PROVISION OF HT SUPPLY TO NORTH JETTY FROM G SUBSTATION AT NSRY (KOC) NAVAL BASE KOCHI

Amount

Supply, install, connecting up existing cables, testing and commissioning of HT 12 KV rated voltage and 11 KV operating voltage, 21 kA for 3 seconds, 3 phase 50 Hz,IP 54, SCADA compatible,motorised, three way Ring Main Unit (+CVV+) at G Substation comprising Two number vacuum circuit breakers duly interlocked as Outgoings and one number motorised load break isolator as Incoming , battery chargers, totally enclosed metal clad switch gear with motorized 24 volt DC battery bank and charger, protection relays, having rated current of Ring Switch and Breaker is 630 Amp, both side extensible, with internal arc classification with AFLR with 21 kA for one second, copper bus bar with danger notice board, with factory made weather proof enclosure by the switchgear manufacturer and connecting existing cables to new RMU. The unit shall be painted in RAL7012/7035 paint shade with folowing specifications and all as per theIEC 60298,IEC 60265, IEC 60129,IEC 60420,IEC 60056,IEC 60694 and as per the specification of the manufacturer of Make : SIEMENS / ABB/SCHNEIDER.

(a) Ring Switch/Isolator (i) Capacity 11 KV, HT, 630 Amps. Triple pole, single break, having three position ('ON', 'OFF' and 'EARTH') Ring Main Switches, each with independent motor charged spring mechanism and fully rated earth switch. (ii) Air insulated cable boxes with gland plate suitable for bottom entry of single run of three core cable up to 300 sqmm. (iii) Cable Bushings (iv) Capacitive Voltage Indicator with LED Display. (v) Mimic diagram on front panel, complete with status indicators (ON-OFF-EARTH). (vi) Actuator Kit for motorised operation. (vii) One set of Potential Free contacts for SCADA Compatibility. (viii) Fault Passage Indicators (ix) One set of Right Angle Boots-NON TOUCH PROOF

(b) Vacuum Circuit Breaker : (i) Capacity 630 Amps, Triple pole, Vacuum Circuit Breaker, with independent motor charged spring mechanism and fully rated earth switch, with provision for earth of the cable. (ii) Air insulated cable box with gland plate suitable for bottom entry of single run of 3-core cable up to 300 sqmm. (iii) multi powered Over current, Earth Fault and short circuit three element numerical Relay with digital display(iv) Resin cast current transformers for protection mounted on Cable / cable box of ratio 60-30/1A, 5P10, 2.5VA. (v) Capacitive Voltage Indicators with LED Display. (vi) Mimic diagram on front panel, complete with status indicators (ON-OFF-EARTH). (vi) Motorised assembly. (vii) Epoxy Moulded low energy Tripping Coil for tripping the circuit breaker in fault condition. (viii) Right Angle Boots-NON TOUCH PROOF. (ix) Make of RMU and VCB bottles to be same.

(c) General spacifications : (i) One set of positive standard mechanical interlocks to avoid unsafe operations. (ii) Provision of pad locking for open, close, earth position in correct sequence. (iii) Mano meter for indicating SF6 gas pressure with green and red zone. (iv) Three mm thick stainless steel SF6 tank with robotically welded construction with IP67 protection. (v) External stud for earthing connections. (vi) SF6 Gas re filling provision. (vii) Extendable bushings future for future extension with metallic end cap cover. (viii)Battery with charger (ix) Necessary foundation for RMU, weather protection roofing using galvolume sheet to be deemed in the quoted rate. Note:- Testing and Commissioning of RMU should be carried out by OEM rep at the site in presence of Engineer-in-charge.

Supply, install, connecting up existing cables, testing and commissioning of HT 12 KV rated voltage and 11 KV operating voltage, 21 kA for 3 seconds, 3 phase 50 Hz,IP 54, SCADA compatible,motorised, three way Ring Main Unit (+CVV+) at North Jetty Power House comprising Two number vacuum circuit breakers duly interlocked as Outgoings and one number motorised load break isolator as Incoming , battery chargers, totally enclosed metal clad switch gear with motorized 24 volt DC battery bank and charger, protection relays, having rated current of Ring Switch and Breaker is 630 Amp, both side extensible, with internal arc classification with AFLR with 21 kA for one second, copper bus bar with danger notice board, with factory made weather proof enclosure by the switchgear manufacturer and connecting existing cables to new RMU. The unit shall be painted in RAL7012/7035 paint shade with folowing specifications and all as per theIEC 60298,IEC 60265, IEC 60129,IEC 60420,IEC 60056,IEC 60694 and as per the specification of the manufacturer of Make : SIEMENS / ABB/SCHNEIDER.

(a) Ring Switch/Isolator (i) Capacity 11 KV, HT, 630 Amps. Triple pole, single break, having three position ('ON', 'OFF' and 'EARTH') Ring Main Switches, each with independent motor charged spring mechanism and fully rated earth switch. (ii) Air insulated cable boxes with gland plate suitable for bottom entry of single run of three core cable up to 300 sqmm. (iii) Cable Bushings (iv) Capacitive Voltage Indicator with LED Display. (v) Mimic diagram on front panel, complete with status indicators (ON-OFF-EARTH). (vi) Actuator Kit for motorised operation. (vii) One set of Potential Free contacts for SCADA Compatibility. (viii) Fault Passage Indicators (ix) One set of Right Angle Boots-NON TOUCH PROOF

(b) Vacuum Circuit Breaker : (i) Capacity 630 Amps, Triple pole, Vacuum Circuit Breaker, with independent motor charged spring mechanism and fully rated earth switch, with provision for earth of the cable. (ii) Air insulated cable box with gland plate suitable for bottom entry of single run of 3-core cable up to 300 sqmm. (iii) multi powered Over current, Earth Fault and short circuit three element numerical Relay with digital display(iv) Resin cast current transformers for protection mounted on Cable / cable box of ratio 60-30/1A, 5P10, 2.5VA. (v) Capacitive Voltage Indicators with LED Display. (vi) Mimic diagram on front panel, complete with status indicators (ON-OFF-EARTH). (vi) Motorised assembly. (vii) Epoxy Moulded low energy Tripping Coil for tripping the circuit breaker in fault condition. (viii) Right Angle Boots-NON TOUCH PROOF. (ix) Make of RMU and VCB bottles to be same.

(c) General spacifications : (i) One set of positive standard mechanical interlocks to avoid unsafe operations. (ii) Provision of pad locking for open, close, earth position in correct sequence. (iii) Mano meter for indicating SF6 gas pressure with green and red zone. (iv) Three mm thick stainless steel SF6 tank with robotically welded construction with IP67 protection. (v) External stud for earthing connections. (vi) SF6 Gas re filling provision. (vii) Extendable bushings future for future extension with metallic end cap cover. (viii)Battery with charger (ix) Necessary foundation for RMU, weather protection roofing using galvolume sheet to be deemed in the quoted rate. Note:- Testing and Commissioning of RMU should be carried out by OEM rep at the site in presence of Engineer-in-charge.

Supply and laying in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (Earthed heavy duty) with aluminium conductor, 11000 volts, grade having cross sectional area 3 core 240 sqmm all as specified.

Supply and fixing of cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for XLPE armoured aluminium conductor cable of size 240 sqmm to 300 sqmm x 3 core all as specified. Make : 3M M-seal / Raychem / Denson / Cab Seal

Materials and labour for earthing complete with galvanised iron earth plate electrode 600 mm x 600 mm x 6 mm thick, burried directly and preferably vertically in ground, earth pit not less than 2.25 Mtr deep below ground level with top edge of the plate not less than 1.5 m below ground level connetced with galvanised strip of size 32 x 6 mm by means of nuts, bolts, check nuts and washers made of galvanised iron or steel earthing lead to be protected by galvanised iron pipe 40 mm bore (medium grade) and other end connected to earthing test point or lightening arrestor or main controlling switch as directed including providing funnel with 20mm bore galvanised iron pipe (light grade), wire mesh, charcoal or coke and common salt in alternate layer of 15cm (compacted thickness) all round the earth electrode, concrete earth pit in PCC (1:3:6) type C-1 (with 20mm graded aggregate), 50mm thick precast RCC (1:2:4) cover slab (re-inforced with 8mm dia TMT bar @ 15 cm C/C bothways and suitable handle made of 10mm dia) including necessary earth work in excavation, returning filling and removal of surplus earth upto a distance not exceeding 50 m etc all as shown on electrical plate No. 3 of MES Schedule Part-I(2009) complete including testing on completion all as specified and as directed. NOTE :- (i) Cost of GI pipe 40 mm and GI strip for length of upto 7.5 RM shall deemed to be included in the quoted rate and over and above shall be measured and paid separately.

S&F cable route indicator over the HT cables made out of cast iron block of size 15x10 cm and thicknes 10 mm fixed with MS strip of size 32x4 mm upto length 75 mm and marked with 'MES HT Cable 185 /240 /300 Sqmm ' as required on cast iron block including necessary PCC and earth work etc complete all as directed.

Lateral thrust boring (Horizontal Direct Drilling) of holes in all classes of soil suitable for inserting 110 mm dia HDPE Pipes to lines and levels up to a depth of 3 meters without damaging any existing underground utilities fixing 110 mm, PE100,PN8,ISI 4892 HDPE pipe in the bore hole made as per the direction of Engr- in- charge at site for drawing of UG Cable including hire charges for tools and plants, conveying and erecting machinery for the lateral thrust boring and removing the same from the site after completion of the work including loading and unloading and supply and running of 110mm HDPE pipe all as directed.

Supply and laying cables in trenches, or fixing on walls or passing through cable duct / pipe XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavyduty) with aluminium conductor, 1100 volts, grade having cross sectional area 2 core 6 sqmm all as directed.

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth and getting out in soft / loose soil for laying/removal/identifying the fault/relaying of cable etc all as specified and directed.

Returning , filling ,in including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick in soft / loose soil complete all as specified and directed.

Removing excavated soil to a distance not exceeding 50 metre and depositing where directed at a level, not exceeding 1.5 metre above the starting point complete all as specified and directed.

M&L for riddle soil cushioning (dry) in trenches for protection of UG cable(below, above and around the UG cable laid of 23 cm spread thickness i.e 8 cm in depth before laying the cable and 15 cm in depth after laying the cable) and consolidated (punned) upto 180 mm thickness complete all as specified and directed. Note:- Punned thickness only shall be measured for the purpose of payment.

Supplying and laying un-reinforced precast concrete cable cover, class HV, type 1, flat size 300 mm x 180 mm x 40 mm. laid in trenches for protection of cable all as specified ,.

M & L 150 mm bore High density polyethylene pipes (HDPE) PN 10 laid in trenches/Wall/road crossing for suitable length as per sire requirement all as specified.

Material and labour for earth continuity conductor or main earthing strip fixed to wall on batten or porcelain insulators or recess or chases or buried in ground or drawn in GI pipe 40 mm or fixed with poles or any other indicated sitution for loop earthing etc as required using galvanised iron strip of size 32 X 6 mm complete all as directed. NOTE :- (i) GI Pipe 40 mm shall be measured and paid separately

M & L 40 mm bore MS tubes light grade galvanised, with all fittings laid in trenches or walls or for passing earth strip, etc , complete all as specified

Cutting into existing bituminous carpet road/ PCC hard standing/ tiles for laying of pipes/ UG cables, re filling, ramming and making good the disturbed surfaces with cold mix bitumen/ PCC hard standing/ Tiles to match with the existing complete all as directed.

IMPERIAL ENGINEERING COMPANY (BID ID -3451003)

ABM ELECTRICALS (BID ID -3452562)

Green Ray Enterprises (BID ID -3449267)

Linsta Services (BID ID -3452413)

M/s.Rejoy Constructions (BID ID -3455094)