section- project_combined s1 pkg in sr

7/21/2019 Section- Project_Combined S1 Pkg in SR

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POWER GRID CORPORATION OF INDIA

(A Government of India Enterprise)

TECHNICAL SPECIFICATIONFOR

SUBSTATION PACKAGE-S1ASSOCIATED WITH

(i) Common Transmission System associated with Generation Projectsin Nagapattinam/ Cuddalore Area, Tamil Nadu

(ii) Transmission System required for evacuation of power from KudgiTPS of NTPC Ltd

(iii) System Strengthening in SR for import of power from ER and(iv) Transmission System for connectivity for NCC Power Projects Ltd

IN SOUTHERN REGION

VOLUME II

SPECIFICATION NO.:

(This document is meant for the exclusive purpose of bidding against thisspecification and shall not be transferred, reproduced or otherwise used forpurposes other than that for which it is specially issued.)

Document No. DC


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INDEX

CLAUSE NO. PARTICULARS PAGE NO.

1.0 GENERAL 22.0 INTENT OF SPECIFICATION 2

3.0 SCOPE OF WORK 3

4.0 SPECIFIC EXCLUSIONS 20

5.0 PHYSICAL AND OTHER PARAMETERS 20

6.0 SCHEDULE OF QUANTITIES 217.0 BASIC REFERENCE DRAWINGS 21

8.0 DIFFERENT SECTIONS OF TECHN.SPECIFICATION

22

9.0 MANDATORY SPARES 23

10.0 SPECIAL TOOL AND TACKLES 2311.0 FACILITIES TO BE PROVIDED BY EMPLOYER 2312.0 SPECIFIC REQUIREMENT 24

Annexure-I MANDATORY SPARES 6 pagesAnnexure -II LIST OF TENDER DRAWINGS 7 pagesAnnexure -III AIR CONDITIONING SYSTEM SPECIFICATION

TECHNICAL SPECIFICATION OF GIS HALL EXTN.3 pages

Annexure -IV VENTILATION SYSTEM FOR GIS HALL EXTN. 1 pagesAnnexure -V BUILDINGS-GENERAL REQUIREMENT 7 pagesAnnexure -VI DESCRIPTION OF ITEMS OF BPS GIVEN IN

SHORT FORM1 pages

Annexure -VII TECHNICAL SPECIFICATION OF EVENTLOGGER

2 pages

Annexure -VIII DETAILS REGARDING BAY CONTROLLER UNIT(BCU)

3 pages

Annexure-IX NORMALLY TECHNICALLY FEASIBLE RANGE OFTRANSFORMER & REACTOR LOSSES

1 Page


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Section Project, Rev. 0 Page 1 of 32

Substation Package-S1 under a) Common Transmission Systemassociated with Generation Projects inNagapattinam/Cuddalore Area, Tamilnadu (Project ID:206), b) Transmission System required for evacuation ofpower from Kudgi TPS of NTPC Ltd. (Project ID:403), c) Under System Strengthening in SR for import ofpower from ER (Project ID:443). & d) Under Transmission System for connectivity for NCC Power Projects Ltd.(Project ID:446)

1.0 GENERAL

1.1 Preamble:

1.1.1 Power Grid Corporation of India Ltd. (POWERGRID), A Govt. of IndiaEnterprise is responsible for Bulk Power Transmission of electrical energy

from various central Govt. Power Projects to various utilities/ beneficiariesand interconnecting regional grids, operating and maintaining the NationalElectrical Grid of India. It is established with mandate of We will becomea Global Transmission Company with Dominant Leadership in EmergingPower Markets with World Class Capabilities by:

World Class: Setting superior standards in capital projectmanagement and operations for the industry and ourselves

Global: Leveraging capabilities to consistently generate maximumvalue for all stakeholders in India and in emerging and growingeconomies.

Inspiring, nurturing and empowering the next generation of

professionals.

Achieving continuous improvements through innovation and state ofthe art technology.

Committing to highest standards in health, safety, security andenvironment. as its mission.

1.1.2 POWERGRID is undertaking the extension of (i) 400kV Salem Poolingstation, 400kV Madhugiri substation & 400kV Nagapattinam (GIS)substation under Common Transmission System associated withGeneration Projects in Nagapattinam/ Cuddalore Area, Tamil Nadu, (ii)400kV Narendra new (Kudgi) GIS substation, 400kV Bidadi (GIS)

substation & 400kV Madhugiri substation under Transmission Systemrequired for evacuation of power from Kudgi TPS of NTPC Ltd., (iii)400kV Khammam substation & 400kV Nagarjuna Sagar substation underSystem Strengthening in SR for import of power from ER and 400kVNellore pooling station under Transmission System for connectivity forNCC Power Projects Ltd.

1.2 The associated Transmission System :

Transmission lines associated with various Transmission systems is asfollows. The terminating lines are being developed under Tariff BasedCompetitive Bidding (TBCB).

A. Common Transmission System associated with Generation

Projects in Nagapattinam/ Cuddalore Area, Tamil Nadu

- Nagapattinam (GIS) Pooling stationSalem 765kV D/C line (initially

to be charged at 400kV) (line length is approx. 250km) with


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2x63MVAR, 420kV Shunt Reactors, LAs & NGRs (500 ohms) at

both ends.

- SalemMadhugiri 765kV S/C line (initially to be charged at 400kV)

(line length is approx. 220km) with 1x63 MVAR, 420kV Shunt

Reactor, LAs & NGRs (500 ohms) at Madhugiri end.

- Extension of 400kV Salem Pooling Station, 400kV Madhugiri

substation & 400kV Nagapattinam (GIS) Pooling Station

B. Transmission System required for evacuation of power from

Kudgi TPS of NTPC Ltd.

- MadhugiriNarendra new (Kudgi) 765kV D/C line (initially to be

charged at 400kV) (line length is approx. 350km) with 2x63MVAR,

420kV Shunt Reactors, LAs & NGRs (600 ohms) at both ends.

- MadhugiriBidadi 400kV D/C quad line (line length is approx.

100km)- Extension of 400kV Madhugiri substation, 400kV Bidadi substation

& 400kV Narendra new (Kudgi) GIS Pooling Station

C. System Strengthening in SR for import of power from ER.

- KhammamNagarjuna Sagar 400kV D/C line (line length is approx.

150km)

- Extension of 400kV Khammam substation & 400kV Nagarjuna

Sagar substation

D. Transmission System for connectivity for NCC Power Projects

Ltd.

- NCC Generation SwitchyardNellore Pooling station 400kV D/C

quad line (line length is approx. 50km)

- Extension of 400kV Nellore Pooling Station.

2.0 SCOPE

2.1 The scope of this specification covers the following for substation

package-S1:

A. Common Transmission System associated with Generation

Projects in Nagapattinam/ Cuddalore Area, Tamil Nadu

(a) Extension of 400kV Salem Pooling Station with the following:-


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(i) 400kV bays for termination of Nagapattinam (GIS) PoolingstationSalem PS 765kV D/C line (initially to be charged at400kV).

(b) Extension of 400kV Madhugiri Substationwith the following:-

(i) 400kV bay for termination of Madhugiri substationSalem PS765kV S/C line (initially to be charged at 400kV).

(c) Extension of 400kV Nagapattinam Pooling Station (AIS portion)with the following:-

(i) Outdoor Equipments for 400kV bays for termination ofNagapattinam (GIS) Pooling StationSalem PS 765kV D/Cline (initially to be charged at 400kV). GIS shall be installedunder a separate contract by other agency.

B. Transmission System required for evacuation of power fromKudgi TPS of NTPC Ltd.

(a) Extension of 400kV Madhugiri Substationwith the following:-

(i) 400kV bays for termination of Madhugiri Narendra new(Kudgi) 765kV D/C line (initially to be charged at 400kV)alongwith 2x63MVAR line Reactors and associated 120kVSurge Arresters & NGRs (600 Ohms).

(ii) 400kV bays for termination of Madhugiri Bidadi 400kV D/Cquad line

(b) Extension of 400kV Bidadi Substationwith the following:-

(i) 400kV bays for termination of Bidadi Madhugiri 400kV D/Cquad line (GIS equipment for the extension shall be suppliedby POWERGRID).

(c) Extension of 400kV Narendra new (Kudgi) Substationwith thefollowing:-

(i) Supply of 2 numbers 420kV, 63MVAR line Reactors andassociated 120kV Surge Arresters & NGRs (600 Ohms).

C. Under System Strengthening in SR for import of power from

ER.

(a) Extension of 400kV Khammam Substationwith the following:-


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(i) 400kV bays for termination of Khammam Nagarjuna SagarD/C line

(b) Extension of 400kV Nagarjuna Sagar Substation with thefollowing:-

(i) 400kV bays for termination of Khammam Nagarjuna SagarD/C line

D. Under Transmission System for connectivity for NCC Power

Projects Ltd.

(a) Extension of 400kV Nellore Pooling Stationwith the following:-

(i) 400kV bays for Nellore Pooling station NCC GenerationSwitchyard D/C quad line

2.2 The detailed scope of work for each substation is brought out insubsequent clauses of this section:-

2.2.1 Common Transmission System associated with GenerationProjects in Nagapattinam/ Cuddalore Area, Tamil Nadu

2.2.1.1 Extension of 400kV Salem (Dharmapuri) Pooling Station

2.2.1.1.1 Design, Engineering, Manufacture, Testing, Supply includingtransportation & insurance, storage, Erection, Testing andCommissioning of the following equipments/items, complete in allrespects.

(a) 400kV Circuit Breakers, Isolators, Current Transformers,Capacitive Voltage Transformers, Surge Arresters, Wave Trapsand Bus Post Insulators.

(b) Complete Relay and Protection system for 400kV bays underpresent scope. Existing bus bar protection is of M/s Siemens make(7SA52). Bay units of Bus bar relay are available for bays underpresent scope. Necessary integration, wiring, cabling with existingBus Bar protection relays for the bays under present scope shallbe done by the contractor.

(c) Augmentation of existing substation automation system byproviding necessary bay IEDs alongwith associated equipments for6 (six) numbers 400kV bays (bay as identified in TechnicalSpecification, Section-Substation Automation).


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Salem PS (Dharmapuri) substation is equipped with substationautomation system based on IEC 61850 protocols. The contractorhas to integrate, wire and modify the control & protection systemand IED to be supplied under present scope with the existingsubstation automation system and update the system database

including hardware & software along with associated equipments.

(d) PLCC System at Salem PS end for the following lines.

Nagapattinam (GIS) Pooling station Salem PS 765kV D/Cline (initially to be charged at 400kV)

Salem PSMadhugiri 765kV S/C line (initially to be charged at400kV)

(e) 1.1kV grade Power & Control cables along with completeaccessories. Cable alongwith power receptacle for oil filtrationmachine required for 420kV Reactor, auxiliary power & control

cables from BMK/Control Room/GIS hall to Reactor MB are also inthe present scope of work.

(f) Lattice and pipe structures (galvanised): Standard 400kV Towers &Beams and Equipment support structures (except CB supportstructure) shall be provided as per Employers drawings to beprovided during detailed engineering. CB support structure shall beas per CB manufacturers design.

(g) Insulator strings and hardware, Clamps & Connectors (includingterminal connectors for owner supplied reactors), Equipmentterminal connector, Conductors, Aluminum tubes, Bus bar and

earthing materials, Bay marshalling box, spacers, cable supportingangles/channels, cable pull box, Cable trays & covers, Junctionbox, buried cable trenches as required. Main buses shall also beextended under present scope.

(h) Lighting and illumination of the switchyard area under presentscope of work.

(i) Main earth mat is available in the 400kV Bay extension area. Allthe equipments, structures, cable trenches, auxiliary earth mat forisolators etc. shall be earthed by connecting them to existing mainearth mat by the contractor. Existing Main earth mat(EMC/DEL/SALEM/ELCL/EMAT-LAY-005, Rev.1) is enclosed withthe tender documents.

(j) Fire protection system (HVW spray system, hydrant system andcomplete U/G and O/G piping including all accessories etc. outsidethe pump house for owner supplied Line Reactors). Piping for fireprotection system shall be extended from nearest header. One


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number portable fire extinguisher (CO2 type) of 4.5kg for eachswitchyard panel room as per bid proposal sheets (BPS) shall alsobe provided. Existing Fire Protection piping layout(PNGA/MCA/EMC-SALEM-FF-YARD-906, Rev.02) is enclosedwith the tender documents.

(k) Air-conditioning system and fire alarm system for switchyard panelroom shall be provided and integrated with SAS/IED.

(l) 145kV, 1-phase Circuit Breaker for NGR bypassing scheme.

(m) Any other equipment/material required to complete the specifiedscope.

2.2.1.1.2 Mandatory Spares - Design, engineering, manufacture, Testing, andSupply on FOR destination basis including transportation & insurance,storage at site as per Annexure-I.

2.2.1.1.3 Civil Works - The scope of work shall include but shall not be limited tothe following:

i) Civil works for the following based on Employer supplied drawings, to beprovided during detailed engineering :-

(a) Foundation for Owner supplied line reactors and associated SA &NGR along with Foundation bolt, jacking pad, pylon supports, railcum road, unloading platform and fire walls between 400kVReactors as applicable.

(b) Foundation for Gantries, Equipment supports structures.

(c) Cable trenches along with covers and sump pits. The existingcable trench layout drawing shall be provided during detailedengineering based on which the contractor shall submit detailedcable trench layout.

(d) Cable trench crossings with roads, culverts etc.

(e) Switchyard Panel Room (size 3.5 mx9m).

ii) Civil work including design and drawing by the vendor:-

(a) Foundation for lighting poles, bay marshalling boxes, panels,control cubicles etc. as required.

(b) Antiweed treatment, PCC and stone spreading shall be provided inthe extension area.


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2.2.1.2 Extension of 400kV Madhugiri (Tumkur) Substation

2.2.1.2.1 Design, Engineering, Manufacture, Testing, Supply includingtransportation & insurance, storage, Erection, Testing andCommissioning of the following equipments/items, complete in all

respects.



(c) Augmentation of existing substation automation system byproviding necessary bay IEDs alongwith associated equipments for3 (three) numbers 400kV bays (bay as identified in TechnicalSpecification, Section-Substation Automation).

Madhugiri (Tumkur) substation is equipped with substationautomation system based on IEC 61850 protocols. The contractorhas to integrate, wire and modify the control & protection systemand IED to be supplied under present scope with the existingsubstation automation system and update the system databaseincluding hardware & software along with associated equipments.

(d) PLCC System at Madhugiri end for the following lines.

MadhugiriSalem PS 765kV S/C line (initially to be chargedat 400kV)

(e) 1.1kV grade Power & Control cables along with completeaccessories. Cable alongwith power receptacle for oil filtrationmachine required for 420kV Reactor, auxiliary power & controlcables from BMK/Control Room to Reactor MB are also in thepresent scope of work.



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(g) Insulator strings and hardware, Clamps & Connectors (includingterminal connectors for owner supplied reactors), Equipmentterminal connector, Conductors, Aluminum tubes, Bus bar andearthing materials, Bay marshalling box, spacers, cable supportingangles/channels, cable pull box, Cable trays & covers, Junction

box, buried cable trenches as required. Main buses shall also beextended under present scope.


(i) Main earth mat is available in the 400kV Bay extension area. Allthe equipments, structures, cable trenches, auxiliary earth mat forisolators etc. shall be earthed by connecting them to existing mainearth mat by the contractor. Grid spacing of existing Main earthmat is 7 X 7 Mtr. Existing earthmat layout (KPD-A176-PGCIL-TUM-E1-008A, Rev. R2) is enclosed with the tender documents.

(j) Fire protection system (HVW spray system, hydrant system andcomplete U/G and O/G piping including all accessories etc. outsidethe pump house for owner supplied Line Reactors). Piping for fireprotection system shall be extended from nearest header. Onenumber portable fire extinguisher (CO2 type) of 4.5kg for eachswitchyard panel room as per bid proposal sheets (BPS) shall alsobe provided. Existing Fire Protection piping layout (BCFSL/PGCIL-KEC/TUMKUR/YPL, Rev.1) is enclosed with the tenderdocuments.

(k) Air-conditioning system and fire alarm system for switchyard panel

room shall be provided and integrated with SAS/IED.

(l) 145kV, 1-phase Circuit Breaker for NGR bypassing scheme.



2.2.1.2.3 Civil Works - The scope of work shall include but shall not be limited to

the following:


(a) Foundation for Owner supplied line reactors and associated SA &NGR along with Foundation bolt, jacking pad, pylon supports, rail


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cum road, unloading platform and fire walls between 400kVReactors as applicable.






(a) Foundation for lighting poles, bay marshalling boxes, panels,

control cubicles etc. as required.


2.2.1.3 Extension of 400kV Nagapattinam GIS Substation (excluding GISscope)


(a) 400kV Capacitive Voltage Transformers, Surge Arresters, WaveTraps and Bus Post Insulators.

(b) Complete Relay and Protection system for 400kV bays underpresent scope. CB Relay panel for the GIS bays are beingexecuted under a separate package. Necessary interface includingcabling, wiring, termination etc. with the existing GIS bayequipments, CB Relay panels / LCC panels of bays are underpresent scope.

Bay units of distributed bus bar protection for the bays underpresent scope are available. Necessary interface with control, relay& protection panel shall be under present scope along with allnecessary Co-ordination for AC and DC interconnection withexisting scheme (Panels) for the bays under present scope. Detailsof existing Bus Bar protection shall be furnished to the contractorduring detailed engineering.


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Nagapattinam GIS substation is equipped with substationautomation system based on IEC 61850 protocols. The contractorhas to integrate, wire and modify the control & protection systemwith the existing substation automation system and update thesystem database including hardware & software along withassociated equipments. Details of existing substation automationsystem shall be furnished to the contractor during detailedengineering.

(d) PLCC System at Nagapattinam PS end for the following lines.

Nagapattinam (GIS) Pooling stationSalem PS 765kV D/C

line (initially to be charged at 400kV)

(e) 1.1kV grade Power & Control cables along with completeaccessories. Cable alongwith power receptacle for oil filtrationmachine required for 420kV Reactor, auxiliary power & controlcables from BMK/Control Room/GIS hall to Reactor MB are also inthe present scope of work.

(f) Lattice and pipe structures (galvanised): 400kV Towers, Beam andEquipment support structures shall be provided as per Employersdrawing enclosed.

(g) Insulator strings and hardware, Clamps & Connectors (includingterminal connectors for owner supplied reactors), Equipmentterminal connector, Conductors, Aluminum tubes, Bus bar andearthing materials, spacers, cable supporting angles/channels,cable pull box, Cable trays & covers, Junction box, buried cabletrenches as required. Connection of outdoor AIS equipment toexisting GIS SF6 to air bushing for the bays is under presentscope.


(i) Main earth mat is being provided in the 400kV Bay extension areaunder a separate package. All the equipments, structures, cabletrenches, auxiliary earth mat for isolators etc. shall be earthed byconnecting them to existing main earth mat by the contractor.Details of existing earth mat shall be provided to the contractorduring detail engineering.


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(j) Fire protection system (HVW spray system, hydrant system andcomplete U/G and O/G piping including all accessories etc. outsidethe pump house for owner supplied Line Reactors). Piping for fireprotection system shall be extended from nearest header(preferably nearby bus reactor bay). Details of existing fire

protection piping layout shall be provided to the contractor duringdetail engineering.

(k) 145kV, 1-phase Circuit Breaker for NGR bypassing scheme.

(l) Any other equipment/material required to complete the specifiedscope.

GIS for the bays under present scope are of M/s Hyosung, South Koreamake and are being constructed by other agency. The contractor shallco-ordinate with the agency (who will be erecting GIS) for supervision,erection, testing and commissioning of AIS portion of the bays.




(a) Foundation for Owner supplied line reactors and associated SA &

NGR along with Foundation bolt, jacking pad, pylon supports, railcum road, unloading platform and fire walls between 400kVReactors as applicable.



(d) Cable trench crossings with roads, culverts etc. However, trenchlayout shall be developed and submitted for approval by thecontractor.




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2.2.2 Transmission System required for evacuation of power from Kudgi

TPS of NTPC Ltd.

2.2.2.1 Extension of 400kV Madhugiri (Tumkur) Substation


(a) 2 Nos. 63 MVAR, 420kV, 3 phase Shunt Reactor Reactors alongwith associated 120 KV Surge Arrestors and Neutral GroundingReactors of 600 Ohms including all materials. Complete design

and detailed engineering shall be done by contractor. Supply ofInsulating oil (for each reactor with associated NGRs), onlinedissolved gas (multi-gas) and moisture analyser and onlineinsulating oil drying system (cartridge type) as per BPS is alsounder the scope.

Foundation bolts for line Reactor. The contractor shall indicaterecommended pocket size for placing foundation bolts in theirfoundation plan drawing.

(a) 400kV Circuit Breakers, Isolators, Current Transformers,Capacitive Voltage Transformers, Surge Arresters, Wave Traps

and Bus Post Insulators.



Madhugiri (Tumkur) substation is equipped with substationautomation system based on IEC 61850 protocols. The contractorhas to integrate, wire and modify the control & protection systemand IED to be supplied under present scope with the existing


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substation automation system and update the system databaseincluding hardware & software along with associated equipments.

(d) PLCC System for the following lines.

For both Madhugiri and Narendra new (Kudgi) end ofMadhugiriNarendra new (Kudgi) 765kV D/C line (initially to

be charged at 400kV)

For Madhugiri end of MadhugiriBidadi 400kV D/C quad line

(e) 1.1kV grade Power & Control cables along with completeaccessories. Cable alongwith power receptacle for oil filtrationmachine required for 420kV Reactor, auxiliary power & controlcables from BMK/Control Room to Reactor MB are also in thepresent scope of work.


(g) Insulator strings and hardware, Clamps & Connectors, Equipmentterminal connector, Conductors, Aluminum tubes, Bus bar andearthing materials, Bay marshalling box, spacers, cable supportingangles/channels, cable pull box, Cable trays & covers, Junctionbox, buried cable trenches as required.


(i) Main earth mat is available in the 400kV Bay extension area. Allthe equipments, structures, cable trenches, auxiliary earth mat forisolators etc. shall be earthed by connecting them to existing mainearth mat by the contractor. Grid spacing of existing Main earthmat is 7 X 7 Mtr. Existing earthmat layout (KPD-A176-PGCIL-TUM-E1-008A, Rev. R2) is enclosed with the tender documents.

(j) Fire protection system (HVW spray system, hydrant system andcomplete U/G and O/G piping including all accessories etc. outsidethe pump house for owner supplied Line Reactors). Piping for fireprotection system shall be extended from nearest header. Onenumber portable fire extinguisher (CO2 type) of 4.5 kg for eachswitchyard panel room as per bid proposal sheets (BPS) shall alsobe provided.


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(l) 145kV, 1-phase Circuit Breaker for NGR bypassing scheme





(a) Foundation for Owner supplied line reactors and associated SA &NGR along with Foundation bolt, jacking pad, pylon supports, railcum road, unloading platform and fire walls between 400kVReactors as applicable.







(b) Antiweed treatment, PCC and stone spreading shall be provided inthe extension area. The stone (gravel) is partly laid in theswitchyard under area of present scope of work. The removal andre-speading of the gravel after cleaning and washing shall be in thecontractors scope. Antiweed treatment and Extra gravel (ifrequired) matching with the existing substation required forcompletion of the scope of work shall also be in contractors scope.


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2.2.2.2 Extension of 400kV Bidadi GIS Substation (excluding GIS scope)

2.2.2.2.1 Design, Engineering, Manufacture, Testing, Supply includingtransportation & insurance, storage, Erection, Testing andCommissioning of the following equipments/items, complete in all

respects. GIS (M/s Hyosung, South Korea make) for present twonumbers bays shall be provided by the owner through other agency. TheGIS bus duct (inside the GIS hall and outside) shall also be provided bythe owner through the agency. The contractor shall co-ordinate with thatagency (i.e M/s Hyosung) for supervision, erection, testing andcommissioning of the AIS portion of the bays and the civil works shall beundertaken under the present scope of work. Drawings of GIS shall beprovided to the contractor during detailed engineering.

(a) 400kV Capacitive Voltage Transformers, Surge Arresters, WaveTraps and Bus Post Insulators.

(b) Complete Relay and Protection system for 400kV bays underpresent scope. Necessary interface including cabling, wiring,termination etc. with the existing GIS bay equipments, CB Relaypanels / LCC panels of bays are under present scope.

Augmentation of existing Bus Bar protection for present bays isalso in present scope. Bay units of distributed bus bar protectionfor the bays under present scope are available. Necessaryinterface with control, relay & protection panel shall be underpresent scope along with all necessary Co-ordination for AC andDC interconnection with existing scheme (Panels) for the baysunder present scope. Details of existing Bus Bar protection shall be

furnished to the contractor during detailed engineering.

(c) Bidadi GIS substation is equipped with substation automationsystem based on IEC 61850 protocols. The contractor has tointegrate, wire and modify the control & protection system and IEDto be supplied under present scope with the existing substationautomation system and update the system database includinghardware & software along with associated equipments. Details ofexisting substation automation system shall be furnished to thecontractor during detailed engineering.

(d) PLCC System at Bidadi end for the following lines.

BidadiMadhugiri 400kV D/C quad line

(e) 1.1kV grade Power & Control cables along with completeaccessories. Auxiliary Power supply and control cables from BayMB/control room are in present scope of work.


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(f) Lattice and pipe structures (galvanised): 400kV Towers, Beam andEquipment support structures shall be provided as per Employersdrawing enclosed. Matching with existing connection details, if anyshall be in the scope of contractor.

(g) Insulator strings and hardware, Clamps & Connectors, Equipmentterminal connector, Conductors, Aluminum tubes, Bus bar andearthing materials, Bay marshalling box, spacers, cable supportingangles/channels, cable pull box, Cable trays & covers, Junctionbox, buried cable trenches as required. Connection of outdoor AISequipment to existing GIS SF6 to air bushing for the bays is underpresent scope.

(h) Lighting and illumination of the switchyard area under presentscope of work shall be provided by the Contractor as per BidDrawing/Price Schedule (BPS) enclosed by the Employer.

(i) Main earthmat inside the switchyard is available. The existingEarthmat layout drawing (O10024-E-IS-SY-SK-003, Rev. A) isattached with the bid documents. All the outdoor equipment,structures, cable trenches, auxiliary earth mat for isolators etc.shall be earthed by connecting them to the main earth mat by thecontractor. Extension of Earth mat inside the GIS buildings is alsoin the scope of contractor.

(j) Air conditioning & Ventilation System of extended area of GIS hall(As per Annexure-III& Annexure-IVrespectively)

(k) Any other equipment/material required to complete the specified

scope.




(a) Foundation for Gantries, Equipment supports structures.

(b) Cable trenches along with covers and sump pits. The existingcable trench layout drawing shall be provided during detailedengineering based on which the contractor shall submit detailedcable trench layout.


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(c) Cable trench crossings with roads, culverts etc.


(a) Extension of 400kV GIS Hall for 2 nos. lines, 2 nos. future bussectionalisers and one future ICT( i.e. approximately 32x14.7 m forGIS Hall including LCC/Relay/PLCC room) is under present scope(as per details in Annexure-V). The detail of existing GIS hall andthe GA for the extension of the GIS hall is given in the tenderdrawing. The detailed drawing for the extension of the GIS hall asper the GA drawing need to be developed by the contractor. Theextension of GIS hall shall be done in such a way that the existingEOT crane shall be used for extension portion also.

(b) All civil works including foundations alongwith associated with

erection of SF6 gas insulated metal enclosed switchgear alongwith its SF6 ducts and SF6 to Air Bushing. Civil works including allfoundations for all equipment inside GIS Hall are included in GISbuilding. The cable trenches inside 420kV GIS halls & associatedLCC/Relay/PLCC rooms are also included in the scope of GIS hall.The design of GIS equipment shall be handed over to thesuccessful bidder during detailed engineering stage.

(c) Other Contractor supplied drawings: Foundations for lighting poles,panels and control cubicles of equipments wherever required.

2.2.2.3 Extension of 400kV Narendra New (Kudgi) GIS Substation

2.2.2.3.1 Design, Engineering, Manufacture, Testing, Supply includingtransportation & insurance, storage, Testing and Commissioning of thefollowing equipments/items, complete in all respects.

(a) 2 Nos. 63 MVAR, 420kV, 3 phase Shunt Reactor Reactors alongwith associated 120 KV Surge Arrestors and Neutral GroundingReactors of 600 Ohms at Kudgi (New Narendra) S/S including allmaterials, Cables (between Reactor and its Marshalling box),supply of special cable(if any), accessories for the Reactor andspares. Complete design and detailed engineering shall be doneby contractor. Supply of Insulating oil (for each reactor withassociated NGRs), online dissolved gas (multi-gas) and moistureanalyser and online insulating oil drying system (cartridge type) asper BPS is also under the scope.

(b) Any other equipment/material required to complete the specifiedscope.


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2.2.3 System Strengthening in SR for import of power from ER

2.2.3.1 Extension of 400kV Khammam Substation

2.2.3.1.1 Design, Engineering, Manufacture, Testing, Supply including

transportation & insurance, storage, Erection, Testing andCommissioning of the following equipments/items, complete in allrespects.


(b) Complete Control, Relay and Protection system for 400kV baysunder present scope.

Augmentation of existing Bus Bar protection for present bays is

also in the present scope. Existing bus bar protection scheme isABB make RADSS (high impedance type). Necessary integration,wiring, cabling with existing Bus Bar protection relays (including triprelays if required) for the bays under present scope shall be doneby the contractor.

Further, Event Logger shall also be supplied by the contractors asTechnical Specification enclosed herewith in Annexure-VII.

(c) Bay controller units (BCU) as per BPS to be installed in the controlpanel and to be integrated with existing system. The BCU shall beintegrated to NTAMC project as per Annexure-VIII of this

specification.

(d) PLCC System at Khammam end for the following lines.

Khammam Nagarjuna Sagar 400kV D/C line

(e) 1.1kV grade Power & Control cables along with completeaccessories.


(g) Insulator strings and hardware, Clamps & Connectors, Equipmentterminal connector, Conductors, Aluminum tubes, Bus bar andearthing materials, Bay marshalling box, spacers, cable supporting


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SECTION- PROJECT



angles/channels, cable pull box, Cable trays & covers, Junctionbox, buried cable trenches as required. Main buses shall also beextended under present scope.

(h) Battery & Battery Chargers as per rating indicated in the Bid Price

Schedule.

(i) Extension of AC Distribution Board and DC Distribution Board asper BPS. Contractor has to connect these ACDB and DCDBextension modules with the existing ACDB and DCDB throughcables.

(j) Lighting and illumination of the switchyard area under presentscope of work.

(k) Extension of Main earth mat in the 400kV Bay extension area. Allthe equipments, structures, cable trenches, auxiliary earth mat for

isolators etc. shall be earthed by connecting them to existing mainearth mat by the contractor. Existing Main earth mat ((0)-G71770-ACXXX-L163(KH)-001-0, Rev.0) is enclosed with the tenderdocuments.











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(b) Antiweed treatment, PCC and stone spreading shall be provided inthe extension area. The stone (gravel) is partly laid in theswitchyard under area of present scope of work. The removal andre-speading of the gravel after cleaning and washing shall be in the

contractors scope. Antiweed treatment and Extra gravel (ifrequired) matching with the existing substation required forcompletion of the scope of work shall also be in contractors scope.

2.2.3.2 Extension of 400kV Nagarjuna Sagar Substation


(a) 400kV Circuit Breakers, Isolators, Current Transformers,

Capacitive Voltage Transformers, Surge Arresters, Wave Trapsand Bus Post Insulators.

(b) Complete Control, Relay and Protection system for 400kV baysunder present scope.

Augmentation of existing Bus Bar protection for present bays isalso in present scope. Existing bus bar protection scheme isEnglish Electric make FAC 34 (high impedance type). Necessaryintegration, wiring, cabling with existing Bus Bar protection relays(including trip relays if required) for the bays under present scopeshall be done by the contractor.

(c) Bay controller units (BCU) as per BPS to be installed in the controlpanel and to be integrated with existing system. The BCU shall beintegrated to NTAMC project as per Annexure-VIII of thisspecification.

(d) PLCC System at Nagarjuna Sagar end for the following lines.

Khammam Nagarjuna Sagar 400kV D/C line

(e) 1.1kV grade Power & Control cables along with completeaccessories.



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(g) Insulator strings and hardware, Clamps & Connectors, Equipmentterminal connector, Conductors, Aluminum tubes, Bus bar andearthing materials, Bay marshalling box, spacers, cable supportingangles/channels, cable pull box, Cable trays & covers, Junction

box, buried cable trenches as required.

(m) Battery & Battery Chargers as per rating indicated in the Bid PriceSchedule.

(n) Extension of AC Distribution Board and DC Distribution Board asper BPS. Contractor has to connect these ACDB and DCDBextension modules with the existing ACDB and DCDB throughcables.


(i) Extension of Main earth mat in the 400kV Bay extension area. Allthe equipments, structures, cable trenches, auxiliary earth mat forisolators etc. shall be earthed by connecting them to existing mainearth mat by the contractor. Existing Main earth mat (PG-EARTHMAT-NSAGAR, Rev.0) is enclosed with the tenderdocuments.

(j) Any other equipment/material required to complete the specifiedscope.

2.2.3.2.2 Mandatory Spares - Design, engineering, manufacture, Testing, and

Supply on FOR destination basis including transportation & insurance,storage at site as per Annexure-I.






(d) Existing gate is to be dismantled and re-erected.


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2.2.4 Transmission System for connectivity for NCC Power Projects Ltd

2.2.4.1 Extension of 400kV Nellore Pooling Station



(b) Complete Relay and Protection system for 400kV bays underpresent scope. Existing bus bar protection is of M/s ALSTOM make

(P74x). Bay units of Bus bar relay are available for bays underpresent scope. Necessary integration, wiring, cabling with existingBus Bar protection relays for the bays under present scope shallbe done by the contractor.

(c) Augmentation of existing substation automation system byproviding necessary bay IEDs alongwith associated equipments for6 (six) numbers 400kV bays (bay as identified in TechnicalSpecification, Section-Substation Automation).

Nellore PS substation is equipped with substation automationsystem based on IEC 61850 protocols. The contractor has tointegrate, wire and modify the control & protection system and IEDto be supplied under present scope with the existing substationautomation system and update the system database includinghardware & software along with associated equipments.

(d) PLCC System for the following lines.


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SECTION- PROJECT



For both Nellore PS end and NCC Switchyard end of NellorePooling station NCC Generation Switchyard 400kV D/C quadline.

(e) 1.1kV grade Power & Control cables along with complete

accessories. Cable alongwith power receptacle for oil filtrationmachine required for 420kV Reactor, auxiliary power & controlcables from BMK/Control Room to Reactor MB are also in thepresent scope of work.


(g) Insulator strings and hardware, Clamps & Connectors, Equipment

terminal connector, Conductors, Aluminum tubes, Bus bar andearthing materials, Bay marshalling box, spacers, cable supportingangles/channels, cable pull box, Cable trays & covers, Junctionbox, buried cable trenches as required. Main buses shall also beextended under present scope.


(i) Extension of Main earth mat in the 400kV Bay extension area. Allthe equipments, structures, cable trenches, auxiliary earth mat forisolators etc. shall be earthed by connecting them to existing main

earth mat by the contractor. Existing Main earth mat (J-843/NELLORE/E-DRG/EAR/ 400kV/008A, Rev.1) is enclosed withthe tender documents.

(j) One number portable fire extinguisher (CO2 type) of 4.5 kg foreach switchyard panel room as per bid proposal sheets (BPS) shallalso be provided.





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i) Civil works for the following based on Employer supplied drawings, to beprovided during detailed engineering:-




(d) Switchyard Panel Room (size 3.5mx9m).




(c) Drainage system layout using standard sections.

2.2 The Bidders are advised to visit the substation site and acquaintthemselves with the topography, infrastructure and also the design

philosophy. Before proceeding with the construction work in the existing

substation, the Contractor shall fully familiarize himself with the site

conditions and General arrangements & scheme etc. Though the Owner

shall endeavor to provide the information, it shall not be binding for the

Owner to provide the same. The bidder shall be fully responsible for

providing all equipment, materials, system and services specified or

otherwise which are required to complete the construction andsuccessful commissioning, operation & maintenance of the substation

and reactors in all respects. All materials required for the Civil and

construction/installation work shall be supplied by the Contractor. The

cement and steel shall also be supplied by the Contractor.


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The complete design (unless specified otherwise in specificationelsewhere) and detailed engineering shall be done by the

Contractor based on conceptual tender drawings.

2.3 The Contractor shall also be responsible for the overall co-ordination with

internal/external agencies; Supplier of Owners supplied equipments,project management, training of Owners manpower, loading, unloading,handling, moving to final destination for successful erection, testing and

commissioning of the substation/switchyard.

2.4 Design of substation and its associated electrical & mechanicalauxiliaries systems includes preparation of single line diagrams and

electrical layouts, Erection key diagrams, electrical and physical

clearance diagrams, control and protection schematics, wiring and

termination schedules, foundation & cable trench layout drawingincluding associated invert levels, civil designs (as applicable) anddrawings, design of fire-fighting system and air conditioning system,

lighting/illumination and other relevant drawings & documents requiredfor engineering of all facilities within the fencing to be provided under

this contract, are covered under the scope of the Contractor.

2.5 Any other items not specifically mentioned in the specification but whichare required for Erection, Testing and Commissioning and satisfactoryoperation of the substations are deemed to be included in the scope of

the specification and the same shall be supplied and erected by the

contractor unless specifically excluded elsewhere.

The Contractor shall arrange all T&P (such as necessary supports,

cranes, ladders, platforms etc.) for erection, testing & commissioning of

the system at his own cost. Further, all consumables, wastage anddamages shall be to the account of contractor.

2.6 Owner has standardized its technical specification for variousequipments and works for different voltage levels. Items, which are not

applicable for the scope of this package as per schedule of quantities

described in BPS, the technical specification for such items should not

be referred to.

3.0 SPECIFIC EXCLUSIONS

The following items of work are specifically excluded from the scope of

the specification:

(a) Boundary wall along substation property line.(b) Owners site office and stores.(c) Survey and soil investigation including soil resistivity

measurement.(d) Contouring and substation leveling.


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(e) Approach road up to substation entrance.(f) Fire protection system for reactors for Kudgi (New Narendra)

GIS substation.(g) All civil works pertaining to foundations including rail track,

soak pit & fire resistant wall for Reactor of Kudgi (New

Narendra) GIS substation.(h) All cabling work from control room to Reactor MB/NGR MBincluding Supply of cable except special cable (if any) for Kudgi(New Narendra) GIS substation.

(i) Earthing connection of Reactors to Owners earthmat & earthelectrodes for Kudgi (New Narendra) GIS substation.

(j) 400kV Terminal connectors for Reactors for Kudgi (NewNarendra) GIS substation.

4.0 PHYSICAL AND OTHER PARAMETERS

4.1 Location of the Substation - The location of substation is indicated

below:

S.No. Name of S/S Name of State Nearest RailHead

1 Salem PS Tamil Nadu Salem

2 Nagapattinam Tamil Nadu Ariyallur

3 Madhugiri Karnataka Tumkur

4 Bidadi Karnataka Bidadi

5 Narendra New (Kudgi) Karnataka Bijapur

6 Khammam Andhra Pradesh Khammam

7 Nagarjuna Sagar Andhra Pradesh Nagarjuna Sagar

8 Nellore PS Andhra Pradesh Nellore

4.2 Meteorological data

The detailed meteorological data of the substations shall be handed

over to successful bidder. However, for design purposes, ambient

temperature should be considered as 50 degree centigrade and other

details are as below:

Altitude Less than 1000 meter above mean sea level (MSL)Snow fall NIL

Seismic Zone As per IS 1893Wind Zone As per IS 875

5.0 SCHEDULE OF QUANTITIES

5.1 The requirement of various items/equipments and civil works are

indicated in Bid price Schedules.


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5.2 All equipments/items for which bill of quantity has been indicated in BPS(Bid price Schedules) shall be payable on unit rate basis. During actual

execution, any variation in such quantities shall be paid based on the

unit rate under each item incorporated in Letter of award.

5.3 Wherever the quantities of items/works are not indicated, the bidder isrequired to estimate the quantity required for entire execution andcompletion of works and incorporate their price in respective Bid price

schedules. For erection hardware items, Bidders shall estimate the total

requirement of the works and indicate module-wise lump sum price bay

wise and include the same in relevant Bid price schedules. For module

identification, Bidder may refer typical drawings enclosed with the

specifications. Any material/works for the modules not specifically

mentioned in the description in BPS, as may be required shall be

deemed to be included in the module itself.

5.4 Bidder should include all such items in the bid proposal sheets, which

are not specifically mentioned but are essential for the execution of thecontract. Item which explicitly may not appear in various schedules and

required for successful Commissioning of substation and shunt reactor

shall be included in the bid price and shall be provided at no extra cost

to purchaser.

6.0 BASIC REFERENCE DRAWINGS

6.1 For 400kV Salem PS, 400kV Madhugiri and 400kV Nellore PSsubstations, breaker and half bus-switching scheme with I type layout

arrangement and 400kV Khammam and 400kV Nagarjuna Sagar

Substations, with breaker and half switching scheme with D-type layout

arrangement is proposed. 400kV Nagapattinam & Narendra New(Kudgi) GIS substation is having with one and half breaker scheme

whereas 400kV Bidadi GIS Substation is having Double Main bus-

switching scheme.

6.2 Single line diagram and general arrangements are enclosed with the biddocuments for reference, which shall be further engineered by the

bidder. The other related drawings shall be provided to the successful

bidder.

6.3 The reference drawings, which form a part of the specifications, aregiven at Annexure-II. The bidder shall maintain the overall dimensions

of the substations, phase to earth clearance, phase to phase clearanceand sectional clearances, clearances between buses, bus heights but

may alter the locations of equipment in consultation with POWERGRID

to obtain the statutory electrical clearances required for the substation.

6.4 The enclosed drawings give the basic scheme, layout of substation,substation buildings, associated services etc. In case of any


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discrepancy between the drawings and text of specification, the

requirements of text shall prevail in general. However, the Bidder is

advised to get these clarified from Purchaser.

7.0 DIFFERENT SECTIONS OF TECHNICAL SPECIFICATION

7.1 For the purpose of present scope of work, technical specification shallconsist of following sections and they should be read in conjunction with

each other.

7.2 In case of any discrepancy between Section-PROJECT, Section-GTRand other technical specifications on scope of works, Section-PROJECT

shall prevail over all other sections.

Sl. No. Sections of Technical Specification Rev. No.

1.0 Section-Project Rev.00

2.a) Section-General Technical Requirement (GTR) Rev.13

2.b) Section-GTR (Transformer & Reactor) Rev.03

3.0 Section-Shunt Reactor, NGR & Surge Arrestor Rev. 08

4.a) Section-Switchgear (Chapter-Circuit Breaker) Rev. 10A

4.b) Section-Switchgear (Except Circuit Breaker) Rev. 10

5.0 Section-Power and Control Cables Rev. 06

6.0 Section-LT Switchgear Rev. 05

7.0 Section-Lighting System Rev. 05

8.0 Section-Battery & Battery Charger Rev. 06

9.0 Section-Fire Protection System Rev. 06

10.0 Section-Air Conditioning System Rev. 04

11.0 Section-Switchyard Erection Rev. 09

12.0 Section- Structures Rev. 06

13.0 Section-Civil Works Rev. 07

14.0 Section-Control and Relay Panels Rev. 08

15.0 Section-Substation Automation System Rev. 03

16.0 Section - PLCC Rev. 05


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7.3 In case of any discrepancy between Section-GTR and individualsections for various equipments, requirement of individual equipment

section shall prevail.

8.0 SPARES

8.1 Mandatory Spares

8.1.1 The Mandatory Spares shall be included in the bid proposal by the

bidder. The prices of these spares shall be given by the Bidder in the

relevant schedule of BPS and shall be considered for evaluation of bid.

It shall not be binding on the purchaser to procure all of these

mandatory spares.

8.1.2 No mandatory spares shall be used during the Commissioning of the

equipment. Any spares required for Commissioning purpose shall be

arranged by the Contractor. The unutilized spares if any brought for

Commissioning purpose shall be taken back by the contract.

9.0 SPECIAL TOOLS AND TACKLES

9.1 The bidder shall include in his proposal the deployment of all special

tools and tackles required for erection, testing, commissioning,

operation and maintenance of equipment. The special tools and tackles

shall only cover items which are specifically required for the equipment

offered and are proprietary in nature. However a list of all such devices

should be indicated in the relevant schedule provided in the BPS.

10.0 FACILITIES TO BE PROVIDED BY THE OWNER

10.1 Owner shall make available the auxiliary supplies at a single point in the

substation on chargeable basis. The prevailing energy rates of the stateshall be applicable. All further distribution from the same for constructionsupply shall be made by the contractor. However, in case of failure of

power due to any unavoidable circumstances, the contractor shall make

his own necessary arrangements like diesel generator sets etc. at his

own cost so that progress of work is not affected and Owner shall in nocase be responsible for any delay in works because of non-availability

of power.

10.2 Owner shall make available construction water supply at a single point

in the substation. All further distribution for the same shall be made by

the Contractor. In case of non-availability or inadequate availability of

water for construction work, the contractor shall make his own

arrangement at his own cost and the Owner shall in no case be

responsible for any delay in works because of non-availability or

inadequate availability of water.


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11.0 SPECIFIC REQUIREMENT

11.1 The bidder shall be responsible for safety of human and equipmentduring the working. It will be the responsibility of the Contractor to co-

ordinate and obtain Electrical Inspector's clearance beforecommissioning. Any additional items, modification due to observation of

such statutory authorities shall be provided by the Contractor at no extracost to the Owner.

11.2 The lighting fixtures for switchyard lighting shall be mounted on LM

(Lightning Masts) wherever LMs are provided. Where LMs are not

available, the fixtures may be mounted on Gantry structures or on

lighting poles to be provided by the contractor.

11.3 Transmission line side tension insulator strings for the line termination

and tension clamp for shield wire termination is also under the scope of

this specification.

11.4 The fault level of all the equipments to be supplied under present scopeshall be as per following:-

S.No Name of S/S Voltage level Fault Level

1 Salem PS 400KV 50KA for 1 sec.

2 Nagapattinam 400KV 50KA for 1 sec.

3 Madhugiri 400KV 50KA for 1 sec.

4 Bidadi 400KV 40KA for 1 sec.

5Narendra New (Kudgi) 400KV 50KA for 1 sec.

6 Khammam 400KV 40KA for 1 sec.

7 Nagarjuna Sagar 400KV 40KA for 1 sec.

8 Nellore PS 400KV 50KA for 1 sec.

11.5 The bidder is required to quote the price of isolator(s) with the insulator

as an integral part of the Isolator(s). In case the price of insulators and

metallics for isolator(s) are quoted separately by the bidder, the total

price quoted by the bidder for such insulators shall be considered as the

lump sum price of insulators required for the specified quantity of

isolator(s) under the subject package(s). In such an event the quantity

of insulators indicated by the bidder shall be treated as the quantityestimated by the bidder.

11.6 Technical requirement for 420kV Reactor:

The manufacturer, should have designed, manufactured, tested,supplied, installed and commissioned 345 kV or above class shuntreactor of atleast 50 MVAR capacity (or equivalent capacity in banks of


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3 single phase units). Shunt reactor should have been in satisfactoryoperation for atleast two (2) years as on the originally scheduled date ofbid opening.

11.7 Normally feasible range of losses for Shunt Reactor is enclosed in

Annexure-IX of Section-Project.

11.8 The contractor shall provide outdoor power receptacle (400A rating) for

oil filtration unit near 420kV Reactors & Transformer area of the

switchyard under present scope.

11.9 All steel works used for grating and supports in Transformers/ Reactors

foundation shall be painted with Zinc Phosphate Primer (Two Packs)

conforming to IS:13238-1991 instead of steel primer and anti-corrosive

bitumastic/ synthetic enamel paint mentioned in para 11.6 of Section-

Civil Works (Rev.07), Technical Specification.

11.10 Erection, Testing and Commissioning of Reactors, Relay & ProtectionPanels, Substation Automation System and PLCC system shall be done

by the contractor under the supervision of respective equipment

manufacturers. Such supervision charges shall be included by the

bidder in the erection charges for the respective equipment in the BPS.

11.11 The frequency range for the earthquake spectra shall be as per IEC

62271-300.

11.12 All RCC shall be as per Bid Price Schedule (BPS). All reinforcement

steel shall be of Fe 500.

11.13 The Contractor shall be responsible to select and verify the route, mode

of transportation and make all necessary arrangement with the

appropriate authorities for the transportation of the equipment. The

dimension of the equipment shall be such that when packed for

transportation, it will comply with the requirements of loading and

clearance restrictions for the selected route. It shall be the responsibility

of the contractor to coordinate the arrangement for transportation of the

transformers for all the stages from the manufacturers work to site.

The conditions of roads, capacity of bridges, culverts etc. in the routeshall also be assessed by the bidders. The scope of any necessarymodification/ extension/ improvement to existing road, bridges, culverts

etc. shall be included in the scope of the bidder. The contractor shallcarry out the route survey along with the transporter and submit thedetail proposal and methodology for transportation of transformer forapproval of Purchaser within three months from the date of award


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11.14 The bidder shall make necessary modifications in the structures to

match fixing details with existing Gantries at site as applicable at

existing substations extension (if applicable)

11.15 Relay panels to be placed in the existing relay panel rooms shall be

adequate to fit in. Contractor should visit the substation and take allmeasure so that relay panels could be placed without any disturbances

to the existing panels.

11.16 The bays covered under the scheme are to be remotely operated from

centralized control centers. The technical requirements for integration

are given as per Annexure-VIII.

12.0 Section GTR and other Technical specifications, the term Purchaserand/or Owner may be read as Employer.


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Annexure-I

LIST OF MANDATORY SPARES


Substation Package-S1 under a) Common Transmission Systemassociated with Generation Projects inNagapattinam/Cuddalore Area, Tamilnadu (Project ID:206), b) Transmission System required for evacuation ofpower from Kudgi TPS of NTPC Ltd. (Project ID:403), c) Under System Strengthening in SR for import of powerfrom ER (Project ID:443). & d) Under Transmission System for connectivity for NCC Power Projects Ltd. (ProjectID:446)

Sl.No

Description Unit

Sa

lemP

S

Madhugiris/s

Nagap

attinamP

S

(G

IS)s/s

Bidad

i(GIS)s/s

NarendraNew

(Kudg

i)GISs/s

Kham

mams

/s

NagarjunaSagar

s/s

NellorePS

A. 420 kV SF6 CircuitBreaker (Without CR)

1a. One complete Pole of CB

including Grading

Capacitor, Interrupter,

pole column, with

operating mechanism and

MB but without support

structure. (2000A, 40kA

for 1 Sec)

No. -- -- -- -- -- 1 1 --

1b. One complete Pole of CB

including Grading

Capacitor, Interrupter,pole column, with

operating mechanism and

MB but without support

structure. (3150A, 50kAfor 1 Sec)

No. 1 1 -- -- -- -- -- 1

2. Grading capacitors (if

applicable)

Set 1 1 -- -- -- 1 1 1

3 Rubber gaskets, O rings

and seals for SF6 gas

(complete replacement for

one breaker)

No. 1 1 -- -- -- 1 1 1

4. Trip coils with resistor No. 2 2 -- -- -- 2 2 2

5. Closing coils with resistor Sets 1 1 -- -- -- 1 1 1

6. Molecular filter for SF6

Circuit for 1 Pole of CB

No. 2 2 -- -- -- 2 2 2

7 Terminal pads and

connectors

Nos. 2 2 -- -- -- 2 2 2

8. Corona rings Nos. 1 1 -- -- -- 1 1 1

9. Relays, power contactors,

switch-fuse units, limit

switches, push buttons,

timers and MCBs etc

Set 1 1 -- -- -- 1 1 1


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Annexure-I

LIST OF MANDATORY SPARES


Substation Package-S1 under a) Common Transmission Systemassociated with Generation Projects inNagapattinam/Cuddalore Area, Tamilnadu (Project ID:206), b) Transmission System required for evacuation ofpower from Kudgi TPS of NTPC Ltd. (Project ID:403), c) Under System Strengthening in SR for import of powerfrom ER (Project ID:443). & d) Under Transmission System for connectivity for NCC Power Projects Ltd. (ProjectID:446)

Sl.No

Description Unit

Sa

lemP

S

Madhugiris/s

Nagap

attinamP

S

(G

IS)s/s

Bidad

i(GIS)s/s

NarendraNew

(Kudg

i)GISs/s

Kham

mams

/s

NagarjunaSagar

s/s

NellorePS

10. Pressure switches ( one

no. of each type )

Set 1 1 -- -- -- 1 1 1

11. Auxiliary Switch Assembly

(One no. of each type)

S

section- project_combined s1 pkg in sr

Documents