dirt – Cl 30. 2 resistance to fire used the “hot mandrel” test from CEE 11 TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements 1976 Second Edition published (44 Parts 2 published by 1989) – Cl 19 Requirements for testing electronic circuits introduced. No recognition of reliance on the correct operation of microprocessors (programmable devices) – Cl 29 clearances, creepage distances based on working voltage and protection against deposition of dirt – Cl 30. 2 resistance to fire used the “hot mandrel” test from CEE 11 1984 Amendment Number 4 Introduced glow-wire test in place of hot mandrel test, differentiated between attended and unattended appliances for the GW test severity and “bad connection test with heaters” also made applicable for unattended appliances. Consequential needle flame test applied if there was a failure of the GWT or the BCT. 1988 Amendment Number 6 Requirement introduced. to consider sleeper faults in electronic circuits used for protection (now 19. 11. 3) TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements 1991 Third Edition published (86 Parts 2 published by 2000) • • • Cl 19 No change to the clause 19 requirements concerning electronic circuits Cl 29 clearances, creepage distances based on working voltage and protection against deposition of dirt Cl 30. 2 Reduction change to GW test severity for unattended appliances. Consequential test now also applied to unattended appliances where the GW test was passed with ignition. Amendment 1 (1994) No relevant changes to Cl 19, 29 or 30. 2 Amendment 2 (1999) No relevant changes to Cl 19, 29 or 30. 2 TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements 2001 Fourth Edition published (97 Parts 2 published by 2008) • Cl 19 No change to the clause 19 requirements concerning electronic circuits • Cl 29 clearances, creepage distances now based on IEC 60664 -1 taking into account rated impulse voltage (obtained from rated voltage and over-voltage category) for clearances and material group, pollution degree and working voltage for creepage distances • Cl 30. 2 Increase in GW test severity for attended and unattended appliances. No failure of GW test allowed. Consequential test now only applied to unattended appliances where the GW test was passed with ignition. Needle flame test applied to PCB material. Some pre-selection alternatives introduced. TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements Amendment 1 (2004) • • • Cl 19 EMP tests introduced for appliances that have an electronic off or that have a standby mode or that use PECs for safety. Recognition of microprocessors (programmable devices) used in PECs. Software assessment requirements introduced. Cl 29 Smaller clearances as first choice recognized so as be more in line with component standards. Reduction in thickness for SI and RI allowed if a penetration test can be withstood. Cl 30. 2 No major change to the requirements TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements Amendment 2 (2006) • • • Cl 19 Faulty operation test for electronic power switching device introduced. Test to check stable reset of microprocessor introduced. Requirement for separate relay or contactor for abnormal operation introduced. Cl 29 No major changes to the requirements. Cl 30. 2 Additional options for pre-selection testing introduced. Requirements for remote operation of appliances introduced. TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements 2010 Fifth published • • • Cl 19 Additional tests have been introduced for positioning of mains voltage selector switches. Compliance criteria for door interlock failures is specified. The test criteria for some of the EMP tests have been clarified. The running overload test has been made more generally applicable for appliances that use PECs to sense parameters other than winding temperatures. Cl 29 Requirements for functional insulation have been extended to cover insulation that is subjected to a steady-state voltage or recurring peak voltage including voltages with frequency exceeding 30 k. Hz. Requirements for insulation (basic, supplementary, reinforced) subject to working voltage > rated voltage have been included based on IEC 60664 -1 and IEC 60664 -4. Cl 30. 2 Further additional options for pre-selection testing introduced. Requirements for small parts and parts weighing less than 0, 5 g have been introduced. TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements 2010 Fifth Edition published (100 Parts 2 published by 2015) – Many notes have been converted to normative text; – Requirements for class III appliances and class III constructions have been clarified; – The humidity test of 15. 3 has been aligned with the damp heat – steady state test in IEC 60068 -2 -78; – The method of software assessment (Annex R) has been substantially rewritten to following the more usual structure of “Requirement” “Test specification”; – Requirements for motor running capacitors have been introduced; – Requirements for allowed temperature rises of accessible parts of all appliances have been introduced. These will be elaborated or modified in the parts 2, if necessary. TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements Amendment 1 (2013) Some other changes are: − − − appliances incorporating functional earthing; surface temperature limits following IEC Guide 117; button battery enclosure safety; battery-operated appliances in new Annex S; clearances in appliances used at altitude exceeding 2000 m; measurement of power input and current input where the input varies throughout the operating cycle; − introduction of rinse aid into the solution used for the spillage test. TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements Amendment 2 (2016) Some other changes are: − guidance on choke hazard assessment; − additional requirements added for appliances with a detachable power supply part; − clarification of instruction presentation and lettering size; − stop function requirements added; − halogen free flexible cord requirements added ; − core identification of muti-neutral supply cords − more details of testing PECs; − test for UV-C effects on non-metallic parts added; − more guidance on using part 1 for appliances not covered by a Part 2 TC 61

IEC 60335 -1 Household and similar electrical appliances - Safety Part 1: General requirements THANK YOU TC 61