International Standard Corresponding Indian Standard Degree of Equivalence

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1 DOC: ET 12(6671) BUREAU OF INDIAN STANDARDS DRAFT FOR COMMENTS ONLY (Not to be reproduced without the permission of BIS or used as a STANDARD) Draft Indian Standard SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL AND LABORATORY USE PART 1 : GENERAL REQUIREMENTS Last date for receipt of comments is Measuring Equipment for Basic Electrical Quantities Sectional Committee, ET 12 NATIONAL FOREWORD This Indian Standard (First Revision) which is identical with IEC (2010) Ed. 3.0 Safety Requirements for electrical equipment for measurement, control, and laboratory use Part 1 General requirements issued by the International Electrotechnical Commission (IEC) would be adopted by the Bureau of Indian Standards on the recommendations of the Measuring Equipment for Basic Electrical Quantities Sectional Committee, ET 12 and approval of the Electrotechnical Division Council. This standard was first published in 1979, which was based on IEC Pub IEC Pub has since been replaced by IEC Therefore this revision has been undertaken to bring it in line with International Practices. The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: a) Wherever the words International Standard appear, referring to this standard, they should be read as Indian Standard. b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker. In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards which are to be substituted in their places are listed below along with their degree of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of Equivalence IEC (all parts) Letter symbols to be used in electrical technology IS 3722 (Part 1) : 1983 Letter symbols and signs used in i

2 IEC Audio, video and similar electronic apparatus Safety requirements IEC , Environmental testing Part 2-14: Tests Test N: Change of temperature IEC , Environmental testing Part 2-75: Tests Test Eh: Hammer tests IEC Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V IEC (all parts) Plugs, socket outlets and couplers for industrial purposes IEC (all parts), Appliance couplers for household and similar general purposes electrical technology: Part 1 General guidance on symbols and subscripts IS 3722 (Part 2) : 1983 Letter symbols and signs used in electrical technology: Part 2 Reference tables for symbols and subscripts IS 616 : 2003 / IEC : 2001 Audio, video and similar electronic apparatus Safety requirements IS 9000 (Part 4) : 1979 Basic environmental testing procedures for electronic and electrical items: Part 14 Test N: Change of temperature (First revision) IS 9000 (Part 7/Sec 7) : 2006 Basic environmental testing procedures for electronic and electrical items: Part 7 Impact Test, Test Eh: Hammer tests IS 694 : 1990 PVC Insulated cables for working voltages upto and including V IS/IEC (Part 1) : 2002 Plugs, socket outlets and couplers for industrial purposes : Part 1 General requirements (first revision) IS/IEC (Part 2) : 1999 Plugs, socket outlets and couplers for industrial purposes :Part 2 dimensional interchangeability requirements for pin and contact tube accessories (first revision) IS/IEC (Part 1) : 2001 Appliance couplers for household and similar general purposes: Part 1 General requirements IS/IEC (Part 2/Sec 2 ) : Equivalent Equivalent ii

3 1998 Appliance couplers for household and similar general purposes: Part 2 : Sec 2 Interconnection Couplers for Household and Similar Equipment IS/IEC (Part 2/Sec 3 ) : 1998 Appliance couplers for household and similar general purposes: Part 2 : Sec 3 Appliance couplers with a degree of protection higher than ipxo IEC , Household and similar electrical appliances Safety Part 2-24: Particular requirements for refrigerating appliances, ice cream appliances and ice makers IEC Degrees of protection provided by enclosures (IP Code) IEC Insulation coordination for equipment within low-voltage systems Part 3: Use of coatings to achieve insulation coordination of printed board assemblies IEC , Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods IEC Low-voltage switchgear and controlgear Part 1 General rules IEC Low voltage switchgear and controlgear Part 3 Switches, disconnectors, switch IS 302(Part 2/Sec 24) : 1994 Safety of household and similar electrical appliances : Part 2 Particular requirements, Sec 24 Refrigerators, food freezers and ice makers IS 60529:2001 Classification of Degrees of protection provided by enclosures (IP Code) IS 15382(Part 3) : 2006 /IEC (2003) Insulation coordination for equipment within low-voltage systems: Part 3 Use of coating, potting or moulding for protection against pollution IS (Part 2/Sec 2 ) : 2008 Fire Hazard Testing : Part 2 Test Methods, Sec 2 Needle-flame Test Method Apparatus, Confirmatory Test Arrangement And Guidance IS (Part 1) : 1993 /IEC : 1988 Specification for low voltage switchgear and control gear: Part 1 General rules IS (Part 3) : 1993 /IEC : 1990 Specification for low voltage switchgear and iii

4 disconnectors and fuse combination units IEC , Electroacoustics Sound level meters Part 1: Specifications IEC , Electroacoustics Sound level meters Part 2: Pattern evaluation tests control gear: Part 3 Switches, disconnections, switch disconnections and fuse combination units IS (Part 1) : 2005 Electroacoustics Sound level meters : Part 1 Specification IS (Part 2) : 2005 Electroacoustics Sound level meters : Part 2 Pattern evaluation tests ISO 306 : 1994 Plastics Thermoplastic materials Determination of Vicat softening temperature (VST) IS 10810(Part 22) : 1984 Methods of test for cables : Part 22 Vicat softening point The technical committee has reviewed the provisions of the following International Standards referred in this adopted standard and has decided that they are acceptable for use in conjunction with this standard. International Standard IEC Title Basic and safety principles for man machine interface, marking and identification Coding principles for indicators and actuators IEC Tests on electric and optical fibre cables under fire conditions Part 1-2 : Test for vertical flame propagation for a single insulated wire or cable Procedure for 1 kw premixed flame IEC Tests on electric and optical fibre cables under fire conditions Part 2-2: Test for vertical flame propagation for a single small insulated wire or cable Procedure for diffusion flame IEC Household and similar electrical appliances Safety Part 2-89: Particular requirements for commercial refrigerating appliances with an incorporated or remote refrigerant condensing unit or compressor IEC IEC Low voltage electrical installations Part 4-44: Protection for safety Protection against voltage disturbances and electromagnetic disturbances Nuclear instrumentation Constructional requirements and classification of radiometric gauges iv

5 IEC IEC IEC IEC (all parts) IEC IEC IEC Guide 104 ISO/IEC Guide 51 ISO 361 ISO 700 Graphical symbols for use on equipment Safety requirements for electrical equipment for measurement, control and laboratory use Part 031 : Safety requirements for hand held probe assemblies for electrical measurement and test High voltage test techniques for low voltage equipment Part 1 : Definitions, test and procedure requirements High-voltage test techniques for low voltage equipment High voltage test techniques for low voltage equipment Part 2 : Test equipment Degrees of protection provided by enclosures for electrical equipment against external impacts (IK code) The preparation of safety publications and the use of basic safety publications and group safety publications Safety aspects Guidelines for their inclusion in standards Basic ionizing radiation symbol Graphical symbols for use on equipment Only English language text has been retained while adopting it in this Indian Standard, and as such the page numbers given here are not the same as in the International Standard For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated expressing the result of a test, shall be rounded off in accordance with IS 2 : 1960 Rules for rounding off numerical values (revised). The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard Note: The technical content of the document is not available on website. For details, please refer the corresponding IEC ( 2010) or kindly contact: Head Electrotechnical Department Bureau of Indian Standards 9, B. S. Zafar Marg, New Delhi v

6 Telephone/ fax: vi