SPL REPAIRS EM FOR REPLACEMENT OF 11 KV HT OCBs WITH 11 KV HT VCB AT MAIN POWER HOUSE AT PANGODE MIL STN TRIVANDRUM

Amount

Taking down existing unserviceable HT 11 KV cubical panel consisting of 6 Nos OCBs including disconnecting safely all electrical connection after proper shut down given by Engr-in-Charge, transported and deposited to MES store yard and making good to the surface of substation complete all as specified and directed by Engineer in Charge

Supplying, installing, testing and commissioning of indoor type HT 11 KV 6 Panel VCB cubical panel consisting of 01 No 630 Amps VCB as incomer and 05 Nos 400 Amps VCB as outgoing floor mounted encapsulated VCBs, horizontal draw out , horizontal isolation type VCB having rupturing capacity 18.4 kA for 1 second by interconnecting the HT panel board with copper bus bar of suitable size (not less than 1250 Amp) duly enclosed compartmentalized design with internal arc as per IEC 62271-200/100 and powder coated sheet metal frame and panel of thickness not less than 2.0 mm and comprising of the following etc complete all as specified and directed :- (a) Electrical and Mechanical interlock with and automatic safety shutter door - 06 Nos ( For each 6 VCBs). (b) Power pack for control circuits - 06 Sets (for each 6 VCBs). (c) Assembly of six vaccum interrupter complete with epoxy support insulator and self alligning finger type isolating contacts- integratd for entire panel. (d) Motorised mechanism, spring charging with independent closing/tripping push buttons and mechanical breaker " close/open" spring charged/discharged indication -06 Nos ( For each 6 VCBs) (e) Mechanical operation counter - 06 Nos ( For each 6 VCBs) (f) Electrical release, shunt trip coil for incomer and closing coil - 06 Sets (For each of 6 VCBs) (g) Auxilary contact switch and antipumping - 6 Nos ( For each 6 VCBs).

(t) Potential transformer three single phase draw out type 11KV/rt3/110V/rt3, class 0.5-3, Burden 50VA - 50 VA (set of 3) - 1 set for incomer VCB (u) Epoxy rasin cast CT of ratio 400-200/5-5 class 0.5/5P10, burden 2.5VA/15VA for incomer VCB (set of 3) - 1 Set (v) Epoxy rasin cast CT of ratio 200-100/5-5 class 0.5/5P10, burden 2.5VA/15VA for outgoing VCBs (set of 3) - 5 Sets Note : (i) The cost of modification of existing site including excavation/PCC foundation as per site requirement complete all as specified and as directed by Engineer-in-Charge deemed to be included in the quoted rate (ii) Any accessories not mentioned above but forming essential part of standard module of manufacturer deemed to be included in the quotd rate (iii) The standard drawing of panel duly incorporating all constructional details and electrical connection details and mentioning make of each component should be got approved by GE before manufacturing. (iv) Factory testing and inspection before dispatch at the cost of tenderer deemed to be included in the quoted rate. (v) The panel shall be manufactured by OEM authorised system integrators/core component panel builders only.

Earthing complete with galvanised steel earth plate electrode 60cmx 60 cm x 6 mm thick, buried directly in ground ( earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to galvanised iron strip 32 x 6 mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron steel all as shown in electrical plate No 3 of SSR Part I connected to earthing test point all as specified or indicated including testing on completion.

Supply and fix cable jointing kit for 11 KV grade for indoor termination, heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of size 120 to 185 Sqmm complete all as specified and as directed.

Supply and fix cable jointing kit for 11 KV grade for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of size 120 to 185 Sqmm complete all as specified and as directed.

Supply, laying and testing of cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade, of size 3 core 185 Sqmm complete all as specified and as directed

Supply only laying synthetic rubber insulated mat of 2.5 mm thick for voltage upto 11 KV (size 2m x 1m) for electrical purpose as per IS 15652-2006, suitable for electric shock safety.

Excavating in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth for foundation for erection of poles, stays, laying cables, stays etc and getting out in soft/loose soil including in road cutting all as specified and as directed.

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

Removing excavated material/ surplus soil not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point.

Supply, lay / spread in trenches clean river sand including spreading, levelling, punning for laying/ cushioning of cable all as specified and as directed. Note : Punned thickness only will be considered or payment

Material and labour for unreinforced precast cable covers class HV, type 1, flat size 300 x 180 x 40 mm laid in trenches for cable protection all as specified and as directed.

Supply and install, Switch air break, gang operated, triple pole mechanically operated, mounted on insulator and steel frame with operating mechanism worked from ground level for current rating up to 400 Amps, 11000 volts grade complete vertical type to be fixed on two pole structures all specified and as directed.

Material and labour for mild steel members consisting cross arms, bracings, supports, clamps and back plates fabricated from MS structural steel sections viz channel, angle, flats and plates, including MS nuts, bolts, washers, welding, bending, cold or hot drilling, holes drilled for bolts in any shape and size as indicated or directed including painting with two coats of aluminium paint over one coat of primer all as specified and directed.

Material and labour for lightning arrestor non leanier, resistance type confirming to IS-3070, Part I of 1985, suitable for HT 11KV of nominal discharge capacity 65 Kilo Amps including fixing on pole using mild steel FI clamps of size 50x6mm with bolts, nuts etc., complete all as specified and as directed.

Supply and fix and stringing ACSR conductor of any size for OH lines on HT poles including extra materials for sag jointing, jumbers, binding wires etc. complete all as specified and as directed.

Material and labour for Pin type porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150mm height 150mm dia for 11000 Volts grade all specified and as directed.

Material and labour for GI tube light grade, 100mm bore diawith all fittings, complete, fixed to walls, pole ceiling or laid in trenches for cable protection all as specified and as directed.

All as per item No 18 here-in-before but for 80mm bore dia

Material and labour for HT Danger notice plate of size 250mm x 200mm, 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bone in signal red colour and fixed with MS clamps, bolts and nuts of approved size all specified and as directed.

Material and labour for Expulsion type fuse unit, 11 KV, dropout, mounted on insulators, 25 to 50 Amps capacity all as specified and as directed.

National Electric Co

SUPER COOL

M/s.Rejoy Constructions

IMPERIAL ENGINEERING COMPANY