Military Engineer Services-MES has published Repairs Maintenance Of Distribution Transfomers And Connected Items At Vayusena Nagar Nagpur Repairs Maintenance Of Distribution Transfomers And Connected Items At Vayusena Nagar Nagpur. Submission Date for this Tender is 17-01-2022. Transformer Repair Tenders in GE AF NAGPUR Maharashtra. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 10-Jan-2022 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 17-01-2022 |
| Sl. No. | Item Description |
| 1 | Dehydration andFiltrations of transformer oil of distribution/power transformer of different capacities through stream line filter unitto increase di -electric strength (BDV) of transformer oil not less then 40 KV for 1 minute at 2.5 mm gap including topping up transformer oil to the required level as indicated to each transformer and testing, transformer oil before and after filtration submission of records of test in duplicate all as directed by Engr-in-Charge .Note: Transformer oil for topping up will be measured and paid separately |
| 2 | M & L for dismantling the 33 KV HT Supply and isolating the power transformer of capacity 750/1500 KVA draining out the insulating oil from the tankfor dehydration.Opening the top cover, removing the damaged gasket and replace the same size / thickness of new gasket of transformer, conservatory tank oil indicator, inlet & outlet valve gasket in position replacing the defective, burntbushes with gaskets and brass studs if required re-filling back drained transformer oil and ensuring no leakages of oil from any part of the transformers and then testing energizing complete. Note :- (a) Fresh transformer oil for topping up will be measured and paid separately. (b)Bushes and brass studs will be measured and paid separately. |
| 3 | M & L for dismantling the 11 KV HT Supply and isolating the distribution transformer of capacity 100/160/200/315/500 KVA draining out the insulating oil from the tankfor dehydration.Removing the damaged gasket and replace the same size / thickness of new gasket of transformer, conservatory tank oil indicator, inletoutlet valve gasket in position replacing the defective, burntbushes with gaskets and brass studs if required re filling back drained transformer oil and ensuring no leakages of oil from any part of the transformers and then testing energizing complete. Note :- (a) Fresh transformer oil for topping up will be measured and paid separately. (b)Bushes and brass studs will be measured and paid separately. |
| 4 | Material and Labour for replacing silica gel air breather container clear view type, first fill of good quality silica gel of the following capacities. (a) Capacity ofTransformers 100 KVA to 500 KVA |
| 5 | (b) Capacity ofTransformers 1500/750 KVA |
| 6 | Disconnecting and dismantling & complete overhauling of Transformercapacity up to 750 KVA,after disconnecting of electric supply and earth connections including transportation to work shop,drained out transformer oil, lifting/removing of top cover of transformer & cores with chain pully blocks/crane, cleaning of sludge and washed down with the help of spray of clean oil and re-assembling of transformer with S&F of new gasket set assembly, replacement of nuts, bolts and washers as required, re filling of Transformer oil after centrifuging at satifactory dielectric strength complete after electric connections and testing all as specified and directed. |
| 7 | M&L for Fillingof new transformer oil confirming IS 335/93 topping of transformer and OLTC Tank through stream lile filter shaving dielectric strength not less than 60 KV complete including centrifuging of oil (if required) up to getting dielectric strength near 60 KV all as specified and directed. |
| 8 | M&L for rewinding of HV coil with suitable gauge of copper wire/strip including insulation of coil complete all as specified and directed. |
| 9 | M&L for rewinding of LV coil with suitable gauge of copper wire/stripincluding insulation of coil complete all as specified and directed. |
| 10 | M&L for reinsulation of existing HV copper coil complete all as specified and directed. |
| 11 | M&L for reinsulation of existing LV copper coil complete all as specified and directed. |
| 12 | M&L for insulation of core, bushing,Tap changer and etc all as specified and directed. |
| 13 | M&L for Ovan Drying of transformer of capacity up to 500 KVA complete all as specified and directed. |
| 14 | M&L for Ovan Drying of transformer of capacity up to 750 KVA complete |
| 15 | M & L for painting the transformers two coats of synthetic enamel paint of colour smoke gray including scraping and removing the old painted surfaces painting with two coats of supper enameled paint for following:- (a)100 KVA to 160 KVA |
| 16 | (b)200 KVA to 315 KVA |
| 17 | (c) 500 KVA to 750 KVA |
| 18 | (d) 1500 KVA |
| 19 | Material and Labour for Laying Stone Aggregates loose filling size of 40 mm for around distribution Transformer yard after scarifying and stacking the existing aggregate all as specified and directed. |
| 20 | M & L for earthing complete with galvanised steel earth plate electrode 60x60x6.0mm thick burried directly in ground ( earth pit not less than 2.25 meters deep below ground level) with to edge of the plate not less than 1.5 Mtrs below normal ground level connected to galvanised earth strip of 32x6mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No 5 of SSR Part I - 1991 connected to earthing test point all as specified and indicated including testing on completion all as specified and directed. Note: The rate is deemed to be inclusive of the cost of earth work, excavation on any type soil and removal of surplus soil to a distance of 50 Mtrs, PCC 1:2:4 type B1 for earth pit cover 6 NOs 8mm dia CTD Bar earth lead protection GI pipe medium grade 15mm size from earth plate electrode to main switch board. |
| 21 | M & L for Lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 10 kilo amp suitable for 33 KV complete all as specified and directed. |
| 22 | S&F Battery charger unit 30 V, 5 Amps capacity for Protective Relay triping circuit Back up with Voltage selection , digital Volt meter and Ammeter etc., complete all as specified and directed. |
| 23 | M & L for test point terminal block made of made of gun metal or phosphorus bronze of size 75x75x25 mm drilled and screwed including 3 nos, 8 mm dia 25 mm long hexagonal head screw complete all as specified and directed. |
| 24 | M & L for Aluminium strip 25x3.15 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground complete all as specified and directed. |
| 25 | Supply and installof gang operated air break switch 9 insulator horizontal type mounting on steel frame complete, double break and operating rod of stuitable length 400A capacity and suitable for 33 KV HT supply complete all as specified and directed. |
| 26 | S & F new moulded case circuit breakers 400 Amp 4 Pole 36 KA in the existing feeder Pillar box with new bolts and nuts including connecting the incoming and out going cables etc. complete all as specified and directed. |
| 27 | Servicing of CT/PT of 33 KV capacity including replacement of old gasket with new gasket of same type/size and topping up of new oil of same grade and replacement of old nut bolt washers etc complete all as specified and directed. Note : Servicing will be done by authorised dealer only |
| 28 | M & L for LT bushing out door/In door type 1.1 KV L.V 250 Amps brass matel part as per IS 3347/1967 complete with bushing brass stem nut,bplt,washers, brass studs and gasket etc complete all as specified and directed. |
| 29 | M & L for HT bushing out door/In door type 11 KV 250 Amps brass matel part as per IS 3347/1967 complete with bushing brass stem nut,bplt,washers, brass studs and gasket etc complete all as specified and directed. |
| 30 | M & L for Silica gel of good quality complete all as specified and directed. |
| 31 | S&F Pin type Porcelain vitreous white, brown or green insulator including one galvanised MS sprindle, two galvanised iron washers and one galvanised iron nuts 150mm height,150 mm dia for 11000 Volts grade complete all as specified and directed. |
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