Extension and modification of Existing MV panel at Telephone Bhavan, Kannur (Revised)

Amount

MV Panel

SITC of floor mounting cubicle type 1000A Extensible type Add on MV Panel suitable for 415V, 3phase, 4 wire, 50Hz AC supply system fabricated in compartmentalized design from CRCA sheet of 2 mm thick for frame work & load bearing members and for covers & doors, 3 mm thick for gland plates, powder coated in approved shade after 7 tank process, complete with hinges and earthed front door with name plate, danger notice plate, heavy duty rubber gaskets and having depth 1m (Approx.), panel shall have clear sign writing including, interconnection with suitable bus bar links for the incoming & outgoing cables & Cable Alley/bus bar chamber/compartment for incoming & outgoing cables , including earthing the switches, entire panel shall have a common tinned copper earth bar of size 32mm x 5mm at the rear/ bottom with 2 No’s earth stud and to earth individual switches, lifting hooks, providing bottom base channel of MS section of approximate size 100mm x 50mm x 5mm thick including, testing and commissioning etc. as required. The panel shall have 1000 A 3 1/2 strips Aluminum bus bars of high conductivity with heat shrinkable coloured sleeves, DMC/ SMC bus bar supports etc as reqd (Approximate size of panel shall be 1.03mx 2.18mx1.03m)

Note:(1) The panel drawing shall be got approved by the Engineer in charge before fabrication.( All Items Make:- L&T, Siemens or SS make) (2) Aluminium Bus bars shall be of sufficient cross section so that the Current density of 130 A / sqcm is not exceeded.

Incomer

800A, 4 pole, Drawout type , microprocessor release, 50KA ACB with inbuilt - 2NO+2NC Aux contacts, Safety shutter assembly, Racking handle, Door sealing frame, Push-button cover & Rating error preventer , Shunt Release (SR) suitable rating CTs for Phase & Neutral etc. as required. ( L&T Cat No: SL 96062 or Similar Superior make)-1 No

Outgoings

a)250 A TPN SDF with 200A HRC fuse link- 1 No

b)125 A TPN SDF with 100A HRC fuse link- 2 No

Metering

a) Digital type multifunction meter with LCD display, class 1 accuracy, with CTs of suitable rating for measurement of voltage, current, frequency, power factor, KVA, KW, KWH with RS 485 port - 1 No. (Make: L& T 4410 series or similar superior make)

3 nos LED indication lamps (RYB) with MCB control - 1 Sets

Complete as above

Supplying and fixing following switch gears & other accessories to be provided in the above MV Panel / for replacing the defective items in the existing MV panel i/c making connections, testing, commissioning etc as required

800A, 4 pole, MDO, microprocessor release, 50KA ACB with inbuilt - 2NO+2NC Aux contacts, Safety shutter assembly, Racking handle, Door sealing frame, Push-button cover & Rating error preventer , Shunt Release (SR) suitable rating CTs for Phase & Neutral etc. as required.

250 A TPN SDF with HRC fuses

125 A TPN SDF with HRC fuses

Modification of existing control panel of 2 x 500 KVA Engine Alternator sets having mechanical interlocks including removing the bus couplers, cables, common bus bars for bifurcating the E/A set control panel, dismantling the mechanical interlocks, modification of bus bars for connecting individual cables for each engines to facilitate 2 sets of out going cables i/c cutting the existing bus bars, drilling holes fixing bolts and nuts, cutting the top sheet of approximate size 45cm x 45cm, providing new CRCA sheet with gland plate for cable entry(3 mm nominal thickness and 6 nos gland plate) i/c painting etc as reqd

S/F mechanical interlock with 4 locks and 1 key suitable for 4 incoming ACBS I/c modifying the ACBS for accommodating the locks complete as required

Supplying and installing following size of perforated Hot Dipped Galvanised Iron cable tray (galvanisation thickness not less than 50 microns) with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc. as required.

375 mm width X 62.5 mm depth X 2.0 mm thickness

Supplying and laying of one number PVC insulated and PVC sheathed armoured Aluminium conductor power cable of 1.1 KV grade of following size in the existing masonry open duct as required.

3½ X 240 sq. mm

Supplying and laying and fixing of one number PVC insulated and PVC sheathed armoured Aluminium conductor power cable of 1.1 KV grade of following size on wall surface as required.

3½ X 240 sq. mm

Supplying and laying and fixing of one number PVC insulated and PVC sheathed armoured Aluminium conductor power cable of 1.1 KV grade of following size on cable tray as required.

3½ X 240 sq. mm

Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

3½ X 240 sq. mm (62 mm)

Dismantling the existing 1 No APFC panel from the current location I/c disconnecting the incoming power cable, sensing cables and earth connections, placing at a convenient location etc complete as required.

Terminating the cable dismantled from the 100KVAr APFC panel to the stand by 100 KVAr APFC panel i/c connecting the power cables, sensing cables, providing new aluminium lug of 240 sqmm etc and testing, commissioning etc. complete as required.

Making inter connection of 4 strip Aluminium bus bar of existing old MV panel to the newly installed panel i/c drilling holes on the bus bar of old panel, connecting the new bus bar with suitable bolts and nuts (4 nos for each bus bar), testing, commissioning without affecting the functioning of Telephone Exchange etc as required

Making necessary alteration for replacing the 800A 4 pole ACB(Make : EE model MPACT) with new one so as to accomodate in the existing chamber(to make retrofit) i/c extending the bus bar, replacing/making modication of the compartment door , providing necessary support for fixing the ACB without affecting the functioning of Telephone Exchange etc as required

Making necessary alteration for replacing the 250/125A TPN SFU(Make : EE ) with new one so as to accomodate in the existing chamber i/c extending the bus bar,making modication of the compartment door , providing necessary support for fixing the SFU without affecting the functioning of Telephone Exchange etc as required