Providing and Laying LT Cabling and SITC of RMU work at Government Engineering College Distt Bharatpur

SITC of IP-42 and general construction confirming to IS:8623 : 1993, wall/ free standing floor mounted dust and vermin proof compartmentalised cubical panel as specifications and Other parameters required as per point (a) ,(b), (c),(d), (e), (f), (g), (h) as below:-

(a) Thickness of CRCA sheet shall not be less than 1.6 mm upto 450 mm length/ width of any compartment and be 2.0 mm above 450 mm, load bearing structure shall be 2.0 mm thick sheet supported by base M.S. channel if required, cable alley compartments having concealed hinged type doors with key type lock with / without detachable extension type structure. Removable 3 mm. thick sheet steel gland plates with appropriate size of knockouts for cables shall be provided

(b) complete panel shall undergo a process of degreasing, Water rinsing, Activation, derusting, pickling in acid bath, phosphatising & shall be subjected to nine tank process and then Powder coated with approved shade of minimum 70 microns on both side(Inner & Outer side) of panel. The panel having PE foam/ Neoprene rubber gasket of not less than 3mm thickness ,required hardware , concealed hinged door with key type locking arrangement for equipment/switchgear earthed with 2.5 sq.mm braided copper wire.

[c) Interconnection between bus bar and switchgears /cable shall be rigidly supported and made out by flexible copper wires (up to 63 amp ) and by solid bus bar (>63 amp ) . control wiring will be carried out with 1.5 Sq.mm, Earth wire with 2.5 Sq.mm and CT with 2.5 sq.mm flexible copper wire only. All joints / interconnections of copper bus bar shall be dully tinned . Clearance between main bus bar and risers / metal parts shall be at least 10 mm additional to width of bus bar Bus bar is insulated by Heat Shrinkable sleeves . Earth and Neutral bus bar shall be half of the size of phase bus bar. ( Cost of Bus bar / Flexible wire for Interconnection between Main busbar and Switchgear is to be Paid Extra )

(d) Wiring between components within switchgear and Incoming / outgoing cable shall be done through the terminal block only. Direct connection shall not be permitted. Each terminal block shall be one piece moulded, barrier type, 650 volt grade, complete with washers, heads, studs with two nuts and identification strips and shall have adequate continuous current rating. For tap-offs, adjacent terminals with shorting strips shall be used. 10% Spare terminal blocks shall be provided. Wire identification on marking strip shall correspond to the designation of the wiring diagrams. All wire terminals on the equipment shall also be marked with designation corresponding to those of the wiring diagram.

(e) All wiring shall be enclosed in plastic channels and neatly bunched and closed in metering chamber, Wiring between terminals of various devices shall be ‘point to point’ (no wire splitting or tee connections) with wires neatly trucked along the back of the panels, adequately supported to prevent sagging.

(f) Floor mounted panel shall be mounted on Base frame of ISMC channel size 100 x 50 x 5 mm ( to be paid Extra )

(g) Tests: The insulation resistance (with 1000 V Megger) and High voltage Power frequency test (by applying a voltage of 2.5KV for one minute) shall be measured between phases, between phase and neutral and between phase and earth. both before and after high voltage power frequency test. The insulation resistance shall not be less than three megaohm. CT Secondary current injection test shall also be carried out.

(h) only outer surface area on all sides shall be measured & panel to be fabricated only from CPRI approved fabricator only (CPRI type Test certificates for Temp. rise test, Short circuit test for 50 kA and IP test is to be submitted)

Supplying and fixing of Aluminium (IEC 60105 ISO 209-1,2) / Copper (IEC 60028) bus bar by means of SMC / DMC type insulator, with short circuit withstand capacity of 31 MVA for 1 Sec. , high tensile nuts and bolts spring washers in existing panel including bending , cutting in required shape and size and colour coding with heat shrinkable PVC sleeves.

Electrolytic grade Aluminium bus bar 6010 grade

Supply and fixing of LT Distribution Kiosk confirming to IS:13947/1993/ IEC 60947 Pt.3 amended up-to-date and as per DISCOM specifications made of 2 mm thick powder coated CRCA sheet of 415 volts 3 phase 4 wire triple pole and neutral type, complete in all respect as required. Including Incoming Switch Disconnector Fuse unit, Aluminium Busbar with copper one piece U contacts base, brass studs and nuts, copper busbar for main and interconnection, MS Channel frame of 75 mm x 40 mm grouted with C.C. of M-10 grade to achieve the height of 1.5 feet above the road level suitable for required no. of outgoing.

100 Amp. Distribution Kiosk of Size 500mm x 550 mm x 700 mm suitable for Underground cable

Providing & Fixing of 240/415 V AC MCB with positive isolation of 10 kA breaking capacity (B/ C/D tripping characteristic as per type of load and site requirement) 4 KV impulse withstand voltage, ISI marked IS 8828(1996) / conforming to IEC 60898-1 2002, IEC 60947-2, low watt losses, trip free mechanism , energy limiting of class 3 as per IEC, minimum phase termination capacity of 25 sq.mm., conductor line load reversibility , IP 20 contact protection and fitted in existing distribution board/sheets, minimum electrical operation 20,000 upto 20 A rating, 10,000 upto 63 A, 5000 for 80 A & above rating including making connections, testing etc. as required.

Single pole MCB (With B / C curve tripping characteristics)

6 A to 32 A rating

Triple pole MCB (With B / C curve tripping characteristics)

50/63 A rating

Four pole MCB (With B / C curve tripping characteristics)

50/63 A rating

SITC of 3 /4 pole current limiting Moulded case circuit breaker (MCCB) made of flame retardent & heat resistant material having following current rating, short circuit breaking capacity at 440/415 V, 50 Hz; O/L & S/C settings , conforming to IS/IEC 60947 P -2 :2003 with front face and centralised adjustable, trip free mechanisum, true contact position indicator, designed for both horizontal & vertical mounting without any adverse effect on electrical performance, suitable for operation from 50 to 55 degree and without derating upto 40 degree, pollution degree 3, having positive isolation capability, push (test) to trip, trip time less then 10 ms under s/c condition, Breaking capacity Ics = 100% Icu. U imp =8 KV, rated insulation voltage 690V. provision for UVR , shunt trip , earth fault trip, door interlock, pad lock & rotary handle ( to be paid extra) , including making connections etc. as required. OEM shall have submit NABL / CPRI / ERDA/ Intertek accrediated lab type test certificate.

3 pole MCCB With Thermal Magnetic release

125 Amp , 25 kA, adjustable O/L & fixed S/C setting,

4 pole MCCB With Thermal Magnetic release

up to 100 Amp , 25 kA, adjustable O/L & Fixed S/C setting,

125 Amp , 25 kA, adjustable O/L & Fixed S/C setting,

160 Amp , 25 kA, adjustable O/L & Fixed S/C setting,

250 Amp , 25 kA, adjustable O/L & adjustable S/C setting,

630 Amp , 50 kA, adjustable O/L & adjustable S/C setting,

SITC of Microprocessor based Draw out type 3/4 pole door interlock Air Circuit Breaker (ACB) as conforming to IS/IEC 60947 P - 2 :2003 in existing LT panel suitable for LT installation 440/415 V, 50 Hz and having adjustable over load, short-circuit, Instantaneous, earth fault (LSIG) with separate LED indication or Fault details on display for each type of fault shall confirm to EMI/ EMC test , LCD/LED display, last 10 trip history, Inbuilt ZSI, Current metering, Provision for Communication, Thermal memory, trip free mechanism, modular design and suitable for ambient 50 degree and utilization catagary B. In built electrical & mechanical anti pumping feature , pollution degree 3, 100% rated neutral . ACB shall have separate indication for service, test, isolation & maintenance position, Breaking capacity Icu = Ics = Icw ( 1 sec ) , U imp - 12 KV, break time not more then 30 ms. Provision for electrical & mechanical interlock between ACB sand other required accessories (Cost of accessories to be paid extra) Min.electrical operation 10000 upto 1600 A rating and 5000 for 2000 A to 4000 A. including making connections, testing etc. as required. OEM shall have submit NABL / CPRI / ERDA/ Intertek accrediated lab type test certificate.

Manual spring charged type 4 Pole

630/800 A Rating , 50 kA

Supply and fixing of following accessories for Air circuit breaker (ACB) in existing ACB including making connection etc complete in all respect.

Mechanical Interlocking Kit using key & Lock

Providing & Laying XLPE insulated & P.V.C. sheathed Armoured Aluminium cable confirming to IS :7098 P - I of 1.1 KV with H4- Grade electrolytic aluminium conductor confirming to IS 8130 of purity >99.6 %, round / flat strip armouring of cables, Inner / outer sheath confirming to IS:5831 in existing RCC / Hume / Stoneware / PVC pipe/ open duct/cable trench / Cable tray(with cable tie) including testing commissioning etc. as required of following size.

Add Extra in item no. 11.1 to 11.4 for Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size on wall surface as required.

Up to 35 Sq.mm fixed with 25 mm x 2 mm thick suitable length red oxide and enamel painted MS clamp and base, pvc rawl plug and screws of sufficient size with spacing 0.6 Mtr. Between Clamps.

Above 35 sq. mm and upto 95 sq. mm fixed with 40 mm x 3 mm thick suitable length red oxide and enamel painted MS clamp and base, pvc rawl plug and screws of sufficient size with spacing 0.6 Mtr. Between Clamps.

Above 95 sq. mm and upto 185 sq. mm fixed with 40 mm x 4 mm thick suitable length red oxide and enamel painted MS clamp and base, pvc rawl plug and screws of sufficient size with spacing 0.6 Mtr. Between Clamps.

Add extra in item no. 11.1 to 11.4 for Laying Charges for cable through Manual Boggi by making pit at regular interval and repairing the pit after laying of cable with PCC/ Bitumin as required.

Supplying and making one end termination with Nickel plated heavy duty brass single compression gland (as per IS 12943-1990)) SIBG type consisting of Check Nut, Gland Body, Metal Washer(3 Nos.), Outer Seal Rubber Ring, Compression Nut, heavy duty aluminium lugs (as per IS 8309 -1993) duly crimped with crimping tool, PVC tape as per IS 8337-1976 of following size of PVC insulated & PVC sheathed/ XLPE aluminium conductor cable of 1100 volt grade as required.

3.5 x 25.0 sq.mm

3.5 x 50.0 sq.mm

3.5 x 70.0 sq.mm

3.5 x 185.0 sq.mm

3.5 x 95.0 sq.mm

3.5 x 120.0 sq.mm

Providing & Laying XLPE insulated three core Armoured Aluminium cable for working voltage 11 K.V.(E) confirming IS :7098 P - 2 with H4- Grade electrolytic aluminium conductor confirming to IS: 8130 class-2 of purity >99.6 %, Insulation Screening: Extruded Semiconducting Compound followed by helically wrapped Copper Tape, round / flat strip armouring of cables , Inner / outer sheath PVC type ST-2 confirming to IS:5831 in existing RCC pipe / Hume Pipe/ Stoneware Pipe/ PVC pipe/ open duct/cable trench / Cable tray (with cable tie) including testing etc. as required of following size.

3 core 185.0 Sq.mm

S/F cable route marker with 10cm x 10cm x 5mm thick or 10 cm dia. G.I.plate with inscription thereon, bolted/welded to 35mm x 35mm x 5mm angle iron, 60cm long and fixing the same in ground in C C ( 1:3:6 ) as required

P / L of Double wall corrugated HDPE pipe confirming to IS : 16205 P-24, Stiffness Class 750 N, Externally corrugated and having smooth surface inside with HDPE Coupler, Elbow, Tee at required Depth below the ground for laying cable of following Nominal Outer dia. MFR Test report from NABL accrediated is to be submitted.(Excavation of trench, CC Haunching, Back filling of Earth with compaction is to be Paid Extra).

labour charges for Excavating trenches of required width for pipes dressing of sides, ramming of bottoms, depth up to 1.5 Mtr. including taking out the excavated soil, and then returning the soil as required in layers not exceeding 20cm in depth including consolidating each deposited layer by ramming, watering etc. and disposal of surplus excavated soil as directed within a lead of 50 Mtr.:

All kind of Soils

Hard Rocks

Add Extra for Laying of one number additional XLPE power cable of 11/33 KV (Earthed) voltage grade direct in ground in the same trench in one tier horizontal formation including excavation of trench of size additional 20 cm in width, with procedure as per following points:- (a) Make a river sand bed of height 125 mm along the trench, (b) Lay another cable in middle of trench in such manner that spacing between another cable is 20 cm, (c) Provide sand bed of height 125 mm on top of the cable. (d) Lay the protective Common burnt clay F.P.S. Bricks of Class designation 75 / Sand stone slabs of 50 mm thickness and 225 mm wide just above the sand bed vertically across the cable ( Approx. 9 no. Bricks per Mtr.) (e) Backfill the excavated soil leaving 300 mm from the Ground level. (f)Lay the Cable warning tape and again back-fill the remaining portion of the trench upto the ground level and compacting the earth

Add Extra in Item no. 13.5 if Excavation done in Hard Rock / CC road / TAR Road and making Good the same

Providing & making heat shrinkable type indoor/outdoor/straight through terminations/ joint kit suitable for 11 KV / 33 KV (Earthed) cable with required components, prepration of cable ends. Type test report should be as per IS13573:2011 including testing etc. as required of following sizes.

11 KV End Termination Kit Indoor type

3 core 120/150/185 Sq.mm

11 KV End Termination Kit Outdoor type

3 core 120/150/185 Sq.mm

Pipe Earthing as per IS:3043- 1987 with 3.0 Mtr. Long, 40 mm dia. ' B ' class G.I. Pipe IS: 1239 (Part-1) 2004, Equivalent to BS : 1387 with perforated holes of 12 mm dia ,including all accessories like nut, bolts, reducer, nipple, wire meshed funnel, Heavy duty weather proof poly-propylene earth inspection chamber as per requirement of IS/IEC 62305 and tested as per IEC 62561-5 with lockable Jam free lid suitable for safe working load 60 kN of round / square size 250 mm, and Height 250 to 300 mm and embodying the pipe complete with alternate layers salt and coke/ charcoal, testing of earth resistance for value of 5 ohms or less as required.

Plate Earthing as per IS:3043 with Hot dipped G.I. Earth plate of size 600mm x 600mm x 6.0mm by embodying 3 to 4 mtr. below the ground level with 20 mm dia. G.I. 'B' class watering Pipe ,including all accessories like nut, bolts, reducer, nipple, wire meshed funnel, Heavy duty weather proof poly-propylene earth inspection chamber as per requirement of IS/IEC 62305 and tested as per IEC 62561-5 with lockable Jam free lid suitable for safe working load 60 kN of round / square size 250 mm, and Height 250 to 300 mm. and embodying the pipe complete with alternate layers salt and coke/ charcoal, testing of earth resistance for value of 5 ohms or less as required.

Plate Earthing as per IS:3043 with copper Earth plate of purity >95% of size 600mm x 600mm x 3.0mm by embodying 3 mtr. below the ground level with 20 mm dia. G.I. 'B' class watering Pipe ,including all accessories like nut, bolts, reducer, nipple, wire meshed funnel, Heavy duty weather proof poly-propylene earth inspection chamber as per requirement of IS/IEC 62305 and tested as per IEC 62561-5 with lockable Jam free lid suitable for safe working load 60 kN of round / square size 250 mm, and Height 250 to 300 mm. and embodying the pipe complete with alternate layers salt and coke/ charcoal, testing of earth resistance for value of 5 ohms or less as required.

Supply & Laying following size earth strip in horizontal or vertical run in surface by means of Earth strip DMC Insulator including riveting/ soldering/ welding, Jointing shall be done by overlapping double the width of strip and with 2 set of Brass (for Cu strip) / GI (for GI Strip) nut bolt & spring washer spaced at 50cm making connection etc. as required.

25mm x 5mm copper strip

25mm x 3mm G.I. ( Hot Dipped ) Strip

32mm x6mm G.I. ( Hot Dipped ) Strip

Supply & Laying following size earth wire in horizontal or vertical run in ground/surface/recess including riveting, soldering, saddles, making connection with GI/Cu purity purity >95% thimble etc. as required.

8 SWG G.I. ( Hot Dipped ) Wire

P & F of Heavy duty weather proof poly-propylene earth inspection chamber as per requirement of IS/IEC 62305 and tested as per IEC 62561-5 with lockable Jam free lid suitable for safe working load 60 kN of round / square size 250 mm, and Height 250 to 300 mm.

SITC of 11kV 630 Amps 21KA for 3 Sec. SF6 insulated, outdoor duty (IP54) , Extensible / Non extensible type Ring main unit (RMU) manually operated in combination of VCB modules and Load Break switch consisting of Copper busbar in SF6 insulated stainless steel Outdoor enclosure of thickness of 2 mm and tank of stainless steel Outdoor enclosure of thickness 3mm with manometer. The HV switchgear and control gear should be confirming to IEC-62271-100, IEC-62271-200-2003 & IEC-60694-1996. The RMU should be internal arc tested for 21KA for 1Second with IAC-AFL classification for both Cable chamber and gas tank as per IEC 62271-200 and LBS to be rated for class E3 as per IEC 62271 - 103. Vacum Interrupter should be same as used during type test of RMU. Each feeder of RMU should have voltage presence indicator. and VCB feeder should consist of 1 no. microprocessor based Self powered numerical relay with over Current/ earth fault & short circuit protection with each VCB feeder, 3 Nos. Protection CT shall be of Burden 2.5VA, ratio 50/1A, Class of Accuracy class 5P10 for O/C and E/F protection for each VCB. Load break switch feeder shall have Fault Passage indicator, Right angle boots for all the feeder Modules, Remote trip, Emergency Stop, Cable cover interlocking, Trasnformer protection tapo card etc. All the type test certificates as per IEC and CEA from Third party NABL / CPRI / ERDA accrediated lab to be submitted. (Cost of RCC Foundation / Steel Structure to be paid Extra)

Extensible 3 way RMU with 1 no. VCB & 2 No. Load Break Switch

Supply & fabrication steel structure with MS channel / angle / joist / ISMB / sheet etc. including welding, rivetting, cutting, nut & bolt , one coat of primer & two coat of enamel paint etc. as required complete in all respect. .

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level

1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Providing and fixing welded mesh/expanded metal mesh 25 mmx 25 mm x 3mm in frame work, flat iron beading 20x3mm including top cross laps inside and out sides welding, iron bolts, crews, clips etc. including two coat of red oxide and two coat of enamel paint or more required complete with frame work with 50 X 50 X 6mm angle iron post 30 cm in ground embeded in cement concrete 1:3:6 (30X30X45cm) at corner and every three mtr including painting with one coat of primer and two coat of enamel paint work will be done as per direction of engineer incharge of size complete in all respect. .

Supply, Fabricating & installing following sizes of Hot dipped Galvanized iron Ladder type cable tray ( Galvanized thickness not less then 50 microns) with rungs at span of 250mm including horizontal and vertical bends, reducers tees,cross members and other accessories as required and duly suspended from the ceiling/wall with M.S. suspenders etc. as required.

100mm x 50mm x 1.6mm

150mm x 50mm x 1.6mm

300mm x 50mm x 1.6mm

600mm x 50mm x 2.0mm

P & F in position frame made out of M.S. angle (riveted or welded) finished with two coats of red oxide and two coats enamel paint including cutting, welding, holes etc.of following sizes as required.

35mm x 35mm x 5mm

Providing and constructing masonry chamber 90 x 90 x 100 cms (HxWxD) inside with brick work in cement mortar 1:5 (1cement : 5fine sand) for water meter ,M.S. cover (6mmthick sheet with locking arrangement, 600 x600 with M.S. frame etc. all epoxy coated and R.C.C. top slab 1:2:4 mix(1 Cement : 2 coarsesand : 4 graded stone aggregate 20mm nominal size) including necessary excavation, back filling foundation concrete 1:5:10 mix (1 cement : 5 fine sand and 10 graded stone aggregate 20mmnominal size) leaving a pocket of 30x30 cm with out concrete and filled with pebbles andinside plastering with cement mortar 1:3 (1 cement : 3 coarse sand) 12 mm thick finished with a floating coat of neat cement and outside plaster finished rough complete.

Providing & Fixing of Recessed/surface mounting heavy duty Vertical TPN Distribution board with Metal end box with provision of incomer suitable for 3/4 pole MCCB and SP / TP MCB up to 63 Amps. as outgoing ,made out from Galvanized steel / CRCA sheet , powder coated conforming to IS-8623-1 & 3 / IEC 61439- 1 & 3. complete with insulated 125/160/200/250 Amp. copper bus bar, brass neutral bars with shrouds, brass earth bar , color coded interconnecting wire set of suitable rating and din bar, door earthing arrangement, masking sheet, making internal DB terminations with copper lugs, ferrules, detachable gland plate, including making connections, testing etc. as required.

Double door IP-43 & IK-09 with Provision of Incomer MCCB up to 125 A Rating with Metal end box

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