SPECIAL REPAIRS TO LT/HT UG CABLE CONNECTED LT PANEL AND MISCELLANEOUS E/M WORKS NEAR KASTAN WORKSHOP IN NAD EXPLOSIVE AT NAVAL STATION KARANJA

Amount

Material and labour for dismantling of existing panel including disconnecting connected cables, etc., and supplying, installing, testing and commissioning of factory made LT cubical double door panel with roof canopy, indoor type of suitable to accomodate the following accessories made out of CRCA sheet 3mm thick duly powder coated with seimens grey shade RAL 7032, totally enclosed, dust and vermin proof outer cubicle. Inner cubicle should be made out of 2mm thick CRCA sheet with working voltage of 415V, 50 Hz, 3 phase 4 wire fully compartmentalised with single door system for each compartment. Outer cubicle having both sides door openable and should be provided with suitable louvers for ventilation. Bus bars provided shall be adequately supported on insulators to withstand dynamic stresses due to short circuit current and shall be suitably colour coded with heat shrinkable sleeve for phase indication. The standard phase arrangement when facing the switchgear shall be R-Y-B from left to right. The bus bar connections and their insulated supports shall be mechanically strong and shall withstand all the stresses which shall be imposed upon them in ordinary working due to fixing, vibration, fluctuation in temperature, short-circuit or other causes. The bus bar should be supported on DMC. Provision shall be made for expansion and contraction of the bus bars and connections with variation of temperature. Internal wiring should be done with 2.5 sqmm multi-stranded copper conductors and shall be properly bunched, tied, ferruled for proper identification, crimped and shall be connected with suitable lugs and PVC sleeves, etc., The bottom of the panel should contain detachable plate having provision for entry of armoured cable of adequate size with glands. Threaded earthing studs - 02 Nos shall be provided at the bottom and lifting lugs of suitable size at top to lift the panel safely shall be made. The cubicle incomer MCCB as well as outgoings shall have copper TPN/ TP extension links of current rating not less than 1.5 times the rated capacity of individual feeders with Ics = 100% Icu in all MCCBs with extended rotary handle. complete all as specified and as directed by Engr-in-charge. The cubicle should be inclusive of following:

(A) INCOMING: (i) Microprocessor Based SR18G Manual Draw out ACB -1000 Amps, Ics=Icw (1sec) = 50kA, will have inbuilt- 2NO+2NC Aux contact for MDO & safety shutter assembly rackig handle, door sealing frame, push button cover & rating error preventor. (B) OUTGOING: (i) MCCB -DPX3 1600 thermal & magnetic type 4 pole, 415 volt, 36 kA breaking capacity adjustable thermal release range 800 Amps – 01 No. (ii) MCCB -DPX3 630 thermal & magnetic type 4 pole, 415 volt, 36 kA breaking capacity adjustable thermal release range 630 Amps - 01 No. (iii) MCCB -DPX3 160 thermal & magnetic type 4 pole, 415 volt, 25 kA breaking capacity adjustable thermal release range 125 Amps – 01 No. (iv) MCCB -DPX3 160 thermal & magnetic type 4 pole, 415 volt, 25 kA breaking capacity adjustable thermal release range 63 Amps – 01 No. (v) Multi function meter having LCD Display, 96 x 96 sqmm -01 No. (vi) Current transformer of suitable ratio, accuracy - 5VA, Class - 1. (vii) LED indicators ribbed lens with trimmed collar- Red, Yellow and Blue - 1 Each (viii) Aluminium bus bar of Rating 1950 Amp R-Y-B phases and Neutral. (ix) Base frame for cubical mounting made out of 40x40x6mm equal angle iron duly painted. (x) Foundation for the panel should provided with PCC 1:4:6 at a depth of 150mm below G.L. and 100mm above the G.L. with slot openings for I/C and O/G cables.

Supply, fixing, jointing, connecting and testing in trenches XLPE/PVC insulated PVC sheathed cable heavy duty 1100 volts grade, aluminium conductor in trenches/ ducts of following sizes including taking out cable cover and cable complete all as specified and as directed by Engr-in-charge.

3.5 core 400 Sqmm

Excavation in trenches not exc 1.5m wide and not exc 1.5m depth and getting out in soft /loose soil including taking out faulty cable/ cable, cable covers and GI pipe complete all as specified and as directed by Engr-in-charge.

Returning filling in including spreading levelling watering and well ramming in layers not exc 25cm complete all as specified and as directed by Engr-in-charge.

Removing excavated material not exc 50m and depositing where directed at a level not exc 1.5m above the starting point complete all as specified and as directed by Engr-in-charge.

Material and labour for dry river sand as sand cushioning for protection of UG cable including punning of sand in layers complete all as specified and as directed by Engr-in-charge. Note: Only punned thickness shall be measured for payment.

Supply and laying un-reinforced precast concrete cable cover class LV type 1, flat size 250x150x40mm complete all as specified and as directed by Engr-in-charge.

Laying only un-reinforced precast concrete cable cover class LV type 1, flat size 250x150x40mm complete all as specified and as directed by Engr-in-charge.

Material and labour for GI pipe light grade with all fittings laid in trenches for 80mm bore of pipe complete all as specified and as directed by Engr-in-charge.

Material and labour for GI pipe light grade with all fittings laid in trenches for 100mm bore of pipe complete all as specified and as directed by Engr-in-charge.

Material and labour for PCC type C2, 1:3:6 (Using 40mm graded stone aggregate) in foundations, filling and mass concrete includings necessary form work complete all as specified and as directed by Engr-in-charge.

Supply, laying in repairs, in trenches /ducts/ fixing on pole /STR with suitable size of GI clamps made out of GI strip 32x6mm, XLPE HT insulated, screened, earthed, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) of size 3x 120 sqmm with aluminium conductor suitable for 22 KV grade as per relevent IS including latest amendment for IS (ISI marked cable) testing, commissionong along with HT cable route indicator complete all as specified and as directed by Engr-in-charge. Notes: (i) Earth work, EHV cable cover, sand coushioning and GI pipe will be measured and paid seperately. (ii) High voltage test to be conducted at site with suitable voltage before and after laying of HT cable and reading shall be recorded jointly and test report to be submitted in triplicate to Engr-in-charge.

Supply and laying reinforced precast concrete cable cover laid width wise factory made, class EHV type 1 with peak size 450x230x50mm complete all as specified and as directed by Engr-in-charge.

Laying only precast concrete cable cover of size 450x230x50mm complete all as specified and as directed by Engr-in-charge.

Material and labour for heat shrinkable cable end termination joint including jointing kit outdoor type suitable for earthed 3 core 95/120 sqmm HT 22KV XLPE aluminium conductor cable and HV test after jointing and connecting up complete all as specified and as directed by Engr-in-charge.

Material and labour for earthing complete with GI earth plate electrode 600x600x6mm buried directly in ground vertically to a depth not less than 2.25m below normal ground level with top edge of earth plate at a depth not less than 1.5m below normal ground level connected to and including GI strip 32x6 mm by means of bolts, nuts and check nuts and washers etc., made of GI and connected to earthing test point and earth dolly all as shown in electrical plate No 3 of SSR Pt-I including all necessary earth work, excavation, PCC chamber, chamber cover with handle (PCC 1:2:4) including 40mm dia protection pipe and 20mm dia watering pipe and wire mesh funnel etc., complete all as specified and as directed by Engr-in-charge.

Supply and fix in repairs 1.1 KV straight through joint kit 3.5 core 400 sqmm complete all as specified and as directed by Engr-in-charge.

D.N.PATIL

SREE HARITHA ASSOCIATES

Sagar Electricals

somnath engineering corporation

Nexus Infratech