Programme of work

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BUREAU OF INDIAN STANDARDS


Electrotechnical Department

Programme of Work




ETD16 : Transformers


  • Scope : To prepare standards on power and distribution transformers, reactors, onload tap changers, etc, without limitation on voltage or power. Transformer accessories and voltage stablizers, testing transformers and furnace transformers are included. (Instrument transformers, welding transformers and traction transformers are excluded)
  • Liaison :
    IEC TC 14 - Power transformers - Participating (P)
    IEC TC 96 - Transformers, reactors, power supply units, and combinations thereof - Participating (P)

Published Standards

SI. No.
IS No.
Title
Reaffirmation Details
No. of Amendments
Degree of Equivalence
1.
 IS 10028 (Part 1) : 1985
Reviewed In : 2021
Code of practice for selection, installation and maintenance of transformers: Part 1 selection
July, 2021
-
Indigenous
2.
 IS 10028 (Part 2) : 1981
Reviewed In : 2021
Code of practice for selection, installation and maintenance of transformers: Part 2 installation
July, 2021
-
Indigenous
3.
 IS 10028 (Part 3) : 1981
Reviewed In : 2018
Code of practice for selection, installation and maintenance of transformers: Part 3 maintenance
July, 2018
1
Indigenous
4.
 IS 10161 : 1982
Reviewed In : 2021
Specification for moving coil voltage regulators
July, 2021
-
Indigenous
5.
 IS 1180 (Part 1) : 2014
Reviewed In : 2019
Outdoor Type Oil Immersed Distribution Transformers Upto and Including 2 500 kVA, 33kV - Specification Part 1 Mineral Oil Immersed (Fourth Revision)
4
Indigenous
6.
 IS 1180 (Part 3) : 2021
Outdoor/Indoor Type Liquid Immersed Distribution Transformers Up to and Including 2 500 kVA, 33 kV — Specification Part 3 Natural/Synthetic Organic Ester Liquid Immersed
-
Indigenous
7.
 IS 12977 : 1990
Reviewed In : 2019
Arc furnace transformers specification
November, 2019
-
Indigenous
8.
 IS 13956 : 1994
Reviewed In : 2019
Testing transformers - Specification
November, 2019
-
Indigenous
9.
 IS 18284 : 2023
REPAIR OF DISTRIBUTION TRANSFORMERS - CODE OF PRACTICE
-
Indigenous
10.
 IS 2026 (Part 1) : 2011
Reviewed In : 2021
Power transformers: Part 1 general (Second Revision)
November, 2021
1
Modified/Technically Equivalent
11.
 IS 2026 (Part 2) : 2010
Reviewed In : 2020
Power transformers: Part 2 temperature - Rise (First Revision)
March, 2020
-
Modified/Technically Equivalent
12.
 IS 2026 (Part 3) : 2018
IEC 60076-3 : 2000
Reviewed In : 2023
Power transformers: Part 3 insulation levels, dielectric tests and external clearances in air (Fourth Revision)
May, 2023
-
Identical under dual numbering
13.
 IS 2026 (Part 4) : 1977
IEC 60076
Reviewed In : 2021
Specification for power transformers: Part 4 terminal markings, tappings and connections (First Revision)
November, 2021
2
Identical under dual numbering
14.
 IS 2026 (Part 5) : 2011
Reviewed In : 2016
Power transformers: Part 5 ability to with stand short circuit (First Revision)
December, 2016
-
Modified/Technically Equivalent
15.
 IS 2026 (Part 6) : 2017
IEC 60076-6 : 2007
Power transformers: Part 6 reactors
-
Identical under dual numbering
16.
 IS 2026 (Part 7) : 2009
IEC 60076-7
Reviewed In : 2019
Power transformers: Part 7 loading guide for oil - Immersed power transformers
March, 2019
-
Identical under dual numbering
17.
 IS 2026 (Part 8) : 2009
IEC 60076-8
Reviewed In : 2019
Power transformers: Part 8 application guide
March, 2019
-
Identical under dual numbering
18.
 IS 2026 (Part 10) : 2009
IEC 60076-10
Reviewed In : 2019
Power transformers: Part 10 determination of sound levels
March, 2019
-
Identical under dual numbering
19.
 IS 2026 (Part 10/Sec 1) : 2018
IEC 60076 -10-1 : 2016
Reviewed In : 2023
Power transformers: Part 10 determination of sound levels
March, 2023
-
Identical under single numbering
20.
 IS 2026 (Part 11) : 2021
IEC 60076-11 : 2018
Power Transformers Part 11 Dry-Type Transformers
-
Identical under dual numbering
21.
 IS 2026 (Part 12) : 2018
IEC 60076-12 : 2008
Reviewed In : 2023
Power transformers: Part 12 loading guide for dry - Type power transformers
March, 2023
-
Identical under dual numbering
22.
 IS 2026 (Part 14) : 2018
IEC 60076-14 : 2013
Reviewed In : 2023
Power transformers: Part 14 liquid - Immersed power transformers using high - Temperature insulation materials
March, 2023
-
Identical under dual numbering
23.
 IS 2026 (Part 15) : 2018
IEC 60076-15 : 2015
Reviewed In : 2023
Power transformers: Part 15 gas - Filled power transformers
March, 2023
-
Identical under dual numbering
24.
 IS 2026 (Part 16) : 2023
60076-16 : 2018
Power transformers: Part 16 transformers for wind turbine applications
-
Identical under dual numbering
25.
 IS 2026 (Part 18) : 2018
IEC 60076-18 : 2012
Power transformers: Part 18 measurement of frequency response
-
Identical under dual numbering
26.
 IS 2026 (Part 19) : 2018
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
-
Identical under dual numbering
27.
 IS 2026 (Part 21) : 2018
IEC 60076-21 : 2011
Power transformers: Part 21 standard requirements, terminology and test code for step - Voltage regulators
-
Identical under dual numbering
28.
 IS 3639 : 1966
Reviewed In : 2021
Specification for fittings and accessories for power transformers
July, 2021
-
Indigenous
29.
 IS 5142 : 1969
Reviewed In : 2021
Reaffirmed but not taken up for revision
Specification for continuously variable voltage auto - Transformers
July, 2021
2
Indigenous
30.
 IS/IEC 61558-1 : 2017
61558-1
Safety of Transformers, Reactors, Power Supply Units and Combinations Thereof Part 1 General Requirements and Tests ( First Revision )
-
Identical under single numbering
31.
 IS/IEC 61558-1 : 1997
Reviewed In : 2018
Safety of power transformers, power supply units and similar: Part 1 general requirements and tests
July, 2018
-
Identical under single numbering
32.
 IS/IEC 61558-2-4) : 2021
61558-2-4
Safety of Transformers, Reactors, Power Supply Units and Combinations Thereof Part 2 Particular Requirements and Tests for Safety Isolating Transformers and Power Supply Units Incorporating Section 4 Isolating Transformers for General Applications
-
Identical under single numbering
33.
 IS/IEC 61558-2-6 : 1997
Reviewed In : 2018
Safety of power transformers, power supply units and similar: Part 2 particular requirement: Sec 6 safety isolating transformers for general use
July, 2018
-
Identical under single numbering
34.
 IS/IEC 61558-2-6) : 2021
61558-2-6
Safety of Transformers, Reactors, Power Supply Units and Combinations Thereof Part 2 Particular Requirements and Tests for Safety Isolating Transformers and Power Supply Units Incorporating Section 6 Safety Isolating Transformers for General Applications
-
Identical under single numbering
35.
 IS/IEC 61558-2-7 : 2007
IEC 61558_2_7
Reviewed In : 2021
Safety of power transformers, power supplies reactors and similar products: Part 2 - 7 particular requirements and tests for transformers and power supplies for toys
August, 2021
-
Identical under single numbering
36.
 IS 8447 : 1989
Reviewed In : 2018
Manually operated voltage regulators for domestic use - Specification (First Revision)
April, 2018
1
Indigenous
37.
 IS 8448 : 1989
Reviewed In : 2019
Automatic line voltage correctors (Step Type) for domestic use - Specification (First Revision)
March, 2019
2
Indigenous
38.
 IS 8468 (Part 1) : 2018
IEC 60214-1 : 2014
Tap - Changers Part 1 Performance Requirements and Test Methods (First Revision)
-
Identical under dual numbering
39.
 IS 8478 : 1977
Reviewed In : 2021
Application guide for on - Load tap - Changers
July, 2021
-
Modified/Technically Equivalent
40.
 IS 9147 : 1979
Reviewed In : 2021
Specification for cable sealing boxes for oil - Immersed transformers suitable for paper - Insulated lead sheathed cables for highest system voltages from 12 kV up to and including 36 kV
July, 2021
-
Modified/Technically Equivalent
41.
 IS 9815 (Part 1) : 1994
Reviewed In : 2019
Servo - Motor operated automatic line voltage correctors: Part 1 correctors for single - Phase applications - Specification (Second Revision)
November, 2019
-
Indigenous

Standards Under Develpoment

Projects Approved

SI. No.
Doc No
TITLE
No Records Found

Preliminary Draft Standards

SI. No.
Doc No
TITLE
No Records Found

Drafts Standards in WC Stage

SI. No.
Doc No
TITLE
1
ETD 16 (24319)
Revision of: IS 10161:1982
SPECIFICATION FOR MOVING COIL VOLTAGE REGULATORS

Draft Standards Completed WC Stage

SI. No.
Doc No
TITLE
1
ETD 16 (23039)
Onsite diagnostic testing of power transformers for condition health assessment
2
ETD 16 (23880)
Revision of: IS 2026:2009
Power transformers Part 10 determination of sound levels

Finalized Draft Indian Standard

SI. No.
Doc No
TITLE
1
ETD 16 (24249)
Revision of: IS 9815:1994
SERVO-MOTOR OPERATED AUTOMATIC LINE VOLTAGE CORRECTORS PART 1 CORRECTORS FOR SINGLE-PHASE APPLICATIONS - SPECIFICATION

Finalized Draft Indian Standards under Print

SI. No.
Doc No
TITLE
1
ETD 16 (19302)
Power Transformers Part 4 Guide to the Lightning Impulse and Switching Impulse Testing Power Transformers and Reactors
2
ETD 16 (19303)
Guide for the Application Specification and Testing of Phase- Shifting Transformers
3
ETD 16 (19305)
Transformers Part 57 Power Transformers Section 129 Transformers for HVDC Applications IEC IEEE 60076-57-129 2017 MOD
4
ETD 16 (19308)
TRANSFORMERS PART 57 POWER TRANSFORMERS SECTION 1202 LIQUID IMMERSED PHASE SHIFTING TRANSFORMERS IEC IEEE 60076-57-1202 2017 MOD
5
ETD 16 (23875)
Power transformers Part 3 insulation levels dielectric tests and external clearances in air Fourth Revision Amendment - 1
6
ETD 16 (23877)
Power transformers Part 10 determination of sound levels Amendment - 1


Aspect Wise Report

 
 Product:   22
 Code of Practices :    10
 Methods of Test :   5
 Terminology :   0
 Dimensions :   1
 System Standard :   0
 Safety Standard :   1
 Others :    0
 Service Specification :    0
 Process Specification :    0
 Unclassified :    0
 


Annexure-I :List of Indian Standards Withdrawn/Superseded

SI. No.
IS No.
Title
1.
 IS 10561 : 1983
IEC 606 91978)
Reviewed In : 2011
Application guide for power transformers
2.
 IS 11171 : 1985
IEC 60727
Reviewed In : 2016
Specification for dry - Type power transformers
3.
 IS 1180 (Part 2) : 1989
Reviewed In : 2008
Outdoor Type Three-phase Distribution Transformers Up To And Including 100 Kva 11 Kv part 2 Sealed Type
4.
 IS 13964 : 1994
IEC 551
Reviewed In : 2019
Methods of measurement of transformer and reactor sound levels
5.
 IS 1496 : 1959
Transformers used in vibrator power supplies
6.
 IS 1886 : 1961
Code of practice for installation and maintenance of transformers
7.
 IS 3151 : 1982
IEC 60289
Reviewed In : 2016
Earthing transformers
8.
 IS 5553 (Part 1) : 1989
IEC 60289
Reviewed In : 2013
Reactors - Part 1 General
9.
 IS 5553 (Part 2) : 1990
IEC 60289
Reviewed In : 2013
Reactors Part 2 Shunt reactors
10.
 IS 5553 (Part 3) : 1990
IEC 60289
Reviewed In : 2013
Reactors Part 3 Current limiting reactors and neutral earthing reactors
11.
 IS 5553 (Part 4) : 1989
IEC 60289
Reviewed In : 2014
Reactors Part 4 Damping reactors
12.
 IS 5553 (Part 5) : 1989
IEC 60289
Reviewed In : 2014
Reactors Part 5 Tuning reactors
13.
 IS 5553 (Part 6) : 1990
IEC 60289
Reviewed In : 2016
Reactors Part 6 Earthing transformers Neutral couplers
14.
 IS 5553 (Part 7) : 1990
IEC 60289
Reviewed In : 2014
Reactors Part 7 Arc supression reactors
15.
 IS 5553 (Part 8) : 1990
IEC 60289
Reviewed In : 2014
Reactors Part 8 Smoothing reactors
16.
 IS 6600 : 1972
Reviewed In : 2011
Guide for loading of oil immersed transformers
17.
 IS 8468 : 1977
Reviewed In : 2016
On-load Tap Changers


Annexure-II :List of Indian Product Standards

SI. No.
IS No. & Year
Title
1.
 IS 10161 : 1982
Reviewed In : 2021
Specification for moving coil voltage regulators
2.
 IS 1180 (Part 1) : 2014
Reviewed In : 2019
Outdoor Type Oil Immersed Distribution Transformers Upto and Including 2 500 kVA 33kV - Specification Part 1 Mineral Oil Immersed Fourth Revision
3.
 IS 1180 (Part 3) : 2021
Outdoor Indoor Type Liquid Immersed Distribution Transformers Up to and Including 2 500 kVA 33 kV Specification Part 3 Natural Synthetic Organic Ester Liquid Immersed
4.
 IS 12977 : 1990
Reviewed In : 2019
Arc furnace transformers specification
5.
 IS 13956 : 1994
Reviewed In : 2019
Testing transformers - Specification
6.
 IS 2026 (Part 1) : 2011
Reviewed In : 2021
Power transformers Part 1 general Second Revision
7.
 IS 2026 (Part 6) : 2017
IEC 60076-6 : 2007
Power transformers Part 6 reactors
8.
 IS 2026 (Part 11) : 2021
IEC 60076-11 : 2018
Power Transformers Part 11 Dry-Type Transformers
9.
 IS 2026 (Part 14) : 2018
IEC 60076-14 : 2013
Reviewed In : 2023
Power transformers Part 14 liquid - Immersed power transformers using high - Temperature insulation materials
10.
 IS 2026 (Part 15) : 2018
IEC 60076-15 : 2015
Reviewed In : 2023
Power transformers Part 15 gas - Filled power transformers
11.
 IS 2026 (Part 16) : 2023
60076-16 : 2018
Power transformers Part 16 transformers for wind turbine applications
12.
 IS 2026 (Part 21) : 2018
IEC 60076-21 : 2011
Power transformers Part 21 standard requirements terminology and test code for step - Voltage regulators
13.
 IS 3639 : 1966
Reviewed In : 2021
Specification for fittings and accessories for power transformers
14.
 IS 5142 : 1969
Reviewed In : 2021
Reaffirmed but not taken up for revision
Specification for continuously variable voltage auto - Transformers
15.
 IS/IEC 61558-1 : 2017
61558-1
Safety of Transformers Reactors Power Supply Units and Combinations Thereof Part 1 General Requirements and Tests First Revision
16.
 IS/IEC 61558-2-4) : 2021
61558-2-4
Safety of Transformers Reactors Power Supply Units and Combinations Thereof Part 2 Particular Requirements and Tests for Safety Isolating Transformers and Power Supply Units Incorporating Section 4 Isolating Transformers for General Applications
17.
 IS/IEC 61558-2-6) : 2021
61558-2-6
Safety of Transformers Reactors Power Supply Units and Combinations Thereof Part 2 Particular Requirements and Tests for Safety Isolating Transformers and Power Supply Units Incorporating Section 6 Safety Isolating Transformers for General Applications
18.
 IS 8447 : 1989
Reviewed In : 2018
Manually operated voltage regulators for domestic use - Specification First Revision
19.
 IS 8448 : 1989
Reviewed In : 2019
Automatic line voltage correctors Step Type for domestic use - Specification First Revision
20.
 IS 8468 (Part 1) : 2018
IEC 60214-1 : 2014
Tap - Changers Part 1 Performance Requirements and Test Methods First Revision
21.
 IS 9147 : 1979
Reviewed In : 2021
Specification for cable sealing boxes for oil - Immersed transformers suitable for paper - Insulated lead sheathed cables for highest system voltages from 12 kV up to and including 36 kV
22.
 IS 9815 (Part 1) : 1994
Reviewed In : 2019
Servo - Motor operated automatic line voltage correctors Part 1 correctors for single - Phase applications - Specification Second Revision