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1 Date Document No Doc: ET 15(6749) Sl. No. Name of the Organization Clause/ Subclause Paragraph/ Figure/Table Type of Comment (General/ Technical/ Editorial Comments Proposed Change

2 BUREAU OF INDIAN STANDARDS DRAFT FOR COMMENTS ONLY Doc: ET 15 (6749) (Not to be reproduced without the permission of BIS or used as a STANDARD) Draft Indian Standard ROTATING ELECTRICAL MACHINES PART 17: CAGE INDUCTION MOTORS WHEN FED FROM CONVERTERS APPLICATION GUIDE Last date for receipt of comments is : Rotating Machinery Sectional Committee, ET 15 NATIONAL FOREWORD This Indian Standard which is identical with IEC :2006 Rotating electrical machines Part 17: Cage induction motors when fed from converters Application guide issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the Rotating Machinery Sectional Committee and approval of the Electrotechnical Division Council. The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and 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, references appear to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards, which are to be substituted in their respective places, are listed below along with their degree of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of Equivalence IEC Rotating electrical machines Part 1: Rating and performance Doc ET 15(6517) Rotating electrical machines Part 1: Rating and performance (First Revision) (Under Revision)

3 IEC Rotating electrical machines Part 25: Guide for the design and performance of cage induction motors specifically designed for converter supply Doc ET 15(6750) Rotating electrical machines Part 25: Guide for the design and performance of cage induction motors specifically designed for converter supply (Under preparation) The Technical Committee responsible for the preparation of this standard has reviewed the provisions of the following International Standards referred to in this adopted standard and has decided that they are acceptable for use in conjunction with this standard. International Standard IEC Title Rotating electrical machines Part 12: Starting performance of single-speed threephase cage induction motors Only the English language text of the International Standard 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 IEC publication. 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 of 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 documents is not available on website. For details, please refer the corresponding IEC (2006) or kindly contact: Head Electrotechnical Department Bureau of Indian Standards 9, B. S. Zafar Marg, New Delhi eetd@bis.org.in Telephone/ fax:

4 Date Document No Doc: ET 15(6750) Sl. No. Name of the Organization Clause/ Subclause Paragraph/ Figure/Table Type of Comment (General/ Technical/ Editorial Comments Proposed Change

5 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 Doc: ET 15 (6750) ROTATING ELECTRICAL MACHINES PART 25: GUIDANCE FOR THE DESIGN AND PERFORMANCE OF A.C. MOTORS SPECIFICALLY DESIGNED FOR CONVERTER SUPPLY Last date for receipt of comments is : Rotating Machinery Sectional Committee, ET 15 NATIONAL FOREWORD This Indian Standard which is identical with IEC :2007 Rotating electrical machines Part 25: Guidance for the design and performance of a.c. motors specifically designed for converter supply issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the Rotating Machinery Sectional Committee and approval of the Electrotechnical Division Council. The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and 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, references appear to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards, which are to be substituted in their respective places, are listed below along with their degree of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of Equivalence IEC Rotating electrical machines Part 1: Rating and performance IEC Rotating electrical machines Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles) Doc ET 15(6517) Rotating electrical machines Part 1: Rating and performance (First Revision) (Under Revision) IS : 2011 Rotating Electrical Machines Part 2 Method of Tests Section 1 Standard Methods for Determining Losses and Efficiency from Tests (Excluding Machines for Traction Vehicles ) do

6 IEC Rotating electrical machines Part 6: Methods of cooling (IC Code) IEC Rotating electrical machines Part 9: Noise limits IEC Rotating electrical machines Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher Measurement, evaluation and limits of vibration severity IEC :2006 Rotating electrical machines Part 17: Cage induction motors when fed from converters Application guide IS 6362 : 1995 Designation of Methods of Cooling of Rotating Electrical Machines Doc ET 15(6491) Rotating electrical machines Part 9: Noise limits (First Revision) (Under revision) IS 6492 : 1972 Methods for sampling of powders for powder metallurgical purposes Doc ET 15(6749) Rotating electrical machines Part 17: Cage induction motors when fed from converters Application guide (Under preparation) Technically equivalent Technically equivalent The Technical Committee responsible for the preparation of this standard has reviewed the provisions of the following International Standards referred to in this adopted standard and has decided that they are acceptable for use in conjunction with this standard. International Standard IEC IEC Title Electromagnetic compatibility (EMC) Part 5: Installation and mitigation guidelines Section 1: General considerations Basic EMC publication Electromagnetic compatibility (EMC) Part 5: Installation and mitigation guidelines Section 2: Earthing and cabling IEC Adjustable speed electrical power drive systems Part 2: General requirements Rating specifications for low voltage adjustable frequency a.c. power drive systems 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 of 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. Only the English language text of the International Standard 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 IEC publication. Note: The technical content of the documents is not available on website. For details, please refer the corresponding IEC (2007) or kindly contact: Head Electrotechnical Department Bureau of Indian Standards 9, B. S. Zafar Marg, New Delhi eetd@bis.org.in Telephone/ fax:

7 Date Document No Doc: ET 15(6751) Sl. No. Name of the Organization Clause/ Subclause Paragraph/ Figure/Table Type of Comment (General/ Technical/ Editorial Comments Proposed Change

8 BUREAU OF INDIAN STANDARDS DRAFT FOR COMMENTS ONLY Doc: ET 15 (6751) (Not to be reproduced without the permission of BIS or used as a STANDARD) Draft Indian Standard ROTATING ELECTRICAL MACHINES PART 18-41: PARTIAL DISCHARGE FREE ELECTRICAL INSULATION SYSTEMS (TYPE I) USED IN ROTATING ELECTRICAL MACHINES FED FROM VOLTAGE CONVERTERS QUALIFICATION AND QUALITY CONTROL TESTS Last date for receipt of comments is : Rotating Machinery Sectional Committee, ET 15 NATIONAL FOREWORD This Indian Standard which is identical with IEC :2014 Rotating electrical machines Part 18-41: Partial discharge free electrical insulation systems (Type I) used in rotating electrical machines fed from voltage converters Qualification and quality control tests issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the Rotating Machinery Sectional Committee and approval of the Electrotechnical Division Council. The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and 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, references appear to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards, which are to be substituted in their respective places, are listed below along with their degree of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of Equivalence IEC/TS :2007 Rotating electrical Doc ET 15(6750) Rotating machines Part 25: Guidance for the electrical machines Part 25: design and performance of a.c. motors Guidance for the design and specifically designed for converter supply performance of a.c. motors specifically designed for converter supply (Under preparation) IEC/TS Rotating electrical machines Part 18-42: Qualification and Doc ET 15 (6752) Rotating electrical machines Part 18-42:

9 acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters (Under preparation) The Technical Committee responsible for the preparation of this standard has reviewed the provisions of the following International Standards referred to in this adopted standard and has decided that they are acceptable for use in conjunction with this standard. International Standard Title IEC :2010 IEC IEC IEC/TS IEC IEC IEC/TS IEC/TS Rotating electrical machines Part 18-1: Functional evaluation of insulation systems General guidelines Rotating electrical machines Part 18-21: Functional evaluation of insulation systems Test procedures for wire-wound windings Thermal evaluation and classification Rotating electrical machines Part 18-31: Functional evaluation of insulation systems Test procedures for form-wound windings Thermal evaluation and classification of insulation systems used in rotating machines Rotating electrical machines Part 27: Off-line partial discharge measurements on the stator winding insulation of rotating electrical machines Test procedure for the determination of the temperature index of enameled winding wires Insulation co-ordination for equipment within low voltage systems Part 1:Principles, requirements and tests Adjustable speed electrical power drive systems Part 8: Specification of voltage on the power interface Electrical insulating materials and systems Electrical measurement of partial discharges (PD) under short rise time and repetitive voltage impulses 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 of 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. Only the English language text of the International Standard 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 IEC publication. Note: The technical content of the documents is not available on website. For details, please refer the corresponding IEC (2014) or kindly contact: Head Electrotechnical Department Bureau of Indian Standards 9, B. S. Zafar Marg, New Delhi eetd@bis.org.in Telephone/ fax:

10 Date Document No Doc: ET 15(6752) Sl. No. Name of the Organization Clause/ Subclause Paragraph/ Figure/Table Type of Comment (General/ Technical/ Editorial Comments Proposed Change

11 BUREAU OF INDIAN STANDARDS DRAFT FOR COMMENTS ONLY Doc: ET 15 (6752) (Not to be reproduced without the permission of BIS or used as a STANDARD) Draft Indian Standard ROTATING ELECTRICAL MACHINES PART 18-42: QUALIFICATION AND ACCEPTANCE TESTS FOR PARTIAL DISCHARGE RESISTANT ELECTRICAL INSULATION SYSTEMS (TYPE II) USED IN ROTATING ELECTRICAL MACHINES FED FROM VOLTAGE CONVERTERS Last date for receipt of comments is : Rotating Machinery Sectional Committee, ET 15 NATIONAL FOREWORD This Indian Standard which is identical with IEC :2008 Rotating electrical machines Part 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the Rotating Machinery Sectional Committee and approval of the Electrotechnical Division Council. The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and 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, references appear to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards, which are to be substituted in their respective places, are listed below along with their degree of equivalence for the editions indicated: International Standard Corresponding Indian Standard Degree of Equivalence IEC/TS Rotating electrical Doc ET 15(6751) Rotating machines Part 18-41: Qualification and type tests for Type I electrical insulation electrical machines Part 18-41: Qualification and type tests for systems used in rotating electrical Type I electrical insulation systems machines when fed from voltage used in rotating electrical machines converters when fed from voltage converters (Under preparation)

12 IEC Electrical insulating materials Thermal endurance properties Part 3: Instructions for calculating thermal endurance characteristics IS 8504(Part 4) : 2013 Electrical Insulating Materials Thermal Endurance Properties Part 4 Instructions for Calculating Thermal Endurance Characteristics The Technical Committee responsible for the preparation of this standard has reviewed the provisions of the following International Standards referred to in this adopted standard and has decided that they are acceptable for use in conjunction with this standard. International Standard Title IEC Rotating electrical machines Functional evaluation of insulation systems Part 18-1: General guidelines IEC Rotating electrical machines Functional evaluation of insulation systems Part 18-32: Test Procedures for form-wound windings Electrical evaluation of insulation systems used in machines up to and including 50 MVA and 15 kv IEC/TS Electrical insulating materials A.C. voltage endurance evaluation Introduction IEC Adjustable speed electrical power drive systems Part 4: General requirements Rating specifications for a.c. power drive systems above V a.c. and not exceeding 35 kv IEC Electrical insulating systems Electrical stresses produced by repetitive impulses Part 1: General method of evaluation of electrical endurance IEC Guide for the statistical analysis of electrical insulation breakdown data 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 of 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. Only the English language text of the International Standard 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 IEC publication. Note: The technical content of the documents is not available on website. For details, please refer the corresponding IEC (2008) or kindly contact: Head Electrotechnical Department Bureau of Indian Standards 9, B. S. Zafar Marg, New Delhi eetd@bis.org.in Telephone/ fax: