Public Works Department Tender

Overall size 16sq.mm (Un-sheathed)

XLPE INSULATED UN-ARMOURED CABLES (LOOSE):-

Supply, laying and erection of aluminium conductor XLPE insulated PVC sheathed Un-armoured and served cable 1100 volts grade as per IS 7098 (Part-1)1988 to be laid loose in the existing trench or pipe as per PWD General Specifications:-

Overall size 35sq.mm (3½ Core) Un-armoured (Loose)

Overall size 50sq.mm (3½ Core) Un-armoured (Loose)

Overall size 70sq.mm (3½ Core) Un-armoured (Loose)

MINIATURE CIRCUIT BREAKERS:

Supply and erection of Miniature Circuit Breaker MCB's for circuit protection against overload and short circuit current fault suitable for 240/ 415 volts 50cycles AC supply with breaking capacity of 10kA, Curve-C and low watt losses as per IS/IEC 60898-1, energy limitation class-3, true contact indication, label holder facility in the existing MCB distribution board as per PWD General Specifications including connections with suitable size of thimbles/lugs:-

MCB Single Pole 6-32amp. (10kA, Curve-C)

MCB Double Pole 40amp. (10kA, Curve-C)

MCB Four Pole 50, 63amp. (10kA, Curve-C)

SHEET METAL DOUBLE DOOR DISTRIBUTION BOARD FOR MCB/ RCBO/ RCCB's:

Supply and erection of sheet metal Double Door Distribution Boards IP 43- IK09 metal door (dust protected) as per IS 8623-1&3, IEC 61439-1&3 suitable for flush mounting with fully insulated copper busbars, shrouded neutral bars, earth bars, cement spill protector, colorcoded interconnecting wire set, cable ties, blanking plates and circuit identifications label and of required no. of ways for mounting miniature circuit breakers/ RCBO's/ RCCB's in the distribution board (For SP&N distribution board with provision DP MCB's/ RCCB's/ RCBO's as incomer and SP MCB's as outgoings and for TP&N horizontal distribution board with provision TPN/ FP MCB's/ RCCB's/ RCBO's as incomer and SP MCB's as outgoings) as per PWD General specifications including connections with suitable size of thimbles and bonding to existing earth etc:-

SP&N Double Door Distribution Board 8 way each

TP&N Horizontal Double Door Distribution Board 8 way each

TP&N Horizontal Double Door Distribution Board 12 way each

TP&N Vertical Double Door Distribution Board 12 way each

SHEET METAL IRON CLAD CHANGEOVER SWITCHES:

Supply and erection of sheet metal Iron Clad Changeover Switch on existing surface with G.I. bolts & nuts/rag bolts and nuts etc., according to the size of holes in the body of the switch including connections with suitable size of thimbles and bonding to the existing earth as per PWD General Specifications:-

IC Four Pole Changeover Switch 63amp., 415volts

SHEET METAL BUS BAR CHAMBERS (COPPER STRIPS):

Supply and erection of sheet metal bus-bar chamber (factory fabricated) duly powder coated on existing surface with required 4Nos. of tin plated copper bus-bar strips of suitable length and cross-sectional area mounted on DMC/ SMC moulds at sufficient distance, enclosure made of M.S. sheet 1.6mm thick with hinged cover and lock, fitted with dust excluding gaskets and secured with sufficient no. of cadmium plated iron screws and of given overall dimensions and to be fixed with G.I. bolts and nuts/ rag bolts and nuts etc. complete with all accessories including connections with suitable size of thimbles, bonding to the existing earth and painting etc. as desired by the Engineer-in-charge at site:-

Bus Bar Chamber 100amp., 415volts Overall Dimensions (300mm x 345mm x 120mm) nominal

CABLE TRAY:

Supply and erection of MS perforated cable tray (MS Sheet thickness 2mm) with DA gray paint on the existing surface with the help of MS angle iron support (to be painted with approved paint) of size 50mm x 50mm x 6mm thick to be fixed with fastners/ nut & bolts etc., complete in all respect as desired by the Engineer-in-charge and as per PWD General Specifications:-

Cable Tray Size 150mm x 50mm x 50mm (2mm thick)

Supply and erection of MS Sheet Metal Enclosure of size (1400x700x300)mm with Bus Bar rating 200A (4 Nos. 4 Pole) with weight of Bus Bar 40x5mm 5.5KG, Panel Sheet 16 guage 54KG arrangement for installation of MCB's, Bus Bars and Change Over Swithches. Complete in all respect as per satisfaction of engineer in charge at site.

LT PANELS: Designing, Supply, Erection, Testing & commissioning of indoor Type LT cubical panel enclosure (dust, vermin and interchangeable modules with facilites for extensions or reduction as per the space or requirments). The Panel shall be suitable for operation at 415+6% Volts, 50HZ, 3 phase 4 wire & earth system. The assembly manufacturer should be ISO approved and CPRI tested for short circuit of (minimum 50kA) as well as IP degree of protection (IP 54/55).

Fabrication:- Panel shall be made from 14/16 SWG CRCA sheet, conforming to IS 8623/1977-82. The sheet metal used for the fabrication of control panel will be 2mm for load bearing member’s door and fittings plates etc. the partitions and other non load bearing members will be fabricated out of 1.6mm sheet, the sheet will be of mild steel CRCA type. The base channel will be made out of 75 x 40 x 5mm rolled channel. The door should be double folded without edge and the gasket should be ‘S’ type puffed neutral rubber gasket for long life. The hinges of the door should be bolted type with double hole arrangement. The panel door lock should be quick openable type spring loaded. There should not be any special tool or key to open the lock. Minimum depth 400mm / wide 300 mm for busbar/ Cable ally at the front of the panel. The panel will be free standing floor mounting type having provision for cable entry from bottom/top with cable glands etc. The fabrication should be such that all the member i.e. vertical/horizontal should be detachable type i.e. total bolted. In case of any changes required at site. it should be possible then and their self without any cutting or welding. The fabrication of the panel in 3B construction fully compartmentalized type i.e. bus bar chamber as well as the cable chamber should be totally isolated from the feeder chamber. Where there crossing of the wire or bus links. It should have proper rubber gourmets or non-hygroscopic material. No live part should be in visible condition.

Painting:- The sheet metal is sprayed with corrosion resistant etch Primer. The finishing treatment shall be applicable with air drying paint (7/9 tank Powder coated process should present in company pemises) after necessary putty work . Busbars:-The panel shall be provided with TPN aluminium busbar of suitable size according to the size of MCCB's. Busbar shall be of high conductivity (53% to 58%) E91-E Grade aluminium (1A/Sq.mm). All Busbar will be air insulated with codified in Red, Yellow, Blue & Black as per standard for cable termination with the help of extended busbar only with proper adjustable cable supports. The main busbar would be supported upon non-hygroscopic SMC/DMC supports.

Metering:-The panel shall be completed with digital metering unit (with selector switches, voltmeter & ammeter) epoxy insulator, gasket, PVC sleeves, CT's & L.E.D. type indicator etc. Manufacturer of Panel should be CPRI Approved (Approval not older then 5 years) & ISO certified (Manufacturer workshop as per ISO 9001: 2015 standard) The Concerned contractor shall be approved the detailed drawing of panel with complete specification from the Engineer in charge at site. Detail of capacities of MCCB's to be installed in the cubical panel Enclosure (Excluding the cost of MCCB's) as per following:-

LT Panel enclosure having space for 1No. Incomer MCCB 400Amp. and 8Nos. outgoing MCCB's 40amp. to 160amp. according to the requirement at site (Approx. size 1750 x 1750 x 400mm)

LT Panel enclosure having space for 1No. Incomer MCCB 630Amp. and 6Nos. outgoing MCCB's 40amp. to 250amp. (Option: MCCB 200-250amp.= 2Nos. and MCCB's 40-100amp.= 4Nos.) according to the requirement at site (Approx. size 1475 x 1800 x 400mm)

MCCB's (FOR PANELS & SHEET ENCLOSURE):

Supply and erection of Moulded Case Circuit Breaker (Panel mounting Cubical type) in the existing Cubical Panel (confirm to IEC:60947-2) having Ics=100% Icu, 100% neutral with spreader terminal links, Extended rotary handle and relevant PWD general specifications complete with G.I. Bolts, Nuts & Connection on both sides of MCCB with suitable size of thimbles etc:-

MCCB Four Pole 63/80/100amp., 415volts, ≥25kA Fixed Magnetic and Adjustable Thermal Setting

MCCB Four Pole 160amp., 415volts, ≥25kA Fixed Magnetic and Adjustable Thermal Setting

MCCB Four Pole 250amp., 415volts, ≥25kA Fixed Magnetic and Adjustable Thermal Setting

MCCB Four Pole 400amp., 415volts, ≥36kA Microprocessor Based Adjustable Thermal and Magnetic Setting

MCCB Four Pole 630amp., 415volts, ≥36kA Microprocessor Based Adjustable Thermal and Magnetic Setting

MS SHEET ENCLOSURE FOR MCCB's:

Supply & Erection of indoor type MCCB enclosure of suitable size having provision for MCCB with extended rotary handle. The Enclosure shall be made from 14/16 SWG CRCA sheet, confirming to IS 8623/1977-82. The door should be double folded without edge and the gasket should be ‘S’ type puffed neutral rubber gasket for long life. The hinges of the door should be bolted type with double hole arrangement. The Enclosure door lock should be quick openable type spring loaded. There should not be any special tool or key to open the lock. The Enclosure will be wall mounting type having provision for cable entry from bottom/top with cable glands etc. The sheet metal is sprayed with corrosion resistant etch primer. The finishing treatment shall be applicable with air drying paint (7/9 tank Powder coated process should present in company pemises) after necessary putty work:-

MS Sheet Enclosure having provision for MCCB 40-160Amp.with extended rotary handle (Approx. Size 500mm x 300mm x 200mm)