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| 1 | Excavation in trenches not exceeding 1.5m wide & not exceeding 1.5m in depth and n.exc 10 sqm on plan for foundations , laying of LT under ground cables/ GI pipes and steel tubular poles etc. and getting out as in soft / loose soil complete all as specified and directed by Engr-in-Charge. |
| 2 | Excavation in trenches not exceeding 1.5m wide & exc 1.5 m but not exceeding 3 m in depth and n.exc 10 sqm on plan for foundations , laying of LT under ground cables/ GI pipes and steel tubular poles etc. and getting out as in soft / loose soil complete all as specified and directed by Engr-in-Charge. |
| 3 | Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc. 25 cm deep as in soil complete all as specified and directed by Engr-in-Charge. |
| 4 | Removal of excavated material n.exc 50 mtr and depositing where directed at a level n.exc 1.5 mtr above in starting point all as specified and directed by Engr-in-Charge. |
| 5 | Supply & fixing common burnt bricks as mechanical protection of this cables using old size sub class ‘B’ bricks laid dry flat over the cable width equal to the length complete all as specified and directed by Engr-in-Charge. |
| 6 | Material and labour for Sand cushioning/sand covering for underground cable protection complete all as specified and directed by Engr-in-Charge.Note:- Measurement shall be taken after Punnning down. |
| 7 | Material and labour for GI pipe light grade 50 mm dia laid along road crossings / plinth protection with suitable fittings for cable protection or fixed to the pole/ Wall complete all as specified and directed by Engineer-in-Charge . |
| 8 | Supply, laying, testing and commissioning in replacement LT XLPE UG cable insulated, armoured heavy duty electric cable, 1100 volts grade with stranded aluminium conductor of 16 sqmm 4 core complete including dismantling of old unserviciable cable all as specified and directed by Engr-in-Charge. |
| 9 | Material and labour for Reinforced cement concrete 1:2:4 type B-1 (20 mm graded aggregate) (as recommended by OEM) in Foundations, including rafts, footings, foundation beams; plinth beams; bases for columns, etc.; basement slabs, under-reamed piles and mass concrete all as specified and directed by Engr-in-Charge. |
| 10 | Supply & fixing 120 Watt LED Flood light fittings made up of pressure die cast housing with toughned glass and individual high power LEDs with secondary optics, IP66 protection complete all as specified and directed by Engr-in-Charge. |
| 11 | Earthing complete with galvanised steel earth plate electrode 60 cm x60 cm x 6 mm thick buried directly in ground ,(Earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level ,connected to and including galvanised iron earth wire 32 X 6 mm by means of nut, bolts, check nuts and washers of galvanised iron or steel and provision of charcoal dust and common salt packed all around the earth plate including necessary excavation and earth work in any type of soil and testing complete all as specified and directed by Engr-in-Charge and shown in electrical plate number 3 of MES SSR part-I(1991) .Note :- (i) The cost of GI earth lead & GI pipe of 7.50 mtr length for protection of GI strip 32x6 mm and excavation work for pit shall deemed to be included in this item. (ii) Earthing test will be carried out and if desired result not achieved and the earthing will be redone to achieve desired result without any extra payment. (iii) Charcoal dust and common salt upto 1.5 meter depth shall be filled in layers of 15 centimeters all around the earth plate. |
| 12 | Supply, installation, testing & commissioning of Factory Made 11 KV, 630 Amps, 21 kA for 3 Seconds, SF6 Insulated, Motorized, Outdoor, 6 Way RMU Consisting of 2 No VCB as Incoming and 4 Nos VCB as Outgoing for Feeder complete all as specified and directed by Engr-in-Charge and shall comprise of the following:[A] RMU shall be 11 KV, 63 Amps, 21 kA for 3 Seconds, SF6 Insulated, Motorized, Outdoor, 6 Way RMU, Right side Extensible with Air Insulated Bus Connected Metering unit, Type tested in line with latest IEC Standards, suitable for operations at 40ºC Ambient Temperature without any de-rating, Switchgear and Busbar shall all be contained in a Stainless Steel Enclosure [Minimum 2mm thick AISI 441 Grade] filled with SF6 at 0.3 Bar [300 hPa] Relative Pressure, RMU Tank shall provide Full Insulation and Switchgear shall be insensitive to the environment with Degree of Protection of IP67 immersion for 30 minutes as per IEC Standard 60529, Switchgear Operating Mechanism shall have an IP2X Protection and Cable Chamber shall have IP3X Protection, Outer Enclosure shall be IP 54 type tested, Powder Coated with Pure Polyester Based Paint, suitable for the site installation conditions, Accidental Overpressure due to an Internal Arc is limited by the opening of the safety valve, at the bottom of the metal enclosure, away from the operator, Plug in type of extensibility must be provided and coupling busbar should not be exposed to air to avoid oxidation of busbars. Extension of cubicle shall require 450mm to handle and the gap between the coupled RMU’s must be within 10mm. |
| 13 | [B] Vacuum Circuit Breaker (VCB) comprising of the following: [i] 11 KV, 630 Amps, 21 kA VCB with Manual / Motorised Spring Assisted Mechanism and Series Trip Coil – 1 No, [ii] VCB with Built-In Earth Switch – 1 No[iii] Position Indicator through clear front mimic in line with IEC 62271-103 – 1 No[iv] Self Powered Relay with O/C, S/C, E/F Protection. Relay shall have a Front USB / RS485 / RS232 Port for Laptop Interface / Modbus Communication, LCD Display, 10 Event Records, 5 Fault Records, min 2 setting group and keypad for setting parameters for the relay – 1 No[v] CT Ratio 200-100/1-1A for Incoming, 100-50/1-1A for Outgoing and, Class - 1.0, 2.5VA for Metering and Class 10P10, 2.5 VA for Protection – 1 Set[vi] Live Cable Indicator with indication at the Front and Three Inlets to check the Synchronization of Phases – 1 No[vii] Cable Termination Bushing suitable for up to 1 Run, 3 Core, 185 Sq.mm, XLPE Cable – 1 Set[viii] Cable Termination Cover Boots [Push on type] – 1 Set[ix] Fault Passage Indicator FPI.[x] Circuit Breakers shall have Two Positions: Open or Disconnected and Closed. A separate and independent 3 Position Earthing Switch and disconnector shall be fitted to open and earth the cables in such way that interlocks prevent all unauthorised operations. An operating mechanism shall be used to manually close the circuit breaker and charge the mechanism in a single movement. An independent mechanism shall be fitted for the 3 Positions Earthing Switch and Disconnector Circuit breaker shall be fitted with a local system for manual tripping by an Integrated Push Button. There shall be no automatic reclosing. Circuit Breaker shall have a min of 2000 Mechanical and Electrical Operations and 50 Nos Short Circuit Operations, Disconnector and Earth Switch shall have a minimum of 1000 [M1] Mechanical Operations, 100 Electrical Operations at rated current and 5 Nos Operations at Rated Short Circuit Current. |
| 14 | [C] Air Insulated Bus Connected Metering Unit comprising the following: – 1 Set[i] Air Insulated Enclosure with necessary Bus Connection – 1 No[ii] PT 11KV / RT 3 / 110V / RT3, 25 VA, Class-1.0 – 1 Set[iii] Voltmeter with Selector Switch – 1 No[iv] R / Y / B Indicating Lamps – 1 Set[v] 11 KV / 230V AC, 1 KVA Control Transformer – 1 No[vi] Battery and Battery Charger, 12 Ah, [I/P-230V AC, O/P - 24V DC] – 1 No[vii] Self Powered FRTU to detect Short Circuit and Earth Fault on the Cable System, Fault indication through LED Lamps, Reset through Remote and Local. As a minimum, the FRTU shall be capable of performing the following functions: [a] Acquiring Analog values from Multifunction Transducers or alternatively through Transducer – less modules and the status inputs of devices from the substation, processing and transmitting to Master stations. Capability to acquire analog inputs from analog input cards receiving standard signals viz. Current Loops 4 – 20 mA, etc.[b] Receiving and processing Digital Commands from the Master Station[s] [c] Data transmission rates – 300 to 19200 BPS for Serial ports for MODBUS and 10/100 MBPS for TCP/IP Ethernet Ports[d] Use of IEC 60870-5-104 Protocol to communicate with the Master Station[s][e] Use of MODBUS over RS485 interface, Protocol to communicate with the MFTs, Protection Relay.[f] Have required number of Communication Ports for simultaneous communication with Master Station[s], MFTs.[g] FRTU shall have the capability of Automatic Start-Up and initialisation following restoration of Power after an outage without need of manual intervention. All restarts shall be reported to the connected Master Stations. |
| 15 | [h] Remote Database downloading of FRTU from Master Station from SCADA/DMS Control Center.[i] Internal Battery Backup to hold Data in SOE Buffer Memory & also maintaining the Time & Date.[j] Communication with at least Four Master Stations simultaneously on IEC 60870-5-104[k] RTU shall be capable of Acquiring Analog Values through Transducers having output as 4-20 mA, 0-10 mA, 0-+10 mA etc using Analog Input Modules.[l] FRTU shall have one TCP/IP Ethernet Port for communication with Master Station[s] using IEC 60870-5-104 Protocol.[m] FRTU shall have one Serial RS 485 Port for communication with MFTs and connected in daisy chain using MODBUS Protocol. Minimum 15 Analog Values [Including 4 Energy Values] shall be considered per energy meter.[viii] Connection with adjacent modules shall be direct through busbar via metering bushing or through MV cables. VT’s and CT’s from the manufacturer conforming to IEC61869-3 and IEC 61869-2 respectively shall be accepted.Note: [a] The make of Vacuum Interrupter, FRTU offered shall be of the same make as of the Ring Main unit.[b] An operator situated in front, lateral and rear [A-FLR 21kA – 1 Sec, Downwards Exhaust, for Tank as well as Cable Compartment] of the RMU Switchboard during an internal fault shall not be exposed to the effects of Arcing. Internal Arc Type Test Report for IAC AFLR 21 kA for 1 Sec for both Tank & Cable Box shall be for minimum 6 Way / 6 Function RMU.[c] All operations shall be from front of the RMU, including access to cable bushings. Bushings along the sides or the rear of the RMU are not acceptable. |
| 16 | [d] Construction of Plinth / Foundation for 11KV RMU: The rate quoted is deemed to be including the cost of Plinth / Foundation and shall be paid extra on this account. The foundation shall consists of Two Parallel Brick Walls built using Fly Ash bricks straight or curved on plan to any radius built in Cement Mortar 1:6 of length 2.10m, suitable thickness and height as per the manufacturer’s instructions over PCC Concrete Bed of 150mm thick in PCC 1:4:8, Type D-2, using 40mm graded stone aggregate over 150mm thick Hardcore of gauge not exceeding 63mm of broken stones or boulders, deposited, spread and levelled in layers not exceeding 15 cm thick watered and rolled, over 150mm thick Sand Bed, rendering to brick surfaces, 15 mm thick in Cement Mortar 1:4, and finishing the top surface even and smooth without using extra cement, applying Three coats of white washing including earthwork excavation of pit size 2.10 X 1.20 X 0.60 Metres complete all as per manufacturer’s recommendations, drawings, as specified and as directed. |
| 17 | Supply, erection, testing and commissioning of minimum 15 meter high mast system with its accessories. Mast shall be in two/three sections, hot dip galvanized and suitable for wind velocity 70 M/ sec as per IS 875 part 3. It shall consist of GI lantern carriage suitable for 8 luminaries symmetrically & their control gear boxes and lighting finial, double drum winch with both motor and manual operation, suspension system with SS wire rope 6mm dia (7/19 construction), trailing cable of flexible copper conductor cable 5 core 2.5sq.mm (minimum), torque limiter adjustable type & provision of 01 No. aviation obstruction light (LED type) complete. The mast shall have an integral power tool with reversible option installed inside the base compartment for its operation complete all as specified and directed by Engr-in-Charge. (a) MAST STRUCTURE:- The high Mast shall be of continuously tapered, polygonal cross section polygon type (Minimum 16- Sides) of 15/16 Mtrs. in height presenting good visual appearance and shall be based on proven design to given assured performance, reliability and service. The Mast shall have an approximate top diameter of say 150 mm to 200 mm and bottom diameter of 350 mm to 450 mm, The weight of the Mast shall not exceed more than 1600 kgs, excluding weight of Luminaire, to maintain good elasticity of slender structure. |
| 18 | (b) MAST CONSTRUCTION :- The Mast shall be fabricated from special steel plates of BS EN 10025 grade, cut and folded to form polygonal section and shall be telescopically jointed and fillet welded. The welding shall be in accordance with BS: 5135. The procedural weld geometry and the workmanship shall be exhaustively tested by the radiography on the completed welded and certificates submitted. The Mast shall be delivered in only 2 sections without any circumferential welding at site, which shall be joined together by slip-stressed-fit method. The joining shall be with stressing equipment, thus forming the sleeve joint. No site welding or bolted the joint will be accepted. The overlap distance shall have full penetration of longitudinal welds. The base plate of the mast shall be at least 25 mm. thick. An adequate door opening min 1400mm x 300mm shall be provided at base of each mast such as to permit clear access to equipment like winches, cable pug and socket, etc. The opening shall be complete with a close fitting vandal resistant, weather-proof door provided with a heavy duty lock. For metal protection of the Mast, the entire fabricated Mast shall be hot dip galvanised internally and externally, having minimum average thickness of 65 microns. |
| 19 | (c) DYNAMIC LOADING:- The Mast structure shall be designed for an assumed maximum reaction arising from the maximum wind speed at Mendhar and measured at a height of 10 Mtrs. above ground level . The design life of the Mast shall be min. 25 years. Wind excited oscillation shall be damped by the method of construction and adequate allowance made for the related stresses. The offered High Mast shall be a tested design. |
| 20 | (d) FOUNDATION:- The tenderer shall see the site closely and minutely with regard to the nature of the soil, average depth of decomposed garbage and debris at proposed Mast locations and the other site conditions before working out the type of foundation and specifications for the proposed High Mast. The tenderer shall be responsible for the design of the foundation and safe erection and installation of the High Mast in mechanically and structurally safe working condition for the design life of the Mast as per manufacture design The load bearing (safe) capacity of the soil shall be indicted by purchaser to decide the type of foundation and its specifications. The holding down bolts shall be at least 20 nos. of high tensile strength and shall be supplied complete with anchor plate of 6 mm thick for casting into the foundation. The ensure correct vertically and horizontality of bolt alignment. (Note : Cost of foundation as per specification of manufacturer shall be deemed to be included in the rate quoted by the contractor) |
| 21 | (e) LANTERN CARRIAGE:- The fabricated lantern carriages shall be provided for holding fittings and control gear provided on each High Mast. The lantern carriage shall be of special design and of durable steel tube construction designed to act as electric conduit with cable holes fully protected by grummets. The diameter of the lantern carriage shall be suitable so as to hold designed number of LED floodlight fittings, as specified in the tender design along with the control gear boxes and lantern. The lantern carriage shall be fabricated in three parts joined by bolted flanges with SS bolts with nuts to enable easy removal from the erected mast for replacement/ maintenance purpose. The carriage shall be supported/ suspended by three wire ropes for better stability. The lantern carriage Assembly shall not touch the lower surface of the Mast. The carriage design and fabrication shall be such that the lantern carriage will suit the lanterns and their control gear boxes to be used in the work. The Lantern Carriage shall be so installed that it does not cause any damage to the surface of the Mast and is provided with protective buffer arrangement. The complete Lantern carriage shall be hot dip galvanised after fabrication. The weather - proof cast aluminum junction boxes (IP-66) shall be provided on the Lantern carriage assembly from which the inter- connections will be made to the designed number of floodlight fittings and lanterns on the carriage. |
| 22 | (f) MECHANICAL ARRANGEMENT:- For installation and maintenance purpose, it will become necessary to raise or lower the lantern carriage assembly. To enable this, a suitable winch arrangement shall be provided in the base of the Mast, complete with top pulley, winch stainless steel wire ropes and winch driving power tool. (i) WINCH:- The winch shall be of completely self-sustaining type. the winches shall be of self- sustaining type by means of an oil bath and the lubrication shall be of recommended quality. Termination of the ropes of the winch shall be in such a way, that it does not involve distortion or twisting of the rope configuration. At least 6 turns of rope shall remain in tension on the drum even when the lantern carriage is fully lowered. the winch shall be designed to be installed or removed form the door opening at the base of the mast. The winch drums shall be grooved to ensure mechanically strong, stable and tidy rope lay with no chances of rope slippage or skippage. The winch shall be capable of operation by hand or by means of external power tool. Integrated power tool with worm is not acceptable. A test certificate shall be supplied along with each winch in support of the maximum load operated by the winch and for the safety of operation at the full load rotation. A handle shall also be provided for hand operation of the winches. |
| 23 | (ii) TOP PULLEY ASSEMBLY:- The top pulleys shall be of a diameter, appropriately large enough to accommodate the steel wire ropes and the multicore electric cable. The material of construction of the pulley blocks shall be non- corrosive and made of dia cast (LM-6) aluminum alloy. The pulley assembly shall be complete with self lubricating bearing and stainless steel spindle. (iii) STAINLESS STEEL WIRE ROPES:- Stainless steel wire shall be AISC 316 grade 7/ 19 construction 2 Nos ropes for winch and 3 Nos for lantern carriage, 6 mm dia having a breaking load capacity of 2350 kg complete with stainless steel thimbles. The end for connection to the winch drum shall be fitted with thimbles and the thimbles shall be secured by copper compression splices. |
| 24 | (g) CABLE AND CABLE CONNECTIONS :- The connections shall be made with flat core flexible round sheath power cables of appropriate rating as per the schedule. The base compartment of the High Mast shall have one terminal box for terminating the incomer cable. The maintenance cables equal to that within the Mast and fitted with travelling cable 5 core 4 sqmm flexible having plug socket shall be provided to energize lanterns while in lowering position by hooking up at the base compartment socket supply. Similarly, the provision shall be made for electric supply at the base compartment to enable operation of the external power tool for lowering or rising of the lantern carriage assembly. The trailing cables of the lantern carriage rings shall be terminated by means of metal cased plug and socket provided in the base compartment to enable flexibility. |
| 25 | (h) WINCH DRIVING POWER TOOL :- The electric driven tool shall be single speed, (1.2 Mt/min) reversible three phase & hand operated motor. The power tool shall be complete with very robust remote control switch such that the tool can be operated from safe distance of 5 Mtrs. There shall be and arrangement for self alignment off power tool which can be self supported during operation. Manual handle shall be provided for hand operation of the winches. The capacity rating and speed of the electric motor used in the power tool shall be specified by the tenderers. (j) LIGHTNING FINIAL & AVIATION OBSTRUCTION LIGHTS:- One number heavy duty hot dip galvanised lighting finial shall be provided for each mast. Suitable aviation obstruction lights of reliable design and reputed manufacturer shall be provided on top of each mast. |
| 26 | Note : Contractor should procure and provide 50 % of the material as listed above within 15 days of the placing of work order and shall be verified by the Engr-in-charge. Please Enable Macros to View BoQ information |
