Additional electrical component under the work of Strengthening of tertiary treated water supply system and laying of TT water lines in left out areas to supply tertiary treated water Chandigarh

Earthing with G.I. earth pipe 4.5 Meter long, 40 mm dia including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe etc. with charcoal/ coke and salt as required. (DSR No. 5.2 E&M)

Plate earthing 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. (but without charcoal/ coke and salt) as required. (DSR No. 5.5 E&M)

Providing and fixing earth bus of 50 mm X 5 mm copper strip on surface for connections etc. as required. (DSR No. 5.20 E&M).

Supplying and laying 25 mm X 5 mm copper strip at 0.50 metre below ground as strip earth electrode, including connection/ terminating with nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of brass nut bolt & spring washer spaced at 50mm) (DSR No. 5.8 E&M)

Supplying and laying 25 mm X 5 mm G.I strip at 0.50 metre below ground as strip earth electrode, including connection/ terminating with G.I. 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) (DSR No. 5.9 E&M).

Supplying and laying 6 SWG G.I. wire at 0.50 Meter below ground level for conductor earth electrode, including connection/ termination with GI thimble etc. as required. (DSR No. 5.7 E&M).

Cables (11 KV) Supplying, laying 11kV grade XLE insulated aluminium conductor armoured cable on exiting cable tray in trenches or directly buried in ground. The scope shall include connection from the existing 11 kV HT line, H-pole and CT/PT arrangement, including necessary tapping, terminations, glands, lugs and accessories. Cable shall be laid on existing cable trays, in trenches, through pipes or directly buried in ground as per site conditions, including excavation, sand cushioning, protective tiles/bricks, warning tape, backfilling and restoration. The work shall also include cable supports, clamps, route markers, armour earthing and termination at both ends. Complete laying and connection up to the incoming terminals of the new 11 kV VCB panel, including testing, jointing, commissioning, labour, tools. tackles and consumables, shall be included in the quoted rate. 240sq mm xlpe ARMOURED CABLE 11 KV (NSI)

Supply & laying of minimum 1100 V grade conforming to IS 7098 part 1 aluminum armoured conductor XLPE 3-1/2 core cable suitable for supplying supply power from LT panel to APFC Panel a of approved make including thimbles and compression gland complete in all respect. 120 sqmm (3-1/2 core) (NSI)

earthing symbol b) Oil level gauge indicating oil level at minimum, 30°C and maximum operating temperature; c) Air release device (for non-sealed type transformers) d) Rating and terminal marking plates; e) Silica gel breather f) Drain-cum-sampling valve (¾″ nominal size thread, IS 554) preferably steel with plug for three phase transformers; g) Thermometer pocket with cap; h) Oil filling holes having (1¼″ nominal size thread) with cover (for sealed type transformers without conservator); i) Lifting lugs for the complete transformer as well as for core and winding assembly; j) Pressure relief device or explosion vent above 200 kVA; k) One filter valve on the upper side of the tank (for transformers above 200 kVA); l) Unidirectional flat rollers (for transformers above 200 kVA); m) Inspection hole (for transformers above 200 kVA); n) HV side neutral grounding strip (where one of the HV bushing terminal is connected to earth); o) Buchholz relay for transformers above 800 kVA. p) Arcing horns or suitable rating lightning arrestors for HT side – 3 Nos. q) Bird guard; r) Oil temperature indicator and winding temperature indicators for transformers above 200 kVA with suitable tripping mechanism above permissible limit s) Jacking pads (for transformer above 1 600 kVA); t) Additional Neutral separately brought out on bushing for earthing. u) Magnetic oil level gauge (for transformer above 1600 kVA) with low oil level alarm contact; v) Non return valve (for conducting pressure test); w) Pressure relief device or explosion vent x). Monogram Plate y) Inspection cover z). Detachable type radiators with top and bottom shutoff valve. aa) Oil Conservator with Oil level indicator, minimum level marking and drain plug for all transformers of capacity 50 KVA and above. bb) Necessary hardware, clamps, lugs etc. for termination on HV/MV etc. for all transformers. (DSR No. 24.1 E&M).