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| 1 | Supply, laying, jointing and testing of electric power cable, heavy duty 11KV (E) grade, XLPE B13:B24insulated, screened, bedded, galvanised steel strip or wire armouredwithaluminium conductor ofcross sectional area of 120 sqmm, 3 core, laid in trenches/cable duct complete all as specified and directed. |
| 2 | Supply, laying, jointing and testing of electric power cable, heavy duty 11KV (E) grade, XLPE insulated, screened, bedded, galvanised steel strip or wire armouredwithaluminium conductor ofcross sectional area of 95 sqmm, 3 core, laid in trenches/cable duct complete all as specified and directed. |
| 3 | Excavation in trenches not exceeding 1.5 m width and not exc 1.5 m in depth andgetting out in soft/hard/dense soilincludingSite clearance by Rough excavation , cutting of Herbs / shrubs / jumgle for clearing of sire required forremoving/laying of HT/LT UG CABLE complete all as specified and directed.Note : Quoted rates including of Site clearance by Rough excavation /clearing away all grass vegetation, saplings, brushwood, undergrowth, roots and trees not exceeding 30 cm girth (measured one meter above ground level) ,cutting of Herbs / shrubs / jumgle for clearing of sire required for layingpipe line in hard / dense soilcomplete all as specified and directed. |
| 4 | All as per srl item No. 03 above but for each additional 1.5m or part thereof in depth beyond the first 1.5m. |
| 5 | Returning, filling in excavated approved soil, including spreading, levelling, watering and well ramming in layers not exceeding 25cm each complete. |
| 6 | Removing excavated soil to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete. |
| 7 | Supply and spreading dry sand of approved quality for cushioning of UG cable laid in trenches 8 cm deep before laying the cable and 15 cm thick after laying & streching the cable complete all as specified and directed.(NOTE : For the purpose of Payment, Punned thickness of Sand Cushioning only shall be Measured and Paid for). |
| 8 | Supply and laying un-reinforced precast concrete cable covers class HV type 1, flat ofsize 300x180x40 mm complete all as specified. |
| 9 | M & L for PCC (1:4:8) type D2 (using 40 mm graded stone aggregate) as in foundation filling and mass concrete complete all as specified and as directed. |
| 10 | M&L for providing cement concrete type B0 1:2:4 (12.5mm aggregate) coping, kneelers, apex stones, bed plates including necessary form work and forming neat finish surfaces complete all as specified and as directed. |
| 11 | Supply and fix cable jointing kit for 11 KV (UE) grade cable for outdoor termination , heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size95 sqmm complete all as specified and directed. |
| 12 | Supply and fix cable jointing kit for 11 KV(UE) grade cable for in door termination, heat shrink type, joint complete with jointing material and accessories suitable for3 core XLPE, armoured, Al conductor cable of size 95 sqmm complete all as specified and directed. |
| 13 | Supply and fix cable jointing kit for 11 KV(UE) grade cable for in door termination,heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 120 sqmm complete all as specified and directed. |
| 14 | Supply and fix cable jointing kit for 11 KV(UE) grade cable for outdoor termination , heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 120 sqmm complete all as specified and directed. |
| 15 | Design,Manufacturing,Supply, Installation,Testing and Commissioning of 4way 12kV rated RingMain Unit outdoor with right extensible and HT Fault Level 21KA, consisiting of 630A 12kV rated, 02 nos load break switches as incomers & 2 nos motorized type VCB as outgoings with metering modules alongwith necessary Earth Switches, power pack system 230 volt AC 24 Volt DC for shunt trip arrangement and Motor and other auxiliary circuit operation, HT Copper Bus bar as per detailed description as follows: Location:- Officers mess turning. |
| 16 | RMU CONSTRUCTION: The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 gas pressure (Filing pressure @ 20 degree celsius at 1.2 bar to ensure the insulation and breaking functions. Sealed for life, the enclosure shall meet the \"sealed pressure system\" criterion in accordance with the IEC 62271-1 standard (§ 3.6.5.4): \"a volume for which no further gas processing is required during its entire expected life”. In addition, manufacturer shall confirm that maximum leakage rate is lower than 0,1 % / year. It shall provide full insulation, making the switchgear insensitive to the environment (temporary flooding, high humidity...), IP67 degrees of protection in accordance with recommendation IEC 60529 § 14.2.7. Thus assembled, the active parts of the switchgear shall be maintenance-free and the switchboard shall be low-maintenance. The switchboards drives shall have an IP2X protection index. The tank shall be made of at least 2mm unpainted stainless steel. SF6 gas is the preferred dielectric medium for MV RMUs. Oil filled switchgear will not be considered. SF6 gas used for the filling of the RMU shall be in accordance with IEC 60376.Any accidental overpressure inside the sealed chamber will be limited by the opening of a pressure limiting device in the lower part of the enclosure. Gas will be released to the rear or the bottom of the switchboard away from the operator. Manufacturer shall provide type test report to prove compliance with IEC 62271-200 Annex A, Internal arc classification class AFLR with 21kA 1s for the SF6 enclosure. Make of the RMU, vaccum intrtupter , relay & meter shall be of same OEM. All the test certificate shall be in the name of the OEM only . |
| 17 | HT SYSTEM:3 phase -3 wire , HT Fault level 21 kA, Power System earthing - solindly earthed at up stream source, HT Copper Bus with Short Time Curent rating 21 kA for 3Sec, Continuous current rating at least 630 A. Enclosure of RMU must be IAC rated for 21 kA for 1 Sec. Design ambient to be considered as 40 Deg C.HT CIRCUIT BREAKER:(i) There shall be 2nos.load break switches as incomings and 2 nos 12 kV rated VCB as outgoing ( total 4 nos.) . The circuit breakers shall be horizontal isolation - horinzontal draw out type. All of the switchgear shall be capable of withstanding this current without any damage being caused, in accordance with the recommendations IEC 62271-1 and IEC 62271-200.Loss of service continuity class: LSC2A. (ii) The Circuit Breaker must be rated for 12 kV ( nominal Voltage), 28 kV/75 kVp , 3 Phase, 50 Hz, Short Circuit Fault Level of 21 kA for 3 secs.(iii) No. Of Close Coils - 01 no. operable at 24 V DC (85% - 110% ) , No. of Trip Coils - 02 nos. , operabale at 24 V DC ( 70% - 110%) for shunt trip Feature for series trip shall also be enabled.(iv) Provision for supervision of the two indepandent Trip Circuits for the two Trip Coils to be provided.(v)Switchgear classification: PM class(vi) Loss of service continuity class: LSC2A(vii) Duty Cycle : O – 0.3sec – CO – 3min – CO, Vacuum Circuit breaker shall be of M2, E2, C2 duty and capable for minimum 10000 short circuit breaking operation at full short circuit level.(viii) STC rating 21 kA for 1 Sec (for Vacuum Interrupter).(ix)Vacuum Interruptor must be hermetically sealed and must comply IEC 60056 ( along with latest amendments).x)Circuit Breaker to be equipped with Suitable tripping arrangement with push button, Mechanical counter to assess the total number of operations of the breaker, Mechanical ON / OFF indicator, Auxiliary switches, Auxiliary Contacts( at least 2 NO + 2 NC of Class 2 category), Emergency trip push button.(xi) The Operating mechanism shall be spring charged motor operated type with Spring Charge Universal motor operable on 24 V DC / 230 V AC. (xii) Suitable monitoring of Circuit Breaker status ( ON, OFF, Trip, CB Spring Charged) , Trip Circuit Healthy / Unhealthy, DC healthy/unhealthy to be provided using IoT based online monitoring system using microprocessor / digital RTU with historical data saving, capable of updating status and sending alarm signal on IoT monitoring unit, GSM and GPRS platform through which live monotoring status and equipment reading and fault related history can be accessed by user remotely. |
| 18 | (xiii) Voltage Presence Indicator shall be provided against each HT circuit ( against each VCB) on line side for knowing the presence of line enerzisation status. EARTHING:-The cables shall be earthed by an earthing switch with short-circuit making capacity, in compliance with IEC 62271-102 standard. The earthing switch can only be operated when the switch is open. The switch and earthing switch operating mechanism shall have a mechanical endurance of at least 10000 operations.Separate line side Earth switches shall be provided in each HT Circuit ( against each VCB). RMU BUSHING AND CABLE TERMINATION:It is preferable to have all bushings accessible from the front of the RMU. Bushings along the sides or the rear of the RMU are not acceptable. For each cable compartment, the bushing shall be at the same height in order to facilitate a possible reversal of the cables The bushing should be conveniently located for working with cables specified and allow for the termination of these cables: -630 A M16 bolted connectors for switch-disconnectors and vacuum circuit breakers functions.The profiles of the cable connection bushings shall be in compliance with IEC-60137 standard. Cable clamps:A cable clamp arrangement must be provided for all network cables terminated on the RMU. Provision for Cable Entry: There shall be suitable provsion for Cable entry from bottom through 3 mm thick CRCA steel thick detachable gland plate along with provision for termination of 2 runs of 3 c X 300 Sq mm 11 kV (E ) , XLPE insulated Aluminium CablesNote:-(i) Suitable foundation work is included in the quoted rate as per manufacturer\"s recommendation.(ii) Configuration and schematics arrangement of panel shall be got approved from GE before fabrication.(iii) Any other parts/ items not specified above but have been required essential for smooth and safe functioning of panel system shall be quoted rate. (iv) The VCB/RMU will be tested as site as primerary injector system and relay will not be set as per load requirement.(v) Panel should have heating element with thermostat to avoid moisture condensation in the panel. (vi) After installation of RMU at site,the pre-commisioning test shall be carried out by SEI/EI. (vii) Pre-dispatch inspection at OEM factory premises shall be carried out Rep of Accepting officer.The rate shall be deemed to be included in the quoted rate |
| 19 | The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 gas pressure (Filing pressure @ 20 degree celsius at 1.2 bar to ensure the insulation and breaking functions. Sealed for life, the enclosure shall meet the \"sealed pressure system\" criterion in accordance with the IEC 62271-1 standard (§ 3.6.5.4): \"a volume for which no further gas processing is required during its entire expected life”. In addition, manufacturer shall confirm that maximum leakage rate is lower than 0,1 % / year. It shall provide full insulation, making the switchgear insensitive to the environment (temporary flooding, high humidity...), IP67 degrees of protection in accordance with recommendation IEC 60529 § 14.2.7. Thus assembled, the active parts of the switchgear shall be maintenance-free and the switchboard shall be low-maintenance. The switchboards drives shall have an IP2X protection index. The tank shall be made of at least 2mm unpainted stainless steel. SF6 gas is the preferred dielectric medium for MV RMUs. Oil filled switchgear will not be considered. SF6 gas used for the filling of the RMU shall be in accordance with IEC 60376.Any accidental overpressure inside the sealed chamber will be limited by the opening of a pressure limiting device in the lower part of the enclosure. Gas will be released to the rear or the bottom of the switchboard away from the operator. Manufacturer shall provide type test report to prove compliance with IEC 62271-200 Annex A, Internal arc classification class AFLR with 21kA 1s for the SF6 enclosure. Make of the RMU, vaccum intrtupter , relay & meter shall be of same OEM. All the test certificate shall be in the name of the OEM only . |
| 20 | M&L Cross arms, bracings, supports,clamps and back plates fabricatedfrom structural steel sectionsincluding nuts, bolts, washers,welding, bending cold or hot, drilling holes for bolts, in any shapeor size as indicated or directed and inclusive of one primer coat, oneunder coat and one finishing coat ofpaint |
| 21 | M&L Lightning arrester Distribution Class complete with all fittingsdischarge capacity 5 kilo amp, Rated voltage 12 KV, High current impulse withstand 65 kA suitable for 11000 volt complete with all fittings. |
| 22 | M&L Earthing complete with galvanised steel earth plate electrode 60cm x60cm x6mm thick buried directly in ground earth pit not less than 2.25 mtr deep below normal ground level) with top edge of plate not less than 1.5m below ground level, connecting to the galvanised iron earth lead strip of size 32x6mm, by means of nuts, bolts,check nuts and washer etc of galvanised iron and earth lead protected by provision of GI pipe light grade 40mm bore light grade from earthing test point or main controling switch as directed including providing funnel with 20mm bore GI pipe light grade, wire mesh, charcoal or coke andcommon salt in alternative layer of 15 cm (compactedd thickness) all round the earth electrode, concrete earth pit in PCC (1:2:4) type B-1 using 20mm graded stone agagregates with 50mm thick cover of RCC (1:2:4) (re-inforced with 8mm dia TMT bar @15 cm C/C bothways and MS bar handle made of 10mm dia bar) including necessary earth work in excavation, returning in and removal of surplus soil to a distance not exceeding 50mtr, all as per electrical plate No 3 of MES Schedule Part-I including earthing pit cover etc. complete all as specified & directed. |
| 23 | M&L SITC Switch air break gang operated triple pole mechanically operated mounted on 10 KN insulatorsinsulator and steel frame out door type suitable for vertical installation single brake provided with locking arrangement, consisting of MS channel ,HT post type insulator ,copper alloy high pressure assembly ,operating rod of 25 mm dia GI pipe medium grade confirming to IS-1818 of 1972 ,suitable for 11000 volt ,400 Amps, short time withstand current 25 KA for 3 sec completeall as specified. |
| 24 | M&L SITC Switch air break gang operated triple pole mechanically operated mounted on 10 KN insulatorsinsulator and steel frame out door type suitable for Horizontal installation Double brake provided with locking arrangement, consisting of MS channel ,HT post type insulator ,copper alloy high pressure assembly ,operating rod of 25 mm dia GI pipe medium grade confirming to IS-1818 of 1972 ,suitable for 11000 volt ,400 Amps, short time withstand current 25 KA for 3 sec completeall as specified.MAKE: CROMPTON GREAVES / ABB/ BHEL/AREVA/SIEMENS |
| 25 | M&L for road crossing/drain crossing by adopting trench less tunneling work through specified pipe jacking method by erecting the equipment to true to the allignment and gradient by haidrolic pipe jacking technique complete including tunneling, excavation in any type of soils including hard rock, HDPE Pipe 160/136 mm diain any length including jointing materials to carry HT UG cables of size 95/120 Sqmm 3 coreand necessary conveyance charges of machinery and other required materials in co-ordination with the concerned authorites complete all as specified and as directed.Note : Quoted rates inclusive of HDPE pipe 160 mm dia 0.4 MPA work pressure |
| 26 | S&FStay assembly complete with accessories as shown in electrical plate No. 1 , incl (stay clamps, 7/19 Stay eeire , excavation and concrete work ) complete all as directed |
| 27 | S&F Loop type insulator, vitreous porcelain, white, brown or green:Large size, with overall dimensions 90mmx140mm, clearance of hole 25.5mm |
| 28 | Taking down old damagedpole of any size and specification incl cross arms incl insulators and removing from site to MES store yard for issue the same to the contractor against sch of credit |
| 29 | Taking down old damaged4 pole structure incl damaged GOD incl DO\"s icl cross armsand removing from site to MES store yard for issue the same to the contractor against sch of credit |
| 30 | Taking down old damaged 2 pole structure incl damaged GOD incl DO\"s incl cross arms and removing from site to MES store yard for issue the same to the contractor against sch of credit |
| 31 | Taking down taking down old damaged stay assembly of any specification and size and removing from site to MES store yard for issue the same to the contractor against sch of credit |
| 32 | Dismantling ofold damaged ACSR conductor of any specification and size and removing from site to MES store yard for issue the same to the contractor against sch of credit |
| 33 | S&F Aluminium conductor, steel reinforced size ferret for jumpering in4 pole structure complete all as directed |
| 34 | M&L for cable route indicator made out of Plain cement concrete of 1:2:4 type B1, of size 15 cm x 15cm x 25 cm, with one end of angle iron of size 25mm x 25 mm x 4 mm duly embedded in cement concrete and the other end of angle iron duly welded with chequered ms plate of 120 mm dia engraved with \"MES HT Cable\", angle iron of approx lenght 55 cm, complete all as specified and all as directed for HT Cable route indicator. |
| 35 | S&F Tubes, \"lightgrade\" galvanised, 100 mm dia with all fitting and fixed complete to walls and b pole structureor laid in floors complete ll s specifed nd directed .. Quoted rates inclusive of 2 set of clamps for every 3 meters of piipe |
| 36 | M&L Danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size, for HT, 25x20cm size |
| 37 | M&L Pin type,porcelain,vitreous,white,brown or green insulator including one galvanised mild steel spindle,two galvanised iron washers and one galvanised iron nuts ,150 mm hight,150 mm dia for 11000 volts 10 KN. |
| 38 | Supply and fix disc type insulator vitreous 145 mm high and 255 mm dia ball and socket type white /brown 70 kn\"two in one series\" assembly for tension with clamps for conductor suitable for 11 000 volt working pressure complete all as specified and as directed. |
