MAINT/REPAIR/REPLACEMENT OF EXTERNAL ELECTRIC SUPPLY SYSTEM AND ASSOCIATED WORKS UNDER AGE E/M (CG) CHENNAI

Amount

E/M ITEMS

Taking out of old unserviceable LT cable from any location complete all as specified and directed by Engr in Charge.

Supply and lay light grade GI pipe (ISI Marked) as cable protection to be fixed on wall / pole with necessary clamps as per existing or in road crossing as ordered of size 80 mm bore complete all as directed including taking down old U/S one. Note :- Unit rate quoted is deemed to be inclusive of MS clamps required to be fixed on pole.

Supply and lay light grade GI pipe (ISI Marked) as cable protection to be fixed on wall / pole with necessary clamps as per existing or in road crossing as ordered of size 50 mm bore complete all as directed including taking down old U/S one. Note :- Unit rate quoted is deemed to be inclusive of MS clamps required to be fixed on pole.

Supply and lay light grade GI pipe (ISI Marked) as cable protection to be fixed on wall / pole with necessary clamps as per existing or in road crossing as ordered of size 40 mm bore complete all as directed including taking down old U/S one. Note :- Unit rate quoted is deemed to be inclusive of MS clamps required to be fixed on pole.

Supply and lay in trenches/drawn through pipes or in road crossings/ paths/drains/ ducts/ floors/ along poles/ equipment etc., of LT cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, heavy duty electric power cable with stranded aluminium conductor, 1100 volts grade confirming to IS-7098 (Part-I) 1988 of following size including connecting up using suitable size aluminium lugs with all fixing & connecting accessories, testing and commissioning etc., complete all as specified and as directed. Note : [a] Excavation earth work, sand cushioning and cable protection, GI pipe, DWC pipe etc., shall be measured and paid separately under relevant items. [b] The rate quoted by the bidder shall deemed to be inclusive of the cost of aluminium thimbles/lugs of suitable sizes.

150 Sqmm x 3.50 core

95 Sqmm x 3.5 core.

70 Sqmm x 3.5 core.

50 Sqmm x 3.5 core.

35 Sqmm x 4 core.

25 Sqmm x 4 core.

16 Sqmm x 4 core.

10 Sqmm x 2 core.

Excavation in trenches n. exc 1.5 mtr wide and n. exc 1.5 mtr in depth for laying of cable and getting out in hard /dense soil complete all as specified and as directed.

Returning filling in soft/loose soil including spreading, levelling, watering and well ramming in layers not exceeding 25cm complete all as specified and as directed

Removing excavated soil to a distance not exceeding 50 Metre and depositing where directed at a level not exceeding 1.50 Metre above the starting point complete all as specified and as directed.

Supply and lay DWC HDPE pipe lSI marked in trenches or in cable ducts or fixed on walls using clamps along with all accessories like socket, bend, couplers etc. conforming to IS 14930, Part II complete with fitting and cutting, jointing etc. of size 63 x 50 mm dia (OD X ID) complete all as specified and as directed by the Engr-in-Charge.

Supply and lay of DWC HDPE pipe lSI marked in trenches or in cable ducts or fixed on walls using clamps along with all accessories like socket, bend, couplers etc. conforming to IS 14930, Part II complete with fitting and cutting, jointing etc. of size 90 x 75 mm dia (OD X ID) complete all as specified and as directed by the Engr-in-Charge.

Supply and fix in repair, Street light cable junction box made of polycarbonate of size 155mm x 210mm x 92mm suitable for 10-16 Sqmm cable with knockouts, ''halogen free and weather proof', for outdoor installation (with metric knockouts for cable entry) IP-66 protection all as per HENSEL Cat No. DK-1616G or equivalent of other specified makes including short cable entry gland tread type with lock nut, four way Bakelite terminal with brass studs and nuts, GI flat strip clamps of size 25mm X 3mm with bolts, nuts and washers for fixing with MCB one 06 Amps inside the junction box complete all as specified and as directed.

S&F MCCB 125 Amps, 4 Pole, 16 KA, Ics = 100% (Icu), fixed TM, 415 Volts 50 Hz, AC, suitable for existing LT panel/feeder pillar including taking out old existing unserviceable MCCB from panels etc complete all as specified and as directed.

S&F MCCB 100 Amps, 4 Pole, 16 KA, Ics = 100% (Icu), fixed TM, 415 Volts 50 Hz, AC, suitable for existing LT panel/feeder pillar including taking out old existing unserviceable MCCB from panels etc complete all as specified and as directed.

S&F MCCB 63 Amps, 4 Pole, 16 KA, Ics = 100% (Icu), fixed TM, 415 Volts 50 Hz, AC, suitable for existing LT panel/feeder pillar including taking out old existing unserviceable MCCB from panels etc complete all as specified and as directed.

Supply and fixing (in replacement) of MCCB 4 pole 160 Amps with breaking capacity 25 KA 415 volts on panel mounted type with breaking capacity 36 KA Magnetic thermal setting adjustable 70-100% including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminum lugs/ferrules etc. after taking out the existing u/s and making good the disturbed surface for following capacity.

Supply and fixing (in replacement) of MCCB 4 pole 200 Amps with breaking capacity 36 KA 415 volts on panel mounted type with breaking capacity 36 KA Magnetic thermal setting adjustable 70-100% including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminium lugs/ferrules etc. after taking out the existing u/s and making good the disturbed surface for following capacity.

Supply and fixing (in replacement) of MCCB 4 pole 250 Amps with breaking capacity 36 KA 415 volts on panel mounted type with breaking capacity 36 KA Magnetic thermal setting adjustable 70-100% including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminium lugs/ferrules etc. after taking out the existing u/s and making good the disturbed surface for following capacity.

Supply and fixing (in replacement) of MCCB 4 pole 400 Amps with breaking capacity 36 KA 415 volts on panel mounted type with breaking capacity 36 KA Magnetic thermal setting adjustable 70-100% including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminium lugs/ferrules etc. after taking out the existing u/s and making good the disturbed surface for following capacity.

M&L for Earthing complete in repairs with Advance encapsulated compound based CPRI tested maintenance free, pipe-in-pipe technology upgraded (Zinc & Alloy Coated), ZINC COATED (80-100) microns with pure Zinc(99.9%) & ALLOY COATING (200-250)microns. Earthing System confirming IS 3043.The outer and inner pipe should be 48.3mm &26.4mm 2mtrs Length, Zinc coated with additional special Alloy coating 300mm on the topside for additional protection of the Terminal. The annular space between the pipes being filled up with COMPACT FILL(CF) (Crystalline Conductive Compound). The COMPACT FILL (CF) mixture which is machine pressed in the pipes should not disintegrate or collapse when outer pipe corrodes.

The inner pipe should be extended with terminals for connectivity ,The job includes digging the pits and refilling the same by BARONS Electrodite OR Conductolite Back Fill compound (Ground Enhancer), the BFC should be eco friendly it should not contain environmentally hazardous material/metal having ROHS Certification from NABL accredited lab. The earth pit should be provided with a FRP OR EPCC earth pit cover for protection and safe guard of terminals. In areas where soil condition is bad, GOOD EARTH ie BLACK COTTON OR MOISTUROUS NORMAL SOIL is to be arranged to fill the excavated pits by mixing the arranged soil with BFC 2 TO 4 bags ELECTRODITE 0R 2-4 BAGS CONDUCTILITE BFC FOR INSTALLATION OF EARTH ELECTRODE. The electrode should be of galvinised (80-100 micron) along with earth lead as Galvanised steel strip of size 32 X6 mm, 7.5 m. including excavation earthwork etc connected to electrical eqpts/panels and testing on completion all as specified and directed by Engineer in charge.

Supply & fix 1.5 Sq.mm x 3 core, 240volts Copper Conductor cable heavy duty PVC insulated, round sheathed ISI marked in PVC rigid non metallic conduit complete all as specified and as directed.

M&L for painting to steel tubular pole 9/ 11 mtr long any type with applying two coats of aluminium paint over a coat of primer after preparation of surface of the pole including numbering of pole complete all as specified and as directed.

M&L for cable end termination kit indoor/out door, heat shrinkable type suitable for XLPE/ PVC cables of size 150 Sqmm to 185 sqmm 3½ core with working voltage 1100 volts complete all as specified and as directed.

M&L for cable end termination kit indoor/out door, heat shrinkable type suitable for XLPE/ PVC cables of size 240 Sqmm to 300 sqmm 3½ core with working voltage 1100 volts complete all as specified and as directed.

M&L for cable jointing kit straight through, heat shrinkable type suitable for XLPE/ PVC cables of size 150 Sqmm to 185 sqmm 3½ core with working voltage 1100 volts complete all as specified and as directed.

M&L for cable jointing kit straight through, heat shrinkable type suitable for XLPE/ PVC cables of size 240 Sqmm to 300 sqmm 3½ core with working voltage 1100 volts complete all as specified and as directed.

M&L for Plain cement concrete (1:3:6) type C-1 using 20 mm graded stone aggregates as finishing road/concrete surface / coping of poles including finishing to exposed concrete surfaces even and fair complete all as specified.

S&F in repairs busbar chambers 4 way 100 Amps outdoor type (IP65/66) pole/wall mounted all as per Havells Cat Part No. IHBC010004 or equivalent of other specified makes including provision of fixing on pole by means of suitable size of clamps with nuts and bolts including necessary connection including taking down old unserviceable one complete all as specified and as directed.

S&F in repairs busbar chambers 4 way 200 Amps outdoor type (IP65/66) pole/wall mounted all as per Havells Cat Part No. IHBC020004 or equivalent of other specified makes including provision of fixing on pole by means of suitable size of clamps with nuts and bolts including necessary connection including taking down old unserviceable one complete all as specified and as directed.

Locating fault of LT underground cables any no. of core of size 95 - 300 Sq. mm laid in trenches using fault locator machine and repairing the same by making LT joint ferrule etc. including necessary excavation & earth work up to 10 metre length, taking out the protection cover, sand and faulty cable and relaying the cable after necessary repair including refilling of sand and relaying of protection cover and RFR complete all as directed by Engineer-in-Charge. NOTE: (a) The quoted rate includes cost of arranging, shifting of fault locator machine including operator fee, T & P required, any number of times as and when required during the currency of contract. (b) The contractor will have to arrange the fault locating machine. In case contractor fails to diagnose/locate the fault within 04 Hrs of fault intimation, a penalty of Rs. 50/hour will be imposed/ levied. (c) LT joint will be measured and paid separately. (d) The qty catered will be executed different times during currency of work whenever fault occurs

Servicing of LV ACB of capacity 800 Amps, Ics=100%Icu, ICW 65 kA/1s, cat. B, Micrologic 2.0 A by OEM which includes the following :- (a) Dismantling, cleaning and assembling of front cover, push button, locking devices. (b) Dismantling, cleaning of arc chute cover and terminal shield. (c) Dismantling, cleaning, checking and assembling of arc chute. (d) Dismantling, cleaning / greasing and assembling of electrical spring charging motor. (e) Dismantling, cleaning, checking / testing and assembling of tripping coil / closing coil. (f) Dismantling, cleaning and tightening of protection relay. (g) Checking of main contact wear by physical inspection. (h) Cleaning and greasing of breaker main mechanism by Schneider recommended fully synthetic imported multipurpose grease to increase the reliability in terms of mechanical as well as electrical properties and their endurance. (j) Inspection of main spring/tripping spring/locking spring.

(k) Dismantling / cleaning and greasing of spring charging handle. (l) Inspection / cleaning of breaker rear terminals and greasing them. (m) Inspection / cleaning of the changeover contacts of the OF Switch. (n) Dismantling, cleaning, greasing and assembling of cluster. (o) Checking and cleaning, greasing of hand pullout system, racking mechanism of. (p) Chassis and function position indicators (q) Checking and tightening of control unit connection block and chassis rear terminals. (r) Cleaning & cleaning of tightness of wires on WAGO terminals. (s) Checking healthiness of protection relay type Micrologic mounted on Breaker (Tripping current and tripping time) by dedicated OEM Test kit. Note :- RAR/Payment will be done only after submission of detailed report by OEM. Note : Cost of spare parts i.e contacts, Trip unit, Fuses, batteries if any needed during servicing any make is deemed to be included in the quoted rate.

M & L for general servicing the existing outdoor type VCB 800 A, 12 KV, 21 KA from OEM which includes the following :- (a) Checking of fixed and moving contacts. (b) Physical checking (c) Checking of control circuit and tighten the connection if any. (d) Checking of coils. (e) Lubrication work complete. (f) Following tests will be carried out :- (i) Primary injection test . (ii) IR test with megger. Note :- (a) All the necessary consumable which are used during the servicing are imported exclusively for ABB. (b) RAR/Payment will be done only after submission of Detailed service report from OEM.

M&L for Air break Gang operated switch 11 KV triple pole mechanically operated mounted on insulator and steel frame with operating mechanism worked from ground level, for current rating up to 200 amps including making all connections and taking down old U/S one etc., complete all as specified and directed

Supply and fix lightning arresters expulsion type complete with all fittings transmission class, discharge capacity of 65 Kilo amp suitable for 11KV including taking down old U/S one etc., complete all as specified and directed

General servicing of Transformer by Attending minor oil leakages by gasket replacement, Attending HV and LV side bushing, proper crimping of HT/LT Lugs, removing of carbon at joints. Reconditioning of Breather by reactivation of Silica Gel or Replacement & Maintaining Oil Seal. Checking and tightening of all Earth connections, Checking Earth connections for HV and LV Bushings including LV and neutral Following tests are to be carried out to transformer at site: i) Measurement of winding resistance ii) Ratio, Polarity & Phase relationship iii) Load loss (Full load & No loss) iv) Impedance voltage (Shut circuit) v) All category of insulation resistance vi) Induced over voltage withstand vii) Separate source voltage withstand (High Voltage) viii) Transformer oil BD value ix) Temperature rise

Supply and filling in Transformers with Transformer oil of dielectric strength not less than 40 KV and conforming to IS-335:1993 complete all as specified and directed.

M&L for Filtration of Transformer oil of 200 KVA Transformer at CG Md Qtrs Royapuram using oil filtration plant for removing the moisture contents and carbon deposits from the oil in the transformer tank and bringing it to the dielectric strength not less than 40 KV with electrode gap maintaining at 2.5 mm gap for 1 minute with standard transformer oil testing kit complete all as specified and directed.

M&L for Filtration of Transformer oil of 160 KVA Transformer at BMU Royapuram using oil filtration plant for removing the moisture contents and carbon deposits from the oil in the transformer tank and bringing it to the dielectric strength not less than 40 KV with electrode gap maintaining at 2.5 mm gap for 1 minute with standard transformer oil testing kit complete all as specified and directed.

M&L for Filtration of Transformer oil of 400 KVA Transformer at ICGAS Meenambakkam using oil filtration plant for removing the moisture contents and carbon deposits from the oil in the transformer tank and bringing it to the dielectric strength not less than 40 KV with electrode gap maintaining at 2.5 mm gap for 1 minute with standard transformer oil testing kit complete all as specified and directed.

M&L for Filtration of Transformer oil of 750 KVA Transformer at CGRA ThalakanCherry using oil filtration plant for removing the moisture contents and carbon deposits from the oil in the transformer tank and bringing it to the dielectric strength not less than 40 KV with electrode gap maintaining at 2.5 mm gap for 1 minute with standard transformer oil testing kit complete all as specified and directed.

M&L for Filtration of Transformer oil of 750 KVA Transformer at RHQ (East) using oil filtration plant for removing the moisture contents and carbon deposits from the oil in the transformer tank and bringing it to the dielectric strength not less than 40 KV with electrode gap maintaining at 2.5 mm gap for 1 minute with standard transformer oil testing kit complete all as specified and directed.

M&L for Filtration of Transformer oil of 630 KVA Transformer at Tondiarpet using oil filtration plant for removing the moisture contents and carbon deposits from the oil in the transformer tank and bringing it to the dielectric strength not less than 40 KV with electrode gap maintaining at 2.5 mm gap for 1 minute with standard transformer oil testing kit complete all as specified and directed.

Supply and fix Danger notice plate of 1.6 mm thick mild steel sheet with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. Clamps, bolts and nuts of approved size of 20x15 cm for LT complete all as specified and as directed.

Supply and fix Danger notice plate of 1.6 mm thick mild steel sheet enamelled white, with letters , figures and conventional skull and bones in signal red colour and fixed with M.S. Clamps, bolts and nuts of approved size of 25x20 cm for HT complete all as specified and as directed.

Supply and replacement of Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed.

Supply and fixing (in replacement) of Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed.

M/L for cutting the bituminous road in width not exc 0.4 mtr and depth not exc. 0.6 mtr for laying of UG cables and making good the disturbed surfaces with cement concrete 1:2:4 type B1 using 20mm graded aggregate after laying the pipe/cable etc., complete all as specified and as directed.

Supply and fix 11KV Indoor Resin Cast Current Transformer, Wound Primary, Sys. voltage 11kV, RATIO 50/5-5A, 50Hz, CORE 1: 5VA/ 02S, CORE 2: 15VA/5P20, complete all as specified and as directed.

Supply and fix 11KV Indoor Resin Cast Potential Transformer, Open, with prov. for fuse, Sys. voltage 11kV, voltage 11KV, PT 3PHASE PT 11KV/R3- 110V/R3 CL 0.2 /15VA complete all as specified and as directed.

Calibration Charges For CT/PT at Salem Megawin factory with MRT AEE all inclusive of Transportation

Installation and commissioning CT/PT Installation and Testing charges at site all-inclusive of TANGEDCO MRT / O&M coordination liasoning work

Supply and fix protection relay Easergy P1F1 24-250V complete all as specified and as directed.

Supply and fix Power pack 230V AC / 110V DC complete all as specified and as directed.

Supply and fix LV CT 1600 / 5A Indoor Resin Cast, Ring Type, Sys. voltage 1.1kV,ILV: 1.2/4/-kV, 50Hz, 1600/5A, 10VA /5P10 complete all as specified and as directed.

Retrofitting of Relays without compromising the reliability and stability of the existing protection system including Installation charges for relay and testing complete all as specified and as directed.

Installation charges for Power pack 230V AC/110V DC

NAVEEN ENTERPRIESES (BID ID -3351571)

EVEREST ENGINEERING WORKS (BID ID -3358291)

S.M.THIYAGARAJAN AND CO (BID ID -3351752)

RK ENTERPRISES (BID ID -3359526)

SREE VENKATESWARAS CONSTRUCTIONS (BID ID -3358725)

LAKSHMI ELECTRICAL ENTERPRISES (BID ID -3345761)