Annual Maintenance contract for attending complaints and minor project works in substation, street light and cables in IIT Madras campus for the year 2020-2021

Amount

Part-A Street Lights

Labour charges (4 Wiremen & 4 Helper )for rectification of fault in control boxes timer boxes meant for street lights ,fuse of calls,replacement of spares, shifting of fittings cleaning tightening cable faults and making the fitting in good working condition.

Supplying of following accessories for replacement in item no.1 and when required during the contract period.

400w MH Fitting choke

400w MH Fitting Lamp

400w MH Lamp Holder

150w MH Fitting choke

150w MH Fitting Lamp

150w MH Lamp Holder

Supplying and fixing of 8-12 W LED Direct lamp & holder with minor wiring modification.

Supplying and fixing of following street light/garden/gate light fittings on the existing MS tubular poles/pipes with necessary connections.The model will be got approved from the Engineer Incharge before installation

1 X 25W Street light LED fitting complete set with built in Drive. (Philips Model BRP 020 1x 10LED-HP/CW/PSU GR)

1 X 45w LED Street light fitting complete set . Philips BRP320 1x24LED

1 X 60w Street light LED fitting complete set with built in Drive. (Crompton or Philips)

1 X 90w Street light LED fitting complete set with built in Drive. Philips make BRP320 2x24

150W LED Flood Light fitting IP65 LFLN-150-CDL/60 OR Equivalent in Philips make

200W LED Flood Light fitting IP65 LSFO-200-CDL/60 OR Equivalent in Philips make

Gate light fitting with 45W LED Lamps and connections.

Supplying and replacing of 18W LED lamp on the existing fitting.

Supply and replacing the modular timer switches Maxi Rex 4QTB Eqvt in L&T and GE with IP53 on the existing hylem sheet with necessary connection

Supply and replacing the faulty L&T/Siemens/ Legrand make 40A TP power contactor on the existing hylem sheet with necessary connection

Supply and fixing of streetlight PVC control box of 200x150x100mm size with suitable clamp with hylem sheet inside comprising 63A 4 way connector and a 10A SP MCB with necessay connections.

Supplying and fixing of single MS cowl for street light fiting on the existing pole with necessary bolts and nuts

Supply and fixing of 1.5m length and 25mm dia MS pipes for cable entry for the street light with suitable bend at the bottom.

Removing of 8/6mts damaged MS street light poles and handed over to electrical maintenance office

Erection of MS tubular confirming of 8/6mts long and fixing of 2m long of 40mm dia Cowl pipe including earth work excavation in all soils and subsoil including cement concrete for foundation and construction of masonry pedestal plastering the pedestal coping and white washing the same.

Supplying and fixing of 2 nos 1 ¼ MS pipes in the existing masonary pedastal for the incoming and outgoing street light cables.

Supply, erection testing and commissioning of pedastal mounted street lighting control panel comprising with 63A 25kA TPN MCCB -1 no as incomer , Maxirex 4QTB Timer-1no, 40A TP Power Contactor -1no , Manual & Auto mode toggle Switch(5A), 6-32A TP MCB's- 4 nos as outgoings and a 3phase CT digital energy meter for measuring the energy consumption. Also suitable rating of copper wires has to be used for interconnections between Mains and Power contractor , Power Contactor and out going MCB's including control wiring .The panel should be outdoor mounted with suitable shell and rain hood.

Part-B Substation and Cables

Attending day to day maintenance of HT/ LT equipments, break down work, fuse of calls, emergency faults, major break down inside the entire campus on round the clock service on shift duty work with the following designated staff. (Shift Duty: 3 shifts/day). In Addition to the above one sweeper has to be posted in General shift to clean the main substation and the other unmanned substations as instruted by the Engineer in charge .(Relevant document proofs should be submitted and got approved from the Engineer Incharge before engaging the above staff

Supplying and Terminating the ends of the following 11kV XLPE sheathed alu stranded conductor armored under ground cable with suitable lug / Ferrules socket and using necessary jointing materials with RPG/ Denson make heat Shrinkable Joint Kit.

(a) 3C x 120 Sq.mm

(b) 3C x 240 Sq.mm

(c) 3C x 300 Sq.mm

Supplying and making Straight Through Joint for the following 11kV XLPE sheathed alu stranded conductor armored under ground cable with suitable lugs/Ferrules socket and using necessary jointing materials with RPG make heat Shrinkable Joint Kit.

(a) 3C x 120 Sq.mm

(b) 3C x 240 Sq.mm

(c) 3C x 300 Sq.mm

Supplying and replacing of following ratings of the HRC DIN Type Fuse links in the distribution pillar-boxes. The rate should be inclusive of making holes on the existing copper bus bars and removal of terminations for the existing cable if necessary when attending fault.

63 A DMC HRC Fuse Link

125A DMC HRC Fuse Link

250A DMC HRC Fuse Link

400A DMC HRC Fuse Link

Supplying and replacing of following ratings of the HRC DMC Fuse bases in the distribution pillar-boxes. The rate should be inclusive of making holes on the existing copper bus bars and removal of terminations for the existing cable if necessary when attending fault.

63A DMC HRC Fuse base

125A DMC HRC Fuse base

250A DMC HRC Fuse base

400A DMC HRC Fuse base

Removing the following sizes LT UG cable of size up to 3.5c x400 sq.mm from the trench of 75cm depth including earth work excavation in all soils and sub soils for identifying the faults and relaying the same cable / other cable in the trench, sand filling and brick cover protection of the cable using existing burnt bricks/ removed RCC troughs etc and back filling. consolidated etc as required.

Supplying& Laying of following sizes PVC XLPE insulated alu. Conductor armored LTUG cable in trench of 50cm wide and 75cm depth including earth work excavation in all soils and sub soils spreading 6cm thick river sand at the bed of the trench and brick cover protection top of the cable using burnt bricks and back filling, consolidated in a regular interval of 25cm thick rammed and complying with standard specification.

4c x 10 sq.mm PVC insulated armoured aluminium cable.

3.5c x 35 sq.mm XLPE insulated armoured aluminium cable.

3.5c x 70sqmm XLPE insulated armoured aluminium cable.

3.5c x 150 sq.mm XLPE insulated armoured aluminium cable

3.5c x 240 sq.mm XLPE insulated armoured aluminium cable.

3.5c x 400 sq.mm XLPE insulated armoured aluminium cable

12 core x 2.5 sqmm copper armoured control cable

Supplying and making end termination for following sizes alu. Conductor LT UG cable using suitable compression gland with required copper ferulles / socket and other jointing materials

4c x 10 sq.mm

3.5c x 35 sq.mm

3.5c x 70sqmm

3.5c x 150 sq.mm

3.5c x 240 sq.mm

3.5c x 400 sq.mm

Supplying and making straight thro cable joint for following sizes aluminium or copper Conductor LT UG cable using Heat Shrinkable /cast resin materials ( M-Seal-3M or RPG) with required copper ferulles / socket and other jointing materials.

4 core 6 or 10 sq.mm ( cast resin)

3.5 core 35 sq.mm ( cast resin)

3.5 core 50 sq.mm ( cast resin)

3.5 core 70 sq.mm ( cast resin)

3.5 core 150 sq.mm ( Heat Shrinkable)

3.5 core 240 sq.mm ( Heat Shrinkable)

3.5 core 300 sq.mm ( Heat Shrinkable)

3.5 core 400 sq.mm ( Heat Shrinkable)

Supplying and fixing of the following MCCB's in the existing MV panel with necessary incoming and outgoing connections without enclosure and including extended bars /wires if required

63 A TPN MCCB Fixed Thermal and Magnetic release

125 A TPN MCCB,25 KA Fixed Thermal and Magnetic release

200 A TPN MCCB,35 KA Adjustable Thermal and Magnetic release

250 A TPN MCCB,35 KA with Adjustable Thermal and Magnetic release

400A TPN MCCB,35 KA with Adjustable Thermal and Magnetic release

400A 4 P MCCB,35 KA with Adjustable Thermal and Magnetic release

630A TPN MCCB,35 KA with Adjustable Thermal and Magnetic release

800A TPN MCCB,35 KA with Adjustable Thermal and Magnetic release

250A TPN MCCB,35 KA Adjustable Thermal and Magnetic release with enclosure

400A TPN MCCB,35 KA Adjustable Thermal and Magnetic release with enclosure

TAP OFF Box with 63A TPN 35kA MCCB

TAP OFF Box with 125A TPN 35kA MCCB

TAP OFF Box with 200A TPN 35kA MCCB

Earthing with copper earth plate 600x600x3mmthick including acessories and providing masonary enclosure with cover plate having locking arrangement and watering pipe of 2.7m long etc with charcoal/coke and salt as required.

Earthing with GI earth plate 600x600x6 mmthick including acessories and providing masonary enclosure with cover plate having locking arrangement and watering pipe of 2.7m long etc with charcoal/coke and salt as required.

Supplying and laying of following size earth flats at 0.50 mt below the earth including soldering/welding as required

Single run of 16 sqmm multistranted copper wire in a suitable PVC pipe and clamps

25 x 5mm copper strip

25 x 5mm GI strip

50 x 6 mm GI Flat

Supplying and replacing of 110V AC/DC indication LED lamps as instructed by the Engineer incharge.

Supplying and replacing of 220V AC indication LED lamps as instructed by the Engineer incharge.

Testing of earth electrodes using necessary testing equipment and improve the earth by excavating the soil and sub soil and refilling the same with alternate layer of charcoal/coke and salt if required. The values are to be entered in a seperate register and submitted to the Engineer incharge . The work should be inclusive of replacement of bolts and nuts, white washing the masonary pedastals , paint marking the earth values, date of testing done , due date for the next test and pit number on the enclosures and also inside the earth pit.

Labour charges for making temporary connections to pump motors / streetlights / Residential buildings in case of existing cable failure by laying copper / aluminium wires from the nearest source of supply. (Necessary wires has to be supplied by the contractors and removed after making permanent connections)

Removing the existing LT panel with bus coupler from the foundation by removing the existing LT UG cable feeders of size varying from 70 to 400 sqmm (App. 12 terminations / Panel) and transport the LT panel to the other substation / Godown inside the premises.

Erection, testing and commissioning of the LT panel with Bus coupler on the existing trench with necessary channels. L angles, civil works, chipping and grouting etc. The rate should be inclusive of earthwork for removing the existing LTUG cable with suitable glands and sockets ( app 12 terminations/ panel with cable size varies from 70 to 400 sqmm) the tenderer should inspect the site before quoting.

Supplying and replacing of silica Gel for the Power/ Distribution transformer breathers

Supplying and replacing of mineral oil suitable Power/ Distribution transformer as per IS 335/1993

Painting of following size street light poles by scrapping the pole using necessary scrapping material including single/double arm cowl and painted with two coats of Aluminium painting after scrapping .Numbering of each pole has to be done as instructed by the Engineer Incharge.The incoming and out going cables should properly clamped at suitable interval till the control box including necessary connections.The rate should be inclusive of enamel painting with yellow and black stripe for coping , arrangement of suitable ladder if necessary .

6 mtrs height MS pole ( MS sewaged tublar pole of 75 mm dia and 40mm dia for cowl ) Note: 1/5 th height of pole is below ground level.

8 mts height MS pole (MS sewaged tubular pole 6000 x 100mm dia / 2000 x 75 mm dia & cowl 40mm dia) Note: 1/5 th height of pole is below ground level.

9 mts height Mspole (MS sewaged tubular pole 6000 x 192.4 x 5.2mm / 1500 x 145.8 x 4mm / 1500 x 97.2 x 3.25 mm)

12 mtrs height MS pole(MS sewaged tubular pole 9000 x 192.4 x 5.2mm / 1500 x 145.8 x 4mm / 1500 x 97.2 x 3.25 mm)

Painting of following size Distribution Pillar boxes by scrapping the pillar box ( inner side and outer side) using necessary scrapping material and painted with two coats of Aluminium painting after scrapping .Numbering of each pillar box& in/out going cable identification in the insidethe pillar door ( approximately 300 letters @ 1 inch Size per pillar box)has to be done as instructed by the Engineer Incharge. The rate should be inclusive of white washing the pedastal.

Main Pillar Box ( 1370 x 1280 x 300 mm)

Mini Pillar Box ( 1000 x 1030 x 300 mm)

Painting of street light timer box of 450 x 450 x 350 mm)by scrapping the box ( inner side and outer side) using necessary scrapping material and painted with two coats of Aluminium painting after scrapping .Numbering of each timer box& in/out going cable identification in the inside the box door ( approximately 80 letters @ 1 inch Size per Timer box)has to be done as instructed by the Engineer Incharge. The rate should be inclusive of white washing the pedastal.

Painting of MV Panel Board by scrapping the Board using necessary scrapping material and painted with two coats of siemens grey colour enamel paint .Numbering of each timer box& in/out going cable identification for individual feeders on the door ( approximately 200 letters @ 1 inch Size per Panel Board ) has to be done as instructed by the Engineer Incharge. The rate should be inclusive of white washing the pedastal.

Delhi Electrical Construction

M/s T and C ENGINEERS PVT LTD

CHENNAI ENGINEERING SERVICES