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BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg New Delhi 110002 Phones 2323 0131 2323 3375 Extn 4284 TeleFax +91 11 2323 1192 Website : www.bis.org.in email : [email protected] पक परिचालन मं मसौदे रलेख रेषण संञापन ֆշ֊շी मिमֆ : ժटड 16 ---------------------------------------------------------------------------------------------------------------------------------- र֧ֆ : 1. ժटड 16 շ֧ ֏ ֈ 2. मिय֡ֆ ֆշ֊շी मि֏ाչ रिֈ շ֧ ֏ ֈ ֆևा 3. मि िո֊֧ िल֧ է֊ ֏ म֊շाय िֈय, շ֣ या म֊ि ֊मलमոֆ िֈ֧ շी एշ रमֆ ंलչ ֊ ֨ : रल֧ո ֊. षշ ժटड 16 ( 10665 ) ािि ां֍ािषि ֏ाչ 4 लाթटटչ ըि֧չ एंि मविचिչ ըि֧չ िषօ շ֧ मांֆ - ािि ां֍ािषि एंि रिएटि ईटीड16 ( 10666 ) ािि ां֍ािषि ֏ाչ 10-1 ाիं ड ल֧िल ञाֆ շि֊ा - է֊֡रयչ मांֆ ժटड 16 ( 10667) ािि ां֍ािषि ֏ाչ 12 : राժ-टाժ ािि ां֍ािषि ֧ֆ֡ लचडչ չाժड ժटड 16 ( 10669) ािि ां֍ािषि ֏ाչ 14 : իचֆिा֊ լिाि։֊ ािर շ֧ रयչ ֧ रमिֆ म֊िमिֆ ािि ां֍ािषि ժटड 16 ( 10681) ािि ां֍ािषि ֏ाչ 15 : չ֨ ֏िाժ ािि ां֍ािषि ժटड 16 ( 10682 ) ािि ां֍ािषि ֏ाչ 16 : चिड टि֎ाժ֊ է֊֡रयչ ֧ֆ֡ ां֍ािष ि ժटड 16 ( 10683) ािि ां֍ािषि ֏ाչ 18 : ըिֆी է֊֡रिया շा ि֊ ժटड 16 ( 10691 ) ािि ां֍ािषि ֏ाչ 19 : ािि ां֍ािषि एं ि रिएटि ं֎ं։ ֊֡շा֊ շ֧ ि֊ ि֧ էम֊मिֆֆा ञाֆ շि֊֧ շी म֊यिािल ժटड 16 ( 10692 ) ािि ां֍ािषि ֏ाչ 21 : वट֧ िटֆा ि֧ չ֢ल֧टि ֧ֆ֡ ि֊շ է֧षाएँ , ारि֏ामշ ֈािल एंि िषօ ंमֆा շ֣ या թ֊ िֈ շा էिलշ֊ շिं նि է֊ ि िमֆय ֎ֆाֆ֧ ֏֧վं रշ էंֆֆ: यरֈ ि֊շ շ֧ ि֧ रշामֆ վाए ֆ թ ि էिल շि֊֧ िըշ֧ ि यिाय էևिा շाि֎ाि िշ या շरि֊ाթय ը շֆ सम मतिय भेजने की अंतिम िरीख: 23 էट֢֎ि 2016. ि िमֆय यरֈ շժ ֆ շ֣ या էչल֧ ֣ ि ि रֈए िէ։ ֆाषि շ իरिमलमոֆ ֆ֧ ि ֏֧վ ֈं ।यरֈ շժ ि िमֆ रा ֆ ֊ ֆ էևिा ि िमֆ िշ֧ िल ֏ाा ं֎ं։ र֡रट ժ ֆ իिշ ֆ रल֧ո շ यևािֆ էचֆि रֈया վाएչा यरֈ շժ ि िमֆ ֆշ֊շी रշ֣ मֆ շी ժ ֆ मिय मिमֆ շ֧ է։ यष շ֧ िािष ֧ էևिा ի֊շी թि սा ि ըչ֧ շी շायषिा շ֧ मलए मिय मिमֆ շ ֏֧վ֧ վा֊֧ շ֧ ֎ाֈ रल֧ո շ էचֆि ֈ֧ रֈया վाएչा ։֊ यिाֈ, ֏िֈय, (. ि. ि֨य֢ ) ि֨ञाम֊շ ժएिं रि֡ո (मिय֡ֆ ֆշ֊շी) ंलչ ֊ : իरिमलमոֆ संदभ दनाँक ईटीड16/ टी -44- 52 23 मֆं֎ि 2016

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  • BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg New Delhi 110002 Phones 2323 0131 2323 3375 Extn 4284

    TeleFax +91 11 2323 1192

    Website : www.bis.org.in

    email : [email protected]

    : 16 ----------------------------------------------------------------------------------------------------------------------------------

    : 1. 16 2. 3.

    , :

    . 16 ( 10665 ) 4 -

    16 ( 10666 ) 10-1 -

    16 ( 10667) 12 : -

    16 ( 10669) 14 :

    16 ( 10681) 15 : 16 ( 10682 ) 16 :

    16 ( 10683) 18 :

    16 ( 10691 ) 19 :

    16 ( 10692 ) 21 : ,

    :

    : 23 2016.

    ,

    ,

    ( . . ) ( )

    :

    16/ -44-52

    23 2016

  • BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg New Delhi 110002 Phones 2323 0131 2323 3375 Extn 4284

    TeleFax +91 11 2323 1192

    Website : www.bis.org.in

    email : [email protected]

    DRAFTS IN WIDE

    CIRCULATION

    DOCUMENT DESPATCH ADVICE

    Reference Date

    ETD 16 T- 44-52 23 September 2016 TECHNICAL COMMITTEE ETD 16 ----------------------------------------------------------------------------------------------------------------

    ADDRESSED TO:

    1. All Members of Transformers Sectional Committee, ETD 16

    2. All Members of Electrotechnical Division Council; and

    3. All other Interested.

    Dear Sir(s),

    Please find enclosed a copy of the following draft Indian Standard:

    Kindly examine the draft standards and forward your views stating any difficulties which you are

    likely to experience in your business or profession, if these are finally adopted as Indian Standards.

    Comments, if any, may please be made in the format given overleaf and mailed to the undersigned.

    Last date for comments: 23 October 2016.

    In case no comments or only editorial comments are received, it will be presumed that there

    are no technical comments and the document may be finalized in consultation with the chairman of

    the sectional committee.

    Sl.

    No.

    Doc no. Title

    1. ETD 16 ( 10665 ) Power transformers Part 4: Guide to the lightning impulse and switching impulse testing Power transformers and reactors

    2. ETD 16 ( 10666 ) Power transformers Part 10-1: Determination of sound levels Application guide

    3. ETD 16 (10667 ) Power transformers Part 12: Loading guide for dry-type power transformers

    4. ETD 16 ( 10669 ) Power transformers Part 14: Liquid-immersed power transformers using high-temperature

    insulation materials

    5. ETD 16 ( 10681 ) Power transformers Part 15: Gas-filled power transformers

    6. ETD 16 ( 10682) Power transformers Part 16: Transformers for wind turbine applications

    7. ETD 16 ( 10683 ) Power transformers Part 18: Measurement of frequency response

    8. ETD 16 ( 10691) Power transformers Part 19: Rules for the determination of uncertainties in the measurement of

    the losses on power transformers and reactors

    9. ETD 16 ( 10692) Power transformers Part 21: Standard requirements, terminology, and test code for step-voltage

    regulators

  • BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg New Delhi 110002 Phones 2323 0131 2323 3375 Extn 4284

    TeleFax +91 11 2323 1192

    Website : www.bis.org.in

    email : [email protected]

    However, in case comments of technical nature are received, the chairman of the sectional

    committee will be consulted. Based on the decision of the chairman, the documents may either be

    finalized or referred to the sectional committee for further action.

    It may kindly be noted that the technical contents of the documents has not been enclosed as these are

    identical with the corresponding IEC standards. For details, please refer to the corresponding IEC

    publication as mentioned in the respective National Forewords or kindly contact the undersigned.

    Thanking you,

    Yours faithfully

    (P.V. Mathew)

    Sc E & Head (Electrotechnical) Email: [email protected]

    Encl : See attachment.

  • BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg New Delhi 110002 Phones 2323 0131 2323 3375 Extn 4284

    TeleFax +91 11 2323 1192

    Website : www.bis.org.in

    email : [email protected]

    Date Document No. 23 September 2016

    Doc: ETD 16 ( 10665,10666,10667, 10669, 10681, 10682, 10683, 10691,

    10692)

    Sl.

    No. Name of the

    Organization Clause/

    Sub-

    clause

    Paragraph/ Figure/Table

    Type of

    Comment

    (General/ Technical/ Editorial

    Comments Proposed Change

  • Doc: ETD 16 (10665)

    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

    POWER TRANSFORMERS PART 4: GUIDE TO THE LIGHTNING IMPULSE AND SWITCHING IMPULSE

    TESTING - POWER TRANSFORMERS AND REACTORS

    4 -

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 4) which is identical with IEC 60076-4 : 2002 Power transformers - Part 4: Guide to the lightning impulse and switching impulse testing - Power transformers and

    reactors issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the Transformers 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, 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 60060-1 High-voltage test

    techniques Part 1: General definitions and test requirements

    IS 2071(Part 1):2014 High-voltage test

    techniques - Part 1: General definitions

    and test requirements (Third Revision)

    Identical with

    IEC 60060-1:

    2010

  • IEC 60060-2 High-voltage test

    techniques Part 2: Measuring systems

    IS 60060(Part 2):2010 High voltage

    test techniques - Part 2 Measuring

    systems (IEC 60060-2:2010)

    Identical with

    IEC 60060-2

    :2010

    IEC 60076-3 Power transformers

    Part 3: Insulation levels, dielectric tests and external

    clearances in air

    IS 2026(Part 3):2009 Power

    Transformers - Part 3 Insulation levels,

    dielectric tests and external clearances

    in air (third revision)

    Identical with

    IEC 60076-3

    :2000

    IEC 60289 Reactors IS 3151:1982 Earthing transformers

    (first revision)

    Technically

    Equivalent with

    IEC 60289 :1968

    IEC 61083-1 Instruments and

    software used for measurement in

    high-voltage impulse tests Part 1: Requirements for instruments

    IS 15638(Part 1):2006 Instruments and

    software used for measurement in high

    voltage impulse tests: Part 1

    Requirements for instruments

    (Superseeding IS 11349)

    Identical with

    IEC 61083-1 :

    2001

    IEC 61083-2 Digital recorders

    for measurements in high-voltage

    impulse tests Part 2: Evaluation of software used for the

    determination of the parameters of

    impulse waveforms

    IS 15638(Part 2):2006 Instruments and

    software used for measurements in high

    voltage impulse tests: Part 2 Evaluation

    of software used for the determination

    of the parameters of impulse

    waveforms (Superseeding IS 11349)

    Identical with

    IEC 61083-2

    :1996

    Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

  • Doc: ETD 16 (10666)

    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

    POWER TRANSFORMERS PART 10-1: DETERMINATION OF SOUND LEVELS APPLICATION GUIDE

    10-1 -

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 10/Sec 1) which is identical with IEC 60076-10-1 : 2016 Power transformers Part 10-1: Determination of sound levels 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 Transformers 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, 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 60076-10:2016, Power

    transformers Part 10: Determination of sound levels

    IS 2026 (Part 10) : 2009 Power

    Transformers - Part 10 Determination

    of sound levels

    Identical with

    IEC 60076-10:

    2001

  • Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

  • Doc: ETD 16 (10667)

    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

    POWER TRANSFORMERS PART 12: LOADING GUIDE FOR DRY-TYPE POWER TRANSFORMERS

    12 : -

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 12) which is identical with IEC 60076-12 : 2008 Power transformers Part 12: Loading guide for dry-type power transformers issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards

    on the recommendation of the Transformers 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.

    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

    Title

    IEC 60076-11

    Power transformers Part 11: Dry-type transformers

    IEC 60216-1

    Electrical insulating materials Properties of thermal endurance Part 1: Ageing procedures and evaluation of test results

  • IEC 61378-1:1997 Convertor transformers Part 1: Transformers for industrial applications

    Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

  • Doc: ETD 16 (10669)

    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

    POWER TRANSFORMERS PART 14: LIQUID-IMMERSED POWER TRANSFORMERS USING HIGH-

    TEMPERATURE INSULATION MATERIALS

    14 :

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 14) which is identical with IEC 60076-14 : 2013 Power transformers Part 14: Liquid-immersed power transformers using high-temperature insulation materials issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the

    Bureau of Indian Standards on the recommendation of the Transformers 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, 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 60076-1, Power transformers

    Part 1: General IS 2026(Part 1):2011 Power

    transformers: Part 1 General (first

    revision)

    Technically

    Equivalent with

    IEC 60076-1:

  • 2000

    IEC 60076-2, Power transformers

    Part 2: Temperature rise IS 2026(Part 2):2010 Power

    Transformers - Part 2 Temperature rise

    (first revision)

    Technically

    Equivalent with

    IEC 60076-2

    :1993

    IEC 60076-5, Power transformers

    Part 5: Ability to withstand short- circuit

    IS 2026(Part 5):2011 Power

    Transformers - Part 5 Ability to

    withstand short circuit (first revision)

    Technically

    Equivalent with

    IEC 60076-5

    :2006

    IEC 60076-7, Power transformers

    Part 7: Loading guide for oil-immersed power transformers

    IS 2026(Part 7):2009 Power

    Transformers - Part 7 Loading guide

    for oil immersed power transformers

    Identical with

    IEC 60076-7:

    2005

    IEC 60085, Electrical insulation Thermal evaluation and

    designation

    IS 1271:2012 Electrical Insulation -

    Thermal Evaluation and designation

    (Second Revision)

    Identical with

    IEC 60085: 2007

    IEC 60137, Insulated bushings for

    alternating voltages above 1 000 V

    IS 2099:1986 Bushings for alternating

    voltages above 1 000 Volts (second

    revision)

    Technically

    Equivalent with

    IEC 60137 :1984

    IEC 60214-1, Tap-changers Part 1: Performance requirements and

    test methods

    IS 8468:1977 On-load tap changers Technically

    Equivalent with

    IEC 60214: 1966

    IEC 60296, Fluids for

    electrotechnical applications Unused mineral insulating oils for

    transformers and switchgear

    IS 335:1993 New insulating oils (fourth

    revision)

    Technically

    Equivalent with

    IEC 60296 :1982

    IEC 61099, Specifications for

    unused synthetic organic esters for

    electrical purposes

    IS 16081:2013 Insulating liquids -

    Specifications for unused synthetic

    organic esters for electrical purposes

    Identical with

    IEC 61099: 2010

    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

    Title

    IEC 60076-16, Power transformers Part 16: Transformers for wind turbine applications

    IEC 60836 Specifications for unused silicone insulating liquids for electrotechnical

    purposes

    IEC 61378-1

    Convertor transformers Part 1: Transformers for industrial applications

  • IEC 61378-2 Convertor transformers Part 2: Transformers for HVDC applications

    Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

  • Doc: ETD 16 (10681)

    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

    POWER TRANSFORMERS PART 15: GAS-FILLED POWER TRANSFORMERS

    15 :

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 15) which is identical with IEC 60076-15 : 2015 Power transformers Part 15: Gas-filled power transformers issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the

    recommendation of the Transformers 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, 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 60076-1:2011, Power

    transformers Part 1: General IS 2026(Part 1):2011 Power

    transformers: Part 1 General (first

    revision)

    Technically

    Equivalent with

    IEC 60076-1:

    2000

  • IEC 60076-2:2011, Power

    transformers Part 2: Temperature rise for liquid-immersed

    transformers

    IS 2026(Part 2):2010 Power

    Transformers - Part 2 Temperature rise

    (first revision)

    Technically

    Equivalent with

    IEC 60076-2

    :1993

    IEC 60076-3, Power transformers

    Part 3: Insulation levels, dielectric tests and external

    clearances in air

    IS 2026(Part 3):2009 Power

    Transformers - Part 3 Insulation levels,

    dielectric tests and external clearances

    in air (third revision)

    Identical with

    IEC 60076-3

    :2000

    IEC 60076-5, Power transformers

    Part 5: Ability to withstand short circuit

    IS 2026(Part 5):2011 Power

    Transformers - Part 5 Ability to

    withstand short

    circuit (first revision)

    Technically

    Equivalent with

    IEC 60076-5

    :2006

    IEC 60076-10, Power transformers

    Part 10: Determination of sound levels

    IS 2026 (Part 10) : 2009 Power

    Transformers - Part 10 Determination

    of sound levels

    Identical with

    IEC 60076-10:

    2001

    IEC 60137, Insulated bushings for

    alternating voltages above 1 000 V

    IS 2099:1986 Bushings for alternating

    voltages above 1 000 Volts (second

    revision)

    Technically

    Equivalent with

    IEC 60137 :1984

    IEC 60376, Specification of

    technical grade sulfur hexafluoride

    (SF6) for use in electrical

    equipment

    IS 13072:2013 Specification of

    technical grade Sulfur hexafluoride

    (SF6) for use In electrical equipment

    (First Revision)

    Identical with

    IEC 60376:2005

    IEC 62271-1, High-voltage

    switchgear and controlgear Part 1: Common specifications

    IS 62271(Part 1):2007 High-voltage

    switchgear and controlgear: Part 1

    Common Specification (IEC 62271-1

    :2007) (Superseding IS 12729)

    Identical with

    IEC 62271-1

    :2007

    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

    Title

    IEC 60480 Guidelines for the checking and treatment of sulfur hexafluoride (SF6)

    taken from electrical equipment and specification for its re-use

    IEC 62271-4:2002 High-voltage switchgear and controlgear Part 4: Handling procedures for sulphur hexafluoride (SF6) and its mixtures

  • Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

  • Doc: ETD 16 (10682)

    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

    POWER TRANSFORMERS PART 16: TRANSFORMERS FOR WIND TURBINE APPLICATIONS

    16 :

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 16) which is identical with IEC 60076-16 : 2011 Power transformers Part 16: Transformers for wind turbine applications issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards

    on the recommendation of the Transformers 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, 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 60076-1:2011, Power

    transformers Part 1: General IS 2026 (Part 1):2011 Power

    transformers: Part 1 General (first

    revision)

    Technically

    Equivalent with

    IEC 60076-1

    :2000

  • IEC 60076-2:2011, Power

    transformers Part 2: Temperature rise for liquid-immersed

    Transformers

    IS 2026(Part 2):2010 Power

    Transformers - Part 2 Temperature rise

    (first revision)

    Technically

    Equivalent with

    IEC 60076-2

    :1993

    IEC 60076-3:2000, Power

    transformers Part 3: Insulation levels, dielectric tests and external

    clearances in air

    IS 2026(Part 3):2009 Power

    Transformers - Part 3 Insulaiton levels,

    dielectric tests and external clearances

    in air (third revision)

    Identical with

    IEC 60076-3

    :2000

    IEC 60076-5:2006, Power

    transformers Part 5: Ability to withstand short circuit

    IS 2026(Part 5):2011 Power

    Transformers - Part 5 Ability to

    withstand short circuit (first revision)

    Technically

    Equivalent with

    IEC 60076-5

    :2006

    IEC 60076-7:2005, Power

    transformers Part 7: Loading guide for oil-immersed power

    Transformers

    IS 2026(Part 7):2009 Power

    Transformers - Part 7 Loading guide

    for oil immersed power transformers

    Identical with

    IEC 60076-7

    :2005

    IEC 60076-8:1997, Power

    transformers Application guide IS 2026(Part 8):2009 Power

    Transformers - Part 8 Application

    guide

    Identical with

    IEC 60076-8

    :1997

    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

    Title

    IEC 60076-11:2004,

    Power transformers Part 11: Dry-type transformers

    IEC 60076-12:2008, Power transformers Part 12: Loading guide for dry-type power Transformers

    IEC 60076-13:2006

    Power transformers Part 13: Self-protected liquid-filled transformers

    IEC 61100

    Classification of insulating liquids according to fire-point and net

    calorific value

    IEC 61378-1:2011

    Converter transformers Part 1: Transformers for industrial applications

    IEC 61378-3:2006

    Converter transformers Part 3: Application guide

    IEC 61400-1:2005

    Wind turbines Part 1: Design requirements

  • ISO 12944 (all parts)

    Paints and varnishes Corrosion protection of steel structures by protective paint systems

    Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

  • Doc: ETD 16 (10683)

    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

    POWER TRANSFORMERS PART 18: MEASUREMENT OF FREQUENCY RESPONSE

    18 :

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 18) which is identical with IEC 60076-18 : 2012 Power transformers Part 18: Measurement of frequency response issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the

    recommendation of the Transformers 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.

    Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

  • Doc: ETD 16 (10691)

    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

    POWER TRANSFORMERS PART 19: RULES FOR THE DETERMINATION OF UNCERTAINTIES IN THE

    MEASUREMENT OF THE LOSSES ON POWER TRANSFORMERS AND REACTORS

    19 :

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 19) which is identical with IEC 60076-19 : 2013 Power transformers Part 19: Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactors issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the

    Transformers 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, 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 60076-1:2011 Power

    transformers Part 1: General IS 2026(Part 1):2011 Power

    transformers: Part 1 General (first

    revision)

    Technically

    Equivalent with

    IEC 60076-1

    :2000

  • IEC 60076-2:2011, Power

    transformers Part 2: Temperature rise for liquid-immersed

    transformers

    IS 2026(Part 2):2010 Power

    Transformers - Part 2 Temperature rise

    (first revision)

    Technically

    Equivalent with

    IEC 60076-2

    :1993

    Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

  • Doc: ETD 16 (10692)

    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

    POWER TRANSFORMERS PART 21: STANDARD REQUIREMENTS, TERMINOLOGY, AND TEST CODE

    FOR STEP-VOLTAGE REGULATORS

    21 : ,

    Last date of receipt of comments: 23 October 2016

    ______________________________________________________________

    Transformers Sectional Committee, ETD 16

    NATIONAL FOREWORD

    This Indian Standard (Part 21) which is identical with IEC 60076-21 : 2011 Power transformers Part 21: Standard requirements, terminology, and test code for step-voltage regulators issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau

    of Indian Standards on the recommendation of the Transformers 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, 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 60214-1, Tap-changersPart 1: Performance requirements and

    test methods

    IS 8468:1977 On-load tap changers Identical with

    IEC 60214: 1966

  • IEC 60255-5, Electrical RelaysPart 5: Insulation coordination for

    measuring relays and protection

    equipmentRequirements and tests.

    Doc ETD 35 (6530) Electrical relays Part 5: Insulation coordination for

    measuring relays and protection

    equipment requirements and tests (under print)

    Identical with

    IEC 60255-5

    :2000

    IEC 60255-21-1, Electrical

    RelaysPart 21: Vibration, shock, bump and seismic tests on

    measuring relays and protection

    equipmentSection one: Vibration tests (sinusoidal).

    Doc ETD 35 (6536) Electrical relays

    Part 21: Vibration, shock, bump and

    seismic test on measuring relays and

    protection equipment section one vibration tests (sinusoidal) (under

    print)

    Identical with

    IEC 60255-21-1:

    1988

    IEC 60255-22-1, Measuring relays

    and protection equipmentPart 22-1: Electrical disturbance tests 1 MHz burst immunity tests.

    Doc ETD 35 (6539) Measuring relays

    and protection equipment Part 22- 1: Electrical disturbance tests 1 mhz burst immunity tests (under print)

    Identical with

    IEC 60255-22-1

    :2007

    IEC 60255-22-2, Measuring relays

    and protection equipmentPart 22-2: Electrical disturbance tests Electrostatic discharge tests.

    Doc ETD 35 (6540) Measuring relays

    and protection equipment Part 22- 2: Electrical disturbance tests electrostatic discharge tests (under

    print)

    Identical with

    IEC 60255-22-2

    :2008

    IEC 60255-22-3, Measuring relays

    and protection equipmentPart 22-3: Electrical disturbance tests Radiated electromagnetic field

    immunity

    Doc ETD 35 (6541) Measuring relays

    and protection equipment Part 22- 3: Electrical disturbance tests radiated electromagnetic field immunity (under

    print)

    Identical with

    IEC 60255-22-3

    :2007

    IEC 60255-22-4, Measuring relays

    and protection equipmentPart 22-4: Electrical disturbance tests Electrical fast transient/burst

    immunity test.

    Doc ETD 35 (6542) Measuring relays

    and protection equipment Part 22- 4: Electrical disturbance tests electrical fast transient/burst immunity test

    (under print)

    Identical with

    IEC 60255-22-4

    :2008

    IEC 60255-22-5, Measuring relays

    and protection equipmentPart 22-5: Electrical disturbance tests

    for measuring relays and

    protection equipmentSurge immunity test.

    Doc ETD 35 (6543) Measuring relays

    and protection equipment Part 22- 5: Electrical disturbance tests surge immunity test (under print)

    Identical with

    IEC 60255-22-5:

    2008

    IEC 60255-22-6, Electrical

    relaysPart 22-6: Electrical disturbance tests for measuring

    relays and protection equipmentImmunity to conducted

    disturbances induced by radio

    Doc ETD 35 (6544) Electrical relays Part 22-6: Electrical disturbance tests

    for measuring relays and protection

    equipment Immunity to conducted disturbances induced by radio

    frequency fields (under print)

    Identical with

    IEC 60255-22-6

    :2001

  • frequency fields.

    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

    Title

    IEC 60068-2-1 Environmental testingPart 2-1: TestsTest A: Cold

    IEC 60068-2-2, Environmental testingPart 2-2: TestsTest B: Dry heat.

    IEC 60068-2-30 Environmental testingPart 2-30: TestsTest Db: Damp heat, cyclic (12 h + 12 h cycle).

    IEEE Std 4 IEEE Standard Techniques for High-Voltage Testing.

    IEEE Std C37.90.1 IEEE Standard Surge Withstand Capability (SWC) Tests for Relays and Relay Systems Associated with Electric Power Apparatus

    IEEE Std C37.90.2 IEEE Standard for Withstand Capability of Relay Systems to Radiated Electromagnetic Interference from Transceivers.

    IEEE Std C37.90.3 IEEE Standard Electrostatic Discharge Tests for Protective Relays.

    IEEE Std C57.12.31 IEEE Standard for Pole-Mounted EquipmentEnclosure Integrity

    IEEE Std C57.91 IEEE Guide for Loading Mineral-Oil-Immersed Transformers

    IEEE Std C57.98 IEEE Guide for Transformer Impulse Tests.

    IEEE Std C57.131 IEEE Standard Requirements for Load Tap Changers

    Only the English language text of the IEC Standard has been retained while adopting it as an

    Indian Standard and as such the page numbers given here are not same as in IEC 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 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.

    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: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: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: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: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: