Military Engineer Services Tender

Dismantling and Taking down the unserviceable breather assembly with silica gel complete for 630 kVA to 1250 kVA transformer and supply and fix New breather assembly complete with breather unit and silica gel including connecting with proper rubberized gasket to the transformer Suply & filling of oil cup of breather assembly complete all as specified and directed by Engineer-in-Charge.

Disconnecting Electric supply of defective indoor/outdoor type transformer of 63kVA to 100kVA from HT/LT sides drain out transformer oil completely and keep storing the oil in suitable clean container (to be provided by the contractor) opening Top Cover and lifting the assembly and core assembly carefully and checking the condition, assembling the transformer and refilling the transformer oil completely after necessary repair in-situ, and fixing the top cover complete all as specified and directed by Engineer - in - Charge.

Description all as per item No 5 here-in-before but for transformer of capacity 160 kVA to 200 kVA.

Description all as per item No 5 here-in-before but for transformer of capacity 250 kVA to 315 kVA.

Description all as per item No 5 here-in-before but for transformer of capacity 400 kVA to 500 kVA.

Description all as per item No 5 here-in-before but for transformer of capacity 630 kVA to 1250 kVA.

Supply, filling and topping up the transformer with new transformer oil as per specifications. Note:- (a) The transformer oil shall be type EHV confirming to IS 3357 of 1983 and shall be in company sealed container/ Barrel. (b) Mineral oil grade 'B' shall be used. (c) The transformer oil should have a high dielectric strength shall be treated before topping up not less than 60KV. Make: Indian oil corporation/BPCL/HPCL (d) The empty barrel shal be deposited in MES store yard.

Filtration/dehydration of transformer oil through filtration plant to improve the dielectric strength/insulation value of the transformer oil upto 40KV Note: (a) The contractor will take shut down orders in working before commencement of the work from Engineer-in-charge and will ensure proper safety measeures before filtration. (b) The contractor shall ensure to Avoid wastage of transformer oil. (c) The contractor shall be fully responsible for any damage to the transformer during filtration operations. He is responsible for making good any damage to the transformer at his own cost without any extra cost to the department. (d) The contractor shall ensure that the conservator tanks are full to its level after the dehydration. (e) Necessary topping up will be measured and paid under relevent item of Sch 'A'.

S&F in replacement of existing unserviceable temperature gauge old type with new temperature gauge of existing specification/Model complete all as specified and directed.

Supply and replacing silica gel for the breather assembly complete all as specified and directed.

Disconnecting the 63 kVA to 160 kVA 11KV/430Volts indoor/outdoor transformer HT/LT side, drain out transformer oil, storing the oil in suitable properly cleaned container/barrels from (to be provided by the contractor) and opening the top cover and disconnecting the connection of core assebly lifting the core assembly as per requirements rectifying the fault. After rectification fault of transformer (at civil workshop) proper positioning of core windings and refilling the transformer oil and fixing of top cover properly. Testing and connecting the both HT & LT connections and cables, commissioning of transformer after checking voltage and loading the transformer to the full load all as specified and directed. Note: Transportation charges to civil workshop and return to location shall be included in the quoted rate.

Description all as per item No 14 here-in-before but for transformer of capacity 250 kVA to 315 kVA.

Description all as per item No 14 here-in-before but for transformer of capacity 400 kVA to 500 kVA.

Description all as per item No 14 here-in-before but for transformer of capacity 630 kVA to 750 kVA.

Description all as per item No 14 here-in-before but for transformer of capacity 1250 kVA.

Dismantling and taking out the existing unserviceable circuit tap changer assembly and supply and fix new circuit tap changer assembly suitable for any make of 63 kVA to 500 kVA transformer with 7 tapping position etc, complete all as specified and directed. Note: - Contractor shall be fully responsible for making good of any damage to transformer during tap changing operations.

Dismantling and taking out the existing unserviceable circuit tap changer assembly and supply and fix off circuit tap changer assembly suitable for any make of 630 kVA to 1250 kVA transformer with 7 tapping position etc, complete all as specified and directed. Note: - Contractor shall be fully responsible for making good of any damage to transformer during tap changing operations.

Supply and fixing with replacement HT (11 KV) bushing assembly including brass stud, nuts, washers, insulators etc. suitable for indoor/outdoor transformer of capacity 63 kVA to 500 kVA complete all as specified and directed by Engineer-in-Charge.

All as per item 21 here-in-before but 630 kVA to 1250 kVA.

Supply and fixing with replacement 18 mm dia LT bushing assembly including brass stud nuts, check nuts washers oil seal insulators etc complete all as specified and directed by Engineer-in-Charge.

Description all as item No.23 here-in-before but of size 20 mm dia

Description all as item No. 23 here-in-before but of size 32 mm dia

Material and labour for preparation of old painted surfaces of floor mounted/pole mounted indoor/outdoor type transformer for the following capacity by cleaning/rubbing with course cloth wire brushes to remove dust deposits, oil, grease and painting with two coats of synthetic enamel paint complete including writing the SM No./MES No. on transformers with white paint and black rectangular back ground in the existing style/pattern complete all as specified and directed.

Transformer of capacity 63 KVA to 200 KVA.

Transformer of capacity 250 KVA to 500 KVA.

Transformer of capacity 630 KVA to 1250 KVA.

Dismantling and taking down existing unserviceable/worn out danger notice plate of 11 kV, supply & fixing of danger notice plate 25x20cm size and 1.6 mm thick mild steel vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with and including connected accessories such as fixing clamp, nuts and bolts etc., complete all as specified and directed.

Material and labour for replacement of earthing complete with galvanized steel earth plate electrode 600mm x 600mm x 6mm buried directly in ground vertically to a depth not less than 2.25 metre below normal ground level (with top edge of earth plate not less than 1.5 metre below ground level) connected to galvanized iron earth strip 32x6 mm (main earthing lead) by means of galvanized bolts, nuts and washers all as shown in electrical plate No 3 of MES Schedule Part-I (2009) with connected to earth test point & to main switch board with & including adequate quantity of charcoal dust and common salt alround earth plate & 40 mm dia GI pipe medium grade for earth lead protection pipe for suitable length and GI pipe 20 mm dia medium grade for watering pipe with funnel & wire mesh including necessary earth work and PCC (1: 3 : 6) type C-1 for earth pit , internal surface of concrete shall be given 10mm thick plaster in CM 1:4 and 40 mm thick precast RCC cover in 1 : 2 : 4 type B1 with 3 Nos 8 mm dia TMT bars both ways with 12mm dia round bar handle complete all as specified & directed by Engineer-in-Charge.

Supply and fixing following spare parts required for repair of transformer/junction Box/Panel:-

Aluminium Lugs of 95 to 150 Sqmm size for LT/HT Cable.

Aluminium Lugs of 240 to 400 Sqmm size for LT/HT Cable.

Disconnecting of Electric supply from HT/LT side of Transformar and drain out transformer oil completely, storing the oil in suitable container/barrels properly cleaned ones (to be provided by the contractor) lifting the transformer from the sub station and shifting to civil workshop and opening the top cover. and Taking out core Assembly , removing the same and fixing including of high quality suitable rating sleeve insulating materials like varnish etc, complete after necessary arrangement necessary insulation spacing blocks, runners and proper refixing of core including proper drying/ovening has to be done in drying chamber after drying/Ovening, taking the core coil assembly, filling the filtered transformer oil, replacement of suitable size rubberized cork gasket, bolts and nuts etc complete by fixing top cover, conservator etc, through cleaning the transformer complete and testing complete at civil workshop. Shifting of transformer from civil workshop to sub station and Installation of transformer, testing and connecting the both HT & LT cables, commissioning of transformer after checking voltage and loading the transformer to the full load all as specified and directed.

Note:- (i) HT & LT copper coil/ strips and insulation material PCB electrical grade such as barriers coil to coil insulation block and rings insulation cylinders, ebonite sleeves shall be measured and paid separately under relevant item schedules. (ii) Proper drying has to be done in drying chamber after drying, taking the core coil assembly, filling the filtered transformer oil, replacement of suitable size rubberized cork gasket, bolts and nuts etc complete by fixing top cover, conservator etc, through cleaning the transformer complete and testing complete at civil workshop. (iii) Transformer oil shall be measured and paid separately under relevant item of schedule. (iv) The cost of coil will be inclusive of varnish sleeving and insulating material.

Transformer of capacity 63 kVA to 200 kVA.

Transformer of capacity 250 kVA to 500 kVA.

Transformer of capacity 630 kVA to 1250 kVA.

Supply only new LT copper strips/Coil made out of proper size of DPC copper strips super enameled of high quality matching with the existing impedances and insulation, coil will be inclusive of varnish sleeving for 63 to 1250 kVA transformer all as specified and directed by Engineer -in-Charge.

Supply only new HT copper coil/Strips made out of proper size DPC copper wire super enameled of higher quality matching with the existing impedance and insulation, coil will be inclusive of varnish sleeving for 63 to 1250 kVA transformer all as specified and directed by Engineer - in - Charge.

Supply only insulation material PCB electrical grade such as barriers coil to coil insulation block and rings insulation cylinders, ebonite sleeves complete all as specified and directed by Engineer-in-charge.