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

Transcription

1 DRAFT IN WIDE CIRCULATION DOCUMENT DESPATCH ADVICE Reference Date ET 35 (T-70) To (T-72) TECHNICAL COMMITTEE ETD ADDRESSED TO: 1. All Members of Power Systems Relays Sectional Committee, ET 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: Sl Doc No. No. 1 Doc ET 35 (6885) 2 Doc ET 35 (6886) 3 Doc ET 35 (6887) Title Electromechanical elementary relays Part 2: Reliability [IEC :2011] Electromechanical elementary relays Part 2-1: Reliability Procedure for the verification of B10 values [ IEC :2011] Electromechanical elementary relays Part 7:Test and measurement procedures [ IEC :2006] Kindly examine the draft standard and forward your views stating any difficulties which you are likely to experience in your business or profession, if this is finally adopted as Indian Standard. Comments, if any, may please be made in the format given overleaf and mailed to the undersigned. In case no comments are received or comments received are of editorial nature, you will kindly permit us to presume your approval for the above document as finalized. However, in case of comments of technical in nature are received then it may be finalized either in consultation with the Chairman, Sectional Committee or referred to the Sectional Committee for further necessary action, if so desired by the Chairman, Sectional Committee. Last date for comments:

2 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, (D.Goswami) Sc F & Head (Electrotechnical) eetd@bis.org.in Encl: As above

3 य प च ल म स द रल ख र षण स ञ पन स दभष ददन क तकन क सम तत ई ट ३५ ईट ३५/ ट - ७० स ट - ७२ र षत : 1. ईट ३५ क सभ सद य 2. व य त तकन क व भ ग पर षद क सभ सद य त 3. च खन ल अ य सभ तनक य ह दय, क य तन नमल खखत स द स ल न ह : रल ख ईट ३५ श षषक व य त य र क त य र ल - भ ग २: व सन यत [ IEC :2011] (६८८५) ईट ३५ (६८८६) ईट ३५ (६८८७) व य त य र क त य र ल - भ ग २-1 : व सन यत -B10 न क स य पन क रर य [ IEC :2011] व य त य र क त य र ल - भ ग ७: प षण ए पन रर य ए स दभष [ IEC :2006]

4 क य न स द क अ ल कन क औ अपन स ततय यह तत त ह ए भ रक अ तत: यदद यह नक क प रक मशत ह ए त न प अ ल क न आपक य स य अ क त य कद न य आ सकत ह स ततय भ न क अ तत त ख : स ततय यदद क ई ह त क य अगल प प ददए प अ ह त ष क रपर मलखखत पत प भ द यदद क ई स तत र त नह ह त अ स तत क ल भ ष स त दट ह ई त रप त रल ख क य त अतत प ददय एग यदद क ई स तत तकन क रक तत क ह ई त व षय सम तत क अ यष क प शष स अ रनक प आग क क यष ह क मलए व षय सम तत क भ न क त द रल ख क अतत प द ददय एग य द, भ द य, (ड.ग ) ञ तनक एफ ए र ख (व य त तकन क ) स ल न : रपर मलखखत

5 Date Document No ET 35 (6885) to (6887) Sl. No. Name of the Organization Clause/ Subclause Paragraph/ Figure/Table Type of Comment (General/ Technical/ Editorial Comments Proposed Change

6 Doc: ET 35(6885) 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 ELECTROMECHANICAL ELEMENTARY RELAYS PART 2: RELIABILITY Last date for receipt of comments is : Power System Relays Sectional Committee, ETD 35 NATIONAL FOREWORD This Indian Standard (Part 2) which is identical with IEC :2011 Electromechanical elementary relays Part 2: Reliability issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the Power System Relays 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 provision of the following International Standard referred in this adopted standard and has decided that it is acceptable for use in conjunction with this standard: International Standard Title IEC :1990 International Electrotechnical Vocabulary (IEV) Chapter 191: Dependability and quality of service IEC :2002 International Electrotechnical Vocabulary (IEV) Part 444: Elementary relays

7 IEC :2001 Dependability management Part 3-5: Application guide Reliability test conditions and statistical test principles IEC 61649:2008 Weibull analysis IEC :2008 Electromechanical elementary relays Part 1: General requirements Only the English language text of the International Standard has been retained while adopting it as an Indian Standard and as such the page numbers given here are not the same as in the 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

8 Doc: ET 35(6886) 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 ELECTROMECHANICAL ELEMENTARY RELAYS PART 2-1: RELIABILITY PROCEDURE FOR THE VERIFICATION OF B10 VALUES Last date for receipt of comments is : Power System Relays Sectional Committee, ETD 35 NATIONAL FOREWORD This Indian Standard (Part 2/Sec 1) which is identical with IEC :2011 Electromechanical elementary relays Part 2-1: Reliability Procedure for the verification of B 10 values issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the Power System Relays 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 provision of the following International Standard referred in this adopted standard and has decided that it is acceptable for use in conjunction with this standard: International Standard Title IEC :2008 IEC :2011 Electromechanical elementary relays Part 1: General requirements Electromechanical elementary relays Part 2: Reliability

9 IEC 62061:2005 Safety of machinery Functional safety of safety-related electrical, electronic and programmable electronic control systems ISO :2006 Safety of machinery Safety-related parts of control systems Part 1: General principles for design Only the English language text of the International Standard has been retained while adopting it as an Indian Standard and as such the page numbers given here are not the same as in the 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

10 Doc: ET 35(6887) 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 ELECTROMECHANICAL ELEMENTARY RELAYS PART 7:TEST AND MEASUREMENT PROCEDURES Last date for receipt of comments is : Power System Relays Sectional Committee, ETD 35 NATIONAL FOREWORD This Indian Standard (Part 7) which is identical with IEC :2006 Electromechanical elementary relays Part 7:Test and measurement procedures issued by the International Electrotechnical Commission (IEC) is proposed to be adopted by the Bureau of Indian Standards on the recommendation of the Power System Relays 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 provision of the following International Standard referred in this adopted standard and has decided that it is acceptable for use in conjunction with this standard: International Standard IEC :1990 Amendment 1 (1993) Amendment 2 (1994) Title Environmental testing Part 2: Tests Tests A: Cold

11 IEC :1974 Amendment 1 (1993) Amendment 2 (1994) IEC :1995 IEC :1983 Amendment 1 (1986) IEC :2005 IEC :1981 IEC :1983 IEC :1984 Amendment 1 (1986) IEC :1994 IEC :1979 Amendment 2 (1987) IEC :1999 IEC :1987 IEC :1987 IEC :2005 IEC :2003 IEC :2003 Environmental testing Part 2: Tests Tests B: Dry heat Environmental testing Part 2: Tests Test Fc: Vibration (sinusoidal) Environmental testing Part 2: Tests Test Ga: Acceleration, steady state Environmental testing Part 2: Tests Test J and guidance: Mould growth Environmental testing Part 2: Tests Test Ka: Salt mist Environmental testing Part 2: Tests Test M: Low air pressure Environmental testing Part 2: Tests Test N: Change of temperature Environmental testing Part 2: Tests Test Q: Sealing Environmental testing Part 2: Tests Test T: Soldering Environmental testing Part 2-21: Tests Test U: Robustness of terminations and integral mounting devices Environmental testing Part 2: Tests Test Ea and guidance: Shock Environmental testing Part 2: Tests Test Eb and guidance: Bump Environmental testing Part 2: Tests Test Db: Damp heat, cyclic ( hour cycle Environmental testing Part 2-42: Tests Test Kc: Sulphur dioxide test for contacts and connections Environmental testing Part 2-43: Tests Test Kd: Hydrogen sulphide test for contacts and connections

12 IEC :1980 IEC :2004 IEC :1993 IEC :1994 IEC :2001 IEC : 1993 IEC (all parts) IEC :2000 IEC :2000 IEC :2000 IEC :2000 IEC :2004 IEC :1999 Environmental testing Part 2: Tests Test XA and guidance: Immersion in cleaning solvents Environmental testing Part 2-58: Tests Test Td Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD) Environmental testing Part 2: Test methods Test Fh: Vibration, broad-band random (digital control) and guidance Environmental testing Part 2: Tests Test L: Dust and sand Environmental testing Part 2-78: Tests Test Cab: Damp heat, steady state Electromechanical components for electronic equipment; basic testing procedures and measuring methods Part 7: Mechanical operating tests and sealing tests Fire hazard testing Part 2: Test methods Fire hazard testing Part 2-10: Glowing/hot wire based test methods Glow-wire apparatus and common test procedure Fire hazard testing Part 2-11: Glowing/hot wire based test methods Glow-wire flammability test method for end-products Fire hazard testing Part 2-12: Glowing/hot wire based test methods Glow-wire flammability test method for materials Fire hazard testing Part 2-13: Glowing/hot wire based test methods Glow-wire ignitability test method for materials Fire hazard testing Part 11-5: Test flames Needle-flame test method Apparatus, confirmatory test arrangement and guidance Connecting devices Electrical copper conductors Safety requirements for screw-type and screwless-type clamping units Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm2 up to 35 mm2 (included) IEC 61210:1993 Connecting devices Flat quick-connect terminations for electric copper conductors Safety requirements

13 IEC :1992 High-voltage test techniques for low-voltage equipment Part 1: Definitions, test and procedure requirement IEC :1994 High-voltage test techniques for low-voltage equipment Part 2: Test Equipment IEC :2002 IEC :2004 IECQ QC :2000 Electroacoustics Sound level meters Part 1: Specifications Electromechanical elementary relays Part 1: General and safety requirements IEC Quality Assessment System for Electronic Components (IECQ) Basic Rules 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