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BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg New Delhi 110002
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
ाव ास ाम – भाग 10-1 साउड लवल ञात क ना - अनर ोग ससात
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
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
ाव ास ाम – भाग 14 : चत ा ा ो सारी क र ोग स रववत – व वित ाव ास ाम
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
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
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
ाव ास ाम – ाग 19 : ाव ास ाम एव र एट स कसा क ा अन नितता ञात क की न ावल
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
ा र ा ामर – भाग 21 : ट – ोट ा रगलटर ानक अ षाए, ाररभाषिक दा ल
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-changers—Part
1: Performance requirements and
test methods
IS 8468:1977 On-load tap changers Identical with
IEC 60214: 1966
IEC 60255-5, Electrical Relays—Part 5: Insulation coordination for
measuring relays and protection
equipment—Requirements 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
Relays—Part 21: Vibration, shock,
bump and seismic tests on
measuring relays and protection
equipment—Section 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 equipment—Part
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 equipment—Part
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 equipment—Part
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 equipment—Part
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 equipment—Part
22-5: Electrical disturbance tests
for measuring relays and
protection equipment—Surge
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
relays—Part 22-6: Electrical
disturbance tests for measuring
relays and protection equipment—Immunity 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