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POWER & TELECOM CO-ORDINATION COMMITTE (PTCC)
Contents

Whats New!

95th PTCC Meeting -Agenda

Minutes of 94th central PTCC Meeting held>

New PTCC Manual released.To purchase copies pl Contact D.K Malik(Mobile-09811641653).

Addresses of Central PTCC Members.

      Important General information on PTCC

      Information about Power Telecom Co-Ordination Committees.

       Procedure for applying for PTCC clearence.

      Time limits for various activities involved in PTCC clearence.

I) Information about Power Telecom Co-Ordination Committees.

1.0 INTRODUCTION

Immediately after independence it was felt that with further progress in the development plans for Electric power and Telecommunication there would be a continuously increasing parallelism of Power and Telecom lines. Hence the importance of co-ordination between Power and Telecommunication was brought to forefront.
Engineers and it was taken up for discussion in the All India Power Engineer's Conference held in New Delhi in February, 1949. It was recognized that the subject involved considerable amount of specialized study and that the task of finding solutions to co-ordination problems that might arise from time to time as well as to evolve general co-ordination methods is better dealt with by a committee of Power and Telecommunication Engineers.

2.0 FORMATION OF THE PTCC

The all India Power Engineer's Conference held in Feb.1949 discussed the problems in considerable detail and recommended to the central Govt. for the formation of a Central Standing Committee for co-ordination of Power and Telecommunication systems. Accordingly vide Resolution No.EL11-151(7) dtd. at New Delhi, the 30th May 1949 from the Govt. of India, Ministry of works, mines and power, amended by corrigendum No. EL11-151(7) dtd. 29th Aug. 1949,formation of "PTCC" took place.

3.0.POWER & TELECOMMUNICATION CO-ORDINATION COMMITTEES(PTCC)

1.0 After its inception in 1949, all cases for PTCC clearance were being referred to the Central PTCC. The work at the Central level increased enormously due to the enormous spurt in both the Power and Communication sectors. The clearance of 11KV lines was entrusted to DEs(T) of the Telecom Department on the basis of guidelines prepared by the Central PTCC. It was necessary to further decentralize the work relating to lines upto 33KV. Accordingly, State Level Committees were set up in 1968 with representation from the Power and Telecom sides. A "Simplified Procedure"for issue of clearance in such cases was prepared by the Central PTCC.

2.0With the increasing complexities in matters connected with PTCC clearance and the problems posed by large financial outlays incurred in re-engineering of telecom lines. It was decided in 1977 to have an informal High Level Committee of the Members from the CEA and the then P&T Board to go into cases not settled by the PTCC.

3.0 In view of the increasing tempo of transmission line construction, it became difficult for the CEA to process all cases of lines beyond 66KV. As decided by the Conference of Chairman of State Electricity Boards in January 1978, the work relating to computation of induction from power lines of 66KV, 110KV and 132KV was decentralized w.e.f. June 1978. Officers nominated by SEBs specifically for the purpose started dealing with these cases in conjunction with the Regional DEs(T)PTCC. In Februrary 1979 the Central PTCC decided that State Level PTCCs would discuss all cases of lines upto 132KV.

4.0.VARIOUS COMMITTEES INVOLVED IN PTCC MATTERS are as follow:

(i) The informal High Level Committee comprised of the Member(G&O) of CEA and Member(TD) of Telecom Board meeting at intervals by mutual consent.

(ii) Central PTCC with nominees at present as indicated in para 6.1, meeting 2 times a year. The CE(LD&T), CEA/CGM T&D Circle, BSNL chair the meetings in alternate years.

(iii) State Level PTCCs with nominees at present as indicated in para 7.1 the SE from State Electricity Board and GM(Telecom) from BSNL chair the meetings in alternate years. Meetings are held generally every month but not later than a quarter. The Chairmanship is fixed by mutual consent.

5.0 HIGH LEVEL COMMITTEES

5.1Composition

In a few cases like upper limit of voltage for GD tubes, cost apportionment etc where no consensus could be arrived at, in the Central PTCC, such cases are discussed at the level of Secretary (Power) or chairman/Member, CEA assisted by other officers from the Ministry of Energy/CEA and Secretary (Communications) or Members from the Telecom Board assisted by other officers from the Telecom side. Officers of appropriate level from the Railways are also invited when there are issues involving them.

5.2 Central Standing Committee

In the high level meeting between representatives of Department of Telecom and Department of Power on re-engineering held on 4.5.1992 at New Delhi, it was decided that the Central Standing Committee should be revived so that it could look into such estimates which have resulted in delay in setting re-engineering cases. It will consist of two representatives from DOT and two from CEA. Director (ML), DOT will be the convenor of the committee.

6.0 CENTRAL PTCC

6.1 Composition

Revised composition of the Central Power & Telecommunication Co-ordination Committee (CPTCC)

1.Chief General Manager, Inspection Circle, Bharat Sanchar Nigam Ltd. (BSNL), Jabalpur- Current Chairman

2.Central Electricity Authority, New Delhi

3.Director (PTCC), CEA, New Delhi - Secretary (Power)

4.DGM, Inspection Circle, BSNL, Jabalpur - Secretary(Telecom)

5.Director(Telecom), Railway Board, New Delhi - Member

6.Director (ML), Ministry of Communication - Member

7.Chairman/Co-chairman of SLPTCC - Member

8.Director(GP) Ministry of Communications - Member

9.Representative from Army Headquarters. - Member

10.DDG(NE), TEC, BSNL, Hyderabad - Member

11.DET(PTCC),NR,SR,WR and ER, - Associate Member Inspection Circle, BSNL.

6.2 Functions of the Central Power & Telecommunication Co-ordination Committee (PTCC)

1.The Committee shall:

Study the existing rules and regulations issued on the subject by competent authorities and suggest what modifications, if any, are called for in the light of present day researches and developments and international practices.

(a) Initiate and undertake scientific and field studies associated with the problem of co-ordination.\Examine and study all individual co-ordination cases and recommend measures to be undertaken.

(b) consider all matters relating to the adverse effect of power lines on telecom lines.

(c) consider specific cases of route approval of power lines exceeding 33KV and telecom lines. Computations of induced voltages for lines over 33KV and upto 132KV are done by SEBs and for lines of 220KV and above by the CEA.

(d) consider and adopt new protective measures to minimize the cost of protection.

2. For carrying out the above functions, the Committee may seek the assistance of the Engineering branches of the Bharat Sanchar Nigam Ltd.(BSNL), the Engineering Departments of the Central and State Governments and other scientific organizations in India, such as the Indian Institute of Science, Bangalore and the Council of Scientific and Industrial Research, New Delhi in carrying out various field studies and experiments.

3. In order that field tests and investigations may be carried out by the various scientific bodies and the Bharat Sanchar Nigam Ltd. on behalf of the committee, it is recommended that the Central and State Governments whose co-ordination problems are to be considered should continue to provide in their annual budgets necessary lump sum grants for the purpose.

6.3 Frequency of CPTCC Meetings

Generally once in six months the meeting is to be convened. The arrangements and the Chaimanship will be rotated among CGM,T&D Circle,Jabalpur and CE(LD&T),CEA,New Delhi. in alternate years.

7.0 STATE LEVEL PTCC

7.1 Composition

In pursuance of the decision taken in 75th Central PTCC meeting held at Bangalore on 9th November, 2000 the membership of SLPTCC has been modified. The Ministry of Power have conveyed their approval vide letter No.3/1/2000-trans dt. 14th March, 2001 for the revision of the membership of the newly constituted SLPTCC as detailed below:

(i) GM(Telecom) of concerned Telecom Circle BSNL.Chariman for alternate yr.

(ii) Chief Engineer(Transmission) of concerned SEBs /State Power Transmission Corporation.

(iii) DGM(Telecom), who deals with PTCC matters of - Secretary (SLPTCC)- Telecom Circle, BSNL. Telecom Sector

(iv) SE/DGM, who deals with PTCC matter of State - Secretary (SLPTCC)- Power Utility. - Power sector

(v) EE of power utility/SDE(PTCC), T&D Circle BSNL.) - Co-ordination Secretary

(vi) Other members from POWER SECTOR.

   (a) Zonal SE/EE in-charge of PTCC.

   (b)Representative from any othe rCentral/State Power Trans. Corporation

   (c) Chief Electrical Inspector or his authorised representative from State.

(vii) Other members from BSNL organisation.

   (a) AGM(Plg) in-charge of PTCC, BSNL

   (b)DET(PTCC), BSNL of the concerned region.

   (c) Any other representative of BSNL as special invitee, as required.

   (d) DSTE of Zonal Railway.

   (e) Army representatives of the Area.

7.2 Functions of the State Level Power and Telecommunication Co-ordination Committees (SLPTCC)

(i) To review the progress of route approval cases of 11KV Lines dealt by Divisional Engineers, Telegraphs.

(ii) To consider route approval cases of power lines up to service voltages of 33KV and similarly telecom lines likely to be affected by them.

(iii) To consider the re-engineering schemes for cases where induction exceeds the protection limit for GD tubes.

(iv) To co-ordinate and watch the progress of installation of protective measures and re-engineering works and issue of energisation certificates on completion of protective works.

(v) To consider violation of PTCC regulations and take suitable corrective measures.

(vi) To discuss cases of power lines of 66KV and 110KV/132KV held up for PTCC clearance.

7.3 Frequency of SLPTCC meetings

The meeting is generally to be convened once in a month but not later than once in 3 months in any case and the Chairmanship is mostly by rotation between the SEB/BSNL representatives.

II) Procedure for applying for PTCC clearence.

SECTION A
POWER TRANSMISSION LINES (INCLUDING POWER CABLES)
1.0 IMPORTANT POINTS

1.1. Each power line is to be examined with respect to all the telecom lines inclusive of long distance cables, coaxial cables, railway circuits etc.

1.2. The cases of 11KV lines are processed and approved by the respective Divisional Engineer Telegraphs/Telephones. induced voltage calculations are done by the DEs Telegraphs/Telephones as the case may be.

1.3. The cases above 11KV and upto 33KV lines are processed by the SDE(PTCC) of T&D Circle whose office is located at the office of Chief General Manager Telecom. Induced Voltage calculations are made by the said SDE(PTCC).

1.4. Induced voltage calculations of lines of 33KV DC and above and upto 132KV are done by the nominated officers of the respective Electricity Boards . Induced voltage calculations above 132KV are done by the Central Electricity Authority. Cases are processed by the DET(PTCC) concerned. In case of DC lines, strung initially as single circuit, PTCC clearance is not required again in case the computations are done on Double Circuit basis initially itself. In such cases only the BSNL is to be informed.

1.5. The recommendations of the Railways are incorporated in respect of the railway block circuits in the Route Approval Certificate irrespective of the induced voltage.

1.6. Maximum safe limits of L.F. induction are 430 KV and 650KV from ordinary and high reliability power lines respectively as per CCITT. The Indian PTCC has adopted these limits for power lines up to 33KV and for 66KV and beyond respectively.

1.7. Single Wire Earth Return Telegraph Circuits affected will be converted as per the relevant decision of the PTCC.

1.8. The PTCC Route Approval itself is not a clearance for energization and separate clearance will have to be obtained from the railways/Telecom Authority maintaining the same.

2.0 POWER LINES EXCEEDING 132KV

2.1 In case of power lines of 220KV and above the application for clearance of the route is processed by the Central PTCC. The application for PTCC clearance is to be accompanied by the following documents.

(i) Questionnaire Number 1 as per proforma at Appendix 1, duly filled in with all relevant details.

(ii) A route map of the proposed power line (with terminal stations prominently marked) drawn to a scale of 1" = 1 mile or 1 cm = 0.5km. The route map should depict all topographical details including railway lines, rivers, canals and important roads and other landmarks like towns, villages with names etc on either side of the proposed power line upto 8kms.

(iii) Where there is close parallelism, the scale of the route map should be larger in order to compute the mutual coupling between the two lines accurately.

(iv) Statement showing the soil resistivity in the area covered by the line measured by the four electrode method with an inter-electrode spacing of 50metres, measurements being taken at every 2 or 3 kms along the length of the lines.

(v) Single-line diagram of the electrical layout of the relevant portion of the power system with details as in the Questionnaire.

(vi) In the case of tap or spur lines, distances of the tap point from either of the end substations should be clearly marked.

2.2 Copies of all the documents are to be sent to:

(i) Director (PTCC), PTCC Directorate, CEA, West Block-2, Wing No.1, Ground Floor, R.K. Puram, New Delhi-110066.

(ii) Concerned DET(PTCC) or BSNL as per the addresses given below (with two additional copies of route map).

For Northern Region (UP Rajasthan, Haryana, Punjab, HP, J&K, Delhi etc.) DET (PTCC), Northern Region, PTCC unit, B-1/10, Community Centre, Janakpuri, New Delhi -110058.

For Eastern Region (Orissa, Bihar, Assam, West Bengal and states in the NE region). DET(PTCC) Eastern Region, PTCC unit, 83/1A, Vivekananda Road, Seventh floor, Calcutta-700006.

For Western Region (Maharashtra, Gujrat, MP, Goa, Diu & Daman) DET(PTCC), Western Region, PTCC Unit, 6th floor, Anoop building, Reay Road, Mumbai-400010.

For Southern Region(Karnataka, Kerala, Tamilnadu, Andhra Pradesh) DET(PTCC), Southern Region, PTCC Unit,28(Old No 62),Annexe Building,Ground Floor,Jennis Road Saidapet,Chennai-600015.

2.3 Copies of route map are also to be sent to:

(i) The local DET of the Telecom department (two copies) with a request to mark the telecom lines involved and forward the same to the DET(PTCC) concerned; if more than one DE(T) is involved, additional copies to be sent to other DEs(T) concerned.

(ii) The SDE(PTCC), O/o CGM(Telecom) of the Circle concerned -One copy.

(iii) GM(S&T) of the Railways concerned (four copies) with a request to mark their telecom lines involved and forward one copy thereof to the Director(PTCC), CEA, New Delhi and one copy to the concerned DET(PTCC).

(iv) GM(Projects) and GM(Maintenance)-Two copies each.

(v) Army signals in case of border areas-Two copies.

2.4 The final PTCC clearance would be issued by the DET(PTCC) concerned after receipt of the induced voltage computations and Railways' recommendations.

2.5 The State Electricity Boards will keep a liaison with the BSNL/Railways to ensure that the protective measure are provided in time.

3.0 POWER LINES OF 33KV DC AND ABOVE UPTO 132KV DC

3.1 In these cases the application for clearance of the route is to be processed by the State Electricity Board concerned , which is to designate a suitable officer and the DET(PTCC) as per 2.2(ii) above. The application for PTCC clearance is to be accompanied by the documents mentioned in 2.1 above. The route map is to cover 8kms on either side of power line for 66KV and 5 Kms for 33KV lines.

3.2 Copies are to be sent to the officers as in 2.2 above except that instead of Director (PTCC), CEA, mentioned therein, the officer designate in the Electricity Board is to be contacted.

3.3 Copies of the route map are to be sent to the officers mentioned at 2.3 above.

3.4 The Final PTCC clearance would be issued by the DET(PTCC), concerned.

4.0 POWER LINES OF ABOVE 11KV UPTO 33KV S/C

Detailed instructions are available in the booklet 'Simplified Procedure for Co-ordination of Power lines upto and including 33KV with Telecom lines'. detailed in Chapter IV of the Manual. The route map to cover 5 kms on either side of power line for 33KV and 22KV. The route approval of all these cases is issued by the State Level PTCC.

5.0 POWER LINES OF 11KV

The clearance is to be obtained from the local DET of the Telecom Department as per procedure given in the 'Simplified Procedure' mentioned in 4.0 above. This does not cover SWER power lines, regarding which separate guidelines are issued. The route map to cover 3 kms on either side of power line for 11KV.

SECTION B
FOR THE USE OF BSNL/RAILWAY/DEFENCE OFFICERS

1.0 IMPORTANT POINTS

1.1 All telecom lines in the vicinity of the proposed power route would be marked distinctly to scale on the route map received from the power authorities. It is not enough to indicate a portion of the line only.

1.2 Not only the crossings but also the complete alignment of the telecom line, as actually in existence or planned, should be marked on the line route map to same scale. The stations, which the telecom line connects should be clearly indicated and the entire portion falling on the route map should be shown.

1.3 L-14 diagrams should accompany the route map. No abbreviations or code words should be used but full name of stations shown.

1.4 Along with the route map on which the telecom lines have been marked as indicated above, the details in full of the circuits working on the telecom alignments giving the discontinuity points and route lengths, should be furnished.

1.5 The DET should furnish the telecom details, L-14 index etc. through the respective SDE(PTCC) to the DET(PTCC) concerned.

NOTE: The telecom details should be supplied to:

(i) The DET(PTCC) concerned within 2 months of receipt of the route map and should be complete.

(ii) The information regarding telecom particulars should be given in the proforma complying with all the points in the check sheets.

1.6 After receipt of the route approval, the Telecom/Railway authorities concerned shall arrange for the necessary protection expeditiously and intimate compliance to the Member(P) and Member(Telecom) of State Level PTCC and the organization issuing the route approval. Member (Telecom) of concerned Telecom authority would then issue the energization approval for the power line. for computing the interference current on the earth return telegraph circuits, the following details are to be supplied in case of single wire earth return telegram circuits.

(i) Average height of telecom wire above ground in metres.

(ii) No. of line conductors excluding the telegraph wire under consideration which are not insulated from earth.

(iii) Whether phantom has been employed for the telegraph circuit.

(iv) Length of telegraph section and separation from power line.

(v) Details of telegraph apparatus including normal operating current and voltages.

SECTION C
TELECOM LINES FOR THE USE OF OFFICERS OF BSNL AND RAILWAY BOARD WHILE SUBMITTING THE APPLICATIONS FOR ROUTE APPROVAL IN CASE OF NEW TELECOM LINES.

1.0 IMPORTANT POINTS

1.1 The routes of all the Trunk lines, junction lines, Long distance PCO lines, Telegraph Circuits, Railway Circuits and Coaxial cables should be referred to PTCC for Route Approval.

1.2 Each circuit is to be studied for the effect of induced voltages from all the paralleling power lines, in the vicinity (for 11KV lines upto 3 kms, 3KV lines upto 5 kms and above 33KV lines up to 8 kms).

1.3 All power line crossings should be as per the PTCC code of practice.

1.4 PTCC Route Approval itself is not a clearance . Provision of all protections is a MUST for energization. The protective measures should be carried out during construction.

2.0 PROCEDURE

2.1 The application for PTCC clearance is to be made at the survey stage itself. As the effect of the induced voltage is to be calculated with respect to all the power transmission lines, running parallel to the proposed telecom/railway lines, the case should be submitted to the respective DET(PTCC) and others concerned, i.e. Executive Engineer of the concerned electricity Board and to the Director (PTCC),CEA, New Delhi. The approval will be issued by DET (PTCC) after the receipt of all induced voltage calculations.

2.2 The route of the proposed telecom line should be marked on a topographical map to the scale of 1"=1 mile or 1 cm =0.5 kms. The route map should show topographical details including all railway lines, rivers, canals and important roads and other landmarks like towns, villages, with names, etc. on either side of the proposed telecom line up to 8kms. The route of all the power lines also should be marked on the map.

(i) All Railway Stations falling on the map portion of the line should be physically located on the map and marked with names.

(ii) Care should always be taken to be as far away from the power lines as possible while fixing the telecom line route. Where, however, there is a close parallelism in certain sections, the scales of the route map should be larger than 1"=1 mile in order to compute the mutual impedence between the two lines accurately for that particular section.

2.3 The application for PTCC approval is to be accompanied by the following documents.

(i) A Questionnaire No. 2 as per proforma at Appendix II, duly filled in with all relevant details.

(ii) Statements showing the soil resistivity in the area covered by the line measured by four electrode method with an inter electrode spacing of 50 metres, measurements being made at every 2 or 3 kms along the length of the line.

(iii) The L-14 diagram of the proposed telecom alignment.

(iv) The details of the circuits likely to work on the telecom lines (use of codes and abbreviations should not be made).

(v) The no. of crossings and the angle of crossings with power lines with location details.

2.4 Copies of all the documents as above (plus four additional copies of the route map) to Member (Power), State Level PTCC for marking the power details. The later will get the power lines marked and send to SDE(PTCC) for lines of 33KV S/C and below and to Director (PTCC) CEA, New Delhi, for lines of 220KV and above. For the power lines of other voltages, the computations are done by the SEB. The results in all cases are sent to the DET(PTCC) concerned for necessary action to examine and issue the PTCC Route Approval.

APPENDIX 1
(Refer Para 2.1(i) of Section A)
QUESTIONNAIRE 1

Government of India Power & Telecommunication Co-ordination Committee

(To be Answered by the Authorities in-charge of Power Systems while Applying for Route Approvals)

1.0 Please supply date of the power system as per details below:

1.1 Key diagram (single line) of the electrical layout of the relevant portions of the power system, indicating the no., voltage ratings, capacities, etc. of the various power apparatus. indicate also by dotted lines the extension proposed ultimately or through the current Five Year Plan.

NOTE: By relevant is meant all the power stations which under normal operating conditions, will feed into a fault occurring within or outside the parallelism section as well as all lines on which such fault current would flow.

1.2 Data on the characteristics of equipment, viz. generators, transformers, reactors, synchronous condensers, earthing transformers, etc. installed in the system as per enclosed annexure (transient reactance figures should be given for all rotating machines).

1.3 Please state if the neutral points, of the power system are
(i) insulated, or (ii) earthed. If the latter, please indicate the type of earthing, e.g. solidly earthed, earthed through Peterson coils, earthed through resistance or reactance. Give also full particulars.

2.0 Please supply the following data in respect of the particular power line for which approval is sought.

2.1 Name

2.2 Operating voltage and no. of circuits.

2.3
i)
Length

ii)Conductor/Earthwire size and material.

2.4 If it is a tap or spur line, the length of the tap and the distance of the tapping point from the end sub-stations should be clearly indicated.

2.5 Is the power line bussed at any intermediate sub-stations? If so, please give details.

2.6 Will the power line initially be charged at some lower voltage?

2.7 Probable date of commencing the construction

2.8 Probable date of commissioning.

2.9 Date by which approval is desired.

3.0 Please supply a route map showing the proposed alignment of the power line and the paralleling telecommunication lines in the area, drawn to a scale of 1 cm = 0.5kms or 1" = 1 mile. All topographical details including all railway lines, rivers, canals and important roads upto 8 kms on either side of the proposed power line may also be drawn to the scale. The railway stations should be located on the map and named.

NOTE:

1) If the proposed line is an extension of the existing line, which had not been referred to the committee previously a similar route map of the existing line should also be supplied along with the route map of the proposed line.

2) A copy of the route map with telecom circuits marked be also sent to local BSNL authorities and Railway authorities, requesting them to confirm the telecom circuit and also indicate the points of discontinuity in the telecom circuits to both the Joint Secretaries of the committee.

3.1 Number and date of the route map showing the proposed alignment.

4.0 Sketch or sketches or supports showing the conductor and group wire arrangements of the transmission line together with an indication of the sizes and materials of the various wires.

5.0 Please indicate the protective device adopted for the line. In respect of lines protected by circuit breakers, please furnish also the type of the lines and relaying proposed and the total time (Breaker and Relay) for clearance of ground faults on the line with normal relay settings.

6.0 Please indicate the soil resistivity in the area covered by the line . The soil resistivity should be measured by the four electrode method using an interelectrode spacing of 50 metres (150 feet). The measurements may be made at every 2 or 3 kms along the length of the line.

7.0 Please indicate the number of crossings between the proposed alignment and the telecommunication lines involved and state if the crossing arrangements will be provided in accordance with the code of Practice for Crossings issued by the Power and Telecommunication Co-ordination Committee.

8.0 While applying for route approvals of the Committee, the above particulars should be furnished to:

9.0 Director (PTCC), Central Electricity Authority, PTCC Directorate, West Block-2, Wing No.1, Ground floor, R.K. Puram, New Delhi-110066.

i) DET(PTCC) concerned.

Place:                                              Signature:
Date:                                                    Name:
                                                    Designation:

N.B.: For computing the interference current from the power line on the single-wire earth return telegraph circuits, indicate the maximum load current for which the power line has been designed.

ANNEXURE TO APPENDIX 1

Please furnish the characteristics of the various power apparatus as under:

1.SYNCHRONOUS MACHINES (GENERATORS, SYNCHRONOUS CONDENSERS)

S. No. Name of the power station or sub-station Rating KVA Transient Reactance (Percentage Reactance on its own base)
1
2
3
2.TRANSFORMERS

S.No NAME OF POWER STATION OR SUBSTATION HIGH VOLTAGE WINDING MEDIUM VOLTAGE WINDING LOW OR TERTIARY WINDING PERCENTAGE REACTANCE
1
2
3
4

1) In the case of star connections, please state clearly whether the neutral is effectively grounded.

2) In the case of windings connected delta, please indicate whether it would be operated with isolated neutral or grounded through earthing transformers.

**3) The MVA base to which these values relate should be clearly specified.

3.REACTORS

S. No. Name of the power station or sub-station Rating KVA Percentage Reactance (Percentage Reactance on its own base)
1
2
3

4.EARTHING TRANSFORMERS

S.No Name of Power Station or Substation Current Rating (Short time) Voltage Time Rating Percentage Reactance (On Short time rating)
1
2
3
4

APPENDIX II (Refer Para 2.3(i) of Section C)
QUESTIONNAIRE 2

GOVERNMENT OF INDIA POWER & TELECOMMUNICATION CO-ORDINATION COMMITTEE
(To be Answered by the Authorities in-charge of Telecommunication Line while Applying for Route Approvals)

Section a(1)

1.0 Please supply the following data in respect of the particular telecom line for which approval is sought :

1.01 Name

1.02 Route Length

1.03 Probable date of commencing the construction.

1.04 Probable date of commissioning

1.05 Date by which approval is desired.

1.06 Please supply a route map showing the proposed route of the telecom line and also the existing/proposed power lines in the area drawn to a scale 1"=1 mile or 1 cm=0.5 kms. Topographical details including railway lines, rivers, canals and important roads upto 8 kms on either side of the proposed telecom line should also be drawn on the map.

1.07 Number and date of the route map.

1.08 Sketch or sketches of L-14 diagram of the proposed alignment.

1.09 Details of the circuits likely to work on the proposed line with discontinuity points and route lengths.

1.10 Please indicate the soil resistivity in the area covered by the proposed line. The soil resistivity should be measured by the four electrode method using an inter electrode spacing of 50 metres. The measurements may be made at every 2 or 3 kms along the length of the line.

1.11 Please indicate the number of crossings and angle of crossings between the proposed telecom alignment and the power lines and give a certificate that the crossing arrangement will be made in accordance with the Code of Practice for Crossings issued by PTCC.

1.12 Additional information as per Para 1.6, item i) to v) of Section B, for telegraph circuits.

Date:                                                 Signature and Designation of Telecom/
Place:                                                 Railway Authority
(To be Furnished by the SEB)



Section a(2)

2.0 Please supply the following data in respect of the power lines existing or proposed on either side of proposed telecom line (upto 8 kms for 66KV and 5 kms for lines above 11KV and upto 33KV and 3 kms for lines upto 11KV).

2.1 Name of the power line/lines.

2.2 Operating voltage and number of circuits of power line/lines.

2.3 Length of power line/lines.

2.4 Whether the route of power line/lines has/have been approved by PTCC? If yes, please indicate approval certificate number and date.

2.5 The designation and address of the officer in charge of the power line/lines.

Date:                                                Signature and Designation of Officer of
Place:                                                SEB/Department


Section b(1)
(Applicable to Coaxial cables)
1.01 Name of the coaxial cable route.

1.02 Route length

1.03
a) Number of coaxial tubes

b) Size of the coaxial tubes.

c) Maximum frequency used on the coaxial conductors.

d) Details of interstice pairs.

e) The characteristic curve of screening factor for the proposed coaxial cable.

1.04 Probable date of commencing the construction.

1.05 Probable date of commissioning.

1.06 Date by which approval is desired.

1.07 Please supply the route map showing the proposed route of the coaxial cable to enable the Power authorities to mark the existing/proposed power lines in the area, drawn to the scale of 1" = 1 mile or 1cm = 0.5 kms. Topographical details including railway lines, rivers, canals and important roads upto 8kms on either side of the proposed coaxial cable route should also be drawn up on the map.

1.08 Number and date of the route map.

1.09 Please indicate the soil resistivity of the area covered by the proposed coaxial cable route. Soil resistivity should be measured by the four electrode method using the inter electrode spacing of 50 metres. The measurement may be made at every 2 or 3 kms along the length of the route. 1.10 Please indicate the screening factor characteristics for the coaxial cable.

Date:                                                Signature and Designation of Telecom/
Place:                                                Railway Authority

(To be Furnished by the SEB)

Section b(2)

2.0 Please supply the following data of the power lines existing or proposed on either side of the proposed coaxial cable route (upto 8 kms for 66KV and above, 5kms for lines above 11KV and upto 33KV and 3 kms for lines upto 11KV).

2.1 Name of the power line/lines.

2.2 Operating voltage and number of circuits of power line/lines.

2.3 Length of the power line/lines.

2.4 Whether the route of power line/lines has been approved for the PTCC. If yes, please indicate the approval certificate number and date.


Date:                                                 Signature and Designation of Officer of
Place:                                                SEB/Department

III) Time limits for various activities involved in PTCC clearence.

Reference: Para 3, 13 of the minutes of the central PTCC meeting NO. 4/81-82/Ranchi dated 31.3.1982 circulated vide TD/LP-2015 dated 8.4.1982.

The Central Power and Telecommunication Co-ordination Committee meeting held at Ranchi on 24.2.1982 has approved for adoption the Recommendation No.PTCC/BY/SUB-COMMITTEE/MISC. dated 23.11.1981 of the sub-committee in respect of Time Limits to be observed by different agencies for completion of various steps involved in the clearance of cases referred to PTCC.These recommendations are given in the Annexure.

ANNEXURE -'TIME LIMITS'

A. FOR OBTAINING PTCC ROUTE APPROVAL

i)For approval of 11KV lines-Approval by the respective DEs(Telecom).

      a) 8 weeks if the power line proposal pertains to single case.

      b) 12 weeks if the cases are referred in group.

ii)For 22KV/33KV Power Lines-Approval by the State Level.

      a) Furnishing the telecom details by P&T/Railway/Army etc - 10weeks

      b) Examining cases and computing the induced Voltage(I.V.) calculations and forwarding the same to Railways, if required.-3 weeks

      c) Forwarding recommendations by Railways. - 4 weeks

       d) Final examination and issue of certificate - 3 weeks

iii) For 33KV DC and above upto 132KV Power Lines(Central Cases)

       a)Furnishing telecom details by P&T/Railway/Army - 12 weeks

       b)Scrutinising the details, preparing copies & forwarding to concerned Electricity Board by DET PTCC.- 2 weeks

       c)Furnishing I>V> calculations by Electricity Board & endorsing copies to all concerned. - 10 weeks

       d)Furnishing recommendations by Railway/Army - 4 weeks

       e)Final examination & issue of certificate - 4 weeks

iv) For Approval of Power Lines above 132KV (Central cases)

       a)For furnishing telecom details byP&T/Railway/Army - 12 weeks

       b)Scrutinising the details, preparing additional copies and forwarding to Joint Secretary Power - 2 weeks

       c)Furnishing induced voltages calculation by Jt. Secretary Power & endorsing copies to all concerned) - 10 weeks

       d)Furnishing recommendations by Railway/Army - 4 weeks

       e)Final examination and issue of certificate. - 4 weeks

v)For approval of cases from P&T/Railway/Army for the Construction of Telecom Lines, Lalying Coaxial cables etc.

       a) For marking and frunishing power line details of various categories of power lines separately to the AE(PTCC) (upto 33KV) to the concerned Electricity Board authority (for cases of 33KV DC and above upto 132KV)and to the Joint secretary (Power) CEA (for cases above 132KV) -12 weeks

      b) Computing induced voltage calculations by AE(PTCC) /ElectricityBoard/Jt.Secretary(P) - 10 weeks

       c) Furnishing recommendations by Railways/Army - 4 weeks

       d) Final examination and issue of certificate - 4 weeks

B.FOR PROTECTIVE WORKS AFTER THE PTCC APPROVAL

       a) For quoting the charges and funishing estimate - 8 weeks

       b) Arrangement for payment - 8 weeks

       c) Execution of protective works by P&T - 10 weeks

       d) Execution of protective works by Rlys - 10 weeks

NOTES:

i) In general, the time schedule recommended for the various functions shall not apply to cases where re-engineering is involved. Even for such cases the appropriate authorities may quote the reasonable time required for the re-engineering.

ii) The period for implementing the protective works has been recommended assuming the essential materials for those works would be available in reasonable time.

iii) If the protective works are to be undertaken by the Department or Agencies other than the unit submitting the proposal, every attempt should be made for speedy completion of the protective works. However, energization shall not take place if the protections are not completed.

iv) The time prescribed may be taken as maximum.

C. FOR WATCH AND MONITORING

Cases below 33KV - necessary monitoring and watching would be done by the respective State Level PTCC committees.

The standing sub-committee will examine badly delayed cases of 33KV DC and above.

Information pertaining to such cases would be called for in the prescribed form from the various DesT(PTCC) for review by the Sub-committee.


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