CWE/FZR- /2022-23 PROVN OF RMUS AND CONNECTED ITEMS AT CHUNGI NO 1 L SUB STATION UNDER GE (EAST) FEROZEPUR CANTT

Amount

Design, Supply, Erection, Testing and Commissioning of 11kV 630A 4 Way Ring Main Units (2nos. Load Break Switch for incomer and 2nos. Vaccum Circuit Breaker for Outgoing), 21 KA for 1 sec, SF6 insulated, Manual , Outdoor, Non-extensible RMU , type tested in line with latest IEC standards. The RMU shall be suitable for operations at a height up to 1000 meters above sea level and at 50 degree ambient temperature without any derating. The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 at 0.3 bar (300 hPa) relative pressure. The RMU tank shall provide full insulation, making the switchgear insensitive to the environment with degrees of protection of IP67 . The switchgear operating mechanism shall have an IP2X protection and cable chamber shall have IP3X. The outer enclosure should be IP 54 type tested, should be powder coated with pure polyester based paint , suitable for the site installation conditions. Accidental overpressure due to an internal arc is limited by the opening of the safety valve, at the bottom of the metal enclosure, away from the operator. Plug in type of extensibility must be provided and coupling busbar should not be exposed to air to avoid oxidation of busbars. Extension of cubicle should only require 450mm to handle and the gap between the coupled RMU’s must be within 10mm.

11kV 630A 4 Way Ring Main Units (2nos. Load Break Switch for incomer and 2nos. Vaccum Circuit Breaker for Outgoing)

Each of the above Ring Main Unit shall comprise of the followings: A. Load Break Switch (LBS) each comprising of the following: (a) 11 KV, 630A, 21 KA Manual Load break switch; with built in line side manual earth switch. (b) Position indicator through clear front mimic in lin with IEC 62271-103 (c) Live cable indicator with indications (Voltage Presence Indicator) at the front and three inlets provision to check the synchronization of phases. (d) Cable box with termination bushing suitable for upto 2 RUN 3Cx300 Sq mm, XLPE cable. (e) Fault passage indicator (FPI) with in-built Overcurrent, Short Circuit and earth fault indication (in (N-1) LBS. The FPI should be self-powered and should have internal lithium battery for external indication and setting of FPI in the absence of current.

Note: LBS shall have 3 positions, open or disconnected, closed and earthed, and will be constructed in such a way that interlocking prevents unauthorized operations. Manual opening and closing will be driven by a fast-acting /snap action mechanism, independent of operator action. LBS and earth switch shall have a min of 1000 (M1) mechanical operations, 100 electrical operations at rated current and 5 nos operations ar rated SC current. Both the incomer Load Break Switch should be interlocked.

B. Vacuum circuit breaker (VCB) each comprising of the following: (a) 11 KV, 630A, 21 KA Manual VCB with spring assisted mechanism and series trip coil; with built in manual line side three position disconnector cum earth switch. (b) Position indicator through clear front mimic in lin with IEC 62271-103 (c) Self powered / auxiliary powered relay with O/C , S/C , E/F protection. Relay should have a front USB port for laptop interface , LCD display ,10 event records, 5 fault records, min 2 setting group and keypad for setting parameters for the relay. (d) Suitable ratio CT --/1 A, Class 5P10, 2.5VA for protection. (e) Live cable indicator with indications (Voltage Presence Indicator) at the front and three inlets provision to check the synchronization of phases. (f) Cable box with termination bushing suitable for upto 1 RUN 3Cx300 Sq mm, XLPE cable. Cable Boots suitable for cable size up to 1R*3C*300 sq.mm. cable Note: The circuit breakers shall have 2 positions: open or disconnected and closed. A separate and independent 3 position earthing switch and disconnector shall be fitted to open and earth the cables in such way that interlocks prevent all unauthorized operations.An operating mechanism can be used to manually close the circuit breaker and charge the mechanism in a single movement. An independent mechanism shall be fitted for the 3 positions earthing switch and disconnector Circuit breaker shall be fitted with a local system for manual tripping by an integrated push button. There will be no automatic reclosing. Circit breaker shall have a min of 2000 mechanical and electrical operations and 50 nos. dead Short Circuit operations. Disconnector and earthswitch shall have a min of 1000 (M1) mechanical operations , 100 electrical operations at rated current and 5 nos operations ar rated SC current.

Additional notes: (a) RMU degree of protection shall be IP54 for outer enclosure and IP67 for SF6 tank. (b) The make of vacuum interrupter should be of the same make as the Ring Main units. (c) An operator situated in front, lateral and rear (A-FLR 21kA – 1sec, downwards exhaust, for tank as well as cable compartment) of the RMU switchboard during an internal fault will not be exposed to the effects of arcing. Internal Arc Type Test Report for IAC AFLR 21 kA for 1 sec for both tank & cable box should have been for minimum 3 way / 3 Function RMU. (d) Ring Main Units shall be of ABB, Siemens and Schneider make only. (e) All operations shall be from front of the RMU, including access to cable bushings. Bushings along the sides or the rear of the RMU are not acceptable. (f) Bus Bar should be of Copper Loc - Near L Sub-Station

Supply, laying and testing cable XLPE insulated ,screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty), 11000 volts (E) grade with stranded aluminium conductor of 95 Sqmm 3 core size ,complete all as specified and as as directed by Engineer In Charge.

Supply & fixing Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 70 sqmm to 120sqmm, complete all as specified and as as directed by Engineer In Charge.

Supply & fix Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 70 sqmm to 120sqmm,complete all as specified and as as directed by Engineer In Charge. .

Supply & fixing galvanised iron pipe light grade ISI marked 100 mm bore for passing of cable, fixed to poles/ walls/ laid under floor complete with and including fittings complete all as specified and as directed by Engineer In Charge.

Supply, laying and testing cable XLPE insulated, armoured heavy duty electric cable with aluminium conductor,1100 volts grade, cross-sectional area 300 Sq.mm 3.5 core complete all as specified and as as directed by Engineer In Charge.

All as per item No 6 above but size 120 Sqmm 3.5 core.

All as per item No 6 above but size 95 Sqmm 3.5 core.

Supply, installation, testing and commissioning of CPRI approved, factory made, LT panel board cubical, Outdoor type, floor mounted double door, Front & Rear openable with locking arrangement, suitable for AC,3 phase, 4 wire, 50 cycles, 415 Volts. The panel board shall be made of 3.15 thick CRCA/MS sheet (Min size 2.0 m x 1.60 m x 0.8 m ) with Synthetic enamel Paint both side.

The panel have to provide proper compartment as per IS specification and wiring of panel with suitable size of copper conductor FRLS cable not less than 2.5 Sqmm with thimbles all as as directed

Base frame of the panel shall be made of angle iron of size 50 x50 x 6mm of upto 1/2 mtr hight from GL& 1/2 mtr for Below GL in PCC (1:3:6) type C-2 using 40 mm crushed Stone aggregates comprising of following:- Loc - L Substn

(i) Panel having common aluminium bus bar of capacity 1200 Amp TPN each and suitable capacity TPN bus bar for outgoing MCCB's,including aluminium lugs to connect the cable and cable gland for Each cable entry as per cable size.

(ii) Incoming:- (a) ACB 4 Pole, 415 V, Microprocessor release type (Manual Draw out type) of capacity 630 Amps.(Incoming) (iii) Outgoing:- (a) MCCB thermal released based with overload short circuit and earth fault protection and inbuilt earth release suitable size and capacity, 250 Amp 4 Pole ICU = ICS = 36 KA with overload variation 40-100% - 02 Nos.(outgoing) (b) Same as above but of Capacity 200 Amps, 4 Pole 36 KA -02 Nos.(outgoing)

Material and Labour for earthing complete with galvanized mild steel earth plate electrode size 600mm x 600mm x 6.3 mm thick buried directly in ground (Preferably in vertical position) earth pit not less than 2.25 metre below normal ground level with top edge of the earth plate not less 1.5 metre (BGL) connected to galvanized iron earth strip 32 x6 mm by means of bolts, nuts, check nut and washer of galvanized iron including PCC pit in RCC 1:2:4 type B-1, precast RCC cover with suitable handle, excavation and earth work in any type of soil, 50mm bore “medium grade” galvanized iron water tubing fixed with cast iron funnel and wire mesh and 50 mm bore “light grade” galvanized iron protection pipe for earth strip 32 x6 mm upto 5m length, charcoal, common salt, complete all as shown in EP No 1 of SSR 2009 Part-I, connected to test point complete, all as specified and testing on completion, complete all as specified and as as directed by Engineer In Charge. Note : GI earth strip 32 x6 mm more than 7.5 m will be measured and paid separately.

Material and Labour for Earthing complete with galvanized steel plate electrode of size 60 cm x 60cm x 6.3 mm thick buried directly in ground vertically to a depth not less than 2.5 mtr below the ground level with top edge of earth plate at a depth not less than 1.5 mtr below ground level. Earth plate surrounded by 15mm thick packed alternative layers of charcoal dust and comman salt, earth lead GI wire of 4mm dia (8 SWG) by means of bolts , nuts, check nuts and washers of galvanised iron with thimbles. The other end of GI earth wire is connected to main switch board and protected by light grade GI pipe of 15 mm bore. provision of 20mm bore light grade GI pipe for watering including GI funnel and wire mesh. Pipe shall be provided vertically upto top level of earth pit and then taken horizontally to the earth pit. Cement concrete chamber of PCC ( 1:3:6 ) type C-2using 40 mm graded crushed Stone aggregate

Material and Labour for plinth of transformer of size 2.1m x 2.1m x 1 m above ground including excavation work upto 0.76 m for foundation of wall , PCC 1:4:8 type D2 (using 40 mm graded crushed Stone aggregate) for foundation , brick work with sub class 'B' brick straight or curved on plan, exc 6 mtr mean radius built in cement mortar (1:4) , sand filling for foundation and hard core of broken bricks of gauge n exc 63 mm deposited, spread and levelled in layers n exc. 15 cm thick ,spread and filing in layers and cement concrete type C-2, 1:3:6 ,100 mm thick and Cement concrete type B-1, 1:2:4, 100 mm thick and Rendering 15 mm thick cement plaster in CM 1:4 on of brick/concrete work surfaces (finished even and smooth without using extra cement complete) complete all as specified and as directed.

Note : (i) Item rate also including Shifting of transformer from Existing location to new plinth properly.

Material and Labour for Lightening arrestor expulsion type for outdoor suitable for 11 KV high tension line complete with all fittings with discharge capacity 65 Kilo amperes, including bracket clamps, nuts, bolts & washers and connection to earth wire & SWG GI wire of 4mm size ,in replacement complete all as specified.

Material & Labour Switch air break gang operated out door type HT 11 KV triple poles 200 Amps air break fittings type with fixed contacts of phosphorus bronze and moving contacts of copper with mechanically operating from ground level vertical mounted complete with HT insulator on steel frame operating rod made out of 25mm GI pipe medium grade worked from ground level with handle and locking arrangement with 12 insulators with drop out expulsion type fuse of capacity including painting steel surfaces with two coats of aluminium paint over a coat of red oxide primer and making connection complete all as specified and as as directed by Engineer In Charge. Note :- 1. Original test certificate of manufacturer shell be produced , without which no payment shell be made. 2. Clamps , Cross arms shall be measured and paid for separatly

Supply & fixing Cross arms, bracings, stiffeners, supporting clamps and back plates, fabricated from structural steel sections, drilling holes for bolts, in any shape or size as indicated or as directed and including necessary welding, bending cold or hot inclusive of nuts, bolts, washers and two coats of aluminium paint over a coat of aluminium primer including preparation of surfaces, complete all as specified.

Material and Labour for Danger notice plate of 1.6mm thick mild steel sheet, vitreous 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 for HT, 25x20cm size complete all as specified and as as directed Engineer In Charge.

Dismantling and taking down old worn out ACSR conductor of any type and size complete all as specified and as directed.

Dismantling & taking down old worn out MS clamps/cross arms/channels complete with nuts & bolts etc complete all as specified and as as directed Engineer In Charge.

Dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism for repair/replacement of broken/worn out components, insulators and lightening arrestor etc.

Dismantling insulators any type, any size complete all as specified and as as directed Engineer In Charge.

Dismantling PCC poles/ struts, any size complete all as specified and as as directed Engineer In Charge.

Dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism for repair/replacement of broken/worn out components, insulators and lightening arrestor etc complete all as specified and as as directed Engineer In Charge.

Excavation in trenches in soft/loose soil not exceeding 1.5 meter wide and not exceeding 1.5 meter deep for laying of cable, pole foundation, etc including taking out old brick cable protection cover and getting out forming bottom surface to required gradient complete all as specified and as as directed Engineer In Charge.

Returning, filling in, earth including spreading, leveling watering and well ramming in layers each not exceeding 25cm thick each layer,complete all as specified and as as directed Engineer In Charge.

Removal of surplus soil to a distance not exc. 50 meter and depositing where as directed at a level not exc. 1.5 meter above the starting point complete all as specified and as as directed Engineer In Charge.

Material and labour Precast reinforced cement concrete cable cover factory made class HV, type-I, flat, size 300mm x 180mm x 40mm for HT cable ISI marked, laid flat across the cable, complete all as specified and as as directed Engineer In Charge.

Material and Labour for Sand cushioning to under ground cable in trenches/existing cable trenches/ducts in layers of 8 cm deep before laying the cable and 15 cm deep after laying and stretching the cable complete all as specified and as as directed Engineer In Charge. Note :- Punned down thickness as laid down in SSR Part-I shall be measured and paid.

Material and Labour for Bricks; common burnt clay building bricks, sub-class ‘B’ designation 75 laid dry width wise acrose the line of cable in trenches for protection of UG cable complete all as specified and as as directed Engineer In Charge.

Supply & fixing RCC HT cable route indicator of size 75CMx40CM x10CM duly marked with HT cable made of Cement concreted (1:2:4) type B-1 as in foundation of electric poles/struts/ etc including necessary form work, fair finished embedded in PCC bed incl necessary excavation and re-filling complete all as specified and as as directed Engineer In Charge.

Material and Labour for plinth of RMU Unit of size 3.25 mtr x2.5 mtr x1.0 mtr including excavation work , PCC 1:4:8 type D2 (using 40 mm graded stone aggreate) for foundation , Brick work with sub class 'B' bricks and rendering of 15 mm thick cement plaster on of brick / concrete work , Soil/sand filling for foundation and hard core of brroken bricks of gauge n exc 63 mm depsited ,spread and fiiling in layers and cement conerete type C-2, 1:3:6 ,150 mm thick and Cement concrete type B-1, 1:2:4, (using 20mm graded crushed crushed Stone aggregate)150 mm thick complete all as specified and as as directed Engineer In Charge.

Supply & levelling Graded coarse aggregate of nominal size 40 mm complete all as specified and as as directed Engineer In Charge.

Supply and fixing HT Pre-stressed concrete pole 11.0 metres long of cross section 152 mm x 152 mm at top and 152 mm x 260 mm at bottom class 9 complying with requirement of IS 1678-1978 incl painting of poles with two coats of synthetic enamel paint/over a coat of primer in black and yellow strips upto 1.5 mtr height from top of PCC as as directed (PCC and earth work shall be measured and paid separately). complete all as specified and as as directed Engineer In Charge.

Material and Labour for cement concreted (1:4:8) type D-2 using 40 mm graded crushed Stone aggregate as in foundation of poles filling and mass concreting complete all as specified and as as directed Engineer In Charge..

Material and labour for cement concreted (1:3:6) type C-2 using 40 mm graded crushed crushed Stone aggregate in foundation of pole/ stay assembly/feeder pillar box/LT panel,etc, incl necessary form work and fair finsh to exposed surfaces without using extra cement etc complete all as specified.

Material and Labour for Cement concreted (1:2:4) type B-1 using 20 mm graded crushed Stone aggregate as in foundation of electric poles/struts/ etc including necessary form work, fair finished surfaces without using extra cement complete all as specified and as as directed Engineer In Charge.

Excavation in trenches exc 1.5m wide and exc 1.5m deep for foundation of poles/stays/cable etc and getting out in soft /loose soil complete all as specified and as directed by Engineer-in-Charge.

Material and Labour for Aluminium conductor, steel reinforced (ACSR) of different sizes incl jointing and stritching for over head lines on HT / LT poles including binding, jumpers, line taps etc complete all as specified .

Material and Labour for Disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown or green Single disc assembly for tension with tension clamps for conductors, working pressure 11000 complete all as specified and as directed by Engineer-In- Charge

Excavating in post holes (or similer holes) each n exc 0.5 cum getting out,returning filling in and raming earth or broken rubble mixed with earth around,in layers not exceeding 25 cm watering and removing surplus soil to a distance n exc 50m and making good surface, complete all as specified and as directed by Engineer-In- Charge.

Material and Labour for for cement concrete type C-2 1:3:6 using 40mm graded stone aggergate as in foundations filling and mass concrete , complete all as specified and as directed by Engineer-In- Charge.

Material and Labour for formwork to sides of concrete foundations, footings, bases of columns and plinth beams and similar work, complete all as specified and as directed by Engineer in charge.

Material and Labour for for cement concretetype C-1 1:3:6 using 20mm graded crushed stone aggergate in lintels upto 1..5 m clear span, cills, steps; seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, kerbs water troughs and the like including weathering, slightly rouinded for chamfered angles and throating, complete all as specified and as as directed Engineer In Charge.

Supply & fixing Mild steel work as in posts or struts in fencing including cutting tops to shape as as directed, drilling holes, notching for wire etc flat iron fillets (for securing wire mesh etc) including all necessary bolting or riveting etc and similar work confirming to Fe-290 Gde E-165, complete all as specified and as directed by Engineer-In- Charge.

Supply & fixing Tie bars with screwed ends, nuts, washers and mild steel paltes for walls, chimneys, roofs, arches, etc. king rods and straining bolts conforming to Fe 410-0 or Fe 310-0, complete all as specified and as directed by Engineer-In- Charge.

Supply & fixing Mild steel screw bolts (machine made) with hexagonal or square heads at one end and screwed the other, or screwed both ends, each screwed end to be fitted with washers and one hexagonal or square nut, exc 5cm but n exc 10 cm long diameter of the neck in 5 mm to 10 mm.

Supply & fixing Mild steel Round bars 10mm dia and over,cut to length, bent to shape required,complete all as specified and as directed by Engineer-In- Charge.

Supply & fixing GI chain link fencing 100 mm diagonal mesh size of 2-3 mm dia wire fixed angle iron fencing post including prov. of binding wire complete all as specified and as directed by Engineer-In- Charge.

Supply & fixing in repair Galvanised, 2 strand, steel barbed wire 2.24mm dia barbed with 2mm dia barbs at 75mm spacings and straining and fixing to any type of standard rails strainging bolts, including, securing or tying at crossings with and provision of galvanised mild steel wire, staples or stel pins, etc.complete all as specified and as directed by Engineer-In- Charge. (each line wire to be measured)

Material and Labour for rendering 15mm thick in cement mortar (1:4) on any face of brick walls or concrete surfaces, finished even and fair complete all as specified and as directed by Engineer-In- Charge.

Preparation of new plastered surfaces and applying two coats of white wash complete all as specified and as directed by Engineer-In- Charge.

Material and Labour for fine sand bed under paver block ,complete all as specified and as directed by Engineer-In- Charge.

Material and Labour for machine pressed precast concrete interlocking block any shape and size confirming to IS-15658-2006 of 60mm thickness, M-35 grade including laying of sand cushioning , etc, complete all as specified and as directed by Engineer-In- Charge. Note :- Sand will be measured and paid separetely.

Material and Labour for PCC 75mm thick, type D-2 1:4:8 ( 40mm graded crushed stone aggregate) complete all as specified and as directed by Engineer-In- Charge.

Preparation of new steel surfaces of any description, over 10cm width or girth and applying two coats of synthetic enamel paint over primed steel surfacescomplete all as specified and as directed by Engineer-In- Charge.

Material and Labour for for Hardcore of broken stone of gauge n exc. 63 mm, deposited, spread and levelled in layers n exc. 15 cm thick, watered and rammed to a true surface as in surface of 11 KV Sub station , around 4 pole / 2 Pole structure complete all as specified and as directed by Engineer-In- Charge.

Karan Engineers