SPECIAL REPAIRS TO HT SYSTEM BY REPLACING HT OVERHEAD LINES AND HT TWO POLE/FOUR POLE STRUCTURE WITH HT UG CABLES AND RMU AT FILTRATION PLANT AND CSD AREA AT INA EZHIMALA

Amount

Dismantling steel poles of any type complete all as specified and directed by Engineer-in-charge.

Taking down old unserviceable overhead ACSR conductor of any type complete all as specified and directed by Engineer-in-charge.

Taking down old unserviceable MS chanel, cross arm, clamp, and all accessoties complete all as specified and directed by Engineer-in-charge.

Taking down old unserviceable GI earth wire of any type from distribution span complete all as specifed and directed by Engineer-in-Charge.

Taking down old unserviceable insulator of any size complete all as specified and directed by Engineer-in-charge.

Dismantling of stay assembly complete all as specified and directed by Engineer-in-charge.

Dismantling gang operated Air break switch vertical/horizontal mounted triple pole mechanically operated for replacement complete all as specified and directed by Engineer-in-charge.

Taking down/out HT UG cable of size up to 300 sqmm including removing electrical connection and keeping side serviceable cable include removing cable protection cover etc complete all as specified and directed by Engineer-in-charge. Note: The unserviceable cable retrieved from taking down will become contractor's property and recovery will be made under schedule of credit.

Supply and laying XLPE insualted screened, PVC bedded galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor 11000 volts grade earthed cross sectional area 95 sqmm 3 core complete all as specified and directed by Engineer-in-charge .

M & L for relaying serviceable 11 kV HT UG cable of size up to 300 sqmm obtained from item No 08 here in before complete all as specified and directed by Engineer-in-charge.

Exacavation in trenches not exceeding 1.5 mtr in width and depth and getting out in hard and dense soil complete all as specified and directed by Engineer-in-charge.

Returing and filling including levelling watering and well ramming into layers not exceeding 25 cm in hard/dense soil complete all as specified and directed by Engineer-in-charge.

Removal of excavated soil to a distance not exceeding 50 mtrs and depositing at a level not exceeding 1.5 mtr from starting point complete all as specified and directed by Engineer-in-charge.

Supply and spreading riddled soil as earth cushioning to UG cable by using IS sieve to separate the composite particle/ roots etc. and refilling/ spread in trenches as cushioning and rammed down to form a solid bed complete all as specified and directed by Engineer-in-charge. Note :- Punned thickness only will be measured and paid. (ii) Excavated approved soil shall be riddled by using sieve to separate composite particles as per IS.

Supply and laying Un reinforced precast concrete cable cover class HV type 1 size 300 mm x 180 mm x 40 mm complete all as specifed and directed by Engneer-in-Charge. Note: Contractor has to produce PCC cable cover test certificate from the manufacturer.

Re-laying of cable cover obtained from taking down of HT cable in trenches complete all as specifed and directed by Engineer-in-Charge.

M&L for Supply, installation,Testing and commissioning of SF6 insulated outdoor type Ring main unit 11kV, 630A, 21kA for 3 sec. Motorized , Extensible type, 3 way module consisting of 1No Load break switch and 2 No Vaccum circuit breaker, each unit is made of a robotically welded sealed for life tank of thickness not less than 2.5mm filled with SF6, containing all high voltage components sealed off from the environment with Ingress protection IP67. (enclosure should meet sealed pressure system criterion in accordance with IEC 62271-200) - RMU with enclosure with Internal arc classification compiled to IEC 62271, Nominal voltage: 11 kV, Rated frequency: 50 Hz, copper busbars of 630 A rating, Rated copper current cable switch disconnector: 630 A, Rated current for transformer T-off: 200 / 630 A, The SF6 gas shall comply with IEC 376, 376A, and 376B. Short time withstand current: Cable switch disconnector with interface C(400-bolt) bushing: 21 kArms 3 sec., Vacuum circuit breaker with interface C (400-bolt) bushing: 21 kArms 3 sec. Impulse withstand voltage: To earth and between phases: 75 kV, Insulation level:- Power frequency 1 min: 28 kV, Temperature class:-25 °C - +40 °C outdoor, Degree of protection:- SF6 tank: IP 67, Fuse canisters: IP 67, Front cover: IP 2X, Cable cover: IP 3X, Enclosure IP54, Metal Enclosed switchgear: IEC 62271-200, General Purpose switches: IEC 60265-1, Disconnectors and Earthing switches: IEC 62271-102, Switch Fuse Combination: IEC 62271-105, Circuit Breakers: IEC 62271-100.

( Item No.17 Contd) - LBS module housed in SF6 Cubicle consisting: Cable switch 12kV, 630A -1No, Bushings outside cone interface C for connection of external busbars-1No, Manometer-1No, Snap action mech. for motor operation -1No, Control voltage, motor operation 24 V DC-1No, Cable cover standard with Interlocking-1No, Cable bushings interface C (400 bolted), 630 A, standard-1No, Short Circuit and Earth Fault Indicator-1No, Capacitive voltage indication fixed type VPIS 9-15 Kv -1No, Cable support bars, standard for 1-way unit-1No VCB module housed in SF6 Cubicle consisting: Vacuum circuit breaker 12kV, 630A, (Vaccum bottles are used as interrupters of the fault currents) -1No, Stored energy mech. for motor operation-1No, Control voltage, motor operation 24 V DC-1No, Cable cover standard with Interlocking-1No, Self-Powered Over Current and Earth Fault protection relay with RS485 port type ADR241S/CSDPR or equivalent-1No, Cable bushings interface C (400 bolted), 630A-1No, Aux. switch for vacuum circuit breaker position 2NO + 2NC-1No, Capacitive voltage indication fixed type VPIS 6-12 kV-1No, Cable support bars, standard for 1-way unit-1No, Ring core current transformer type 100/1 A, 2.5VA, 5P10 for Protection-3Nos complete all as specified and directed by Engr-in-charge. Note:-The cost of control cable and cost of Earthwork, foundation and plinth for installation of RMU shall be deemed included in the quoted rate. Design and dimention of concrete structure will be as per the manufacturer instruction and all as specified and directed by Engr-in-charge. MAKE: Seimens,Schneider, ABB, L&T.

M&L for supply, installation,testing and commissioning of SF6 insulated outdoor type Ring main unit 11kV, 630A, 21kA for 3 sec. Motorized, Extensible type, 4 way module consisting of 1 No Load break switch and 3 No Vaccum circuit breaker, Each unit is made of a robotically welded sealed for life tank of thickness not less than 2.5mm filled with SF6, containing all high voltage components sealed off from the environment with Ingress protection IP67. (enclosure should meet sealed pressure system criterion in accordance with IEC 62271-200) - RMU with enclosure with Internal arc classification compiled to IEC 62271, Nominal voltage: 11 kV, Rated frequency: 50 Hz, copper busbars of 630 A rating, Rated copper current cable switch disconnector: 630 A, Rated current for transformer T-off: 200 / 630 A, The SF6 gas shall comply with IEC 376, 376A, and 376B. The SF6 gas shall comply with IEC 376, 376A and 376B, Vacuum circuit breaker with interface C (400-bolt) bushing: 21 kArms 3 sec. Impulse withstand voltage: To earth and between phases: 75 kV, Insulation level: - Power frequency 1 min: 28 kV, Temperature class:-25 °C - +40 °C outdoor, Degree of protection:- SF6 tank: IP 67, Fuse canisters: IP 67, Front cover: IP 2X, Cable cover: IP 3X, Enclosure IP54, Metal Enclosed switchgear: IEC 62271-200, General Purpose switches: IEC 60265-1, Disconnectors and Earthing switches: IEC 62271-102, Switch Fuse Combination: IEC 62271-105, Circuit Breakers: IEC 62271-100.

( Item No.18 Contd) - LBS module housed in SF6 Cubicle consisting: Cable switch 12kV, 630A -1No, Bushings outside cone interface C for connection of external busbars-1No, Manometer-1No, Snap action mech. for motor operation -1No, Control voltage, motor operation 24 V DC-1No, Cable cover standard with Interlocking-1No, Cable bushings interface C (400 bolted), 630 A, standard-1No, Short Circuit and Earth Fault Indicator -1No, Capacitive voltage indication fixed type VPIS 9-15 Kv -1No, Aux. switch for load break switch position 2NO + 2NC -1No, Cable support bars, standard for 1-way unit-1No. VCB module housed in SF6 Cubicle consisting: Vacuum circuit breaker 12kV, 630A (Vaccum bottles are used as interrupters of the fault currents)-1No, Stored energy mech. for motor operation-1No, Control voltage, motor operation 24 V DC-1No, Cable cover standard with Interlocking-1No, Self-Powered Over Current and Earth Fault protection relay with RS485 port type ADR241S/CSDPR or equivalent-1No, Cable bushings interface C (400 bolted), 630A-1No, Aux. switch for vacuum circuit breaker position 2NO + 2NC-1No, Capacitive voltage indication fixed type VPIS 6-12 kV-1No, Cable support bars, standard for 1-way unit-1No, Ring core current transformer type 100/1 A, 2.5VA, 5P10 for Protection-3Nos. complete all as specified and directed by Engr-in-charge. Note:-The cost of control cable and cost of Earthwork, foundation and plinth for installation of RMU shall be deemed included in the quoted rate. Design and dimention of concrete structure will be as per the manufacturer instruction and all as specified and directed by Engr-in-charge. MAKE: Seimens,Schneider, ABB, L&T.

M & L for 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 95 sqmm complete all as specified and directed by Engineer -in-charge. Make:- 3M/ Raychem/ Mseal.

M & L for 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 95 sqmm complete all as specified and directed by Engineer -in-charge. Make:- 3M/ Raychem/ Mseal.

M & L for cable jointing straight through cable jointing kit HT 11 KV (Earthed) grade , straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE Armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed by Engineer -in-charge. Make:- 3M/ Raychem/ Mseal.

Material and labour for earthing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground (earth pit not less than 2.25 mtr below normal ground level) with top edge of the plate not less than 1.5 mtrs below normal GL, connected to and including galvanized earth lead Strip of size 32mm x 6mm upto 7.5 m distance and connected by means of bolts,nuts,checknuts and washers of galvanized iron or steel all as shown in electrical plate No.3 in SSR connected to earthing test point all as specified complete with excavation, earth work in any strata, charcoal, salt , pcc chamber,20mm thick RCC cover (grade M 15) complete having suitable handle (10mm MS Rod) , 20 mm dia medium grade GI pipe for watering with GI funnel & wire mesh and 40mm bore GI pipe light grade for protection of earth lead conductor with testing and connecting up complete all as specified and directed by engr-in-charge.

Supply and fix GI tubing light grade 80 mm nominal dia in trench/road/pole for cable protection complete all as specified and directed by Engineer-in-charge.

Supply and fix route indicator for marking of HT/ UG cable with cast iron round plate of 150 mm dia with cable direction arrow suitably fitted on iron and embeded with PCC block size of 25cm x 25cm x 30cm complete all as specified and directed by Engineer -in-charge.

M & L for Cutting the existing road/hard standing made of concrete or premix carpet, WBM, soling and moorum filling including excavating for laying the cable/pipe, width 0.25 Mtr and depth 0.5 mtr all as directed and making good with PCC (1:2:4) type 'B-1' as required at site to match with the existing surface complete all as specified and directed by Engineer -in-charge.

devan enterprises

LUCKY ENTERPRISES

M/S SRI BALAJI ENTERPRISES

ABM ELECTRICALS

UNIVERSAL ENGINEERING

M/s.Rejoy Constructions