PROVN OF 11 KV RING MAIN SYSTEM WITH 3 NOS RMU AND ALLIED WORKS AT FAIZABAD.

Amount

Supply, installation, testing and commissioning of 11 KV, 630 Amps, Extendible Outdoor Fixed Type (IP54), RMU (Ring main unit) VVV-M module comprising of 3 No. 630 Amps Vacuum Circuit Breaker with short time withstand current 21 kA (rms) for 3 seconds, Impulse with stand voltage between phases - 75 kV, Insulation level-28 kV for 1 minute at Power frequency (One No. as incoming 2 Nos as outgoing) and 1 No metering Module, with stainless steel enclosure as per IS 632 having min, thickness 3 mm provided with Copper busbars including the following with all necessary standard fitting as required at site :- (a) 3 Nos. 630 Amp motorised Vacuum Circuit Breaker (12 kV grade) each equipped with (i) SF6 tank IP 67 (ii) Manometer (iii) Stored energy type spring charged motor operation with 24 V DC (iv) Self powered Over current and earth fauit protection relay with RS 485 port (v) Digital multifunction meter (A, V, kW, kVA, kWh, PF, F etc) (vi) Capacitive voltage indication type VPIS 9-15 kV (vii) Cable bushing interface (viii) Aux switch for VCB position 2 NO + 2 NC (ix) Aux switch for disconnected position 2 NO + 2 NC (x) Aux switch for earth position 2 NO + 2 NC (xi) Cable support bars standard (xii) Ring core Current transformer 100-50/1A, 2.5 VA burden, 5P10 protection class (xiii) Ring core current transformer 100 50/1A, 2.5 VA burden class 1.0 for metering (xiv) Standard cable cover (IP 34) (xv) Suitable bottom entry front termination of 3 core cable 95 Sqmm.

(b) 1 No Air insulated metering module 630 Amp, 12 KV grade with (i) Bushings outside cone interface for connection of external busbar (ii) Potential transformer with primary voltage 11000 : V3V and secondary voltage 110 : V3V with burden 50 VA, No of metering windings-1 (iii) 2 x 12 V DC battery (iv) Battery Charger for 2 x 12 V DC Battery (v) Operating Handle (vi) 230 volt connection to the battery charger with 2 core 10 Sqmm XLPE insulated GI strip armoured LT UG cable form nearest point of supply upto 50 mtr. (c) Safety interlocks shall be provided as per relevant IEC/IS standards and manufacturers standard design of manufacturers. (d) Above switchgear shall confirm to all relevant IEC/IS standards.. (e) PCC 1:2:4 type B1 using 20mm graded aggregate for foundation of RMU as per recommendations of manufacturers. [Note :- Any other parts/items not specified above but essential for smooth and safe functioning of the RMU system shall be included in the items and are covered against the quoted rates].

Excavation in trenches n.exc. 1.5 mtr wide and n.exc. 1.5 mtr in depth for laying / taking out water supply pipe line in soft/loose soil, taking out excavated material,forming bottom etc complete all as specified and directed.

Returning filling in foundation/ trenches including spreading leveling , watering and well ramming in layers not exceeding 25 cm thick in soil complete all as specified and directed.

Removal of surplus excavated soil to a distance n.exc. 50mtr and depositing where directed at a level n.exc. 1.5 mtr above starting point complete all as specified and directed.

M&L for sand cushioning in trenches for protection of under ground cable provided in layers of sand 8cm deep before laying the cable and 15cm deep after the cable (Punned down to 18 cm) complete all as specified and directed. (Note:- Punned thickness as 18 cm shall be measured and paid)

Supply and laying Un-reinforced precast concrete cable cover 'factory made' of class HPV, Type 1 flat of size 300 mm x 180 mm x 40 mm complete all as specified and directed by Engr-in-Charge.

Horizontal boring in soft/loose soil/under roads of any width by manual arrangements for inserting GI pipe up to 100mm bore for passing cables complete all as specified and directed by Engr-in-Charge. Note : GI pipe shall be measured and paid separately.

M&L for earthing complete with galvanised steel earth plate electrode 600x600x6 mm thick buried directly in ground (earth pit not less than 2.25m deep below GL with top edge of plate not less than 1.50 m below normal ground level) connected to galavanised earth lead strip 32mm x 6 mm (7.5m) as means of bolts, nuts, check nuts and washer besides brazing at all joints as shown on drawings and including excavation, earth work, GI pipe (ISI mark) light grade 40mm bore for protection of GI strip from earth electrode to and including the earth test point, supplying and laying charcoal dust, common salt, PCC 1:3:6, type C-1(using 20 mm graded crushed stone aggregate ) chamber and mild steel angle iron frame 40 x 40 x 3 mm and 40 mm thick pre-cast RCC cover 1:2:4 , type B-1(using 20 mm graded crushed stone aggregate ) reinforced with 8 mm dia TMT bars @ 75 mm C/C both ways with mild steel handle 12 mm dia, PGI funnel and wire mesh, 20 mm dia GI pipe light grade(ISI marked) for watering all as shown in electrical plate No 3 of SSR Part-I and connected to earth test point including testing complete all as specified and directed. (Note:- The rates quoted shall also deemed to include the cost of Earth test point and earth strip and protection pipe upto 7.5 meter beyond the earth plates electrode)

Earth continuity conductor or main earthing lead fixed to walls or to poles or any other indicated situation for loop earthing with 32mm x6mm galvanised iron strip complete all as specified and as directed by Engr-in-Charge.

Laying only, commissioning & testing HT underground 95 Sqmm 3 core cable 11 KV grade (E), XLPE insulated, PVC sheathed heavy duty, armoured with multi stranded aluminium conductor all as per IS 7098 (Part-I) 1998, laid in trenches, ducts, pipes or on poles, etc all as specified and directed by Engr-in-Charge. Note :- HT cable will be issued under Sch 'B' as free for fixing.

S&F of Cable termination cold shrinkable jointing kit for 11 KV straight through type suitable for HT cable XLPE insulated aluminium conductor of size 95 Sqmm 3 core complete all as specified and directed by Engr-in-Charge.

Supply & fix cable jointing kit for 11 KV(E) grade cable for Outdoor termination cold shrink type joint complete with jointing material and accessories for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm all as specified and directed by Engr-in-Charge.

M&L for mild steel work with angle iron, channel etc as in post and struts in fencing including cutting tops to shape, as directed, drilling holes, notching for wire etc flat iron fillets (for securing wire mess etc) including all necessary drilling, bolting or rivetting etc complete all as specified and directed.

M&L for chain link fencing galvanised including line wires 4 mm dia, mesh size 150x100mm weight not less than 2.3 Kg/sqm and type of standards rails, straining bolts etc. Including provision of binding wire and fixing complete all as specified and directed.

Supply & laying steel tubing, galvanized light grade 80 mm bores, for passing GI strip/Control cable under road or PCC floor or fixed on wall/on pole or drain etc or whenever protection is required including necessary clamps and nut bolts with GI fitting complete all as specified and directed by Engr-In-Charge and specified directed.

ANKIT SHIP REPAIRERS AND SUPPLIERS

M/S MALHOTRA ENGINEERING WORKS

Hindustan Power Corporation

Khan Brothers