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Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to

information for citizens to secure access to information under the control of public authorities,in order to promote transparency and accountability in the working of every public authority,

and whereas the attached publication of the Bureau of Indian Standards is of particular interest

to the public, particularly disadvantaged communities and those engaged in the pursuit of

education and knowledge, the attached public safety standard is made available to promote the

timely dissemination of this information in an accurate manner to the public.

!"#$% '(%)

!"# $ %& #' (")* &" +#,-.Satyanarayan Gangaram Pitroda

Invent a New India Using Knowledge

/0)"1 &2 324 #' 5 *)6Jawaharlal Nehru

Step Out From the Old to the New

7"#1&"8+9&"), 7:1&"8+9&")Mazdoor Kisan Shakti Sangathan

The Right to Information, The Right to Live

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IS 5553 Part 1 ) : 1989Indian Standard

REACTORS - SPECIFICATIONPART 1 GENERAL

Fivst RevisionFirst Reprint APRIL 1996UDC 62131843

Jurle 1990

Q BIS 1990BURE U OF INDI N ST ND RDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002Price Group 1

( Reaffirmed 2003 )

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Transformers Sectional Committee, ETD 16

FOREWORDThis Indian Standard First Revision ) was adopted by the Bureau of Indian Standards on22 December 1989, after the draft finalized by the Transformers Sectional Committee had beenapproved by the Electrotechnical Division Council.This standard was first published in 1970. This revision has been done with a view to bring it in linewith the IEC Pub 289-1988 Reactors.In this revision the requirements for reactors have been covered in eight parts as follows:

Part 1Part 2Part 3Part 4Part 5Part 6Part 7Part 8

GeneralShunt reactorsCurrent limiting and neutral earthing reactorsDamping reactorsTuning reactorEarthing transformers Neutral couplers )Arc suppression reactorsSmoothing reactors.

This standard Part 1 ) has been based on IEC Pub 289-1989 Reactors Section 1 : Generalissued by the International Electrotechnical Commission.In this standard, reference have also been made to IS 2026 Parts I to 4 ).

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IS 5553 Part 1) : 1989Indian Standard

REACTORS SPECIFICATIONPART 1 GENERAL

Fi rst Revi si on1 SCOPE 3.1 Types of Reactor1.1 This standard applies to the following typesof reactors:

a) Shunt reactors,3.1.1 Shunt Reactor

b) Current-limiting reactors and neutral-earthing reactors,c) Damping reactors,d) Tuning reactors,e) Neutral couplers,f) Arc-suppression reactors, andg) Smoothing reactors.

Reactor intended for shunt connection in a systemto compensate capacitive current.3.1.2 Current Li mit ing ReactorReactor intended for series connection in a systemfor limiting the current under system faultconditions.

With the exception of the follwing reactors:a) Single-phase reactors rated at less than

1 kvar and three-phase reactors rated atless than 5 kvar, andb) Special reactors.

3.1.3 Neutral Earthing ReactorSingle-phase reactor for connection between theneutral of a system and earth for limiting theline-to-earth current under system earth faultconditions.3.1.4 Damping Reactor

1.1.1 Where Indian Standards do not exist forsuch small or special reactors, this standard maybe applicable in whole or in part.

Reactor intended for series connection withcapacitors for limiting the inrush current duringswitching.

2 REFERENCES2.1 The following Indian Standards are necessaryadjuncts to this standard.

3.1.5 Tuning or Fil ter R eactorReactor intended for series or parallel connectionfor instance with capacitors for reducing orblocking harmonics and/or communicationfrequencies reactors line-traps ).

IS x0IS 2026

Part 1) : 1977Part 2 ) : 1977Part 3): 1981Part 4) : 1977

IS 6600 : 1972LS 10593 : 1983

IS 11171 : 1985

TitlePower transformersGeneral f ir st revision )Temperature-riseInsulation level and dielectrictests second revi sion)Terminal marking tappingsand connections f irst revision )Guide for loading of oilimmersed transformersMethod of evaluating theanalysis of gases in oil-filledelectrical equipment in serviceDry type power transformers

3 TERMINOLOGY3.0 For the purpose of this standard the followiugdefinitions shall apply.

3.1.6 Earthi ng Transformer Neutral Coupler )Three-phase transformer or reactor intended forparallel connection in a system to provide aneutral.

NOTE - Earthing transformers may in additionsupply a local auxiliary network.3.1.7 Arc-suppression ReactorSingle-phase reactor intended for connection bet-ween the neutral of a system and earth for com-pensating lhe capacitive line-to-earth current dueto a single-phase earth-fault.3.1.8 Smoot hing ReactorReactor intended to reduce the flow of harmoniccurrents and transient current in dc systems.4 SERVICE CONDITIONS4.1 Normal Setvice ConditionsThis standard gives detailed requirements forreactors for use under the following conditions.

1

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IS 5553 Part 1) : 19894.1.1AltitudeA height above sea-level not exceeding 1000 m.

NOTE For greater altitudes, see 4.2.4.1.2Reference Ambient TemperaturesThe reference ambient temperatures assumed forthe purpose of this specification shall be asfollows:

a) Maximum ambient air temperature 50Cb) Maximum daily average ambient airtemperature 40C

Maximum yearly weighted averageambient temperature 32CMinimum ambient air temperature -5CWaterWhen the cooling medium is water, it isassumed that a temperature of 30C willnot be exceeded and that the averagecooling water temperature will not exceed25C on any day.

4.1.3Reactors complying with this specificationare suitable for operation continuously, at theirratings provided the temperature of the coolingair or water does not exceed any of the referenceambient temperature specified under 4.1.2.It is also recognized that operation of a reactor atits rated kVA provides normal life expectancy, ifthe hot spot temperature based on maximum

yearly weighted average ambient temperature is98C.4.1.4 The temperature-rises of the windings,cores/magnetic shield and oil of reactors designedfor operation at altitudes not exceeding thosegiven in 4.1.1 and with cooling medium temper-atures as described in 4.1.2 shall not exceed thelimits specified in Tables 3 and 4 of IS 2026Part 2 ) : 1977 for high ambient temperaturessee 4.2 ).4.2 Provision for Unusual Service ConditionsThe purchaser shall specify in his enquiry anyconditions not covered by the normal service con-ditions specified in 4.1.Supplementary requirements, within definedlimits, for the rating and testing of reactorsdesigned for other than the normal service con-ditions listed in 4.1, are given below:

-for air-cooled reactors of the dry and oil-immersed types for operation outside thenormal temperature limits of cooling air,in 4.2 of IS 2026 Part 2 ) : 1977.

-for all types of reactors for operation ataltitudes in excess of 1000 m above sea-level the provision of 4.2 and 4.3 of IS 2026Part 2 ) : 1977 shall apply.Temperature conditions outside the limits coveredby the supplementary requirements and specintoperating conditions, for example, restrictedcooling air circulation, are subject to agreementbetween the manufacturer and the purchaser.

2

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Bureau of Indian StandardsBIS is a statutory institution established under the Bureau ofhdi cln St andm-ds Act , I 986 to promoteharmonious development of the activities of standardization, marking and quality certification of goodsand attending to connected matters in the country.CopyrightBIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director Publications), BIS.Review of Indian Standards

mendments are issued to standards as the need arises on the basis of comments. Standards are alsoreviewed periodically; a standard along with amendments is reaffirmed when such review indicates thatno changes are needed; if the review indicates that changes are needed, it is taken up for revision. Usersof Indian Standards should ascertain that they are in possession of the latest amendments or edition byreferring to the latest issue of BIS Handbook and Standards Monthly Additions.This Indian Standard has been developed from Dot : No ETD 16 2761 )

mendments Issued Since PublicationAmend No. Date of Issue Text Affected

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