1. General Technical Specifications

GENERAL TECHNICAL SPECIFICATION FOR CONSTRUCTION Sl. No.

1.

Particular

Introduction

Detail R-APDRP is a Govt. of India initiative to renovate and modernize the electricity power distribution system of urban India in order to reduce the AT! losses and improve the "uality of power supply to the consumer. Detail$ o! t%e "or#$ in&ol&ed #upply$ transit stora%e$ erection$ testin%$ commissionin% of all ma&or and minor e"uipments' 1. '' #( $u)*$tation ( )ew **+,,  #ub #tations. ( Au%mentation of cap acity by re placin% the old or by providin% additional power transformer at e/istin% **+,,  #ub #tations. ( R  0 of e/istin% **+,,1 substations. ( Installation of !apacitor 2ans at **+,, 1 #ub #tations. 2. ''#( Line ( )ew overhead lines and under%round cables. ( 2ifurcation and Reconductorin% of e/istin% lines. '. 11+,.-'' #( $u)*$tation ( )ew ,,  #ub #tations. ( Au%mentation of e/istin% transformers. ( R  0 of e/istin% ,, 1 sub stations.

2.

Scoe o! "or#

-. 11#( Line ( )ew overhead lines and under%round and overhead cables. ( 2ifurcation and Reconductorin% of e/istin% lines. .

LT Line ( )ew lines from distribution transformers. ( 3/tension of e/istin% lines. ( Reconductorin% and stren%thenin% of e/istin% lines.

/. Aerial 0unc%ed Ca)le ( Installation of Aerial 2unched !ables in populated areas. . Caacitor 0a n#$ ( Installation of capacitor bans.

. Tr 4ounted n$!or5er$. ( olle3 Assembly andtra supply. T%e $coe $%all co&er co5lete in$tallation o! all e6ui5ent and acce$$orie$ co&ered under t%i$ contract.

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E7ecution

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0ill o! 8uantit3 90O8:

All the wors indicated above are to be carried out complete in all respect on Turney basis within the specified time. ,.

The "uantity of material re"uired for these wors has been described separately in the 2ill of 4uantity 52647 anne/ed with this tender document.

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Particular

Pre Tender Sur&e3 ; Site (i$it

Detail 8.

4uantities ind icated in the 264 are tentative. The act ual "uantities shall depend on the actual site conditions. Therefore the contractor shall procure the material only after ascertainin% the revised bill of "uantity$ approved by the !36. The payment shall be made accordin%ly.

*.

The additional "uantity of items which are mentioned in 264 shall be arran%ed by the contractor at unit rates %iven in price schedule.

9.

:owever some items which are not mentioned in 264$ may be re"uired essentially to complete the wors. These items shall also be arran%ed by the contractor and no e/tra amount shall be made on this account.

,.

It will be mandatory of the bidders to con duct pre tender survey of the sites and for that they should visit every proposed **+,, 1 #ubstation and other wors site  also see the tentative line routes to assess the "uantum of wor.

8.

To access the "uantum of wor before "uotin% the price bid$ tenderer shall contact respective #uperintendin% 3n%ineer+3/ecutive 3n%ineer of town who is desi%nated as !hief 3/ecutive 6fficer for R-APDRP.

,.

The contractor has to mae his own arran%ements for procurement$ supply and use of materials as per re"uirement.

8.

In procurement of these items the contractor shall follows all re%ulations of the ;PP!<+;P %ovt. + Government of India in respect of import license etc.$ if he chooses to procure these from imports.

Procure5ent o! 4aterial and E6ui5ent

=urther$ the contractor shall be responsible for the payment of applicable duties and ta/es$ port clearance$ inland transportation etc. *. 0anufacturers test certific ate for these mater ials shall be submitted and %ot approved by 3n%ineer of the contract$ before utilization. The materials so supplied by the contractor shall be %uaranteed as per addenda+corri%enda of =orm > A?.

.

Acce$$orie$

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This bein% a Turney contract$ successful installation$ commissionin%  inte%ration with e/istin% system$ of those e"uipment+accessories+material not specifically mentioned in the specifications$ shall be the responsibility of contractor. )o e/tra payment shall be made for these inherent wors.

8.

:e shall also supply all other associated e"uipment+ material+accessories not specifically mentioned in this tender specification but are re"uired for successful and trouble free operation of the e/ecuted wor as a whole. =or that no e/tra payment shall be made to the contractor.

*.

This also includes insulators$ cross arms$ hardware$ &umpers$ cable racs$ GI strips$ &unction bo/es$ lu%s$ clamps$ connectors$ earthin% rods$ hardware fittin%s$ an%les and

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Detail channels and all other unforeseen items whose prices are not indicated in the price schedule. 9.

!ontractor shall be supplyin% suitable size &umpers+ droppers+any other item$ needed for connectin% e"uipments with e/istin% e"uipments.

,.

The electrical e"uipments and materials re"uired durin% erection should be of hi%h standard. Technical features of these e"uipments and materials must conform to the technical specification %iven in this biddin% document. @herever the same is not specified$ it must conform to the relevant I.# for that material.

.

8.

0aterials conformin% to othe r international standards$ which ensure e"ual or hi%her "uality than the standards mentioned above$ shall also be acceptable. In case the bidders who wish to offer materials conformin% to other standards$ salient points of difference between standards adopted and specific standards shall be clearly brou%ht out in the respective schedule. =our copies of such standards with authentic 3n%lish version shall be furnished alon% with the offer.

*.

@henever a material or an ar ticle is specified or described by the name of a particular brand$ manufacturer or trade mar$ the specific item shall be understood as establishin% type$ function and "uality desired. Products of other manufacturers may also be considered$ provided sufficient information is furnished$ so as to enable the owne r to determine that the products are e"uivalent to those mentioned.

9.

0aterials supplied+used shall conform in all respects to th e relevant Indian #tandard #pecification with latest amendments there to.

Tec%nical Standard$

,. 8. *. 9. E. . E.

<.

8ualit3 A$$urance= In$ection ; Te$tin> 98A;I:

Title !ement #teel =asteners !oncrete mi/ R!! !able layin% and &ointin%

IS No. I# 8B I# CC*+,BC I# *B+,B8 I# ,*9* I# 9E I# ,8EE

Installation wor pertainin% to e"u ipment$ cablin% etc sho uld be in accordance with the applicable standards$ safety codes etc.

The ma&or e"uipments+material supplied by the contractor or its sub vendor has to be %ot inspected and tested by the 3n%ineers of the !orporation for its "uality and "uantity before dispatch to the wor site. The contractor shall have to follow the procedures laid down with this tender specification or any other procedure intimated later on. Rest of the e"uipments+ materials shall be checed at site for dimensions$ wei%hts$ finish and "uality. =or this purpose the contractor shall have to provide %eneral measurin% e"uipments

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Detail lie steel tape$ vernier calipers$ screw %au%e$ ton% tester$ earth resistance tester$ 8.E 1 me%%ar etc. The followin% items shall be inspected+tested manufacturers premises before dispatch' ,7 Transformers 87 ** 
Aroac%e$

11.

?ater And Po"er Sul3

12.

4en= 4aterial ; T;P

at

the

**PT **  Isolators All types of power cables TP06 D.6. fuse set Distribution Pillar 2o/ T0s Aerial 2unched conductors #T Poles !onductors Transformer trolley  connectin% system 2attery  2attery !har%er ,,  !apacitor 2ans  panels 0eterin% !ubicles ,,  out door type combined !T- PT me terin% unit with meter bo/. GI  G## wire Distribution 2o/es+1ioss used for tappin% the connection from Aerial 2unched conductor.
The approaches to site of wor$ if necessary$ shall have to be made by the contractor at his own cost so as to %et easy access for both personnel and e"uipments. The !ontractor has to mae use of the water supply if available at any of the substation site for construction purpose. :owever transport of water from the source to the worin% area will be contractor?s responsibility. It is essential that the contractor shall prevent misuse of wasta%e of water at all time$ failin% which necessary char%es will be collected from the contractor. In case$ water is not available at site$ the contractor has to mae his own arran%ement and any e/tra claim on account of this will not be entertained. Power re"uired for construction will be made available on demand at one point where feasible for which payment shall be made by the contractor. ,.

The contractor shall himself arran%e all men  ma terial$ all constructional T  P and any other material re"uired for successful and speedy e/ecution of the &ob within the prescribed time

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Detail 8.

All tools$ weldin% e"uipment$ crane$ scaffoldin%$ ri%%in% materials$ ladders$ consumables$ hardware etc. re"uired for installation shall be arran%ed by the contractor.

*.

The contractor shall provide e/perienced$ technically "ualified$ and supervisin% 3n%ineers for supervision. The contractor shall en%a%e only competent silled worers.

9.

The contractor shall observe strict adherence to the e/ istin% labour laws.

,.

It shall be the responsibility of the contractor to store$ move+transport from stores+stora%e yard etc.$ relevant items and accessories to the place of installation wherever necessary he will assemble all parts of e"uipment. In accordance with the specific installation instructions as directed by #ite 3n%ineer.

8.

The stores should be dismantled and site cleared after the wor is completed

,.

The contractor shall be responsible for ove rall co-ordination with internal+e/ternal a%encies$ pro&ect mana%ement$ trainin% of owner?s manpower etc. as re"uired.

8.

The supplier+ contractor shall open his office in that town and shall co- ordinate with concerned authorities of respective DI#!60 for all the matters pertainin% to the wors.

,.

All the wors covered under the scope of the tender shall be done in accordance with the norms defined in urban construction manual of ;PP!<$ unless the same is not specifically defined in the specification or with the provisions of Indian 3lectricity Rules+Acts+6ther Government Rules+Re%ulations as prevalent at the time of e/ecution of the &ob+wor.

8.

Installation shall be carried out strictly in accordance with the approved drawin%s 0odifications$ if any$ re"uired to suit site conditions$ shall be carried out only with the prior approval of the #ite 3n%ineer. All such chan%es shall be incorporated in As builtH drawin%s to be furnished by the contractor.

*.

Responsibility for succ essful installation of other e"uipment accessories$ purchased but not mentioned specifically above$ and their commissionin% shall be on contractor. =or all such items the contractor shall be supplyin% all material and e"uipment re"uired to accomplish the &ob complete in all respect.

9.

Installation wor per tainin% to e"uipment$ cablin%$ poles etc should be in accordance with the applicable standards$ safety codes etc.

E.

The contractors shall themselves be resp onsible for tim ely arran%ement+ procurement of all the raw materials re"uired for the manufacture of all tendered items by them+ their and + or by their vendors.

Site Stora>e+ Tran$ortation

1-.

Co*ordination

1.

Erection= Te$tin> and Co55i$$ionin>

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Detail .

@hile Repairin%  Replacin% the e"uipment$ if any other e"uipment %ets dama%ed due to ne%li%ent handlin% of the contractor the same shall be replaced by the contractor at his cost to the owner satisfaction. :e shall be responsible for dismantlin% of defective e"uipments$ there proper handlin% and shiftin%. Also he shall hand over the old  dismantled e"uipments+ material to the purchaser?s local stores or other sites as per instructions of the !36 for which no e/tra payment shall be made.

.

All char%es on acc ount of dama %es+losses+claims+thefts etc. involved under the conditions laid down above shall be borne by the contractor. It?s cost shall be recovered from his bills +security deposits +other assets.

F.

In order to avoid hazards to personnel movin% around$ the e"uipment such as Transformer$ !apacitor 2ans$ #witch%ears etc. if re"uired to be ept char%ed after installation till their commissionin%$ shall be cordoned off by suitable barriers to prevent accidental in&ury to personnel movin% around.

B.

@here the e"uipments+ assemblies are sup plied in mor e than one part$ the contractor shall mae all necessary mechanical and electrical connections between the sections. The contractor shall also do necessary ad&ustment in the ali%nments re"uired for its proper operation.

,C. !are shall be taen in handlin% instruments relays and other delicate devices where instruments and relays are supplied separately they shall be mounted only after the associated switch %ear+control panels are erected and ali%ned. ,,. Precaution@ The contractor shall e/ercise all possible care to avoid dama%e to public utilities e.%. water+ sewa%e pipes telephone and power lines+cable already e/istin%. In case of any accidental dama%e durin% the wor$ the contractor shall be responsible to repair+replace the same at his own cost$ and shall ensure that the purchaser is not put to any loss. ,8. The contractor shall have to provide proper li%htin%$ barricadin%$ si%nboards etc. at the wor site as a necessary precautionary arran%ement to avoid accident+ dama%e+ losses to the public +utilities+properties. ,*. Site Solution@ It may be possible due to some reasons or others that it would not be possible to wor as per the procedure. In such case+cases$ the solution to the problem shall be achieved by the !36 with the cons ultation of contractor$ and the contractor shall wor as per procedure proposed by the !36. #uch cases shall in variably be informed to the en%ineer of the contract for which no e/tra payments shall be made. ,9. Sace Con$traint$@ @hile e/ecutin% the &ob it is "uite

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Detail possible that some of the specified wor may not be carried out due to space+land+ other technical constraints etc. In such case the concerned 0D of DI#!60$ if re"uired$ may divert this wor at some other site or cancel the left over portions of wor. ,E. The contractor shall ensure that the e"uipment under erection as well as the wor area and the site are ept clean to the satisfaction of the 3n%ineer. In case$ the 3n%ineer is not satisfied about the cleanliness he will have the ri%ht to carry out the cleanin% operations and e/penditure incurred in

1/.

Ci&il ?or#$

,.

this re%ard will be to contractor?s account. Pacin% cases and pacin% materials shall be promptly cleared from sites. The contractor shall also be responsible for constructin% all the plinths  foundations and other switchyard structures  e"uipments. In case of any modification re"uired for these at e/istin% **+,,  substation$ the contractor shall carry out the necessary wor. The payment for all these activities shall be %overned by the price schedule under the head >3<3!TRI!A< @6R1#?. The complete wor mentioned in the spe cification shall be completed within completion period mentioned in #pecial !ondition of !ontract from the date of awardin% the contract. The survey of each and every site of the wor shall be completed within fifteen days time by the contractor.

1.

8.

The contractor shall estimate the actual "uantities of e"uipments + material re"uired to complete the wor to the full satisfaction of respective DI#!60 and as per ;rban !onstruction manual of ;PP!< and %et it approved from the !36. 5to be checed7

*.

The contractor sha ll sub mit the >P3RT? chart for complete e/ecution of wor at the time of si%nin% the contract a%reement as per completion schedule of contract.

Sc%edule o! "or# co5letion+ PERT C%art+0ar C%art

This P3RT chart shall include all the activities such as desi%n$ en%ineerin%$ submission and approval of drawin%s approval of vendors+suppliers$ procurement$ manufacturin%$ erection$ testin% and commissionin% plan. 9.

After placements of the orders wit h the manufacturer$ the delivery of e"uipments should be so re%ulated that it is received at the site nearly ,E days prior to its erection.

E.

The delivery of material+e"uipments bein% received at site $ should be strictly re%ulated with the schedule of its erection.

.

The payment of material shall be &ustified by the !36 with the physical pro%ress of the correspondin% wor. 5needs to be checed7

.

Precaution should be taen$ not to in crease the inventory of the owner without actually utilizin% it at the site for a lon% time.

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Detail

1.

''#( Su)*$tation

Ne" ''+11#( Su)*$tation

1.1

Scoe

Desi%n$ en%ineerin%$ supply$ transit stora%e$ supply$ erection$ testin%$ commissionin% of all e"uipments of a new ** substation of specified capacity on turney basis.

All the e"uipment complyin% to relevant technical specifications anne/ed hereafter shall have to be erected as per layout plan  drawin% to be submitted by the contractor and duly approved by the !36.

1.2

Dra"in>$ and La3out Plan

The drawin% of earth mat$ earthin% system$ the transformer plinths$ the foundations of all e"uipments  their support structure are to be approved by !36 and the construction wor shall be taen up by the contractor accordin%ly. The layout and placement plan of e"uipments in switchyard and in the control room is to be prepared by the contractor as per actual space available at site and also %et it approved by !36. ,. !hemical Pie earthin%s are %enerally used for earthin% of e"uipments at ''+11 #( $u)$tation$. 8. #imilar earthin% will be used for station transformer.

1.'

Eart%in>

*. All acce ssories associated with transformer and moun ted away from the main tan shall be connected to the station J earthin% %rid at minimum two points. 9. 3lectrode earthin% shall be connected with the subst ation earth mat.

1.-

Eart%in> S"itc%3ard

,. Desi%nin% the earth mat of the switchyard includin% diameter of the 0# Rod$ spacin% of the rods etc so that the specified value of the %round resistance 5as per I##+3337 in no case e/ceeds , ohm. 8.

*. The earth mat  earthin% wor  shall include layin% mes h$ fabrication and drivin% of 8ECC mm. lon% *8 mm diameter earth electrodes$ connectin% the same to the earth mat points of all the e"uipments installed in the outdoor as well as indoor and the fencin%. All the &ointin% shall be done by electric arc weldin%. 9. The earth mat mesh made of 0.#. 2ar shall be laid crisscross as per standard practice of R3##P6 applicable to the particular site and as per directives of representative of

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Detail respective DI#!60. E. The earth mat me sh should at least be C.E 0tr. below the mae up %round plinth level of switchyard. The earth electrodes shall have to be fabricated and driven into the %round upto its full len%th in the manner that its top$ is at least EC mm below the mae up %round + plinth leve l. These electrodes shall be properly &ointed with earth mat mesh by way of electric arc weldin%. .

All the $tructure$ o! t%e e6ui5ent$ )u$ )ar >antr3 and )od3 o! t%e tran$!or5er shall be connected throu%h 0.#. G.I. strip and connected to the earth mat mesh by electric arc weldin%.

. This 0.#.+ G.I. strip shall have to be suitably shaped$ bent and &ointed as per directive of site 3n%ineer of respective DI#!60 to %ive uniform shape above the %round level. . T%e 5i ni5u5 len >t% o! cont act o! t% e eart %in> $tri  and t%e e6ui5ent + $tructure $%ould )e 1,, 55. in len>t%. B.

The o"er tran$!or5er neutral shall be earthed throu%h independent pipe in pipe type earthin% and also &ointed independently with the earth mat throu%h 0.#.+ G.I. strip duly welded. These electrodes shall then be connected to independent 0.#. + G.I. strip riser over 0.#. An%le Iron support duly %rounded and connected to neutral of the transformer throu%h independent fle/ible copper bound of sufficient current capacity. The an%le and 0.#.+G.I. strip re"uired for transformer neutral earthin% shall also be bent + welded in proper shape as per directive of the site 3n%ineer.

,C. Tran$!or5er tan# shall be earthed at two places to the station-earthin% %rid. The transformer neutral terminal shall be connected to the horizontal e/tension of the vertically %routed %alvanized 0.#. steel an%le throu%h fle/ible copper bound strip of ade"uate cross section and size. The vertically %routed an%le frame in turn shall be solidly connected  welded to two pipe earth electrodes in the earth pit providin% ade"uate level of earthin% i.e. earthin% resistance below prescribed level. All accessories associated with transformer and mounted away from the main tan shall be connected to the station earthin% %rid at minimum two points. ,,. The !encin> shall also be connected with the main earth mat mesh by means of 0.#. + G.I. strips at an interval of ,C 0trs. 5Appro/.7. After main% &oints + weldin%$ each &oint shall be protected by coatin% the weld with molten bitumen. 1.

S"itc%3ard Structure

,. All the swi tchyard structures shall hav e to be fabricated as per R3##P6 manual of drawin% or firms drawin% approved by respective DI#!60.

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Detail If re"uired$ modification in the structure to match with the related e"uipment and %round level shall have to be carried out by the contractor. Any special structure if re"uired$ shall also be fabricated as per directive of the site 3n%ineer of R3#P3!TI3 DI#!60. The fabrication includes cuttin%$ bendin%$ drillin% and weldin% as per re"uirement and includes all associated incidental activities. No e7tra a35ent $%all )e 5ade !or all $uc% !a)rication "or#. 8. The ,, 1 cable &oint support structure is to be fabricated by the contractor for connectin% the cable to the transformer terminals in case of ,C 0A transformers this structure shall be desi%ned to hold two nos. * K *CC #". mm. #ize K
1./

''#( 0US 0AR

8. The strin%in% and sa%%in% of * Phase bus bar in the switchyard shall be done by the contractor as per approved drawin%. *. A!#R panther conductor$ all fittin%s$ Tee$ P.G. clamps insulatorsL stays are to be arran%ed by him without any e/tra payment.

1.

0u$*0ar$ Connector$ and Cla5$

,. The suitable size of aluminum connectors+ 2i-metallic connectors shall be used for main% connection to the e"uipment terminals. 8. The surface of the cla mps shall be smo oth with all ed% es rounded off. The Tee  P.G 5wed%e connector7. connectors shall be conventional type e/tra heavy-duty class tested. *. The connectors shall have ma/imum contact surface with the conductor$ e/tremely low and stable contact resistance and minimum power loss. 9. These shall maintain constant force within the connection for the life of the connector+ clamp while compensatin% for thermal e/pansion or %rip and increased life span. E. An 6/idation inhibitor shall be applied to the surface thereby elimination of o/idation of metallic surface. . The &umper T-clamp is re"uired for connection of drop down type sin%le conductor &umpers to bus bars and e"uipment. . The normal current carryin% capacity of clamp shall not be less than that specified in the specification. F. These connectors shall be used instead of the conventional PG and Tee clamp and shall be installed by powder actuated tool usin% cartrid%es with valid e/plosive license issued by Govt. of India +#tate Govt.

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Detail B. !lamps shall be corona free and shall carry an overload of at least 8CM over the rated current of 8EC A.

1.

Paintin>

All the steel structures shall be painted with Aluminium paint as per standard practice. The earthin% strips shall be painted with %reen enamel paint.

The batte ry and battery char%er alon% with D.!. and A.!. distribution board are to be erected in the sub-station control 1.<

0atter3 ; 0atter3 C%ar>er

room and are to be tested and commissioned. All A.!. and D.!. wirin% for the same is to be done by the contractor.

All the control and switch%ear panels are to be properly %routed$ erected at the prescribed locations in the control room as per approved layout. 1.1,

Control Panel$ and S"itc%>ear$

All the A.!. and D.!. connections are to be made complete in all respect. All the functions + system provided in these panels should be tested and commissioned by the contractor.

1.11

Control C a)le

The contractor shall be responsible to connect all protection and indicatin% devices of the transformer the control + relay panel in the control room includin% assessment of re"uirement of various size cables$ supply and layin% of re"uired size standard mae copper control cables properly dressed and ferruled. @hile carryin% our settin%s of various protection schemes$ contractor shall be responsible for protectin% cables a%ainst short circuits and earth fault etc. by suitably desi%nin%  placin% necessary protections.

The control cable trench and power cable trenches shall be constructed separately providin% proper cable racs. The control ca)le trenc%e$ shall be *CC mm. deep. It should 1.12

Control Ca)le Trenc%

1.1'

Po"er Ca)le ; Ter5ination it$

be ,EC mm. wide. These contr cable trenches shall have cable-supportin% racs made of ol0.#. strips. These trenches shall be covered with welded frame type trench covers of ECCmm. len%th. The size of control cable to be laid by the contractor shall be 8 core$ 9 core and  core of minimum 8.E s". mm. cross section

The ** 1 and ,, 1 * core K
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Detail #tation transformer shall be supplied$ erected and commissioned on the double pole structure of B.C mtr. or on the plinth of **+,,  substation in switchyards. The wor includes supply  erection of ,,+C.9 1 * A transformer$ double pole$ channels$ an%les$ GI pin with insulators$ ladder frame$ clamps with pacin% pieces$ nuts$ bolts off size includin% all the materials and the %routin%$ plinthin%$ paintin% etc. of double pole.

1.1-

Station Tran$!or5er

The transformer shall be ener%ized throu%h ,,  */*E s".mm. K
1.1

Control Roo5 0uildin>

The construction of main control room buildin% is also included in the scop e of wor under this tender. The control room buildin% shall be constructed as per norm of respective DI#!60. The land for switchyard shall be made available by respective DI#!60. The contractor shall be responsible for carryin% out civil wor in respect of plinths$ foundation  support structure related to the e"uipments$ and construction of cable trenches$ the cost of which shall be included in the cost of e"uipment "uoted by the contractor. Note: What about boundary and approach road etc?

1.1/

Li>%tin> The control room and the switchyard are to be illuminated ade"uately to have clear visibility at every point. ,. The switchyard and control room li%htin% shall be %overned by detailed technical specification %iven in the tender document. 8. !ontractor shall be responsible for calculatin% the number and type of li%ht fittin%s re"uired for achievin% sufficient visibility after tain% control room and switchyard size in consideration. The number and type of fittin%s shall be decided based on the switchyard area to be illuminated in consultation with Purchaser. *. !ontractor shall be responsible for supplyin% li%ht fittin%s and fi/tures$ layin% and terminatin% of the suitable power cable from the distribution board to the respective li%ht fittin%s. 9. In case a &unction bo/ is to be installed in the switchyard$ its supply$ erection includin% terminal blocs shall be to contractorNs account. E. In control room$ the illumination fittin%s and fi/tures shall be

Page | 12

Sl. No.

Particular

Detail so located that sufficient illumination is available in and around !R panels. . The concerned !36 has discretion to divert som e of the li%htin% fi/tures to other substation site if so re"uired. The contractor shall e/ecute the wor accordin%ly.

#upply of the followin% set of TP 5I#I mared if applicable7 at each of the **+,, 1 substations mentioned in 264' 6ne sample of these TP shall be submitted before supply to respective DI#!60 for approval. 6nly after %ettin% the approval of the sample TP shall be supplied. i.

1.1

Su)$tation T; P

!hain pulley blocs 9 Ton capable of liftin% upto ten feet. -, number ii. Tirfur capable of pullin% E Ton load.-, number iii. :and Gloves free size- 8 sets i&. , no. Tool 2o/ carryin%' pliers of different types$ set of various screw drivers$ wire stripers$ wire crimpin% tool of various sizes 59 s". mm. to 9CC s". mm.7$ slide wrench$ nose plier$ ratchet spanners of various sizes$ power operated drill machine$ power operated %rinders$ bo/ spanners$ various sizes and type of files$ he/as. Also one no. each of the followin% instruments of standard mae 0otwane+ 0eco+ Rien etc. a: 0otorized cum manually operated E v me%%er  di%ital multimeter ): Ton% tester capable of measurin% both D! and A! volta%es upto C.EM accuracy. It should measure A.!. upto ,9CC Amps. and its loop size should be lar%e enou%h to insert ,CC mm. dia cable in it comfortably. &: Torch of three cells. J 8 numbers. &i: #et of drill bits for metal and concrete J , set &ii: #lin%s of 8 meter and  meter sizes capable of carryin% E ton load. J , set.

All the e"uipments in the yard and control room$ includin% oil filled e"uipments$ are to be protected by portable fire e/tin%uishers. These fire e/tin%uishers are to be put at appropriate locations in and around control room and switchyard at specified locations. The "uantities of portable !68 and D!P type fire e/tin%uisher to be installed at one 1.1

Fire Fi>%tin> S3$te5

substation shall be %overned by detailed technical specification %iven in the tender document. The payment for the same shall be made as per price schedule. The contractor must "uote the refillin% char%es of the e/tin%uisher in the schedule of spares anne/ed in the tender documents. •

9 basets filled with stand and all basets filled with sand

R;4 OF EBISTING ''+11 ( SU0 STATION

Page | 13

Sl. No. 1<.

Particular ''#( Su)*$tation

Detail R;4 O! E7i$tin> ''+11 #( Su) Station ,. Desi%n of substation and R0 of asso ciated electrical  mechanical au/iliary systems includes preparation + modification of sin%le line dia%rams and electrical layouts$ erection ey dia%rams$ electrical and physical clearance dia%rams$ desi%n calculations for 3arth mat and Direct #troe
1<.1

Scoe =or erection of e"uipment involvin% new foundation and structure also$ the payment shall be %overned as per the rates indicated in 2ID PR6P6#A< #:33T. The number of items and places where the e"uipment need to be installed are only tentative and are %iven in 264. 9. 0atchin% of ali%nment and positionin% of the new e"uipments with the substation layout so that they may not foul with other structure. E. Re-orientation of 2us 2ar. . All the connections to bare conductor bus bar$ as per re"uirement$ includin% necessary clamps and connectors and their fi/in% + erection. . #upply of suitable size &umpers+droppers needed for connectin% the e"uipment with e/istin% e"uipments in the bay. F. Proper earthin% of all the e"uipments and their support structure and connectin% them to the main earth mat so as to meet overall safety criterion.

CAPACIT AUG4ENTATION OF ' '+11 ( SU0*STATIONS

Page | 14

Sl. No. 2,.

Particular ''#( Su)*$tation

Detail Caacit3 Au>5entation o! ''+11 #( Su)*$tation$ 1. 03 relacin> e7i$ tin> tran$!or5er "it% %i>%er caacit3 tran$!or5er.

2,.1

i.

The new transformers are to be preferably accommodated at the same foundation where previous transformer e/isted or new plinth to be constructed by the contractor at the place havin% appropriate load bearin% capacity.

ii.

!hecin% of the physical dimension available$ at each e/istin% sub-station and desi%n the **+,,  transformers accordin%ly so that it can fit into the available space 5of older transformer7. !ontractor must also ensure that all statutory clearances are met in case the desi%n of the transformer tan is chan%ed.

Scoe

iii. Removin% of e/istin% lower cap acity transformer from its foundation and commissionin% the same at another location in the circle as re"uired. iv. If transformer is transported without oil then assembly  erection of the transformer includin% its accessories$ fillin% of oil into the transformer which was separately transported to site in drums after proper filtration  testin% of the oil. ,. 2efore tain% up of the Au%mentation &ob of **+,,  substation$ contractor shall discuss with the en%ineer to finalize the se"uencin% of the tain% up of au%mentation of capacity of **+,,  transformers. 2,.2

Se6uencin> o! "or# 8. The preferred se"uence shall be to start with the au%mentation e/ercise at the places where new ,C 0A$ **+,,  transformers are to be installed.

2,.'

Po"er Ca)le

2,.-

Control R ela3 P anel ; Control Ca)le

#upply and proper layin% the power cables from control room to the transformer 5if they are non-e/istent or dama%ed7 either throu%h e/istin% cable trenches or the trenches to be constructed by the contractor.

,.

To develop the desi%n  drawin% of foundation and cabinet for housin% all control  relay e"uipment and to obtain the approval for the same from owner.

8. To access$ re"uirement of control cables 5various sizes7 its supply and layin% re"uired for e/tendin% it from !R panel to various e"uipments. =or that whatever hardware contractor envisa%es includin% terminal blocs and cable %lands$ shall be in the scope of contractor. *. !R panel should use 89 olt as con trol and pro tection au/iliary volta%e. !ontractor shall be responsible for supplyin%$ layin% and commissionin% of control cable from 89 olt distribution panel to !R panel. 9. To arran%e 89C volt au/ iliary supply of 89C volt EC :z$ for illumination$ li%htin% and heatin% of !R panel from the A!

Page | 15

Sl. No.

Particular

Detail distribution board includin% supply of cables  connectors etc. E. !ommissionin% of the !R panel includin% interlocin% with isolator$ remote indication$ open and close operation. ,. #upply and layi n% of suita ble sized power cable$ its clam ps and connectors in order to connect battery and battery char%er to D! distribution board. 8. 2attery ban and battery char%er of 89 olt 8CC A: capacity.

2,.

2lt DC C%ar>er 0atter3 and(o 0atter3

*. #upply$ layin% and commissionin% of ,-Phase 89C volt. Power cable from A! distribution board to battery char%er for Power input to the 2attery char%er. 9. ;se of e/istin% trench if available or else to mae way of layin% power cable to battery char%er. ,. Desi%n and drawin% of modules includin% their foundation drawin%s$ for fi/in % the modu les 5bot h I+!  6+G7 in the module space$ or in the space created by the contractor. 8. Ali%nment of the e/istin% bus bars and the proposed I+! and 6+G modules of the new !ircuit 2reaers must match the e/istin% bus bar and switch%ears.

2,./

11#( I+C and O+G Circuit 0rea#er 4odule$

*. #upply and lay in% ade"uate siz es of * phase ** K

2,.

Li>%tin> Arre$tor 911#( Ratin>:

,,
2,.

Fire Fi>%tin> S3$te5

,. All the e"uipments in the yard and control room$ includin% oil filled e"uipments$ are to be protected by portable fire e/tin%uishers. These fire e/tin%uishers are to be put at appropriate locations in and around control room and switchyard.

Page | 16

Sl. No.

Particular

Detail 8. !alculation of the number and type of fire e/tin%uishers re"uired for coverin% fire hazard of control room$ switch yard$ oil filled e"uipments and cable trenches shall be approved by !36. *. #upply of fire e/tin%uisher for tain% care of different cate%ory of fire hazards 9. #upply of the fire e/tin%uisher shall be paid as per the provisions of the 2ID PR6P6#A< #:33T. =or refillin% the e/tin%uishers the payment shall also be %overned as per the rates indicated in 2ID PR6P6#A< #:33T. The Portable !68 and D!P type fire e/tin%uisher shall be %overned by detailed technical specification %iven in the tender document. ,. The control room and the swi tchyard are to be illu minated ade"uately to have clear visibility at every point. 8. To calculate the number and type of li%ht fittin%s re"uired for achievin% sufficient visibility after tain% control room and switchyard size into consideration. The number and type of fittin%s shall be decided based on the switchyard area to be illuminated in consultation with !36 concerned.

2,.<

Li>%tin>

*. In case contractor wishes to use e/istin% mountin%s 5if found any7$ in that case if any modification + alteration re"uired shall be to contractor?s account. 9. #upply of li%ht fittin%s and fi/tures$ layin% and terminatin% of the suitable power cable from the A! distribution board to the respective li%ht fittin%s. E. In case a &unction bo/ is to be installed in the switchyard$ its supply$ erection includin% terminal blocs shall be to contractor?s account. . In control room$ the illumination fittin%s and fi/tures shall be so located that sufficient illumination is available in and around !R panels.

2,.1,

Eart%in> o! t%e $u)* $tation

,. Desi%nin% of the earth mat of the switchyard includin% diameter of the 0# rod$ proposed to be used$ spacin% of the rods etc so that the specified value of the %round resistance 5as per I#+I3337 can be achieved. The value of earth mat resistance in no case should e/ceed , ohm. In case the desired results are not achieved$ a new earth mat after removin% older earth mat has to be laid. !ost for the same shall be borne by contractor. 8. Desi%nin% of the electrode earthin% of the
Page | 17

Sl. No.

Particular

Detail *. 6n checin% of the earth pit res istance of the tran sformer$
2,.11

Su) Station T;P

As %iven at 1.1 above ,. All civil wors lie foundation  support structure related to the e"uipments bein% supplied. In case of e/istin% civil wors at **+,,  substation$ any chan%e + modification felt necessary by the en%ineer$ shall be %ot e/ecuted and the cost for the same shall be included in the e"uipment price "uoted.

2,.12

Ci&il ?or#

8. The olde r construction includin% debris$ wherever re"uired has to be removed. *. Desi%nin% of the all suc h civil wor s includin% construction drawin%s which are to be approved by the owner. 9. R3##P6+;rban schedule for civil wor will be applicable

2,.1'

0u$*)ar$= Connector$ and cla5$

As %iven at 1. above

Page | 18

GENERAL SPECIFICATION FOR CONSTRUCTION OF ''&+11&+CO4POSITE+LT LINES: Sl. No.

Particular

Detail ,.

2efore tain% up the line construction wor the co ntractor shall verify the proposed line route by &ointly surveyin% with the representative of the concerned !36.

8.

The e/act spottin% of the sin%le and multiple structures have to be finalized byTopo%raphical the contractor in consultation the concernin% !36. maps of the surveywith of India shall not be provided for this purpose.

1.

2.

Sur&e3 and Pole Sottin>

San

*.

The final schedule ind icatin% location of poles$ an% le of deviation$ road crossin% and other details shall be submitted for the approval to the concerned !36+ #.3. 5D7$ 3;D!+3D!.

9.

After approval the con tractor shall submit four more sets of the approved reports alon% with one set of reproducible of final profile drawin% to the 3n%ineer of the !ontract for record purpose.

,.

The span of the line for ** and ,, shall be EC to C 0.

8.

#pan in cas e of composite line 5,, and
*.

#pan in case of
Ri>%t o! ?a3

Ri%ht of way and necessary way leave clearance shall be arran%ed by the contractor on behalf of respective DI#!60 in accordance with the wor schedule. The contractor will arran%e to secure way leave and Ri%ht of way in the restricted area with the help of R3#P3!TI3 DI#!60. An3 e7end iture to )e incurred $%all )e )orne )3 t%e contractor.

-.

Road Cro$$in>

At all important road crossin% the poles shall be fitted with Disc type insulator but the %round clearance at the roads under ma/imum temperature and in still air shall be such that even with conductor broen in ad&acent span$ %round clearance of the conductor from the road surface will be as per I3 rules,BE as amended from time to time and proper cradle %uardin% to be provided across the road.

.

Rail"a3 Cro$$in>

'.

At the time of route survey$ the railway crossin%s shall be finalized as per the re%ulation laid down by the Railway Authorities. The followin% are the important features of the prevailin% re%ulations 5revised in ,BF7' 5i7

5ii7

The crossin% sh all normally be at ri% ht an %le to th e railway trac. )o crossin% shall be loca ted over a boos ter transformer$ traction switchin% station$ traction substation or a trac

Page | 19

Sl. No.

Particular

Detail cabin location in an electrified area. The approval for crossin% railway trac shall be obtained by the !ontractor from the Railway Authority on behalf of respective DI#!60. The letter to this re%ard shall be obtained by the !ontractor from officer concerned of respective DI#!60 and e/penditure thereof will be paid by the contractor. @here line is to cross over another line of the same volta%e or lower volta%e. Provisions to prevent the possibility of its comin% into contact with other overhead lines shall be made in accordance with the Indian 3lectricity Rules$ ,BE as amended from time to time. All the wors related to the above included in the scope of the modifications are re"uired in the bein% crossed. In such cases$ conditions a%reed upon.

proposal shall be deemed to be contract e/cept in case$ if line below or above$ the line wor shall be done on the

The an%le of crossin% shall be as near to BC de%ree as possible. :owever$ deviation to the e/tent of *C de%ree may be permitted under e/ceptionally difficult situations.

/.

Po"er Line Cro$$in> and Tele co55unication line cro$$in>

Also$ in the crossin% span$ power line support will be as near the telecommunications lines as possible$ to obtain increased vertical clearance between the wires. @hen the an%le of crossin% has to the below C de%ree the matter will referred to the authority in char%e of the telecommunication system. The contractor shall obtain the letter from of respective DI#!60 and permission of telecommunication authority shall be obtained by the contractor on behalf of respective DI#!60. 0ethods ensurin% that normal services may not be interrupted nor dama%e caused to property shall be used durin% strin%in% operations$ where roads$ channels$ telecommunication lines$ power lines and railway lines have to be crossed. :owever shut down shall be obtained when worin% at crossin%s of overhead power lines.

.

Clearance !ro5 Ground= 0uildin>= Tree$ etc.

,.

@hile constructin% the **  ,,  lines on roadside havin% inade"uate electrical clearances between pole  buildin%s the feasibility of fi/in% pro&ected bracet fabricated by suitable size of 0.#. An%le  !hannel with its supportin% bracin% on the e/istin% poles may be e/plored. In case it becomes feasible$ the line may be erected on fittin%s  insulators to be fitted on such bracets. The cost of these bracets shall be char%ed as per the prices "uoted in the relevant column of price schedule.

8.

!learance from %round$ buildin%$ trees and tel ephone lines shall be provided in conformity with the Indian 3lectricity Rules$ ,BE as amended upto date.

*.

Any way leave which may be re"uired by the contractor shall be arran%ed by him on behalf of respective DI#!60.

Page | 20

Sl. No.

.

Particular

Detail 9.

Payment of compensation if any towards the clearance etc. will be the responsibility of the contractor.

,.

The contractor is re"uired to follow local statutory re%ulations stipulated in 3lectricity 5#upply7 Act ,B9F$ Indian 3lectricity Rules ,BE$ or as amended and other local rules and re%ulations referred in this specification.

8.

The codes and+ or standard referred to in the sp ecifications shall %overn. #uch codes and+ or standard$ referred to shall

Statutor3 Re>ulation$ And Standard$

mean the interest revisions$ amendments$ chan%es adopted and published by the relevant a%encies unless otherwise indicated. *.

6ther internationally accepted standards which ensure e"ual or better performances than those specified shall also be accepted$ sub&ect to prior approval by the !36$ respective DI#!60.

,. The pits are e/cavated in the direction of line as this facilitates erection of pole in addition to %ivin% natural stability. The depth of pit should be the ,+ of the hei%ht of respective pole in all type of soil laterite + hard roc and E cm bein% in the direction of line. The size of stone pad should be *CC/*CC/E mm.

<.

Erection o ! ole$

E.

The pole is to be erected in ali%nment with utmost care and the e/cavated earth should be bac filled properly by rammin% and concretin% in the ratio of ,'9'F concretin% is to be measured separately.

.

!oncretin% of the support is to done as per relevant drawin% enclosed$ by a mi/ture of ,'9'F 5by volume7. The size of the pole plinth is ept as 9EC/9EC mm and hei%ht *CC mm above %round level as per drawin%. The top ,CC mm is ept tapered so that no rainwater %ets accumulated on the top. The under%round portion of the concretin% shall be 9EC mm / 9EC mm / depth of plantation of support.

.

3very pole of ne w line is to be properly %ro uted by the contractor and plinth be made around it as per as per ;PP!< norms. All the fittin%s$ cross arms$ insulators and stays are to be properly fitted+ erected by the contractor.

1,.

In$ulator Fi7in>

Pin Insulators shall be used on all poles and disc Insulator on an%le and dead end poles. Dama%ed insulators and fittin%s$ if any$ shall not be used. Prior to fi/in%$ all insul ators shall be cleaned in a manner that will not spoil$ in&ure or scratch the surface of the insulator$ but in no case shall any oil be used for that purpose. Tor"ue wrench shall be used for fi/in% various line materials and components$ such as suspension clamp for conductor$ whenever re"uired.

11.

Eart%in>

,.

3ach and every pole of the new **+,,  line and every third pole of
Page | 21

Sl. No.

Particular

Detail 8ECCmm/8C mm dia 0# earthin% rod. 8.

The cost of the same shall be included in the price "uoted for poles+supports as per standard practice of ;PP!<. Detailed drawin% no. DD#6-8 are enclosed.

,.

#trin%in% and sa%%in% of the conductor and earth wires shall be done properly by the contractor so that all poles remain erected vertically and no insulator is tilted. Proper bindin% of conductor on the insulators and proper ti%htenin% of the nut bolts of the cross arms$ bracin%s$ %uardin% an%le and clamps must be ensured by the contractor.

12.

1'.

1-.

8.

It Includes spreadin% of conductors without any dama%e and strin%in% with proper tension without any ins+dama%e includin% bindin% of conductor at pin points$ &umperin% at cut points etc.

*.

The strin%in% of the conductor shall be done by the standard strin%in% method.

9.

The contractor will di scuss with the concerned !36+#3 5D7$ 3;D!-3D! for the strin%in% methods he proposes to follow and obtain their consent to startup the wor.

E.

!onductors or earth wires shall not be allowed to han% in the strin%in% blocs for more than B hours before bein% pulled to the specified sa%.

,.

!onductor and earth wire accessories shall be installed by the contractor + earthwire clampin%. @hile installin% the conductor as per the desi%n re"uirement within 89 hours of the conductor and earthwire accessories.

8.

After installin% the cond uctor and ea rthwire$ its acc essories shall be installed within 89 hours.

*.

Proper care shall be taen to ensure that the surfaces are clean and smooth and that no dama%e occurs to any part of the accessories or of the conductors.

Strin>in>

Fi7in> o! Conductor$ and Eart% ?ire Acce$$orie$

Handlin> O! Conductor And Eart%"ire

,. The contractor shall be entirely responsible for any dama%e to the pole or conductors durin% strin%in%. The conductors shall be run out of the drums from the top in order to avoid dama%e. 8. A suitable brain% device shall be provided to avoid dama%in%$ loose runnin% out and inin% of the conductors. !are shall be taen that the conductors do not touch and rub a%ainst the %round or ob&ects$ which could scratch or dama%e the strands. *. The se"uence of runnin% out shall be fro m the top to down . i.e. the top conductor shall be run out first$ followed in succession by the side conductors. ;nbalanced loads on poles shall be avoided as far as possible. @herever applicable$ inner phase of line conductors shall be strun% before the strin%in% of the outer phases is taen up.

Page | 22

Sl. No.

Particular

Detail 9. @hen lines bein% ere cted run parallel to e/ist in% ener%ized power lines$ the contractor shall tae ade"uate safety precautions to protect personnel from the potentially dan%erous volta%e build up due to electroma%netic and electrostatic couplin% in the pullin% wire$ conductors and earth wire durin% strin%in% operation. E. The conductor shall also tae ade"uate safety precautions to protect personnel from potentially dan%erous volta%e build up due to distant electrical storms. . The conductor shall be continuously obse rved for loose or broen strands or any other dama%e durin% the runnin% out operations. . Repair to conductors$ if necessary$ shall be carried out with repair sleeves. F. Repairin% of the conductor surface shall be carried out only in case of minor dama%e$ scuff mars$ etc$ B. The final conductor surface shall be clean$ smooth and free from pro&ections$ sharp points$ cuts$ abrasions etc.

1.

Relace5ent conductor

1/.

ointin>

o!

If any replacement is to be effected after strin%in% and tensionin% or durin% maintenance e.%. replacement of cross arms$ the conductor shall be suitability tied to pole at tension points or transferred to suitable roller pulleys at suspension points. ,. @hen approachin% the end of a drum len%th$ at least thr ee coils shall be left in place when the strin%in% operations are stopped. These coils are to be removed carefully$ and if another len%th is re"uired to be run out$ a proper &oint shall be made. 8. !onductor &oints shall not crac or otherwise be susceptible to dama%e in the strin%in% operation. The !ontractor shall use only such e"uipment +method s durin% conductor strin%in% which ensure complete compliance in this re%ard. *. All the &o ints on the cond uctor and ea rthwire shall be of the compression type$ for which all necessary tools and e"uipment lie compressors$ dies$ etc. shall be obtained by the !ontractor. 3ach part of the &oint shall be cleaned by wire brush till it is free of rust of dirt$ etc$ and be properly %reased with anti corrosive compound. If re"uired and as recommended by the manufacture$ before the final compression is carried out with the compressors. 9. All the &oints shall be made at least *C meters away from the pole. )o &oints or splices shall be made in spans crossin% over main roads$ railways and small river spans. )ot more than one &oint per conductor per span shall be allowed. The compression type fittin%s shall be of the self-centerin% type$ care shall be taen to mar the conductor to indicate when the fittin% is centered properly.

Page | 23

Sl. No.

Particular

Detail Durin% compression or splicin% operation' The conductor shall be handled in such a manner as to prevent lateral or vertical bearin% a%ainst the dies. After compressin% the &oint the aluminum sleeve shall have all corners rounded$ burns and sharp ed%es removed and smoothened. E. Durin% strin%in% of cond uctor to avoid any dama %e to the &oints the contractor shall used suitable protector for mid span compression &oints in case they are to the passed over pulley blocs aerial roller. The pulley %roove size shall be such that the &oint alon% with protection can be passed over it smoothly. ,. The tensionin% and sa%%in% shall be done in accordance with the approved wor pro%ramme by !36+#3 5D7$ 3;D!-3D!. The conductors shall be pulled up to the desired sa% and left in runnin% blocs for at least one hour after which the sa% shall be recheced and ad&usted$ if necessary$ before transferrin% the conductors from the runnin% bloc to the suspension clamps.

1.

Ten$ionin> And Sa>>in> Oeration$

8. The sa% will be checed in the first and the last section span for section upto ei%ht spans$ and in one additional intermediate span for section with more than ei%ht spans. The sa% also be checed when the conductors have been drawn up and transfered from runnin% bloc to the insulator clamps. *. At sharp ver tical an%le$ conductor and eart hwire sa%s and tensions shall be checed for "uality on both sides of the an%le and runnin% blocs. The suspension insulators assemblies will normally assumed verticality when the conductor is clamped. 9. Tensionin% and sa%%in% operation shall be carried out in calm weather when rapid chan%es in temperature or not liely to occur.

1.

1<.

,.

!lippin% of the conductor into pos ition shall be do ne in accordance with the manufacturerNs recommendations.

8.

umper at section and an %le po les shall be formed to parabola shape to ensure ma/imum clearance re"uirements.

*.

=asteners in all fit tin%s and accessories shall be secured in position. The security clip shall be properly opened and sprun% into position.

Cliin> I n

''#( Guardin>

1. •

•

2.

Guardin> alon> t%e line Two numbers parallel GI wires #@G 5%uardin% wires7 shall run below the conductor and shall be supported on 0.#. an%le of prescribed size. !ross lacin%s of GI wire F #@G shall be provided at every 9 0. interval throu%hout the crossin%s. The cross wires+ lacin%s shall be bent in ; shape and their ends shall be clamped with the parallel %uard wires by proper bindin%. Guardin>

acro$$

t%e

road

cro$$in>+electric

Page | 24

Sl. No.

Particular

Detail line$+teleco55unication line 9a$ Cradle >uardin>: •

•

=ive numbers parallel GI wires #@G 5%uardin% wires7 shall run below the conductor and shall be supported on 0.#. an%le of prescribed size. !ross lacin%s of GI wire F #@G shall be provided at every C. 0. interval throu%hout the crossin%s. The cross wires+ lacin%s shall be bent in ; shape and their ends shall be clamped with the parallel %uard wires by proper bindin%.

1. Guardin> alon> t%e line Two parallels GI wires #@G 5%uardin% wires7 shall run below the conductor and shall be supported on 0.# an%le of prescribed size. •

•

•

11#( Guardin>

2.

!ross lacin%s of GI F#@G wire shall be provided at every , m interval throu%hout the crossin%. Guardin% shall be erected with %round  line clearance as per the I.3. rules. Guardin> acro$$ t%e road cro$$in>+electric line$+teleco55unication line 9a$ Cradle >uardin>:

•

=ive parallels G.I. wires #@G 5%uardin% wires7 shall run below the conductor and shall be supported on 0.# an%le of prescribed size.

•

•

21.

Final C%ec#in>= Te$tin> and Co55i$$ionin>

!ross lacin%s of G.I. F#@G wire shall be provided at every , m interval throu%hout the crossin%. Guardin% shall be erected with %round  line clearance as per the I.3. rules.

After completion of the wors$ final checin% of the line shall be carried out by the contractor to ensure that all foundation wors$ pole erection and strin%in% have been done strictly accordin% to the specifications and as approved by the concerned !36+#35D7$ 3;D!-3D!. All the wors shall be thorou%hly inspected in order to ensure that. a. #ufficient bacfield earth covers each foundation pit and is ade"uately compacted' b. All poles are used strictly accordin% to final approved drawin% and are free of any defect or dama%e whatsoever. c. The strin%in% of the conductors and earth wire has been done as per the approved sa% and tension and desired clearance are clearly available. d. All conductor and earth wire accessories are properly installed. e. All other re"uirement for completion of wors such as fi/in% of dan%er plate and anti-climbin% device 52arbed wire7 have been fulfilled. f. @herever re"uired$ the proper revetment 5erosion protection7 is provided. %. The insulation of the line as a whole is tested by the

Page | 25

Sl. No.

Particular

Detail contractor throu%h provision of his own e"uipment$ labour etc$ to the satisfaction of the 6wnerL h. All poles are properly %routed. i. The line is tested satisfactorily for commissionin% purpose.

Sa!e u #ee tran$ortation 22.

and o!

di$5antled 5aterial to $tore$

All dismantled material e.%. conductor$ insulator$ poles etc. re"uires proper handin% and stacin%. Dismantled conductor must be re-rolled on the wooden drums to avoid any dama%es. All such dismantled materials may be safely transported to respective DI#!60 store and handled over to the authorized representative of respective DI#!60.
DETAILS OF O(ERHEAD LINE 4ATERIALS

Page | 26

Sl. No.

Particular

Detail ''#(@ ,. The **  line shall nor mally be constructed on pin insu lators and ,, m lon% #teel Tubular Poles 59,C-#P-EE7+ Bm. lon% P!! poles usin% A!#R Do% conductor. 8. In some case s ** line shall be constructed on suspension insulators on ,* m. #TP 5#P-87 usin% A!#R Panther conductor for which cross arms of 0.#. channel ,8E/E mm shall be used.

1.

Pole$ *. :owever every road crossin% shall essentially be done on ,* mt. lon% #TP 5#P-87 poles in case the line is constructed on ,, m #T poles  on ,,m #TP in case the line is constructed on P!! pole 11#(@ ,, line shall normally be constructed on ,, mtr. lon% steel poles 59,C- #P-EE7 or B+F.E mtr. lon% P!! pole

2.

,.

Ade"uate number of sta ys shall have to be pro vided on the an%le support$ section and terminal supports to balance the sideward pull.

8.

=or that stay sets or st rut stays as sui table shall have to be provided by the contractor as per standard norms of respective DI#!60.

*.

The stay sets shall comprise GI stay rod$ GI anchor plate$ stay wire$ turn bucles$ brea insulators and stay clamps.

9.

#tay of size 8C/,FCC mm with +9.C mm G## stay wire shall be used in '' ( line$ supports wherever re"uired.

E.

#tay of size ,/,FCC mm with +*.,E mm G## stay wire shall be used in 11 ( line$ supports wherever re"uired.

.

G.#.#. wires shall comply for solid wire 5as per I.#.7

Sta3 Set$

,. The wire sha ll be drawn from mild steel rods. The %eneral re"uirement relatin% to G.I. wire shall be laid down in latest version. 8. The size of G.I.tensile @ire shall be Eof mm and %f+mm8. *.,E mm with of Q8.EM and stren%th *8-EE The tolerance wires shall be %alvanized with heavy coatin% as per I#' 9F8. '.

G.S.S ?ire$

*. The wire shall be circ ular and free from side irre%ularities$ imperfection$ flaws$ splits and other detects. The zinc coatin% shall conform to heavy coatin% as laid down in latest version of I#' 9F8 and shall be smooth$ even and bri%ht. 9. The stranded wire shall be of %rade. >A? havin% minimum tensile stren%th of C 1%f+ mm8. The specific technical particulars of G.#.#. wire arc'

-.

Sta3 Rod G.I. stay rod of size ,FCC / 8C mm with stay wire +9 mm should

Page | 27

Sl. No.

Particular

Detail be provided on ** 1 line supports whereas GI stay rod at size ,FCC / , mm with stay wire +*.,E mm should be provided on ,, 1+
.

/.

Turn 0uc#le

Conductor

,.

Turn bucle with eye bolts for ** 1 +,,1 line conformin% to the followin%.

8.

6ne no of turn bucle made out of 88 mm dia G.I. rod and E / E / mm 0.# an%le.

*.

6ne eye bolt made of 88 mm di a G.I. rod with 9C mm in ner dia. eye to eye threaded upto *CC mm len%th from the other side.

9.

Two nos. GI nuts su itable for the threaded portion of eye bo lt material specification I#-88+ 5tested "uality7.

,.

Prescribed siz e of con ductor sha ll be used to construct * phase * wire **  lines. in case of ** line$ are %enerally A!#R Do% and Panther.

8.

Prescribed siz e of con ductor sha ll be use d to con struct * phase * wire ,,  lines. In case of ,,$ A!#R Do%+Raccoon conductor are used for main lines and A!#R @easel+Rabbit conductor for the tappin% lines meant for feedin% the DT substations.

,. The steel -type cross arm of 0# channel ,CC/EC/ mm shall be used for ** 1 line on Do% conductor and ,, 1 line on Raccoon  Do% !onductor. .

Cro$$

Ar5$

!or

&ariou$ conductor$

8. In case of ,, 1 line on @easel  Rabbit !onductor 0# an%le of E/E/ mm shall be used to fabricate the cross arms. *. The center-to-center hole for ** 1  ,, 1 cross arms shall be ,E8E mm and ,CC mm respectively. Steel c%annel + An>le caa)le o! )earin> "or$t loadin>$ Sin>lePole@

?ea$el= Ra))it E/E/ mm 0.#. ,, 1 ,, 1
Dou)lePole@ ,CC/ECKmm$ 0#. channel 5.B1%+07 cross arm$ ,8E/Emm$ 0.#. channel 5,C. 1%+07

Page | 28

Sl. No.

Particular

Detail

 <.T. !60P6#IT 0AI)#

channel 5.B 1%+07 - type cross arm

Raccoon= Do> **1
,CC/EC/ mm 0.#. channel 5.B1%+07 **1 -type cross arm$ as per

!ross arm

,8E/Emm$ 0.#. channel 5,C.1%+07 cross arm

#ection' ,EC/E mm. 0.#. channel 5,9.9

.

Pant%er **1
,8E/E 0.s. channel mm 5,C./1%+07 ** 1 - type cross arm$

1%+07 cross arm Terminal ' ,EC/E mm$ 0.#. !hannel 5,9.91%+07 cross arm

Acce$$orie$

3very new support shall be provided with pole nameplate$ dan%er plate and barbed wire wrapped at prescribed hei%ht up to BCC mm len%th 5Anti climbin% device7 in accordance with the respective DI#!60 drawin%s. ,. The D.P structure material should be after complete fabrication includin% drillin% of holes etc. 8. All the horizontal members of the D.P. structure material should be mounded with suitable clamps and nut bolts with the re"uired clearance as I3. Rule ,BE. *. D.P. #tructures material also comprises of9a: 9i: '( line Dou)le Pole@ Top channel of size ,8E/EK mm 5,C.%+ 0eter7 havin% len%th of *8CC mm.

<.

D.P. Structure

9ii: 11( line Dou)le Pole@ Top channel of size ,CC/ ECK mm 5.B %+ 0eter7 havin% len%th 889C mm. 9): 9i: ''( Li ne Do u)le Po le@ 2racin% two number of 0.#. An%le E/E/mm to be fi/ed by , mm dia bolt with suitable washer as per enclosed drawin%. 9ii:

11( Line Dou)le Pole@ 2racin% two number of 0.#. An%le Iron E/E/ mm to be fi/ed by , mm bolt with suitable washer as per enclosed drawin%.

,. 2oth in case of ** and ,, linesL 1,.

In$ulator$

11.

Pin$

Pin insulators re%ular pole. of appropriate stren%th shall be used in case of 8. !ombination of Disc and Pin ins ulator shall be used$ in case of section support. *. #hacle insulator shall be used in case of
12.

F )rac#et

1'.

Dan>er 0oard$

=or **1 supports' 0ade of 0.#. =lat of size C /  mm should be provided as per drawin%. ii7 =or ,,1 supports' 0ade of 0.#. =lat of size EC/9 mm should be provided as per drawin%. ,. The dan%er 2oard shall be provided as per #0! material.

Page | 29

Sl. No.

Particular

Detail Drawin% of Dan%er 2oard of ** 1 line shall be as of ,, 1 line Dan%er 2oard e/cept displayin% **$CCC volts in place of ,,CCC volts. The thicness of plate for dan%er 2oards shall be of 8 mm 5,9#@G7. The dan%er boards shall be as per I#' 8EE, and duly enameled and fi/ed with proper clampin% arran%ement. 8. The letter fi%ures and the conventional sull and bones of dan%er boards shall conform to I#' 8EE, and shall be in a si%nal red on the front of the board. *. The corners of the dan%er board shall be rounded off to remove sharp ed%es.

1-.

Anti* cli5)in> De &ice$

1.

8uantitie$

GI 2arbed wire 5Anti-climbin% device7 shall be provided and installed by the !ontractor on all poles as per drawin% enclosed as Anne/ure - E$ $   F. The barbed wire shall conform to I#8F 5Grade A,7. The barbed wires shall be %iven chromatin% dip as per procedure laid down in I#' ,*9C. The 2arbed @ires should be wrapped on the poles at the specified hei%ht shown in the drawin% upto len%th of BCC mm. ,. The provisional "uantities of re"uired poles$ concrete$ e/cavation volume for foundation and other items are %iven in Technical #pecification+Price schedule. :owever the wor shall be e/ecuted as per approved construction drawin%s. 8. Ce5ent Concretin>@ !ement !oncrete in the ratio ,'9'F by volume 5, parts of the cement$ 9 part of the sand and F parts of the concrete7 is to be used for concretin% of poles  muffin% property curved. *. The "uantities of ear th wire accessories indicated in 264 are tentative and actual "uantity will depend upon final survey 5chec survey7. Payment for contractor supplied line materials shall be made for the "uantities incorporated in the wors. 9. Per5itted E7tra Con$u5tion o! Contractor Sulied 4aterial@ The !ontractor shall not be re"uired to return to the respective DI#!60 cable conductor drums and shall dispose of the same at his hand. E. All those materials re"uired for construction  erection of the lines$ whose prices have not been ased to be "uoted separately in the price schedule but have been included with the various wor activities in the price schedule$ shall be arran%ed+supplied by the contractor as per the technical specifications anne/ed with the tender. The contractor shall tae care to include their cost in the relevant columns of the wor activities$ as no separate payment shall be allowed on this head. . The cost of GI +G## wi res and con ductor re"uired in bul fo r strin%in%$ sa%%in%  %uardin% of lines is not to be included in the activity of strin%in%$ sa%%in%  %uardin%. The same shall be paid as per prices "uoted separately in the price schedule. . :owever the cost of GI+G## wire re"uired in other activities lie earthin% and stays are to be included in the correspondin%

Page | 30

Sl. No.

Particular

Detail activities of the price schedule itself and no separate payment shall be allowed on this head. F. All the materials lie steel sections$ masonry material i.e. !ement$ #and$ !oarse #and etc. and paints are to be arran%ed by the contractor and no separate payment shall be made for these items. B. The unit rates "uoted shall include minor details which may not have been included in these documents but are e/ecuted for satisfactory completion of the various wors. ,C. All measurements for payment shall be in #.< units.
ERECTION ; CO44ISSIONING NE? 11+,.-'' ( DISTRI0UTION TRANSFOR4ER S+S

Page | 31

Sl. No.

Particular

Detail In each town$ there are number of new distribution transformers 5,,+C.917 sub-stations re"uired to be constructed 58E+*+,CC+8EC+9CC 1A7. The scope includes desi%n$ en%ineerin%$ fabrication of the structure and placin% of new Distribution Transformer and its accessories on it. This shall include supply and erection of the followin% items' ,. All the e"uipments under scope shall be as per their respective technical specification enclosed. 8. The main items which are to be supplied$ erected and -

1.

Scoe

-

commissioned are listed below' ,, 1+C.9 1 Distribution Transformers of various capacities. 5with oil7 havin% efficiency e"uivalent+better than that for three #tar ratin%s of 233 with completely self protective 5!#P7 features and %uaranteed period of five years. ,, 1 TP06- :orizontal type ,, 1 Drop 6ut fuses. ,, 1
1.1

Dou)le Pole

*. #upply erec tion$ testin% and commissionin% of double pole structures at DT substation site for fi/in% of
1.2

4ountin>

9. !ontractor shall evolve the mountin% arran%ements of various e"uipments on DT and shall have to %et the approval of the 3n%ineer in-char%e for its detailed en%ineerin%.

1.'

Oil Te$t

E. !ontractor shall carry out 2D and DGA of the oil and submit the results to the owner.

1.-

T4PO

1.

DO Fu$e Set

1./

11#( LA

. TP06 shall be :orizontal type. The hei%ht of the operatin% handle shall be such that a normal hei%ht operator can operate it by standin% at %round level. . Drop out fuse on ,,1 side %ive protection to the DT even durin% dead short circuit condition at ,, 1 side.

Page | 32

Sl. No.

Particular

Detail F. ,,1
1.

LT 4eterin>

B. #uitable
1.

LT Caacitor 0an#

,C. The contractor shall supply and erect pole mounted
1.<

Ter5ination it

1.1,

Fencin>

1.11

LT Di$tri)ution 0o7

,,. All the
Page | 33

Sl. No.

Particular

Detail =or * 1A Transformers$ bus bar of *CC amps shall be used and no. of out%oin% feeders shall be two with ,CC amps fuse unit on each out%oin% feeder.

1.12

Eart%in>

=or ,CCC  *C 1A Transformers two
1.1'

Co55i$$ionin>

1.1-

Sta3 Set$

1.1

Paintin>

1.1/

Fa)rication And Erection O! L.T. Ca)le Stand

1.1

La3in> O! L.T. Ca)le

The contractor will have to construct the DTs sub-station in complete respect and hand over the same to the owner in ready to use condition. If any item or items not mentioned in 264 but re"uired essentially for completion of wor$ the same shall be arran%ed by the contractor without any e/tra payment. Ade"uate number of stay shall have to be provided on the pole$ double pole four pole structu res to balance the side wards pulls at the point of turnin% of the lines. All stays had to be %routed as per drawin% enclosed. #tay sets shall be as per specification and drawin%. Poles and steel structures shall be properly painted as per ;PP!< norm with the consultation of !36. This wor involves fabrication of 0.# An%le EC / EC /  mm. with cable bindin% + clampin% arran%ement includin% its %routin% and paintin%. Laying of L.T. Cable shall be as per table given below: !apacityof =orI+!ofT+= =orDistributors T+= in 1A #in%le lead 5#". mm.7 <.T. */ cable 5#". mm.7 Phase )eutral 8E *E *E+8 * C C+8 ,CC ,8C C+8 ,C 89C ,8C+8 8EC$ *CC 9CC 9CC ,8C+* 9CC$ECC 9CC+8 9CC 89C+* *C$CC$EC *C+8 *C 89C+E FCC$,CCC

,CCC+8

,CCC

89C+F

All the incomin% leads from Transformers to the
1.1

Con$truction o! tran$!or5er lint%

The wor involves construction of transformer plinth as per drawin%s suitable for installation of transformer upto ,CCC 1A. The size of plinth shall be 8 to 9 0 lon%$ 80 wide and the hei%ht of the plinth shall be ,.80 with ,E !m. thic top slabs with 8 no. 8E/E/ mm 0# channel 80 lon% imbedded in it. The above wor includes e/cavation of earth$ layin% of bric ballast pad for foundation bric wor$ R!! and plasterin% and proper curin%. The ration of cement+course sand+fine sand+bric ballast+stone %rit shall be as per P@D schedule.

Page | 34

Sl. No.

Particular

Detail The fencin% is constructed utilizin% vertical post duly %routed + fitted in %round+on floor. :orizontal rails fitted to the vertical posts$ picets 5if re"uired7 fitted to rails and %ate to facilitate entry and e/it within the covered area.

1.1<

1.2,

1.21

FRP Fencin>

C%e5ical Pie eart%in>

L.T. Caacitor 0an#

The vertical post shall be made out of =RP Pultruded hollow section. #uch posts shall be ept preferably at a distance of ,CCC mm c+c and shall be %routed in the %round with c.c. of ratio ,'9'F. The vertical posts shall be supplied with pre-drilled holes so as to accept rails and other accessories for fi/in% of %ates etc. The len%th of vertical post shall be sufficient to tae care of %routin%$ depth i.e. under%round and hei%ht of fencin% above the %round. Posts at corners and %ate openin%s may be of different size+shape so as to tae care of the fencin% re"uirements. The hollow pipe used in the chemical pipe earthin% is fitted with a G.I. strip 9C/mm and !!0 5!rystalline conducive mi/ture7 is compressed in to the pipe and pipe is sealed at both the end. !!0 is a semi metal and the hollow pipe filled with !!0 behave lie a salt pipe and therefore the current carryin% capacity increases substantially. The !!0 has a hi%h meltin% temperature of 8ECCSc and unlie coal it will not burn into ashes under hi%h temperatures of ,ECCSc under hi%h fault currents occurrin% due to phase to phase or phase to earth fault The capacitor on
RENO(ATION ; 4ODERNIATION ?ORS ; AUG4ENTATION OF 11+,.-'' ( DISTRI0UTION TRANSFOR4ER S+S

Page | 35

Sl. No.

Particular

Detail In the town under the scope of this tender$ there are number of e/istin% distribution transformer #ub #tations 5,,+C.9 17 with ratin%s varyin% from 8E 1A to ,CCC 1A scattered all over the town.
1.

Scoe

i7

All the e" uipments under scope of sup ply shall be %o verned by their respective technical specification enclosed.

ii7 commissioned The main e"uipments are toare belisted supplied$ erected and under Rwhich  0 wor below' -

-

,, 1 TP06 J ,, 1 Drop 6ut fuse set ,, 1
-

=encin% of sub stations Paintin% of transformer and structure. Replacement of faulty insulator and bushin%$ if any. #upply of new DTs in case of increasin% capacity.

-

1.1

Tran$!or5er Oil

1.2

Reair o! DT

vi7

!ontractor shall be responsible for arrestin% oil leaa%es and toppin% up the transformer oil 5fresh7 up to the re"uired level.

vii7 Durin% the cour se of wor$ if any internal fault develops in the runnin% DT$ the contractor shall either repair the same at site or shall transport them to the worshop and repair it. Its

Page | 36

Sl. No.

Particular

Detail handlin% and supply of spares etc shall be to contractorNs account. !ontractor will ensure continuity of supply with the help of trolley mounted DT

1.'

Oil L ea#a>e

1.-

TP4O

1.

DO F u$e Set

1./

11#( LA

viii7 !ontractor shall ensure cleanin% of the oil slippa%es which had taen place durin% oil leaa%e arrestin%. i/7

TP06 shall be %an % operated and hei %ht of the operatin% handle shall be such that a normal hei%ht operator can operate it by standin% at %round level.

/7

Drop out fuse on ,, 1 side shall %ive protection to the DT even durin% dead short circuit conditions at ,, 1 side.

/i7

,,1
/ii7 A suitable locable
1.

L.T. Di$tri)ution 0o7 94ade o! S4C or CRCA 4S S%eet:

This distribution bo/ shall have TP) bus bar of ECC or FCC amps capacity. The sin%le core cables emanatin% from Distribution Transformer?s
1.

L T 4eterin>

1.<

LT Ca)le$

2.,

Plint%

=or ,CCC  *C 1A Transformers two
Page | 37

Sl. No.

Particular

Detail structure$ in case DT is pole mounted.

2.1

2.2

Fencin>

0u$%+In$ulator$

2.'

4CC0

2.-

Protection Tri $ettin>

2.

Paintin>

2./

Silica Gel

/vii7 =encin% of DT area with =RP fenc in% as detailed above 5wherever possible7 includin% its distribution bo/ so that unauthorized accessin% can be curtailed. /viii7!ontractor shall be responsible for assessin% the dama%ed bushin%+insulators in DT area and shall also be responsible for their supply and replacement. /i/7 0icroprocessor base d 0!!2 of suitable ratin % shall be supplied and erected by the contractor. The 0icroprocessor based 0!!2 shall be installed at transformerNs
//ii7 !ontractor shall be responsible to replace the silica %el and fillin% them with new silica %el.

Page | 38

GENERAL SPECIFICATION FOR LAING OF AERIAL 0UNCHED CA0LES Sl. No.

Particular

Aerial 0unc%ed Ca)le$ on Ne" Suort$

Detail Aerial 2unched !able shall be laid over-head with bare messen%er wire duly suspended with the help of special clamps and hoos as per drawin% enclosed. The clamps shall be supported on
Sa> ,.9CB 0 ,.C8E 0 C.C8 0 C.98* 0 C.888 0

Typical arran%ements of han%in% from the support are shown in drawin% for #trai%ht runH an%ledH and dead endH locations. The clamps assembly shall provide sufficient fle/ibility to allow free movements of the clamps at strai%ht run or an%led location.

1.

The tappin% arran%ements shall be as shown in drawin%. The tappin% cable shall be connected to the main cable with the help of <.T. insulation piercin% connectors 5non-tensile7. The other end of the taped cable shall be properly connected with the bus bars of the
2.

Aerial 0unc%ed Ca)le$ on e7i$tin> LT Line$

The replacement of the <.T. bare lines by Aerial bunched conductors are to be done in selected area of the town which are con%ested+densely populated and have lesser clearances between lines and the houses and are prone to theft of electricity. The wor may also to be done in other selected area of the town as per the decision of en%ineer in-char%e. @ Continuou$ Sl. No.

1 8 * 9 E

Sie o! A0C

*/,EC,/,8C,/, */,8C ,/BE ,/, #".mm. */BE,/C,/,#".mm. */C,/EC,/, */EC,/*E,/,#".mm.

Current Carr3in> caacit3 in air at a5)ient te5. -,, C 9A5.:

8*C

Aro7. "ei>%t o! A0C 9>.+5.: ,BCB

,FC

,9*C

,EE ,*C ,CE

,,FC FBC 9C

Page | 39

Sl. No.

Particular

'.

De*ener>iin> o! $3$te5

-.

Di$5antlin> o! e7i$tin> L.T. )are conductor$

.

Strin>in> and Sa>>in> o! A0C

/.

In$tallation o! L.T. in$ulated iercin> connector$

.

In$tallation o! Di$tri)ution 0o7 and Relea$e Ser&ice Connection

Detail De-ener%izin% of <.T. system or ,, 1 of the site as decided by 3n%ineer in char%e before tain% up the wor. It shall be the sole responsibility of the contractor to ensure that the line is de-ener%ized and safe in all respect before start of the wor. Dismantlin% of e/istin% <.T. bare conductors$ old or dama%ed
The distribution bo/ 5#0! or Deep drawn !R!A 0# #heet77 shall be suitable for mountin%+fi/in% on round poles  rails. )umber of such distribution bo/es to be mounted on one pole shall depend on the number of service connections to be %iven from the pole and it may be two to three in num bers. 9 nos. *E mm 8. Aluminium multi strand cable shall be used to connect the incomin% bus bars of the distr ibution bo/ to the main Aerial 2unched conductor by usin% suitable <.T. insulation piercin% connectors. The number of out%oin% cable provisions shall be of appro/imately ,C-,E service cable connections from each distribution bo/.

8.

There shall be proper clampin%  ti%htenin% arran%ements for the out%oin% service cable.

*.

The distribution bo/ sha ll be of suc h construction that rain water does not enter into it and there must be proper sealin% arran%ement of the pillar bo/ cover. Alternatively at some of the sites the service connection will have to be %iven directly throu%h connectors from main phase conductors without installin% distribution bo/+ios. This decision shall be taen by the #ite 3n%ineer of respective DI#!60.

9.

Installation of <.T. insulation piercin% connectors for &umperin% wherever re"uired.

E.

The connection to stre et li%ht shall be thr ou%h 6)+6== switch already e/istin%. In case it is not provided the same has to the provided by the contractor.

.

Dismantlin% of e/istin%
Page | 40

Sl. No.

Particular

.

Sul3 and erection o! ne" ole$

<

Eart%in> o! ole$

Detail decision of the 3n%ineer in-char%e. The scope covers supply$ erection$ %routin%  plinthin% of
1,.

Reair o! da5a>ed ole$

stren%then the bottom of rotten poles. The contractor shall construct ade"uate size plinth for such poles by concretin% in the ratio of ,'*' of cement$ sand  bric ballast and curin% the same. The contractor shall have to arran%e weldin% set and other necessa ry materials includin% 0.#. An%le etc. for this wor.

Page | 41

GENERAL SPECIFICATION FOR LAING OF 11 ( ; '' ( BLPE CA0LE Sl. No.

1.

Particular

Detail ,.

The scope shall cover complete installation of all e" uipment and accessories covered under this contract.

8.

Installation wor per tainin% to e"uipment$ cablin% etc shou ld be in accordance with the applicable standards$ safety codes etc.

*.

Installation shall be carried out strictly in accordance with the approved drawin%s 0odifications$ if any$ re"uired to suit site conditions$ shall be carried out only with the prior approval of the 3n%ineer. All such chan%es shall be incorporated in As builtH drawin%s to be furnished by the contractor.

,.

It is proposed to lay under%round K
General@

The 3n%ineer shall intimate the actual rout5s7 to the contractor within three wees.

2.

La3in> O! '' ( ; 11 ( Ca)le$

8.

The "uantity as %iven in the bill of "uantity are appro/. and may vary on either side as per actual re"uirement at site. @or should be done as per actual distances alon% the route of the cable and shall be paid accordin%ly.

*.

The scope of this specification covers loadin% transportation$ unloadin% of cable drums$ di%%in% of trenches$ layin% in under%round trenches$ &ointin% terminations bac fillin% of earth and testin%  commissionin% of sizes mentioned in schedule of wor conformin% to relevant I##+technical particulars enclosed herewith.

9.

The followin% technical particulars for layin% of cable shall be followed as per I#' ,8EE+,BF* or latest amendment thereof.

S. No.

Ite5

For''#&

For11#&

,.

Depthoftrench

,CECmm

BCCmm

8.

@idthoftrench

ECmm

ECC mm 5=or sin%le cable7 9EC/CC/ECmm 5=or */,FEs" mm or above size cable7

*.

#ize of stone slab

9EC/CC /EC mm

9.

)o. of stone slab per meter

,.

,.

E.

)o. fo brics per meter

B/8

B/8 for */,FE mm8 or above

.

C.E* cubic meter

C.*E cubic meter

Page | 42

Sl. No.

Particular

Detail

.

D.! volta%e to which cable shall withstand for E minutes after completion of layin%+&ointin%+terminati on 5in ms7 between any conductor and metallic sheath+screen+armour.

F.

5:DD method7

B.

!learances- The desired minimum !learances are as follows. a7 Power cable to power cable b7 Power cable to control cable c7 Power cable to communication cable d7 Power cable to water line

C1

,F 1

As per specification %iven in ol. II part A

!learance not necessary$ however lar%er the clearance better would be current carryin% capacity. C.8 meter C.* meter C.* meter

!learance not necessary$ however lar%er the clearance better would be current carryin% capacity. C.8 meter C.* meter C.* meter

)ote':i%h volta%e test to be conducted by contractor.

'.

Ca)le La3in>

The trenchless technolo%y shall be used with :DP3 casin% for the portion of the cable route such as road$ railway$ nullah crossin% and without :DP3 casin% for ma&or portion of the cable route. The outer diameter of the :DP3 pipe shall be suitable for insertion in an FH diameter horizontally drilled bore. The :DP3 pipe shall be of P3 FC %rade with pressure ratin% P)9 conformin% to I# 9BF9+,BBE and shall have wall thicness of .8C to .,C mm. The :DP3 pipes shall be &oined by usin% 2utt weldin% and a +8C G.I wire shall be provided alon% the entire len%th of each pipe duct . The Dept h of horizontal drillin% shall be between 8 to * meters or as re"uired. The drillin% shall be with a Directional drillin% unit e"uipped with automated pipe handlin% system and all necessary accessories.

-

Ca)le Trenc%

Note@* In case of any dama%e of material+ e"uipment of *rd party$ all char%es would be borne by the contractor ,. The trenches for the cable layin% shall be done as per standard practice The trenches shall be du% in such a manner so that soil etc once e/cavated does not fall bac in the trench. The cables 5a7 entry and e/it in pipes etc should be accordin% to relevant I##.

Page | 43

Sl. No.

Particular

Detail 8. @hen more than one cable shall be laid in the same trench$ a horizontal inter a/ial spacin% for C.8E to C.9C meters for ** 1 and C.,E to C.8E meter for ,, 1 in order to reduce the effect of mutual heatin% effect and also to ensure the fault occurrin% on one cable shall not dama%e to other cable. *. @here two cab les are laid in parallel in one trench$ the separation - wall shall be provided by means of layin% brics throu%hout its len%th upto the hei%ht of top slab+brics. ,. In case of roads$ railway tracs and water pipeline crossin%$ the cable shall be laid in the cast iron+hume pipe etc as prescribed in clause .*.9 of I#',8EE+,BF*.

.

/.

Road and Rail"a3 cro$$in>

Handlin> o! ca)le

8. In case of Railway crossin% entire formality$ includin% cost of attainin% its permission shall have to be carried out by the contractor at its own cost. Also for the purpose of under%round Railway crossin% cast iron pipe of suitable size 59U minimum7 shall be laid instead of cement hume pipe.

The contractor shall made ade"uate arran%ement 5particularly sufficient man power  e"uipment7 for proper handlin% of cables and puttin% the same direct on rollers and ensure that no twists etc. are made in the cable and cables are not dama%ed in any way whatsoever. !ontractor shall also ensure that durin% entire worin% at site upto commissionin% sta%e their responsible en%ineers+supervisor with trained crew shall be continuously available ,. )ecessary permissions to lay the cable in %round after cuttin% the road5s7 51uchha7. 2ric-pitched  Pucca. !rossin% brid%es railway tracs etc will be obtained by the contractor over the re"uest from the en%ineer inchar%e of the wor and necessary payment+char%es of above shall be borne by the contractor.

.

Road cuttin> and re$toration

8. The contractor should tae no tice of the fact that in cas e of cuttin% of roads etc. is re"uired for layin% cableL the contractor shall have to tae prior permission from local authorities of P@D+ 0unicipalities +)a%ar )i%am+Development authorities etc. or other owner of the road. *. The road cuttin% char%es payable to such a% encies may be substantial and shall be borne by the contractor. The contractor shall tae care of such char%es while "uotin% his rate for layin% of cables as no e/tra payment shall be made to the contractor on this account. All necessary clearance for such wor from the respective a%encies shall be responsibility of the contractor.

.

?arnin> + notice$

@hile the e/ecution of wor is in pro%ress$ the contractor shall have to provide necessary li%htin% arran%ement+si%nboard+ road stoppers and other precautionary warnin%s+notices so that accidents+ dama%es+losses to the public+manpower+ material etc are avoided.

Page | 44

1. General Technical Specifications

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