Programme of work

BUREAU OF INDIAN STANDARDS

Electrotechnical Department

Programme of Work

ETD34 : Instrument Transformers

Scope : To prepare standards and application guides for instrument transformers
Liaison :

IEC TC 38 - Instrument Transformers - Participating (P)

Published Standards

SI. No.	IS No.	Title	Reaffirmation Details	No. of Amendments	Degree of Equivalence
1.	IS 16227 (Part 1):2016 IEC 61869-1 : 2007	Instrument transformers: Part 1 general requirements		-	Identical under dual numbering
2.	IS 16227 (Part 2):2016 IEC 61869-2 : 2012 Reviewed In : 2025	Instrument transformers: Part 2 additional requirements for current transformers	February, 2025	-	Identical under dual numbering
3.	IS 16227 (Part 3):2015 iec61869-3 Reviewed In : 2025	Instrument transformers: Part 3 additional requirements for inductive voltage transformers	February, 2025	-	Identical under dual numbering
4.	IS 16227 (Part 4):2015 IEC 61869-4 : 2013 Reviewed In : 2025	Instrument transformers: Part 4 additional requirements for combined transformers	February, 2025	-	Identical under dual numbering
5.	IS 16227 (Part 5):2015 iec61869-5 Reviewed In : 2025	Instrument transformers: Part 5 additional requirements for capacitors voltage transformers	February, 2025	1	Identical under dual numbering
6.	IS 16227 (Part 6):2018 IEC 61869-6 : 2016 Reviewed In : 2023	Instrument transformers: Part 6 additional general requirements for low - Power instrument transformers	March, 2023	-	Identical under dual numbering
7.	IS 16227 (Part 9):2018 IEC 61869-9 : 2016 Reviewed In : 2023	Instrument transformers: Part 9 digital interface for instrument transformers	March, 2023	-	Identical under dual numbering
8.	IS 16227 (Part 100):2018 IEC 61869-100 : 2017 Reviewed In : 2025	Instrument transformers: Part 100 guidance for application of current transformers in power system protection	February, 2025	-	Identical under dual numbering
9.	IS 16227 (Part 102):2018 IEC/TR 61869-102 Reviewed In : 2025	Instrument transformers: Part 102 ferroresonance oscillations in substations with inductive voltage transformers	February, 2025	-	Identical under dual numbering
10.	IS 16227 (Part 103):2018 IEC/TR 61869-103 : 2012 Reviewed In : 2025	Instrument Transformers part 103 The use of instrument Transformers for power quality Measurement	February, 2025	-	Identical under dual numbering
11.	IS 16855 (Part 1):2018 IEC 62689 -1 : 2016 Reviewed In : 2025	Current and voltage sensors or detectors, to be used for fault passage indication purposes: Part 1 general principles and requirements	February, 2025	-	Identical under dual numbering
12.	IS 16855 (Part 2):2018 IEC 62689-2 : 2016 Reviewed In : 2025	Current and Voltage Sensors or Detectors to be used for Fault Passage Indication Purposes part 2 System Aspects	February, 2025	-	Identical under dual numbering
13.	IS 16855 (Part 100):2019 IEC 62689-100 : 2016 Reviewed In : 2025	Current and voltage sensors or detectors to be used for fault passage indication purposes: Part 100 requirements and proposals for the is/iec 61850 series data model extensions to support fault passage indicators applications	February, 2025	-	Identical under dual numbering
14.	IS 4146:1983 Reviewed In : 2024	Application guide for voltage transformers (First Revision)	December, 2024	-	Indigenous
15.	IS 4201:1983 Reviewed In : 2024	Application guide for current transformer (First Revision)	December, 2024	-	Indigenous
16.	IS 5547:1983 Reviewed In : 2016	Application guide for capacitor voltage transformers (First Revision)		-	Indigenous
17.	IS/IEC 60044-7:1999 Reviewed In : 2022	Instrument transformers: Part 7 electronic voltage transformers	December, 2022	-	Identical under single numbering
18.	IS/IEC 60044-8:2002 IEC 60044-8 : 2002	Instrument transformers: Part 8 electronic current transformers		-	Identical under single numbering
19.	IS 6949:1973 Reviewed In : 2016	Specification for summation current transformers		-	Indigenous

Standards Under Develpoment

Projects Approved

SI. No.	Doc No	TITLE
No Records Found

Preliminary Draft Standards

SI. No.	Doc No	TITLE
1	ETD 34 (27282)	Condition Monitoring of Instrument Transformers
2	ETD 34 (27283)	Installation and Maintenance of Instrument Transformers

Drafts Standards in WC Stage

SI. No.	Doc No	TITLE
No Records Found

Draft Standards Completed WC Stage

SI. No.	Doc No	TITLE
No Records Found

Finalized Draft Indian Standard

SI. No.	Doc No	TITLE
No Records Found

Finalized Draft Indian Standards under Print

SI. No.	Doc No	TITLE
No Records Found

Total Published Standards:19 Total Standards Under development : 2

Aspect Wise Report

Product:	11
Code of Practices :	5
Methods of Test :	0
Terminology :	0
Dimensions :	0
System Standard :	0
Safety Standard :	0
Others :	3
Service Specification :	0
Process Specification :	0
Unclassified :	0

Total :19

Annexure-I :List of Indian Standards Withdrawn/Superseded

SI. No.	IS No.	Title
1.	IS 11322:1985 Reviewed In : 2016	Method for partial discharge measurement in instrument transformers
2.	IS 2705 (Part 1):1992 Reviewed In : 2017	Current transformers - Specification Part 1 general requirements Second Revision
3.	IS 2705 (Part 2):1992 Reviewed In : 2017	Current transformers Part 2 Measuring current transformers
4.	IS 2705 (Part 3):1992 Reviewed In : 2012	Current transformers Part 3 Protective current transformers
5.	IS 2705 (Part 4):1992 Reviewed In : 2012	Current transformers Part 4 Protective current transformers for special purpose applications
6.	IS 3156 (Part 1):1992 Reviewed In : 2012	Voltage transformers Part 1 General requirements
7.	IS 3156 (Part 2):1992 Reviewed In : 2012	Voltage transformers Part 2 Measuring voltage transformers
8.	IS 3156 (Part 3):1992 Reviewed In : 2012	Voltage transformers Part 3 Protective voltage transformers
9.	IS 3156 (Part 4):1992 Reviewed In : 2012	Voltage transformers Part 4 Capacitor voltage transformers
10.	IS/IEC6004 :-1:2003 Reviewed In : 2012	Instrument Transformers Part 1 Current Transformers

Annexure-II :List of Indian Product Standards

SI. No.	IS No. & Year	Title
1.	IS 16227 (Part 1):2016 IEC 61869-1 : 2007	Instrument transformers Part 1 general requirements
2.	IS 16227 (Part 2):2016 IEC 61869-2 : 2012 Reviewed In : 2025	Instrument transformers Part 2 additional requirements for current transformers
3.	IS 16227 (Part 3):2015 iec61869-3 Reviewed In : 2025	Instrument transformers Part 3 additional requirements for inductive voltage transformers
4.	IS 16227 (Part 4):2015 IEC 61869-4 : 2013 Reviewed In : 2025	Instrument transformers Part 4 additional requirements for combined transformers
5.	IS 16227 (Part 5):2015 iec61869-5 Reviewed In : 2025	Instrument transformers Part 5 additional requirements for capacitors voltage transformers
6.	IS 16227 (Part 6):2018 IEC 61869-6 : 2016 Reviewed In : 2023	Instrument transformers Part 6 additional general requirements for low - Power instrument transformers
7.	IS 16227 (Part 9):2018 IEC 61869-9 : 2016 Reviewed In : 2023	Instrument transformers Part 9 digital interface for instrument transformers
8.	IS 16855 (Part 1):2018 IEC 62689 -1 : 2016 Reviewed In : 2025	Current and voltage sensors or detectors to be used for fault passage indication purposes Part 1 general principles and requirements
9.	IS/IEC 60044-7:1999 Reviewed In : 2022	Instrument transformers Part 7 electronic voltage transformers
10.	IS/IEC 60044-8:2002 IEC 60044-8 : 2002	Instrument transformers Part 8 electronic current transformers
11.	IS 6949:1973 Reviewed In : 2016	Specification for summation current transformers