SPECIAL REPAIR FOR REPLACEMENT OF BER HT PANELS IN CERTAIN SUB STATIONS AT NAVAL BASE KOCHI

Amount

HT 11 KV, indoor, IP 4X, 630 Amp, 350 MVA,3 phase 50 Hz, single panel (total 01 No VCBs) and totally enclosed CRCA metal clad VCB with 2mm thickness enclosure , aluminium bus bar of suitable capacity, SCADA compatible totally enclosed and fully interlocked Horizontal isolation, horizontal draw out type breaker as per IEC : 62271-100/200. Single break trip free breaker with motor operated spring charged mechanism, mounted on a truck carriage complete with self contained operated fully interlocked rack in and rack out mechanism. Breaker is featured with machanical ON & OFF indicator with hand trip device, 24V DC close and trip coil including battery charger and batteries, auxilary switch of 6 NO+6NC with numerical IDMT over current & earth fault relay with high set for incomer and outgoing & IEC61850 communication port,indication lamps, Multi function meter with RS 485 port and master trip relay and draw out trolley etc including dismantling of old OCB panel and deposit to MES store and connecting existing cables to new HT panel all as per the direction of the engr-in-charge. Make : ABB/ siemens / CG with following CTs and PTs. (a) Resin cast PTs should be 11KV / /3 / 110 / /3, class 0.5, 100 VA and CTs have 2 core, 100/50 - 100/50/5-5, class 0.5 / 5P10, 30 VA

HT 11 KV, indoor, IP 4X, 630 Amp, 350 MVA,3 phase 50 Hz, one incoming, six outgoing (total 7 Nos VCBs) and totally enclosed CRCA metal clad VCB with 2mm thickness enclosure , aluminium bus bar of suitable capacity, SCADA compatible totally enclosed and fully interlocked Horizontal isolation, horizontal draw out type breaker as per IEC : 62271-100/200. Single break trip free breaker with motor operated spring charged mechanism, mounted on a truck carriage complete with self contained operated fully interlocked rack in and rack out mechanism. Breaker is featured with machanical ON & OFF indicator with hand trip device, 24V DC close and trip coil including battery charger and batteries, auxilary switch of 6 NO+6NC with numerical IDMT over current & earth fault relay with high set for incomer and outgoing & IEC61850 communication port, Multi function meter with RS 485 port and master trip relay with each incoming and outgoing and draw out trolley etc including dismantling of old OCB panel and deposit to MES store and connecting existing cables to new HT panel all as per the direction of the engr-in-charge. Make : ABB/ siemens / CG with following incomings and outgoings :-

(a) HT 11 KV, 630 Amp, 350 MVA,3 phase 50 Hz, VCB, Incomer Resin cast PTs should be 11KV / /3 / 110 / /3, class 0.5, 100 VA and CTs of 300/150 - 300/150/5-5, class 0.5 / 5P10, 30 VA with all indication lamps and protection relay. (b) HT 11 KV, 630 Amp, 350 MVA,3 phase 50 Hz for Outgoings with all indication lamps and protection relay (i)CTs of 200/100-200/100/5-5, 2 core, class 0.5 / 5P10, 30 VA - 06 Nos Note for item No. 1,to 3:- HT panels should be tested at switchgear OEM factory by the rep of Accepting officer.

Supply, install, testing and commissioning of outdoor, both side extendable 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 (+CCV+) Type : one fixed vacuum circuit breaker duly interlocked, and two load break motorised isolators, battery charger, totally enclosed metal clad switch gear 24 volt DC battery bank and charger, protection relays, having rated current of Ring Switch and Breaker is 630 Amp, copper bus bar with danger notice board and with internal arc classification with AFLR with 21 kA for one second including dismantling of old OCB panel and deposit to MES store and connecting existing cables to new RMU. The unit shall be painted in RAL7012/7032/7035 paint shade with folowing specifications and all as per the IEC 62271 –200. Make: ABB/SIEMENS/Lucy. (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) Motorised assembly (vii) Fault Passage Indicator (viii) 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 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. (c) General specifications : (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) Minimum 2.5 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 for future extension with metallic end cap cover. (viii)Battery with charger.

Supply, Laying, connecting up and testing cable XLPE insulated galvanised steel strip or wire armoured electric power cable with stranded aluminium conductor 11000 V grade (Earthed) of size 185 sqmm 3 core complete all as specified and as directed.

Supply, Laying, connecting up and testing cable XLPE insulated galvanised steel strip or wire armoured electric power cable with stranded aluminium conductor 11000 V grade (Earthed) of size 300 sqmm 3 core complete all as specified and as directed.

S&F cable jointing kit for 11 KV grade for indoor termination, heat shrink type joint with complete jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 185 Sqmm all as specified

S&F cable jointing kit for 11 KV grade for indoortermination, heat shrink type joint with complete jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 300 Sqmm all as specified

S&F cable jointing kit for 11 KV grade for straight through, heat shrink type joint with complete jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 185 Sqmm all as specified

S&F cable jointing kit for 11 KV grade for straight through, heat shrink type joint with complete jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 300 Sqmm all as specified

Materials and labour for earthing complete with galvanised iron earth plate electrode of size 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 and including galvanised earth strip of size 32 x 6mm 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 upto system 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 by the Engr-in-Charge.

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 including taking down old item all as specified

Supplying and laying synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m.

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 copper conductor, 1100 volts, grade having cross sectional area 2 core 4 sqmm.

M&L for PCC 1:3:6 type C2 (using 40mm graded stone aggregate) as in foundation, filling and mass concrete complete as directed.

Excavation in tenches not exceeding 1.5M in depth and not exceeding 1.5M wide for laying pipes and getting out in soft/loose soil.

Returning fitting in soil inclduing spreading, leveling , watering and well ramming in layers not exceeding 25 cm.

Removing excavated materials not exceeding 50 Mtr depositing where directed at a level not exceeding 1.5 mtr above the starting point.

M & L for sand filling in trenches for cushioning of HT cables punning after filling complete as specified and as directed Note: Punned thickness shall only be measured and paid

Supply and lay un-reinforced precast concrete cable cover , class ,HV , Type I as per IS -5820 with flat size 300 x 180 x 40 mm laid dry in treches over under ground cables complete all as specified and as directed.

Supply and lay un-reinforced precast concrete cable cover , class ,LV , Type I as per IS -5820 with flat size 250 x 150 x 40 mm laid dry in treches over under ground cables complete all as specified and as directed.

Lateral thrust boring (Horizondal 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 mts 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 of 110mm HDPE pipe

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