NIT No. 06 Item No.6 (2024-25)

Supply of 4 X 10 sq. mm PVC insulated & PVC sheathed/XLPE aluminium armoured conductor 650/1100 voltage grade cable confirming to 1S: 7098. Make:- Grandley/Gloster/Havells/ DJB Approved.

Supply of 25sq. mmx4 core pvc/xlpe insulated (heavy duty) electrical cables for working voltage upto and including 1100 volts to is:1554 (part-i) 1988/7098 (part – i) with aluminium conductor – isi marked power cable- aluminium conductor.Make:- Grandley/Gloster/Havells/DJB approved

Supplying and making end termination with brass compression gland and aluminium lugs for 4X10 sq mm of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

Supplying and making end termination with brass compression gland and aluminium lugs for 4X25 sq mm of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

Excavation of well near the entry point of main feeder cable of clarifier of about the size of 6X6'X18' by hydraulic/manual means by taking all the precautions for the working personals and other structures nearby. This includes getting out the excavated earth and refilling after execution of the cable replacement work. Making arrangement of ballies, planks, steel plates and other supporting items in such a manner that no harm occurs to the workers during execution of work in the deep well.

Dismantling of G.I. Pipe of size of 80 mm dia. carrying the feeder cable, from the bend in the bottom of the excavated well and making of new G.I. bend arrangement for fixing of new G.I. Pipe in the bend. The lengh of the G.I. Pipe to be replaced is approximately 6 meters. Making arrangement of G.I. end cap on the top of the pipe so as to make it sound against entry of any foreign objects. making arrangement of cable exit of the pipe to the MCB box.

Arrangement of all safety equipment for the protection of staff to work at height of clarifier and in the deep well outside the clarifier such as Safety belts, safety shoes, gloves, helmets etc as per site requirement.

Cleaning of existing M.S. Pipe, under the clarifier structure with the help of rust removal chemicals and with heavy water pressure. Removal of old cable from the G.I. pipe, below the clarifier's bottom surface with the help of heavy manual labour/Chain pulley block. The work is to be carried out in the 20 fit deep excavated well, hence must be done taking all the precautions.

Drawing of new 4 X 10 sq. mm PVC cable in the existing G.1. underground pipe, below the clarifier's bottom surface with the help of Heavy manual labour/Chain pulley block etc in very cautionary manner to prevent the cable of any damage/harm.

Supplying and laying 6 SWG G.I. wire in double running (80mtrs approx.) in the existing 100 mm dia. G.I. pipe below the clarifier structure along with new feeder cable for supporting the cable at the time of drawing and for earthing purpose, including connection/termination with GI thimble etc. as required.

Supplying and fixing of Polyester IP66 Enclosure Plain Door of size 300 X 250 X 140 mm (BRES-325, Cape India) with 63 A FP MCB (L&T) installed inside the box and the same to installed on angle Iron frame of size 250 X 1000 mm long made out of MS angle of size 35 X 35 X 5 mm duly hot dip galvanized and installation of MS frame in ground by excavation of ground making CC (1:2:4) foundation of size 350 (W) X 200 (H) X 200 (D) and refilling the balance space etc. as required.

Providing & fixing of slipring with complete carbon bush set by using of nut bolts (as per existing). Making of connection of the cable on the new slipring and from slipring to the control panel of the flocculator and Bridge.

Earthing with copper earth plate 600 mm x 600 mm x 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 meter long etc. with charcoal/ coke and salt as required.

Supplying and laying 25 mm x 5 mm G.1 strip at 0.50 meter below ground as strip earth electrode, including connection/terminating with G.1, nut, bolt, spring, washer etc. as required (Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50mm).

Supplying and fixing of 63 amp 6 way Bus Bar Chamber Box made out of 1.6mm thick Sheet steel duly painted with powder coating. Including making connections of 1 No. Incoming and 2no. outgoing cables to starters of the flocculator and Bridge.

SITC of modular/ combinable polycarbonate insulated outdoor type feeder panel housing, shock proof, weather proof, rust proof, UV resistant, halogen free, silicone free, corrosion proof, protection class: Il safe, IP 65 according to IEC 61 439-2, IEC 60 999, DIN EN 50 262, DIN 43 880, IEC 60 529/ DIN VDE 0470 Teil 1 totally insulated, having internal embedded gasket with provision of cable entry through glands. The panel board should have following control panel MCB and accessories etc complete with connections& Interconnections etc as required. Note 1: For mounting of meters, indicating lights & push button only box with hinged door with triangular lid to be used. Note 2: For mounting of 5 HP DOL starter MS angle frame should be hot dipped galvanized and made out of MS angle of size 35 x 35 x 5 mm with all required material/arrangement as per site requirement. The Panel should consist of the followings: (a) 18 A, TP, power contactor (MNX 18, L&T)-1 No (b) 1 NO +1 NC side mounting add-on aux. contact block(L&T)-1No. (c) 6-10 A thermal over load relay (L&T)-1 No. (d) Single phasing preventer (L&T)-1 No. (e) 16 A, FP, 10 kA, MCB (L&T) - 1 No (e)16 A , FP, 10 KA MCB (L&T)-1 No. (f) LED indicating lights red, Yellow, Blue & green (L&T) - 6nos. (g) Push Button with element (L&T)-2 Nos. (h) 6 A SP MCB (L&T) - 1 No. (i) 32 A, 3 way open connector - 1 No. (Digital 3 phase VAF meter (L&T) 1 No. (j)Digital 3 phase VAF meter (L&T)- 1 No. (k) 50/5A, 5 VA, 5.0 class current transformer (AE)-3 No

Laying of 4 X 10 sq. mm cable up to both the starter panels of flocculator and bridge with the help of M.S. Clamps under the Clarifier bridge structure by following all the precautions and safety manual as the work is to be carried out at height about 20 feet.

Laying of 25sq. mmx4 core cable from main panel up to outer junction box of clarifier by digging of ground up to 1.5 fit depth with the help of electric hammer machine and manual labour by following all the precautions and safety manual as the work is to be carried out at site.

Testing and Commissioning of the complete system for satisfactory operation.

Raj Engineering Co.