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| 1 | Handling and Dragging of Transformer from stacking yard to repairing hall with accessories. | Handling and Dragging of Transformer from stacking yard to repairing hall with accessories. |
| 2 | Cutting/Opening of top cover plates & fitting of the transformers, draining of its oil & Detanking of core & coil Assembly with help of pneumatic tools. | Cutting/Opening of top cover plates & fitting of the transformers, draining of its oil & Detanking of core & coil Assembly with help of pneumatic tools. |
| 3 | Dismantling of core & coil Assembly and cleaning of core and tank (inside) by using warm old oil and hot air making it dirt free/sludge free. | Dismantling of core & coil Assembly and cleaning of core and tank (inside) by using warm old oil and hot air making it dirt free/sludge free. |
| 4 | Reconditioning/ Making of L.V leg coils from reconditioned strips/new DPC strips, of same size and No. of turns and dimensions as old one. | Reconditioning/ Making of L.V leg coils from reconditioned strips/new DPC strips, of same size and No. of turns and dimensions as old one. |
| 5 | Reconditioning/Making of H.V leg coils from new DPC or SE wire of same size and No. of turns and dimensions as old one. | Reconditioning/Making of H.V leg coils from new DPC or SE wire of same size and No. of turns and dimensions as old one. |
| 6 | Assembly of core, channel (duly painted by zinc chromatic paint) & coil and fitting of other parts requiring replacements such as press board making supports between adjacent section by insulating spacers & tapping etc. | Assembly of core, channel (duly painted by zinc chromatic paint) & coil and fitting of other parts requiring replacements such as press board making supports between adjacent section by insulating spacers & tapping etc. |
| 7 | Shifting and keeping the assembled core& coil etc. in OVEN from the repairing area. | Shifting and keeping the assembled core& coil etc. in OVEN from the repairing area. |
| 8 | Dragging of transformer tank to washing area and cleaning of rust/dirt etc from outer surface by using caustic soda & water solution. | Dragging of transformer tank to washing area and cleaning of rust/dirt etc from outer surface by using caustic soda & water solution. |
| 9 | Repairing of damaged T/F body/radiator by electric/gas welding complete in all respect for arresting oil leakage. | Repairing of damaged T/F body/radiator by electric/gas welding complete in all respect for arresting oil leakage. |
| 10 | Completely drying & Cleaning of T/F tank (inside and outside) by using hot air/cotton waste/sand paper etc completely and making it ready for painting | Completely drying & Cleaning of T/F tank (inside and outside) by using hot air/cotton waste/sand paper etc completely and making it ready for painting |
| 11 | Painting of inner side of T/F tank with heatproof zinc chromatic paints in two coats after providing primer of red oxide paint. | Painting of inner side of T/F tank with heatproof zinc chromatic paints in two coats after providing primer of red oxide paint. |
| 12 | Dragging/shifting out empty tank after painting to assembly area. | Dragging/shifting out empty tank after painting to assembly area. |
| 13 | Taking out core and coils assembly from the OVEN and shifting to repairing area & again tightening the assembly. | Taking out core and coils assembly from the OVEN and shifting to repairing area & again tightening the assembly. |
| 14 | Welding/fixing the top cover after tanking of core and coil assembly into painted tank and tightening of assembly into the tank and fitting all accessories of transformer with help of pneumatic tools and filling of oil, alongwith bringing oil gauge in working condition for transformers in which oil gauge, cast iron and nut bolts are present | Welding/fixing the top cover after tanking of core and coil assembly into painted tank and tightening of assembly into the tank and fitting all accessories of transformer with help of pneumatic tools and filling of oil, alongwith bringing oil gauge in working condition for transformers in which oil gauge, cast iron and nut bolts are present |
| 15 | Spray painting of transformer tank from outside with super enamel synthetic Grey paint in two coats after providing primer of red oxide paint | Spray painting of transformer tank from outside with super enamel synthetic Grey paint in two coats after providing primer of red oxide paint |
| 16 | Dragging/shifting of repaired T/F near to the test cabin/testing place and dragging /shifting T/F to yard after testing and its stacking at identified place. | Dragging/shifting of repaired T/F near to the test cabin/testing place and dragging /shifting T/F to yard after testing and its stacking at identified place. |
| 17 | Punching and welding of M.S. plate of 100x50x3mm size on the outside of T/F containing following information. (I) Unique number, (II) Capacity (III) Name of workshop (IV) Date of repair | Punching and welding of M.S. plate of 100x50x3mm size on the outside of T/F containing following information. (I) Unique number, (II) Capacity (III) Name of workshop (IV) Date of repair |
| 18 | Making of broken delta/Star connection with suitable size of Alu. Ferrule/soldering the joint with suitable brazing rod including all associated work. | Making of broken delta/Star connection with suitable size of Alu. Ferrule/soldering the joint with suitable brazing rod including all associated work. |
| 19 | Making of broken HV/LV lead connection with suitable size of Alu. Ferrule including all associated work. | Making of broken HV/LV lead connection with suitable size of Alu. Ferrule including all associated work. |
| 20 | Handling and Dragging of damaged Transformer from stacking yard to repairing hall with accessories | Handling and Dragging of damaged Transformer from stacking yard to repairing hall with accessories |
| 21 | Cutting/Opening of top cover plates & fitting of the transformers, draining of its oil & Detanking of core & coil Assembly with help of pneumatic tools. | Cutting/Opening of top cover plates & fitting of the transformers, draining of its oil & Detanking of core & coil Assembly with help of pneumatic tools. |
| 22 | Dismantling of core & coil Assembly and its cleaning. | Dismantling of core & coil Assembly and its cleaning. |
| 23 | Dismantling of Shell Core and coil assembly. Removing of HV and LV Leg coils for assessing its reuse, reuse of major insulating material if possible, checking and recording of physical dimensions of coil. | Dismantling of Shell Core and coil assembly. Removing of HV and LV Leg coils for assessing its reuse, reuse of major insulating material if possible, checking and recording of physical dimensions of coil. |
| 24 | Making of complete HV & LV leg Alu. Leg coils identical to original one with same number of turns, weight etc providing super enameled/DPC conductor/ Strip confirming to IS 1971 153 in place of old and damage coil. Alu. coil, wire strip will be provided by the department. All coil assembly of identical voltage shall be interchangeable without requiring any special equipment. Shell Coil shall be supported between adjacent sections by insulations (flick Paper) Paper, spacers, beamers and other insulations. Rewinding shall be arranged to ensure free circulation of oil to reduced hot spots in winding. The insulation of coil shall be treated with suitable insulating, varnish or equivalent compound to develop the full electrical strength of | Making of complete HV & LV leg Alu. Leg coils identical to original one with same number of turns, weight etc providing super enameled/DPC conductor/ Strip confirming to IS 1971 153 in place of old and damage coil. Alu. coil, wire strip will be provided by the department. All coil assembly of identical voltage shall be interchangeable without requiring any special equipment. Shell Coil shall be supported between adjacent sections by insulations (flick Paper) Paper, spacers, beamers and other insulations. Rewinding shall be arranged to ensure free circulation of oil to reduced hot spots in winding. The insulation of coil shall be treated with suitable insulating, varnish or equivalent compound to develop the full electrical strength of |
| 25 | Assembly of Shell core (Three Limbs) coils and fitting of top and other parts. Replacement of insulation such as press board, craft paper, making support between adjacent section by insulating spacers and wrapping etc. shifting of repaired core coil assembly and placement inside the oven for proper dry out. | Assembly of Shell core (Three Limbs) coils and fitting of top and other parts. Replacement of insulation such as press board, craft paper, making support between adjacent section by insulating spacers and wrapping etc. shifting of repaired core coil assembly and placement inside the oven for proper dry out. |
| 26 | Shifting and keeping the assembled core& coil etc. in OVEN from the repairing hall | Shifting and keeping the assembled core& coil etc. in OVEN from the repairing hall |
| 27 | Dragging of transformers tank from the repairing hall to washing area and its complete washing, cleaning, removing of rust and carbon etc. | Dragging of transformers tank from the repairing hall to washing area and its complete washing, cleaning, removing of rust and carbon etc. |
| 28 | Repairing of damaged T/F body/radiator by electric/gas welding complete in all respect for arresting oil leakage. | Repairing of damaged T/F body/radiator by electric/gas welding complete in all respect for arresting oil leakage. |
| 29 | Painting of inner side of T/F tank with heatproof zinc chromatic paints in two coats after providing primer of red oxide paint. | Painting of inner side of T/F tank with heatproof zinc chromatic paints in two coats after providing primer of red oxide paint. |
| 30 | Dragging/shifting out completely dried empty tank after painting to repairing hall. | Dragging/shifting out completely dried empty tank after painting to repairing hall. |
| 31 | Taking out core and coils assembly from the OVEN and shifting to repairing hall. | Taking out core and coils assembly from the OVEN and shifting to repairing hall. |
| 32 | Welding/fixing the top cover after tanking of core and coil assembly into painted tank and tightening of assembly into the tank and fitting all accessories of transformer with help of pneumatic tools and filling of oil, along with bringing oil gauge in working condition for transformers in which oil gauge, cast iron and nut bolts are present | Welding/fixing the top cover after tanking of core and coil assembly into painted tank and tightening of assembly into the tank and fitting all accessories of transformer with help of pneumatic tools and filling of oil, along with bringing oil gauge in working condition for transformers in which oil gauge, cast iron and nut bolts are present |
| 33 | Spray painting of transformer tank from outside with supper enamel synthetic Grey paint in two coats after providing primer of red oxide paint | Spray painting of transformer tank from outside with supper enamel synthetic Grey paint in two coats after providing primer of red oxide paint |
| 34 | Dragging/shifting of repaired T/F near to the test cabin/testing place and dragging /shifting T/F to yard after testing and its stacking at identified place. | Dragging/shifting of repaired T/F near to the test cabin/testing place and dragging /shifting T/F to yard after testing and its stacking at identified place. |
| 35 | Punching and welding of M.S. plate of 100x50x3mm size on the outside of T/F containing following information. (I) Job number, (II) Capacity (III) Name of workshop (IV) Date of repair | Punching and welding of M.S. plate of 100x50x3mm size on the outside of T/F containing following information. (I) Job number, (II) Capacity (III) Name of workshop (IV) Date of repair |
| 36 | Making of broken delta/Star connection with suitable size of Alu. Ferrule/soldering the joint with suitable brazing rod including all associated work. | Making of broken delta/Star connection with suitable size of Alu. Ferrule/soldering the joint with suitable brazing rod including all associated work. |
| 37 | Making of broken HV/LV lead connection with suitable size of Alu. Ferrule including all associated work. | Making of broken HV/LV lead connection with suitable size of Alu. Ferrule including all associated work. |
| 38 | Handling and Dragging of damaged Transformer from stacking yard to repairing hall with accessories | Handling and Dragging of damaged Transformer from stacking yard to repairing hall with accessories |
| 39 | Cutting/Opening of top cover plates & fitting of the transformers, draining of its oil & Detanking of core & coil Assembly with help of pneumatic tools. | Cutting/Opening of top cover plates & fitting of the transformers, draining of its oil & Detanking of core & coil Assembly with help of pneumatic tools. |
| 40 | Dismantling of core & coil Assembly and cleaning of core and tank (inside) by using warm old oil and hot air making it dirt free/sludge free. | Dismantling of core & coil Assembly and cleaning of core and tank (inside) by using warm old oil and hot air making it dirt free/sludge free. |
| 41 | Reconditioning of L.V leg coils strips including removing of old double paper covering and cleaning of strip than providing double paper covering | Reconditioning of L.V leg coils strips including removing of old double paper covering and cleaning of strip than providing double paper covering |
| 42 | Making of L.V leg coils from reconditioned strips/new DPC strips, of same size and No. of turns and dimensions as old one. | Making of L.V leg coils from reconditioned strips/new DPC strips, of same size and No. of turns and dimensions as old one. |
| 43 | Reconditioning of old damaged H.V. leg coils wire by removing old Double paper covering, cleaning of wire and providing new DPC insulation etc. | Reconditioning of old damaged H.V. leg coils wire by removing old Double paper covering, cleaning of wire and providing new DPC insulation etc. |
| 44 | Making of H.V leg coils from reconditioned/new DPC wire of same size No. of turns and dimensions as old one. | Making of H.V leg coils from reconditioned/new DPC wire of same size No. of turns and dimensions as old one. |
| 45 | Assembly of core, channel (dully painted by zinc chromatic paint) & coil and fitting of other parts requiring replacements such as press board making supports between adjacent section by insulating spacers & tapping etc. | Assembly of core, channel (dully painted by zinc chromatic paint) & coil and fitting of other parts requiring replacements such as press board making supports between adjacent section by insulating spacers & tapping etc. |
| 46 | Shifting and keeping the assembled core & coil etc. in OVEN from the repairing area | Shifting and keeping the assembled core & coil etc. in OVEN from the repairing area |
| 47 | Dragging of transformer tank to washing area and cleaning of rust/dirt etc from outer surface by using caustic soda & water solution. | Dragging of transformer tank to washing area and cleaning of rust/dirt etc from outer surface by using caustic soda & water solution. |
| 48 | Repairing of damaged T/F body/radiator by electric/gas welding complete in all respect for arresting oil leakage. | Repairing of damaged T/F body/radiator by electric/gas welding complete in all respect for arresting oil leakage. |
| 49 | Completely drying & Cleaning of T/F tank (inside and outside) by using hot air/cotton waste/sand paper etc completely and making it ready for painting | Completely drying & Cleaning of T/F tank (inside and outside) by using hot air/cotton waste/sand paper etc completely and making it ready for painting |
| 50 | Painting of inner side of T/F tank with heatproof zinc chromatic paints in two coats after providing primer of red oxide paint. | Painting of inner side of T/F tank with heatproof zinc chromatic paints in two coats after providing primer of red oxide paint. |
| 51 | Dragging/shifting out empty tank after painting to assembly area. | Dragging/shifting out empty tank after painting to assembly area. |
| 52 | Taking out core and coils assembly from the OVEN and shifting to repairing area & again tightening the assembly. | Taking out core and coils assembly from the OVEN and shifting to repairing area & again tightening the assembly. |
| 53 | Welding/fixing the top cover after tanking of core and coil assembly into painted tank and tightening of assembly into the tank and fitting all accessories of transformer with help of pneumatic tools and filling of oil, alongwith bringing oil gauge in working condition for transformers in which oil gauge, cast iron and nut bolts are present | Welding/fixing the top cover after tanking of core and coil assembly into painted tank and tightening of assembly into the tank and fitting all accessories of transformer with help of pneumatic tools and filling of oil, alongwith bringing oil gauge in working condition for transformers in which oil gauge, cast iron and nut bolts are present |
| 54 | Spray painting of transformer tank from outside with supper enamel synthetic Grey paint in two coats after providing primer of red oxide paint. | Spray painting of transformer tank from outside with supper enamel synthetic Grey paint in two coats after providing primer of red oxide paint. |
| 55 | Dragging/shifting of repaired T/F near to the test cabin/testing place and dragging /shifting T/F to yard after testing and its stacking at identified place. | Dragging/shifting of repaired T/F near to the test cabin/testing place and dragging /shifting T/F to yard after testing and its stacking at identified place. |
| 56 | Punching and welding of M.S. plate of 100x50x3mm size on the outside of T/F containing following information. (I) Job number, (II) Capacity (III) Name of workshop (IV) Date of repair | Punching and welding of M.S. plate of 100x50x3mm size on the outside of T/F containing following information. (I) Job number, (II) Capacity (III) Name of workshop (IV) Date of repair |
| 57 | Making of broken delta/Star connection with suitable size of Alu. Ferrule/soldering the joint with suitable brazing rod including all associated work. | Making of broken delta/Star connection with suitable size of Alu. Ferrule/soldering the joint with suitable brazing rod including all associated work. |
| 58 | Making of broken HV/LV lead connection with suitable size of Alu. Ferrule including all associated work. | Making of broken HV/LV lead connection with suitable size of Alu. Ferrule including all associated work. |