Programme of work

• Scope : To prepare standards regarding insulated bushing, insulators for overhead lines, insulators for sub-stations and jointing accessories which are integral parts of insulators
• Liaison :
  IEC TC 36 - Insulators - Participating (P)

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  IEC TC 36 / SC 36A - Insulated bushings - Participating (P)

SI. No.	IS No.	Title	Reaffirmation Details	No. of Amendments	Degree of Equivalence
1.	IS 10136 : 1982 Reviewed In : 2021	Code of practice for selection of disc insulator fittings for highest system voltages of 72.5 kV and above	July, 2021	-	Indigenous
2.	IS 10314 : 1982 Reviewed In : 2021	Dimensions for ceramic bushings for terminals	January, 2021	-	Modified/Technically Equivalent
3.	IS 12676 : 1989 Reviewed In : 2021	Oil impregnated paper insulated condenser bushings - Dimensions and requirements	July, 2021	-	Indigenous
4.	IS 13134 : 1992 Reviewed In : 2018	Guide for the selection of insulators in respect of polluted conditions	April, 2018	-	Modified/Technically Equivalent
5.	IS 13305 : 1992 Reviewed In : 2018	Permissible limits of visual defects for insulating porcelains for electrical circuits	April, 2018	-	Modified/Technically Equivalent
6.	IS 13312 : 1992 Reviewed In : 2018	Dimensions of porcelain oil filled transformer bushings (Rated 52 KV) for medium polluted atmospheres	April, 2018	-	Indigenous
7.	IS 1441 : 1989 Reviewed In : 2019	Insulator stalks for telegraph and telephone lines - Specification (Second Revision)		-	Indigenous
8.	IS 1445 : 1977 Reviewed In : 2019	Specification for porcelain insulators for overhead power lines with a nominal voltage up to and including 1 000 V (Second Revision)		5	Indigenous
9.	IS 15137 : 2002 Reviewed In : 2024	Metal connecting lugs for porcelain transformer bushings - Specification	August, 2024	-	Indigenous
10.	IS 16683 (Part 1) : 2018 IEC TS 60815-1 : 2008 Reviewed In : 2024	Selection and Dimensioning of High-Voltage Insulators Intended for Use in Polluted Conditions Part 1 Definitions, Information and General Principles	August, 2024	-	Identical under dual numbering
11.	IS 16683 (Part 2) : 2018 IEC TS 60815-2 : 2008 Reviewed In : 2024	Selection and Dimensioning of High-Voltage Insulators Intended for Use in Polluted Conditions Part 2 Ceramic and Glass Insulators for a.c. Systems	August, 2024	-	Identical under dual numbering
12.	IS 16683 (Part 3) : 2018 IEC/TS 60815-3 : 2008 Reviewed In : 2024	Selection and dimensioning of high - Voltage insulators intended for use in polluted conditions: Part 3 polymer insulators for a.c. systems	August, 2024	-	Identical under dual numbering
13.	IS 16683 (Part 4) : 2021 60815-4	High-Voltage Insulators Intended for use in Polluted Conditions - Selection and Dimensioning Part 4 Insulators for d.c. Systems		-	Identical under dual numbering
14.	IS 16684 : 2018 IEC 62217 : 2012 Reviewed In : 2024	Polymeric HV Insulators for Indoor and Outdoor Use-General Definitions, Test Methods and Acceptance Criteria	August, 2024	-	Identical under dual numbering
15.	IS 16685 : 2018 IEC 62223 : 2009 Reviewed In : 2024	Insulators - Glossary of terms and definitions	August, 2024	-	Identical under dual numbering
16.	IS 16686 : 2018 IEC TR 62662 : 2010 Reviewed In : 2024	Guidance for Production, Testing and Diagnostics of Polymer Insulators with Respect to Brittle Fracture of Core Materials	August, 2024	-	Identical under dual numbering
17.	IS 16687 : 2018 IEC TR 62730 : 2012 Reviewed In : 2024	HV Polymeric Insulators for Indoor and Outdoor Use Tracking and Erosion Testing by Wheel Test and 5000 h Test	August, 2024	-	Identical under dual numbering
18.	IS 16784 : 2018 IEC 61109:2008 Reviewed In : 2024	Insulators for Overhead Lines - Composite Suspension and Tension Insulators for a.c. Systems with a Nominal Voltage Greater Than 1 000 V - Definitions, Test Methods and Acceptance Criteria	August, 2024	-	Identical under dual numbering
19.	IS 2486 (Part 1) : 1993 Reviewed In : 2018	Metal fittings of insulators for overhead power lines with nominal voltage greater than 1 000 V - Specification: Part 1 general requirements and tests (Second Revision)	April, 2018	-	Indigenous
20.	IS 2486 (Part 2) : 1989 Reviewed In : 2019	Insulator fittings for overhead power lines with nominal voltage greater than 1 000 V - Specification: Part 2 dimensional requirements (Second Revision)		-	Indigenous
21.	IS 2486 (Part 3) : 1974 Reviewed In : 2021	Specification for insulator fittings for overhead power lines with a nominal voltage greater than 1 000 volts: Part 3 locking devices	July, 2021	-	Modified/Technically Equivalent
22.	IS 2486 (Part 4) : 1981 61372-2 Reviewed In : 2021	Specification for insulator fittings for overhead power lines with a nominal voltage greater than 1 000 V: Part iv tests for locking devices	July, 2021	-	Modified/Technically Equivalent
23.	IS 283 : 1976 Reviewed In : 2021	Specification for porcelain insulators for telegraph and telephone lines (Third Revision)	July, 2021	4	Indigenous
24.	IS 3347 (Part 1/Sec 1) : 1979 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in normal and lightly polluted atmospheres: Part 1 up to and including 1 Kv: Sec 1 porcelain parts (First Revision)		1	Modified/Technically Equivalent
25.	IS 3347 (Part 1/Sec 2) : 1979 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in normal and lightly polluted atmospheres: Part i up to and including 1 kV: Sec 2 metal parts (First Revision)		3	Modified/Technically Equivalent
26.	IS 3347 (Part 2/Sec 1) : 1979 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in normal and lightly polluted atmospheres: Part ii 3.6 kV bushings: Sec 1 porcelain parts (First Revision)		1	Modified/Technically Equivalent
27.	IS 3347 (Part 2/Sec 2) : 1979 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in normal and lightly polluted atmospheres: Part ii 3.6 kV bushings: Sec 2 metal parts (First Revision)		3	Modified/Technically Equivalent
28.	IS 3347 (Part 3/Sec 1) : 1988 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in 1 lightly polluted atmospheres: Part 3 17.5 kV bushings: Sec 1 porcelain parts (Second Revision)		-	Modified/Technically Equivalent
29.	IS 3347 (Part 3/Sec 2) : 1982 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in normal and lightly polluted atmospheres: Part iii 12 and 17.5 kV bushings: Sec 2 metal parts (First Revision)		2	Modified/Technically Equivalent
30.	IS 3347 (Part 4/Sec 1) : 1988 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in lightly polluted atmospheres: Part 4 24 kv bushings: Sec 1 porcelain parts (Second Revision)		1	Indigenous
31.	IS 3347 (Part 4/Sec 2) : 1982 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in normal and lightly polluted atmospheres: Part 4 24 kV bushings: Sec 2 metal parts (First Revision)		3	Modified/Technically Equivalent
32.	IS 3347 (Part 5/Sec 1) : 1979 Reviewed In : 2019	Dimension for porcelain transformer bushings for use in normal and lightly polluted atmospheres: Part 5 36 kV bushings: Sec 1 porcelain parts (Second Revision)	April, 2019	1	Modified/Technically Equivalent
33.	IS 3347 (Part 5/Sec 2) : 1979 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in normal and lightly polluted atmospheres: Part 5 36 kV bushings: Sec 2 metal parts (First Revision)		2	Indigenous
34.	IS 3347 (Part 8/Sec 1) : 1988 Reviewed In : 2019	Dimensions for porcelain transformer bushings for use in lightly polluted atmospheres: Part 8 52 kV bushings: Sec 1 porcelain part	April, 2019	-	Modified/Technically Equivalent
35.	IS 3347 (Part 8/Sec 2) : 1992 Reviewed In : 2019	Dtmensions for porcelain transformer bushings for use in lightly polluted atmospheres: Part 8 52 kV bushings: Sec 2 metal parts	April, 2019	-	Indigenous
36.	IS 4257 (Part 1) : 1981 Reviewed In : 2019	Dimensions for clamping arrangements for porcelain transformer bushings: Part 1 for 12 kV to 52 kV bushings (First Revision)		1	Modified/Technically Equivalent
37.	IS 4257 (Part 2) : 1986 Reviewed In : 2019	Dimensions for clamping arrangements for porcelain transformer bushings: Part 2 for 72.5 kV and 123 kV bushings		-	Modified/Technically Equivalent
38.	IS 4318 : 1993 Reviewed In : 2018	Solid core porcelain insulators for overhead traction lines - Specification (First Revision)	April, 2018	-	Indigenous
39.	IS 5300 : 1969 Reviewed In : 2019	Specification for porcelain guy strain insulators		1	Modified/Technically Equivalent
40.	IS 5350 (Part 1) : 1970 Reviewed In : 2019	Dimensions of indoor and outdoor porcelain post insulators and post insulator units for systems with nominal voltages greater than 1000 V: Part 1 indoor post insulators		2	Indigenous
41.	IS 5350 (Part 2) : 1973 Reviewed In : 2019	Dimensions of indoor and outdoor porcelain post insulators and post insulator units for systems with nominal voltage greater than 1000 V: Part 2 outdoor cylindrical post insulators (First Revision)		-	Modified/Technically Equivalent
42.	IS 5350 (Part 3) : 1971 Reviewed In : 2019	Dimensions of indoor and outdoor porcelain post insulators and post insulator units for systems with nominal voltages greater than 1000 V: Part 3 outdoor pedestal post insulators		3	Modified/Technically Equivalent
43.	IS/IEC 60120 : 2020 IEC 60120:2020	Ball and socket couplings of string insulator units - Dimensions		-	Identical under single numbering
44.	IS/IEC 60137 : 2017 IEC 60137: 2017 Reviewed In : 2024	Insulated Bushings for Alternating Voltages above 1 000 V	August, 2024	-	Identical under single numbering
45.	IS/IEC 60168 : 2000 IEC 60168 : 2001 Reviewed In : 2024	Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 000 v	August, 2024	-	Identical under single numbering
46.	IS/IEC 60273 : 1990 IEC 60273 : 1990	Characteristic of indoor and outdoor post insulators for systems with nominal voltages greater than 1 000 v		-	Identical under single numbering
47.	IS/IEC 60305 : 1995	Insulatore for Overhead Lines with a Nominal Voltage Above 1 000 V - Ceramic or Glass Insulator Units for a.c. Systems - Characteristics of Insulator Units of the Cap and Pin Type		-	Identical under single numbering
48.	IS/IEC 60305 : 2021 IEC 60305:2021	Insulators for Overhead Lines with a Nominal Voltage Above 1 000 V - Ceramic or Glass Insulator Units for a.c. Systems - Characteristics of Insulator Units of the Cap and Pin Type ( First Revision )		-	Identical under single numbering
49.	IS/IEC 60372 : 1984 Reviewed In : 2020	Locking devices for ball and socket couplings of string insulators units - Dimensions and tests	August, 2020	-	Identical under single numbering
50.	IS/IEC 60372 : 2020 IEC 60372:2020	Locking devices for ball and socket couplings of string insulators units - Dimensions and tests (First Revision)		-	Identical under single numbering
51.	IS/IEC 60383-1 : 1993 IEC 60383-1 : 1993	Insulators for Overhead Lines with a Nominal Voltage Above 1 000 V Part 1 Ceramic or Glass Insulator Units for a.c. Systems — Definitions, Test Methods and Acceptance Criteria		-	Identical under single numbering
52.	IS/IEC 60383-1 : 2023 IEC 60383-1: 2023	Insulators for Overhead Lines with a Nominal Voltage above 1 000 V Part 1 Ceramic or Glass Insulator Units for a.c Systems - Definitions, Test Methods and Acceptance Criteria (First Revision)		-	Identical under single numbering
53.	IS/IEC 60383-2 : 1993 IEC 60383-2 : 1993	Insulators for Overhead Lines with a Nominal Voltage Above 1 000 V Part 2 Insulator Strings and Insulator Sets for a.c. Systems — Definitions, Test Methods and Acceptance Criteria		-	Identical under single numbering
54.	IS/IEC 60433 : 2021 IEC 60433:2021	Insulators for overhead lines with a nominal voltage above 1 000 V - Ceramic insulators for ac systems - Characteristics of insulator units of the long rod type		-	Identical under single numbering
55.	IS/IEC 60471 : 2020 IEC 60471:2020	Clevis and Tongue Couplings of String Insulator Units � Dimensions (First Revision)		-	Identical under single numbering
56.	IS/IEC/TR 60575 : 1977 IEC TR 60575:1977	Thermal-mechanical performance test and mechanical performance test on string insulator units		-	Identical under single numbering
57.	IS/IEC 60720 : 1981 IEC 60720:1981	Line Post Insulators Characteristics		-	Identical under single numbering
58.	IS/IEC 61211 : 2004 IEC 61211:2004 Reviewed In : 2024	Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1 000 V - Impulse puncture testing in air	August, 2024	-	Identical under single numbering
59.	IS/IEC/TS 61245 : 2015 IEC 61245 : 2015 Reviewed In : 2024	Artificial pollution tests on high - Voltage ceramic and glass insulators to be used on d.c. systems	August, 2024	1	Identical under single numbering
60.	IS/IEC 61325 : 1995 IEC 61325:1995	Insulators for overhead lines with a nominal voltage above 1 000 V - Ceramic or glass insulator units for dc systems - Definitions test methods and acceptance criteria		-	Identical under single numbering
61.	: 2023 IEC 61462: 2023	Composite Hollow Insulators - Pressurized and Unpressurized Insulators For Use in Electrical Equipment with a.c Rated Voltage Greater than 1 000 V and d.c Voltage Greater than 1 500 V - Definitions, Test Methods, Acceptance Criteria and Design Recommendations ( First Revision )		-	Identical under single numbering
62.	IS/IEC 61462 : 2007 IEC 61462:2007	Composite hollow insulators - Pressurized and unpressurized insulators for use in electrical equipment with rated voltage greater than 1 000 V - Definitions test methods acceptance criteria and design recommendations		-	Identical under single numbering
63.	IS/IEC/TS 61463 : 2016 61463-2016 Reviewed In : 2024	Bushings - Seismic qualification	August, 2024	-	Identical under single numbering
64.	IS/IEC/TS 62073 : 2016 IEC/TS 62073 : 2016 Reviewed In : 2024	Guidance on the Measurement of Hydrophobicity of Insulator Surfaces	August, 2024	-	Identical under single numbering
65.	IS/IEC 62155 : 2003 IEC 62155 : 2003 Reviewed In : 2024	Hollow Pressurized and Unpressurized Ceramic and Glass Insulators for Use in Electrical Equipment with Rated Voltages Greater Than 1 000 V	August, 2024	-	Identical under single numbering
66.	IS/IEC/TS 62371 : 2008 62371:2008 Reviewed In : 2024	Characteristics of hollow pressurised and unpressurised ceramic and glass insulators for use in electrical equipment with rated voltages greater than 1000 V	August, 2024	-	Identical under single numbering
67.	IS/IEC/TS 62896 : 2015 62896:2015	Hybrid insulators for ac and dc for high-voltage applications - Definitions test methods and acceptance criteria		-	Identical under single numbering
68.	IS/IEC/IEEE 65700-19-3 : 2014 IEC/IEEE 65700-19-03 : 2014 Reviewed In : 2024	Bushing for DC Application	August, 2024	-	Identical under single numbering
69.	IS 731 : 1971 Reviewed In : 2021	Specification for procelain insulators for overhead power lines with a nominal voltage greater than 1000 V (Second Revision)	June, 2021	7	Modified/Technically Equivalent
70.	IS 7421 : 1988 Reviewed In : 2019	Specification for porcelain bushings for alternating voltages upto and including 1000 v (First Revision)		-	Indigenous
71.	IS 7648 : 1975 Reviewed In : 2019	Specification for silicone compounds for application on high voltage porcelain insulators		-	Indigenous
72.	IS 7935 : 1975 Reviewed In : 2021	Specification for insulator fittings for overhead power lines with a nominal voltage up to and including 1000 v	July, 2021	3	Indigenous
73.	IS 8263 : 2018 IEC 60437 : 1997	Radio interference test on high - Voltage insulators (First Revision)		-	Identical under dual numbering
74.	IS 8269 : 1976 Reviewed In : 2019	Methods for switching impulse tests on high voltage insulators	April, 2019	-	Modified/Technically Equivalent
75.	IS 8603 : 2008 Reviewed In : 2024	Dimensions for porcelain transformer bushings for use in heavily polluted atmospheres 12/17.5 kV, 24 kV and 36 kV (First Revision)	August, 2024	1	Indigenous
76.	IS 8603 (Part 4) : 2003 Reviewed In : 2024	Dimensions for porcelain transformer bushings for use in heavily polluted atmospheres: Part 4 52 kV bushings	August, 2024	-	Indigenous
77.	IS 8704 : 2018 IEC 60507 : 2013 Reviewed In : 2024	Artificial pollution test on highVoltage ceramic and glass insulators to be used on a.c. systems (Second Revision)	August, 2024	-	Identical under dual numbering
78.	IS 8765 : 1978 Reviewed In : 2019	Specification for ceramic insulating materials for electrical purposes	April, 2019	1	Modified/Technically Equivalent
79.	IS 9431 : 2024 IEC 60660 :1999	Indoor Post Insulators of Organic Material for Systems with Nominal Voltages Greater Than 1000 V UP to and Including 300 kV - Specification (First Revision)		-	Identical under dual numbering
80.	IS 9431 : 1979 Reviewed In : 2019	Specification for indoor post insulators of organic material for systems with nominal voltages greater than 1000 v up to and including 300 kV	April, 2019	-	Identical under dual numbering
81.	IS/IEEE Std1523™ : 2018 IEEE 1523:2018	Guide for the Application Maintenance and Evaluation of Room Temperature Vulcanizing RTV Silicone Rubber Insulator Coatings		-	Identical under single numbering

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SI. No.	Doc No	TITLE
1	ETD 6 (25767) Revision of: IS 8263:2018	Radio Interference Test on High-Voltage Insulators Second Revision

Product:   28  Code of Practices :    4  Methods of Test :   13  Terminology :   0  Dimensions :   27  System Standard :   0  Safety Standard :   0  Others :    3  Service Specification :    0  Process Specification :    0  Unclassified :    0

SI. No.	IS No.	Title
1.	IS 2099 : 1986 Reviewed In : 2018	Bushings for alternating voltages above 1 000 Volts
2.	IS 2544 : 1973 Reviewed In : 2016	Porcelain post insulators for systems with nominal voltage greater than 1000 V olts
3.	IS 3188 : 1980 Reviewed In : 2014	Characteristics Of String Insulator Units
4.	IS 3347 (Part 6/Sec 1) : 1977 Reviewed In : 1989	Dimensions for porcelain transformer bushings for use in lightly polluted atmospheres Part 6 72 5 kV bushings Sec 1 Porcelain parts
5.	IS 3347 (Part 6/Sec 2) : 1982 Reviewed In : 1988	Dimensions for porcelain transformer bushings for use in lightly polluted atmospheres Part 6 72 5 kV bushings Sec 2 Metal parts
6.	IS 3347 (Part 7/Sec 1) : 1977 Reviewed In : 1989	Dimensions for porcelain transformer bushings for use in lightly polluted atmospheres Part 7 123 kV bushings Sec 1 Porcelain parts
7.	IS 3347 (Part 7/Sec 2) : 1982 Reviewed In : 1988	Dimensions for porcelain transformer bushings for use in lightly polluted atmospheres Part 7 123 kV bushings Sec 2 Metal parts
8.	IS 5621 : 1980 Reviewed In : 2014	Hollow insulators for use in electrical equipment
9.	IS 8603 (Part 1) : 1977 Reviewed In : 2001	Dimensions for porcelain transformer bushings for use in heavily polluted atmospheres Part 1 12 kV and 17 5 kV bushings Amalglamating in IS 8603 2008
10.	IS 8603 (Part 2) : 1977 Reviewed In : 2001	Dimensions for porcelain transformer bushings for use in heavily polluted atmospheres Part 2 24 kV buhsings Amalgamating in IS 8603 2008
11.	IS 8603 (Part 3) : 1977 Reviewed In : 2001	Dimensions for porcelain transformer bushings for use in heavily polluted atmospheres Part 3 36 kV bushings amalgamating in IS 8063 2008

SI. No.	IS No. & Year	Title
1.	IS 1441 : 1989 Reviewed In : 2019	Insulator stalks for telegraph and telephone lines - Specification Second Revision
2.	IS 1445 : 1977 Reviewed In : 2019	Specification for porcelain insulators for overhead power lines with a nominal voltage up to and including 1 000 V Second Revision
3.	IS 15137 : 2002 Reviewed In : 2024	Metal connecting lugs for porcelain transformer bushings - Specification
4.	IS 16684 : 2018 IEC 62217 : 2012 Reviewed In : 2024	Polymeric HV Insulators for Indoor and Outdoor Use-General Definitions Test Methods and Acceptance Criteria
5.	IS 2486 (Part 2) : 1989 Reviewed In : 2019	Insulator fittings for overhead power lines with nominal voltage greater than 1 000 V - Specification Part 2 dimensional requirements Second Revision
6.	IS 2486 (Part 3) : 1974 Reviewed In : 2021	Specification for insulator fittings for overhead power lines with a nominal voltage greater than 1 000 volts Part 3 locking devices
7.	IS 283 : 1976 Reviewed In : 2021	Specification for porcelain insulators for telegraph and telephone lines Third Revision
8.	IS 4318 : 1993 Reviewed In : 2018	Solid core porcelain insulators for overhead traction lines - Specification First Revision
9.	IS 5300 : 1969 Reviewed In : 2019	Specification for porcelain guy strain insulators
10.	IS/IEC 60137 : 2017 IEC 60137: 2017 Reviewed In : 2024	Insulated Bushings for Alternating Voltages above 1 000 V
11.	IS/IEC 60273 : 1990 IEC 60273 : 1990	Characteristic of indoor and outdoor post insulators for systems with nominal voltages greater than 1 000 v
12.	IS/IEC 60305 : 2021 IEC 60305:2021	Insulators for Overhead Lines with a Nominal Voltage Above 1 000 V - Ceramic or Glass Insulator Units for a c Systems - Characteristics of Insulator Units of the Cap and Pin Type First Revision
13.	IS/IEC 60372 : 2020 IEC 60372:2020	Locking devices for ball and socket couplings of string insulators units - Dimensions and tests First Revision
14.	IS/IEC 60383-1 : 2023 IEC 60383-1: 2023	Insulators for Overhead Lines with a Nominal Voltage above 1 000 V Part 1 Ceramic or Glass Insulator Units for a c Systems - Definitions Test Methods and Acceptance Criteria First Revision
15.	IS/IEC 60383-2 : 1993 IEC 60383-2 : 1993	Insulators for Overhead Lines with a Nominal Voltage Above 1 000 V Part 2 Insulator Strings and Insulator Sets for a c Systems Definitions Test Methods and Acceptance Criteria
16.	IS/IEC 60433 : 2021 IEC 60433:2021	Insulators for overhead lines with a nominal voltage above 1 000 V - Ceramic insulators for ac systems - Characteristics of insulator units of the long rod type
17.	IS/IEC 60720 : 1981 IEC 60720:1981	Line Post Insulators Characteristics
18.	: 2023 IEC 61462: 2023	Composite Hollow Insulators - Pressurized and Unpressurized Insulators For Use in Electrical Equipment with a c Rated Voltage Greater than 1 000 V and d c Voltage Greater than 1 500 V - Definitions Test Methods Acceptance Criteria and Design Recommendations First Revision
19.	IS/IEC 62155 : 2003 IEC 62155 : 2003 Reviewed In : 2024	Hollow Pressurized and Unpressurized Ceramic and Glass Insulators for Use in Electrical Equipment with Rated Voltages Greater Than 1 000 V
20.	IS/IEC/TS 62371 : 2008 62371:2008 Reviewed In : 2024	Characteristics of hollow pressurised and unpressurised ceramic and glass insulators for use in electrical equipment with rated voltages greater than 1000 V
21.	IS/IEC/TS 62896 : 2015 62896:2015	Hybrid insulators for ac and dc for high-voltage applications - Definitions test methods and acceptance criteria
22.	IS/IEC/IEEE 65700-19-3 : 2014 IEC/IEEE 65700-19-03 : 2014 Reviewed In : 2024	Bushing for DC Application
23.	IS 731 : 1971 Reviewed In : 2021	Specification for procelain insulators for overhead power lines with a nominal voltage greater than 1000 V Second Revision
24.	IS 7421 : 1988 Reviewed In : 2019	Specification for porcelain bushings for alternating voltages upto and including 1000 v First Revision
25.	IS 7648 : 1975 Reviewed In : 2019	Specification for silicone compounds for application on high voltage porcelain insulators
26.	IS 7935 : 1975 Reviewed In : 2021	Specification for insulator fittings for overhead power lines with a nominal voltage up to and including 1000 v
27.	IS 8765 : 1978 Reviewed In : 2019	Specification for ceramic insulating materials for electrical purposes
28.	IS 9431 : 2024 IEC 60660 :1999	Indoor Post Insulators of Organic Material for Systems with Nominal Voltages Greater Than 1000 V UP to and Including 300 kV - Specification First Revision