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| 1 | Taking down oldMS cross arms, supports, etc from four pole structure by removing nuts, bolts, etc complete all as specified and directed. |
| 2 | Taking out old HT cables carefully after disconnecting the cable from two pole/ four pole structure for reconnectingthe same in RMU /Transformer complete all as specified and directed. |
| 3 | M&L for dismantling old four pole structure andtaking down the existing transformer carefully and safely with the help of crane, chainpully, etc. & installation of the transformer on newly constructed PCC platform with roller & stopper, etc remarking of old poles outside Subroto Park complete all as specified and directed.(Note:- 1. Two no of four pole to be removed and only one number of transformer to be removed and installed on new PCC platform.2. Cost of PCC platform is deemed to be included in the quoted rate) |
| 4 | Supply, installation, testing & commissioning of 11 KVoutdoor type (IP54) RMUdust and vermin proof, with locking arrangement, duly powder coated, totally enclosed, free standing floor mounting type, compartment basedtype one side-extendable 3-way Ring Main Unit floor mounted with internal copper bus bars, consisting of 3 nos. fixed type motorised Vacuum Circuit Breaker (2 Incoming & 1 Outgoing) with additional BUS PT metering module. All live parts, bus bars,VCBs connections of RMU should be enclosed in SF6 insulated stainless steel enclosure (2 mm thick, SS304 grade) one tank to avoid multiple interconnections & sealed for life robotically welded non magnetic having IP67 degree of protection filled with SF6 gas as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200.The unit shall have front cable entry for ease of installation and shall have site replaceable bushings for ease of troubleshooting during breakdown. RMU should be complete with all accessories such as Terminal kits suitable for 1Cx300sqmm Cable, VPIS, cable supports, all front cable terminations, mechanical indications for Load break switch ON/OFF, Manometer as per with IEC standards 62271-200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120. Bushings bolted type top mounted outside the tank for connection of external bus bar .The unit shall include the following with all necessary standard fitting required at site. RMU, Breaker & VI Shall be of same make for easy maintenance.Make of RMU: ABB, SIEMENS, SCHNEIDER INFRA. (RMU shall be manufactured by OEM itself & not by thefranchise / license partner )Each VACUM CIRCUIT BREAKER of RMU630A VCB module for making& breaking of fault current alongwith Earth Switch of full making capacity-1 Nos.Motor operated 630 A Vacuum circuit breaker having spring stored mechanism.Three position disconnector/earthing switch downstream vacuum circuit-breaker.Three position single spring mechanism for disconnector/earthing switch“Live Cable” LED Indicators thru Capacitor Voltage Dividers mounted on the bushings.Short time breaking current - 21KA/ 3 secMaking Capacity - 52.5KA |
| 5 | Ser No 4.00 contd...VCB must confirm operating sequence 0-0.3sec-CO-3Min-CO and suitable for 10000 mechanical operation.Power frequency withstand voltage - 38KVImpulse withstand voltage - 95KVNominal operating gas pressure - 1.4 Bar abs.Front cover mechanism - IP2XElectrical and mechanical interlock to keep always one incomer ON & another Incomer OFF.Green(ON)/Red(OFF) push buttons to operated VCB.3O/C + 1E/F Self powerednumerical protection relay with Low and High set for Over current and Earth Fault.Auxiliary relays for OTI,WTI,Bucholz -Alarm & Trip for Outgoing VCBs.1 x Lockout relays (86) for Transformer protection scheme..Multifunction meter.RMU Gas Tank and cable chamber should be tested for an internal arc fault of 21kA for 1 sec with AFLR classificationResin cast ring core protection CT on cables 100-50/1A, 5P10, 2.5 VA - 3 Nos Resin cast ring core metering CT on cables 100-50/1A, Cl-1.0, 2.5 VA - 3 NosMechanical ON/OFF/EARTH/Spring charge IndicationCable boxes should be Arc Proofinterlocked with respective Earthing Switches.Bus Connected equipment / metering cubicle consisting of following3 nos. Single Phase PTs - 11kV/V3/110/V3 ,Cl-1.0 ,20VA1 nos. Single Phase Aux PTs - 11kV/230V ,500VASpace Heater with thermostatTerminal BlocksBattery/Charger-Minimum 12AH Capacity, 24V DC . Input Voltage of 230VAC from Aux PT Hooter. |
| 6 | Supply, installation, testing & commissioning of 11 KVoutdoor type (IP54) RMUdust and vermin proof, with locking arrangement duly powder coated, totally enclosed, free standing floor mounting type, compartment basedtype one side-extendable 5-way Ring Main Unit floor mounted with internal copper bus bars, consisting of 5 nos. fixed type motorised Vacuum Circuit Breaker (3 Incoming & 2 Outgoing) with additional BUS PT metering module. All live parts, bus bars, VCBs connections of RMU should be enclosed in SF6 insulated stainless steel enclosure (2 mm thick, SS304 grade) one tank to avoid multiple interconnections & sealed for life robotically welded non magnetic having IP67 degree of protection filled with SF6 gas as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200.The unit shall have front cable entry for ease of installation and shall have site replaceable bushings for ease of troubleshooting during breakdown. RMU should be complete with all accessories such as Terminal kits suitable for 1Cx300sqmm Cable, VPIS, cable supports, all front cable terminations, mechanical indications for Load break switch ON/OFF, Manometer as per with IEC standards 62271-200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120. Bushings bolted type top mounted outside the tank for connection of external bus bar .The unit shall include the following with all necessary standard fitting required at site. RMU, Breaker & VI Shall be of same make for easy maintenance.Make of RMU: ABB, SIEMENS, SCHNEIDER INFRA. (RMU shall be manufactured by OEM itself & not by thefranchise / license partner )Each VACUM CIRCUIT BREAKER of RMU630A VCB module for making& breaking of fault current alongwith Earth Switch of full making capacity-1 Nos.Motor operated 630 A Vacuum circuit breaker having spring stored mechanism.Three position disconnector/earthing switch downstream vacuum circuit-breaker.Three position single spring mechanism for disconnector/earthing switch“Live Cable” LED Indicators thru Capacitor Voltage Dividers mounted on the bushings.Short time breaking current - 21KA/ 3 secMaking Capacity - 52.5KA |
| 7 | Ser No 5.00 contd...VCB must confirm operating sequence O-0.3sec-CO-3Min-CO and suitable for 10000 mechanical operation.Power frequency withstand voltage - 38KVImpulse withstand voltage - 95KVNominal operating gas pressure - 1.4 Bar abs.Front cover mechanism - IP2XElectrical and mechanical interlock to keep always one incomer ON & another two Incomer OFF.Green(ON)/Red(OFF) push buttons to operated VCB.3O/C + 1E/F Self powerednumerical protection relay with Low and High set for Over current and Earth Fault.Auxiliary relays for OTI,WTI,Bucholz -Alarm & Trip for one Outgoing VCBs.1 x Lockout relays (86) for Transformer protection scheme for one outgoing VCB..Multifunction meter.RMU Gas Tank and cable chamber should be tested for an internal arc fault of 21kA for 1 sec with AFLR classificationResin cast ring core protection CT on cables 100-50/1A, 5P10, 2.5 VA - 3 Nos Resin cast ring core metering CT on cables 100-50/1A, Cl-1.0, 2.5 VA - 3 NosMechanical ON/OFF/EARTH/Spring charge IndicationCable boxes should be Arc Proofinterlocked with respective Earthing Switches.Bus Connected equipment / metering cubicle consisting of following3 nos. Single Phase PTs - 11kV/V3/110/V3 ,Cl-1.0 ,20VA1 nos. Single Phase Aux PTs - 11kV/230V ,500VASpace Heater with thermostatTerminal BlocksBattery/Charger-Minimum 12AH Capacity, 24V DC . Input Voltage of 230VAC from Aux PT Hooter. |
| 8 | Excavating in trenches in hard / dense soil not exceeding 1.5 m wide and not exceeding 1.5 m in depth for foundation, laying of cable etc not exc 10 Sq mtr on plan and not exc 1.5 mtr in depth and getting out complete all as specified and directed. |
| 9 | Returning , filling in , including spreading, levelling, watering and wellramming in layers not exceeding 25 cm thick in hard/dense soil complete all as specified and directed. |
| 10 | Removing excavated surplus soil to a distance upto 50m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and directed. |
| 11 | Supply and laying un-reinforced precast concrete cable cover, class HV, type-I, flat, size 300 mmx180mmx40mm complete all as specified and directed. |
| 12 | Material and labour for sand cushioning by using fine sand ( Jamuna dry and clean sand ) in two layers , first layer of 80mm thick before laying of cable and second layer of 150mm thick after laying of cable complete all as specified and directed.Note: Only punned thickness shall be measured and paid. |
| 13 | Supply & Laying GI pipe, light grade, 80mm bore, for cable protection with all fittings for passing the underground HT cable under road crossing along poles walls and floors complete all as specified and directed. |
| 14 | Disconnecting and taking out existing unserviceable defective HT cable, any size, any type from trenches / duct / poles including taking out old bricks/cable covers complete all as specified and directed. |
| 15 | Supply, Laying, Testing and Commissioning for XLPE insulated, screened PVC bedded, galvanized wire, armoured, electric power cable, heavy duty, with aluminium conductor 11 KV (E) grade, cross sectional area 120 Sqmm x 3 core confirming to IS-7098 ( Part II ) ( amended upto date ) complete all as specified and directed. |
| 16 | Dismantling of old U/S cable joints kit of any type and Material and labour for cable jointing kit for 11 KV (E) grade cable for indoor termination Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed. |
| 17 | Construction of Platform of size 2.0x2.0x1.5m incl excavation in trenches in soft/loose soil, 200mm thick PCC 1:4:8 type D-2 in fdn, RFR, filling under floor duly spreading, leveling, ramming, 150mm thick PCC 1:3:6 over 200mm hardcore, finished the top surface with 75mm thick PCC 1:2:4 type B-1 finished even and smooth using extra cement, Wall finished with 15mm thick plastering in CM 1:4 with WPC, finished the surface even and smooth and apply two coats of cement base paint over a coat of alkali resistance primer, a 750mm wide plinth protection 75mm thick in PCC 1:3:6 type C-1 shall be provided complete all as per drawing and directed by Engineer-in-Charge and shown on drawing. |
| 18 | M&L in replacement for earthing complete with galvanized mild steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground (earth pit not less than 2.25 Mtr below ground level) with top edge of earth plate not less than 1.5 Mtrs below ground level connected to galvanised iron 32×6mm strip as earthing lead by means of nuts, bolts, thimbles, chuck nuts, washers of GI or steel, including PCC (concrete chamber) shall be PCC 1:3:6 type C-1 using 20mm graded stone aggregate, with fair finish internal surface of concrete chamber shall be given 15mm thick plaster in CM 1:4, funnel with wire gauge mesh, 80 mm thick RCC pit cover 320 mm x 320 mm of RCC 1:2:4 type B-1 using 20 mm graded stone aggregate reinforced with MS bar 8mm C/C 100mm MS handle made of 10mm MS bar and charcoal dust and common salt all as shown in electrical plate No 3 of MES SSR Part-I and specified includingprovision of GI stripprotected by 40 mm dia light grade pipe and watering pipe shall be 20mm bore light grade, and including all excavation andearthwork & connecting the earthing to an earthing test pointcomplete all as specified & directed by Engr-in-Charge.Note: The rate is inclusive of earthwork and excavation in any strata, PCC chamber in PCC 1:3:6 type C-1, RCC cover slab 50mm thick with 8mm dia TMT bars both ways at 140mm centre to centre. |
| 19 | M&L for Chain Link Fencing with and including excavation in post holes (or similar holes) each n.exc. 0.5 Cum, getting out, returning filling in and ramming earth or broken rubble mixed with earth around, in layers n. exc. 25 cm, watering and removing surplus soil and making surface good in soft / loose soil.Cement concrete in foundations, filling and mass concrete in type C-2 1:3:6 (using 40mm graded stone aggregate). Rolled Mild Steel in Joist, channel, angle, or tee sections, fixed independently, without connecting plates, etc. (cut to ordinary lengths i.e. within 20mm of the length indicated) confirming to Fe 290 Gde E-165. MS screw bolts ( machine made) with hexagonal or square head at one end screwed the other end or screwed both ends.Each screwed end to be fitted with washers and one hexagonal or square nut, length of bolt n.exc. 10 cm.50x50mm mesh size for covered the 11 KVsubstation of 12m length and 2.1m high with 4mm GI wire incl 04 Nos of 10mm dia tie round bars, securing with 12mm dia 100mm long bolts @ 04 Nos at each post alongwith 50x6mm FI with 5 Nos of 65x65x6mm angle iron post embedded in PCC 1:3:6 of foundation size of1.2x0.50x0.60mand provision ofFramed work as in doors or Gates of Angle or other section with gusset plates, Rails, braces etc complete including drilling for fixing of steel sheeting or other covering also fastening and fixing complete of Grade Fe 410-O MS steel gate of size 2.0 x 2.0m, bottom portion covered with 1.60mm thick MS black sheet and painting work for fencing and gate with two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and as directed by Engr-in-Charge. |
| 20 | M&L for cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed. |
