REPAIRS MAINT TO DRY TYPE TRANSFORMER OCB VCB AND CONNECTED ITEMS AT VARIOUS JETTIES FOR SHORE SUPPLY AT NAVAL DOCKYARD UNDER GE NW KUNJALI COLABA MUMBAI

Amount

Supplying , laying, Jointing testing and commissioning of HT UG cable, XLPE insulated, screened insulated,armoured and PVC bedded, 11000 volts grade (heavy duty) suitable for earthed system with aluminium conductor of size 3 core 95 sq.mm conforming to IS-7098 Part II laid in trenches, fixed to walls or passing through pipes and connecting up including taking out unserviceable cable complete all as specified and directed by Engr-in-charge

Supplying , laying, Jointing testing and commissioning of HT UG cable, XLPE insulated, screened insulated,armoured and PVC bedded, 11000 volts grade (heavy duty) suitable for earthed system with aluminium conductor of size 3 core 185 sq.mm conforming to IS-7098 Part II laid in trenches, fixed to walls or passing through pipes and connecting up including taking out unserviceable cable complete all as specified and directed by Engr-in-charge

Material and Labour for cable End Termination Box, HEAT shrinkable, Indoor type suitable for 6.6-11KV, 50 to 95 sq.mm XLPE, 3 core power cable with aluminium conductor including dismantling old cable end termination of any description complete all as specified and directed by Engr-in-charge

Material and Labour for cable End Termination Box, HEAT shrinkable, Indoor type suitable for 6.6-11KV, 120 to 185 sq.mm XLPE, 3 core power cable with aluminium conductor including dismantling old cable end termination of any description complete all as specified and directed by Engr-in-charge.

Material and Labour for cable End Termination Box, HEAT shrinkable, outdoor type suitable for 6.6-11KV, 50 to 95 sq.mm XLPE, 3 core power cable with aluminium conductor including dismantling old cable end termination of any description complete all as specified and directed by Engr-in-charge

Material and Labour for cable End Termination Box, HEAT shrinkable, Outdoor type suitable for 6.6-11KV, 120 to 185 sq.mm XLPE, 3 core power cable with aluminium conductor including dismantling old cable end termination of any description complete all as specified and directed by Engr-in-charge

Material and Labour for straight through joint , HEAT shrinkable, Outdoor type suitable for 6.6-11KV, 50 to 95 sq.mm XLPE, 3 core power cable with aluminium conductor including dismantling old cable end termination of any description complete all as specified and directed by Engr-in-charge

Material and Labour for straight through joint , HEAT shrinkable, Outdoor type suitable for 6.6-11KV, 120 to 185 sq.mm XLPE, 3 core power cable with aluminium conductor including dismantling old cable end termination of any description complete all as specified and directed by Engr-in-charge

Material and labour for replacing of transformer for complete all as specified and directed (i) Disconnecting the HT/LT side and earthing connections of the transformer (ii) Lifting transformer with the help of crane, loading on suitable vehicle to transport it to the workshop at and Unloading at workshop for servicing (a) Receiving & unloading the transformer, (b) Draining oil/water (c) Opening of top cover (d) Disconnecting OLTC/LV connections (e) Un tanking of core coil assembly (f) Inspection of core coil assembly, OLTC, tank paint, marshalling box (g) Dismantling of core coil assembly (h) Reassembly of core after cleaning and baking all laminations. (j) Rayon taping of the core (k) Repainting of core channels (l) Making fresh coils of HV & LV windings with new copper & new insulation (m) Blanking OLTC cutout (n) Cleaning tank & radiator externally & internally by sand blasting (o) Applying epoxy primer and two coats of epoxy paint on the external surface and oil resistant paint on the internal surface of the tank & radiator. (p) Windings to be done with new copper conductors of core and phase. All other insulation material used will be new one. (q) Assembling core coil (r) Insulation material (s) Making HV/LV connections (t) Pretest ingcore coil assembly (u) Off circuit tap switch (v) Bake core coil assembly in the oven

(w) Tanking of core coil assembly, fitting of radiator valves, off circuit switch, radiator, top cover, Buchalez relay, HV/LV bushings, explosion vent diaphragm, breather (x) Replacing HV bushings & metal parts (y) Replacing all the gaskets with new ones of RC 70 grade (z) Hardware (aa) Oil filling through filter machine (ab) Fitting and wiring of marshalling box with WTI, OTI, MOG. (ac) Final testing as per IS 2026 (routine tests)(iii) Transporting transformer back to the site , Lifting it down with the help of crane and reconnecting the HT/LT cable and earthing connections complete all as directed and of followings capacities:631 to 999 kVA, 6.6-11KV/433V Note for item no 9 :- (i) In case of damage during transporting / loading/unloading at any stage after recipt of transformer from Dept, the contracor shall be repsonsible for damage and it shall be made good by him at his own expense.the decision of Engineer in charge in the regards shall be fixed & biding. (ii) Transformer oil required for filling shall be measured and paid seperately (iii) All other spares required shall be measured and paid sperately (iv) Rates are inclusive of testing of earthing before connection of transformer.

Material and labour for the following complete all as specified and directed by the Engr-in-charge (a) Disconnecting the HT/LT side and earthing connections of the transformer (b) Lifting transformer with the help of crane, loading on suitable vech to transport it to the workshop at and Unloading at workshop for servicing (c) Details of the transformer to be repaired: make dry type cast resin distribution transformer. (i) Rated kVA: 2500 (ii) Voltage ratio: 11kV-6.6kV / 410V (iii) Phase / Frequency: 3 / 50 Hz. (iv) Vector group: Dyn11 (v) Cooling: AN (vi) Class: H (d) Scope of work: (i) Unloading of transformer at our works from site or one factory as directed by Engineeer in charge. (ii) Removing transformer from enclosure and primary testing with user rep

(e) Dismantling transformer core coil assembly to acquire physical data of all the parameters and dimensional details. (f) To open one of the coils for procuring the electrical data. (g) Cleaning of the existing core and banding it with rayon tapes. (h) Order new insulating material, copper etc. to make new coils and casting of the same. Windings to be done with new copper conductors. All other insulation material used will be new one. (j) Core and coil assembly LV side. (k) Core and coil assembly HV side. (l) Termination of HV & LV leads with tap changer connections. (m) Fitting of the transformer into the enclosure and new gasket as per IS (o) Final testing as per IS 11171 OR IEC 60076 (routine testing only) in your presence. (p) Dispatchof work

Notes: (i) All insulation used into winding will be new, non-hygroscopic and non-flammable. (ii) In all three coils, the primary & secondary windings both will be replaced with new ones. (iii) In case of damage during tpt/ loading/unloading at any stage after recipt of transformer from Dept, the contracor shall be repsonsible for damage and it shall be made good by him at his own expense. the decision of Engineer in charge in the regards shall be fixed & biding. (iv) Transformer oil required for filling shall be measured and paid seperately (v) All other spares required shall be measured and paid sperately (vi) Rates are inclusive of testing of earthing before connection of transformer

Material and labour for the following complete all as specified and directed by the Engr-in-charge (i) Disconnecting the HT/LT side and earthing connections of the transformer, (ii) Lifting transformer with the help of crane, loading on suitable vech to transport it to the workshop at and Unloading at workshop for servicing (a) Details of the transformer to be repaired: (i) Make & type: Kirloskar make dry type cast resin distribution transformer. (ii) Rated kVA: 1000/1600 (iii) Voltage ratio: 11kV-6.6kV / 410V (iv) Phase / Frequency: 3 / 50 Hz. (v) Vector group: Dyn11 (vi) Cooling: AN (vii) Class: H (b) Scope of work:(a). Unloading of transformer at our works from site or one factory as directed by Engineeer in charge. (c). Removing transformer from enclosure and primary testing with user rep

(d). Dismantling transformer core coil assembly to acquire physical data of all the parameters and dimensional details. (e). To open one of the coils for procuring the electrical data. (f). Cleaning of the existing core and banding it with rayon tapes. (g) Order new insulating material, copper etc. to make new coils and casting of the same. Windings to be done with new copper conductors. All other insulation material used will be new one. (f). Core and coil assembly LV side. Core and coil assembly HV side. (g) Termination of HV & LV leads with tap changer connections. (h) Fitting of the transformer into the enclosure and new gasket as per IS (j) Final testing as per IS 11171 OR IEC 60076 (routine testing only) in your presence. (k) Dispatch of work

Notes: (i). All insulation used into winding will be new, non-hygroscopic and non-flammable. (ii) In all three coils, the primary & secondary windings both will be replaced with new ones. (iii) In case of damage during tpt/ loading/unloading at any stage after recipt of transformer from Dept, the contracor shall be repsonsible for damage and it shall be made good by him at his own expense.the decision of Engineer in charge in the regards shall be fixed & biding. (iv) Transformer oil required for filling shall be measured and paid seperately (v) All other spares required shall be measured and paid sperately (vi) Rates are inclusive of testing of earthing before connection of transformer

Material and labour for for shifting transformer upto 2500 kVA, 6.6-11KV/433V, from location inside Dockyard and connecting HT/LT side to provide temporary supply during repair of transformer and disconnecting HT/LT connections before installations of repaired transformer location within Naval Dockyard complete all as specified and directed by Engr-in- charge

Material and labour for in repairs HV side Brass studs threaded both ends of suitable size and length including metal and rubber rings,. Bolts washer, etc. suitable for 500 to 1600 KVA Transformer ( Indoor or Outdoor type), 6.6-11KV/433V, step down/ step up of any make / model complete all as specified and directed by Engr-in- charge

Material and labour for in repairs HV side Brass studs threaded both ends of suitable size and length including metal and rubber rings,. Bolts washer, etc. suitable for above1600 KVa Transformer ( Indoor or Outdoor type), 6.6-11KV/433V, step down/ step up of any make / model complete all as specified and directed by Engr-in- charge

Material and labour forin repairs LV side Brass studs threaded both ends of suitable size and length including metal and rubber rings,. Bolts washer, etc. suitable for 500 to 1600 KVA Transformer ( Indoor or Outdoor type), 6.6-11KV/433V, step down/ step up, of any make / model complete all as specified and directed by Engr-in- charge

Material and labour for in repairs LV side Brass studs threaded both ends of suitable size and length including metal and rubber rings, Bolts washer, etc. suitable for above1600 KVA to 2500 KVa Transformer and above Outdoor type, 6.6-11KV/ 433V step down/ step up ) of any make / model complete all as specified and directed by Engr-in- charge

Supply and fixing in repairs HV/LV side Porcelain Bushing / Insulator of suitable size suitable upto 2500KVA Transformer, Outdoor type, 6.6- 11KV/ 433V , step down/step up, of any make / model complete all as specified and directed by Engr-in- charge

Supply and fixing in repairs HV/LV side Porcelain Bushing / Insulator of suitable size suitable for above 500KVA Transformer, Outdoor type, 6.6- 11KV/ 433V , step down/step up, of any make / model complete all as specified and directed by Engr-in- charge

Supply and fixing in repairs Silica Gel container with first fill of Silica Gel transparent type suitable for transformer of capacity 500 KVA to 1250 KVA complete all as specified and directed by Engr-in- charge

Supply and fixing in repairs Silica Gel container with first fill of Silica Gel transparent type suitable for transformer of capacity above 1250 kVA to 2500 kVA complete all as specified and directed by Engr-in- charge

Supply & providing of Transformer protection relay for 1000 kva to 2500KVA transformer.including supply and erection of accessories such as control wires,lugs,ferruls,fabricating box of TPR,connector etc complete all as specified and directed by Engr-in- charge

Supply and erection of limit switches for transformer capacity from 1000 to 2500 kVA complete all as specified and directed by Engr-in- charge

Supply and erection of single phase blowers for transformer capacity from 1000 to 2500 kVA complete all as specified and directed by Engr-in- charge

Supply and erection of heaters for transformer capacity from 1000 to 2500 kVA complete all as specified and directed by Engr-in- charge

Testing of di-electric strength of transformer oil of transformer indoor/outdoor type,6.6KV/433 Volts,before filteration and to remove moisture and impurities and to improve di-electric strength above 48 KV /minute through filtration plant including filling of new transformer oil for topping up, testing complete all as specified. Filtration of transformer oil by electrically operated transformer oil filtration plant to achive a test result of 48 KV/min for distribution transformer and 80 KV/ minute for power transformer for 2.5 mm gap complete all as specified and directed by Engr-in- charge ( Note: Testing machine and Transformer oil filtration plant as well as dehydration facility will provided by the contractor) i) New transformer oil shall be measured and paid separatelly under respective items).

Supply only Transformer Oil as per IS 335/93 dehydrated to give BDV value not less than 50 KV when tested with 2.5mm gap electrode complete all as specified and directed by Engr-in- charge

Supply only Silica Gel in air tight container suitable for Dehydrating Breathers of Transformers complete all as specified and directed by Engr-in- charge

aterial and Labour for replacement of the following for 500 kVA to 2500 kVA,6.6/6.6-11KV/ 433V transformer complete all as specified and directed by Engr-in- charge:-

Oil level indicator

Tap changer

Dial type 100mm dia oil temp meter

Air release plug assembly

Drain plug

Gun metal oil drain valve 25mm /40mm

Material and labour for spraying painting to Indoor/Outdoor type, Step up/ step down/ step up Transformer 6.6/6.6-11KV/ 433 V installed at different locations of ND area after scraping thoroughly the existing corroded paint / rust, filling of cavities and applying one coat of silicon acrylic heat resistant paint of approved quality of approved colour and writing the details such as, SM/MES No. etc. complete all as specified and directed by Engr-in- chargeall as specified for following capacity.

631 to 1000KVA

1001 to 1600KVa

1601 to 2500KVa

Material and labour for PCC 1:4:8 Type D2 using 40 mm graded crushed stone aggregate in foundation including form work and finishing the exposed surface of concrete even and smooth complete all as specified and directed by Engr-in- charge

Material and labour for PCC 1:3:6 Type C2 using 40 mm graded crushed stone aggregate as in foundation, filling and mass concrete complete all as specified and directed by Engr-in- charge

Supply , fixing, testing in repairs of JEF ECO SAFE Maintenance Free Grounding Solution set comprising of High tensile low carbon steel rod of 3 Mts length & 25 mm dia with 250 micron ( averaSchneider ) molecularly bonded copper on the outer surface to confirm with requirements of UL467 along with Back-fill compound strictly be a Carbon based conductive concrete type which has a resistivity of less than 0.12 Ohm Mtr as per Clause 14.5D of IEEE : 80 standard. Back-fill compound should be electronically conductive ( Like in metals ) and should not depend on moisture for conduction. JEF Powerfill Loresco compound shall be supplied in 50 Pound Bag. ( 1 Bag of 50 Pounds required per earthing set). Back-fill comound should be environment friendly, should solidify when mixed with water and set like concrete and should not leach / diffuse into the ground. A suitable earth terminaton clamp should also be supplied along with the set alongwith earth pit weatherproofcomplete all as specified and directed by Engr-in- charge Note : Back-fill compund shall not be mixed with any soil while pouring in the bore hole.

Supply of JEF ECO SAFE Maintenance Free Grounding Solution set comprising of High tensile low carbon steel rod of 3 Mts length & 32 mm dia with 250 micron ( average ) molecularly bonded copper on the outer surface to confirm with requirements of UL467 along with Back-fill compound strictly be a Carbon based conductive concrete type which has a resistivity of less than 0.12 Ohm Mtr as per Clause 14.5D of IEEE : 80 standard. Back-fill compound should be electronically conductive ( Like in metals ) and should not depend on moisture for conduction. JEF ECO SAFE compound shall be supplied in 50 Pound Bag. ( 1 Bag required per earthing set). Back-fill comound should be environment friendly, should solidify when mixed with water and set like concrete and should not leach / diffuse into the ground. A suitable earth terminaton clamp should also be supplied complete all as specified and directed by Engr-in- charge Note : Back-fill compund shall not be mixed with any soil while pouring in the bore hole.

Material and labour galvanised pipe including fittings, light grade fixed to poles, on walls laid under road in trenches for protection of underground cable all as specified of 100mm dia complete all as specified and directed by Engr-in- charge

Provision of cutting bituminous road at a width not more than 30cm and a depth not exceeding 60 cm for laying of pipes on road crossing for cable protection and making good with the existing surfaces with 1:3:6 PCC, complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in repair LED lamps of existing LT panel board and supply and fixing new LED Lamp including making necessary electrical connection all as specified and directed by Engineer-in-Charge.

Supply and fixing cost effective, durable and reliable 6.6-11 kV heat shrinkable anti tracking bus bar tubing sleeve of dia 50mm, for Bus bar of VCB's, flame retardent and protetcion against moisture,dust including all accessries all as specified and as directed.of make Jointmask 1133 series or as approved by GE

Supply and fixing in repairs 11/6.6 KV Potenial transformer (PT's) as per existing size and make suitable for HT VCB panel incuding taking down old unserviceable PTs complete all as directed at site by Engineer in chrage.

Supply and fixing in repairs 11/6.6 KV Spout as incomer [RYB] one set and outgoing [RYB] one set as per existing size and make suitable for HT VCB panel incuding taking down old unserviceable Spout set complete all as directed at site by Engineer in chrage.

Chakshu Enterprise

Nexus Infratech

AGRAWAL ASSOCIATES

Shree Ayyappa Engineering