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| 1 | Note :Prior to commencement of the subject works, the contractor needs to submit valid Electrical License in the name of himself/them self or Agreement with agency having valid Electrical License alongwith Agency\"s Electrical License to the Accepting Officer for his approval through GE. In absence of such documents, no work will be executed at site and to be treated as defaulter on the Contractor\"s part . In addition, Supervisor for execution of electrical works employed by the Contractor shall posses Supervisory Certificate of competency issued by concerned State Govt/Union Territory and the Worker/Tradesman for execution of Electrical Works must hold necessary permit issued by concerned State Govt/Union Territory. |
| 2 | Material and Labour for Servicing of Natural Oil Cooled Transformer including taking proper shutdown from HT side and disconnecting all HT and LT cables, checking drain plug and replacing where required, checking oil level indicator and replacing where required, checking of silica gel breathers, claening and polishing both side HT & LT bushing and studs, bushing rod, servicing of tap changing gears by cleaning and polishing tapping contact points, rectify the oil leakages issues, if noticed any from the entire body of the transformer, cleaning all sludge from main oil tank and conservator tank and removal off the site, manual cleaning the cores and windings from sediments and foreign particles deposited on cores/ windings/ body, replacing the gaskets and bolts/Nuts as reqd for under mentioned capacities of transformers.Note 1: Inspection of transformer shall involve:-(a) Checking of all clamps, nuts, bolts including core bolts & cover fixing bolts etc (b) Checking all brazings, joints, tap heads, gaskets and connection joints. (c) Checking all terminations/connections inside/outside the transformer. (d) Checking of off load tap changer assembly, checking the moving and fixed contacts for contact wear and connection to winding(e) Conducting the test on core and windings as per IS like ratio, magnetic imbalance, short circuit, IR Value, High Voltage Test etc. in presence of Engr-in-Charge: |
| 3 | Note 2: The materials used rewinding of primary & secondary coils, Iron Core, bushes studs HT/LT, bushing rod HT/LT, buschholtz relay, Gaskets set for servicing will be measured and paid under separate item. Dehydration and topping up of transformer oil will be measured and paid under separate item but must be done at the time of servicing Other minor spares/ materials not mentioned in the schedule viz drain plug, M seal monoplast kit, bolts and nuts, materials and tools used for servicing, lowering/ lifting of transformer, tools required for cleaning or core/ windings, tools required for cutting of gaskets etc deemed to be included in the quoted rate. |
| 4 | (a) Transformer 11/0.415 KV of capacity 400 KVA Make of Transformer-Volt Amp |
| 5 | (b) Transformer 11/0.415 kV of capacity 315 KVA Make of Transformer - Volt Amp |
| 6 | Material and labour for Draining out all the transformer oil and preserving in air tight Pe container and Dehydration and filtration of transformer oil with streamline transformer oil purification/ dehydration machine including heating for removing moisture content to bring down the parameters of the oil within the permissible limit as laid down in IS 1866.2000 all as specified and as directed including testing and topping up with new transformer oil upto optimum level for transformers 6/0.415 kV of capacity 315 and 400 KVA:- [Note: (i) Cost of pouring new transformer oil to maintain the optimum level deemed to be included in the quoted rate. The quantity of new transformer oil will be measured and paid under separate item as supply only (ii) The cost of re-filtration/ re-cehydration in case the parameters of filtered oil does not comply with the laid down limits as per IS, deemed to be included in the quoted rate] |
| 7 | Supply only new transformer oil in non-returnable containers including testing of F parameters from Govt authorised laboratory as per IS: 335:1993 all as specified and as directed. |
| 8 | Supply only silica gel breather including initial filing with required quantity of silica gel for transformers of 315 and 400 KVA capacities all as specified and as directed Make: Jaipuria Brothers Electrical Pvt Ltd or equivalent in other approved make. |
| 9 | Supply only porcelain transformer bushing with bushing rod (studs) made out of brass/ gun metal with threading and of suitable length /size as per existing including metal rings, bolts, washers, rubber rings, etc fo HT primary side of existing 11/0.433 kV step down transformer of capacity 315 KVA and 400 KVA complete all as specified and as directed. |
| 10 | Supply only porcelain transformer bushing with bushing rod (studs) made out of brass/ gun metal with threading and of suitable length /size as per existing including metal rings, bolts, washers, rubber rings, etc for LT secondary side of existing 11/0.433 kV step down transformer of capacity 315 KVA and 400 KVA complete all as specified and as directed. |
| 11 | Supply only in replacement of hand operated off load tap changing gear assembly suitable for existing 11/0.433 kV step down transformer of capacity 315 KVA and 400 KVA complete all as specified and as directed. |
| 12 | Supply only in replacement of Oil temperature gauge ranging from 0 to 150 degree C suitable for existing 11/0.433 kV step down transformer of capacity 315 KVA and 400 KVA complete all as specified and as directed. |
| 13 | Supply only best quality good oil resistant gasket sheet suitable for oil cooled transformer as per IS: 4253 including cutting to shape as per existing size of transformer top covers and side covers all as specified and as directed. |
| 14 | Material and labour for dismantling, lowering lifting of transformer and transporting it to workshop for rewinding work and taking back to the site after rewinding and reinstalling the transformer complete all as specified and directed by the Engr-in-charge. |
| 15 | Material and labour for rewinding of existing step down 11/ 433 KV transformer HT/LT coil of capacity 315 / 400 KVA using super enamelled copper wire of suitable gauge and specifications including super enamelled iron core as per existing gauge and specifications, including heating up, drying, varnishing, re-insulating with insulation of necessary class complete all as specified and directed by the Engr-in-charge. |
| 16 | Material and labour for painting of transformers with two coats of synthetic enamel paint of approved colour and writing MES No with Capital letters after removing of old paints by paint removing chemicals and mild scrapping for transformers of 315 and 400 KVA capacities all as specified and as directed. |
| 17 | M&L for maintenance of Vacuum circuit breaker SF6 panel of Make: Areva, 11 kV grade, rated current 800 Amps by auth rep of OEM or equivalent skilled technician involving following jobs: - (a) Switching off VCB and confirming that supply to incoming end is properly disconnected.(b) Opening covers of the circuit breaker and visual checking of epoxy housing and all parts for rust and wear.(c) Cleaning all parts of the breaker compartment with appropriate chemical to remove dust and dirt and wiping of the envelop of the vacuum interrupter and insulating material with a clean and dry cloth.(d) Lubricating of rotary sections and moving parts, sliding surfaces, pins, coupling section etc by applying a small amount of grease/ petroleum jelly/ machine oil as applicable. |
| 18 | Note Contd/...(e) Charging of SF6 gas and rectifying the gas leakage issues and calibration of relay of any make (e.g. Earth Fault relay / Over current relay/ Master Trip relay etc). The fault level setting of these realy shall be as per-SEB norms.(f) Checking of PTS, CTs, control circuits, closing and tripping coil and all other parts.(g) Checking auxiliary supply and control voltage, control circuits and tightening of all connections.(h) Replacement of parts detected defective or less reliable.NOTE 1 : Following checks should be carried out after completion of job.(a) Primary power path check (i) Cleanliness check (ii) Inspection of flexible connections(b) Stored energy operator-mechanism checks (i) Maintenance and lubrication (ii) Fastner Check (iii) Manual spring Charging check(c) Electric control checks (i) Wiring and control check (ii) Secondary disconnect check (iii) Automatic spring charging check (iv) Electrical close and trip check(d) Vaccuam integrity check(e) High potential check(f) Insulation test(g) Contact resistance test(h) Inspection and cleaning of circuit breaker insulation(j) All safetyand realay functional tests to be carried out and test report to be submitted to the Engr-in-Charge.NOTE 2 : Contractor will ensure and take all safety precautions/ preventive measures against the mechanic/ electrician at his own risk.NOTE 3 : The replaced spare parts shall be measured under separate items as supply only. |
| 19 | Supply only following items of 11 KV 800 Amps VCB against item No 13 here-in-before as per existing make and size:-(a) Busbar spout |
| 20 | (b) Nut for spout |
| 21 | (c)Upper Connection pad |
| 22 | (d) Lower Connection pad |
| 23 | (e) Spring Charging Motor with Gear Assembly |
| 24 | (f) Modified Pin |
| 25 | (g) Spider |
| 26 | (h) Trip Coil Box Assembly with Plunger - without Coil |
| 27 | (j) Busbar Support Insulator |
| 28 | (k) Thermostat for Space Heater |
| 29 | (l) Space Heater |
| 30 | (m) HRC Fuse-PT HT Side VTF 6.6, 3A |
| 31 | (n) Breaker Bushing |
| 32 | (o) Socket Contact |
| 33 | (p) Half Collar (Pair) |
| 34 | (q) Brass Nut |
| 35 | (r) Bearing |
| 36 | (s) Pin for Bearing |
| 37 | (t) Release/ Closing Coil |
| 38 | Maintenance of Ring Main Unit (SF6) with 02 Nos Incoming and 01 No outgoing of make: Areva, 11 kV grade of load breaker switch capcity 630 Amp by auth rep of OEM including the following:-(a) Switching off the all the incoming and confirming that supply to incoming end is properly disconnected(b) Opening covers of the RMU and visual checking of all parts for rust and wear.(c) Cleaning all parts to remove dust and dirt and wiping of the envelop of the moving contacts and insulating material with a clean and dry cloth.(d) Lubricating of rotary sections and moving parts, sliding surfaces, pins, coupling section etc by applying a small amount of machine oil and applying grease for operating shaft and bearings.(e)Checking of PTs anc CTS and all control circuits.(f) Replacement of parts detected defective or less reliable.Note 1 : Contractor will ensure and take all safety pre-cautions/preventive measures against the mechanic/electrician at his own risk.Note 2 : The replaced spare parts shall be measured under separate items as supply only. |
| 39 | Supply only following items against item No 38 here-in-above of 11 KV HT RMU 630 Amps as per existing make and size :- (a) Operating handle made up of high tensile GI as per existing specification |
| 40 | (b) Closed coil and tripped coil suitable to existing 11 KV HT RMU, motorised outdoor type |
| 41 | (c)Instantaneous O/C and E/F protection relay 30 V DC supply, numerical 4 pole, 3 O/C and E/F non directional protection relay including testing |
| 42 | (d) 11 KV HT cable terminal protector right angle boot to prevent flashover/ short circuit due to intervention by reptiles/ insects. |
| 43 | Material and Labour for Zinc Oxide Distribution class Lightning Arrestor 12 KV 10 KA as per IS: 3070 (Part-III) of make: Jaipuria Brothers Electrical Pvt Ltd or equivalent in other approved make. |
| 44 | Material and Labour for Aluminium strip 25 x 3 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground. |
| 45 | Material for Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex, head screw. |
| 46 | Supply and fixing Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed. |
| 47 | Supply and fixing Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed. |
| 48 | XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with aluminium conductor, 11000 volts (Earthed) grade cross sectional area 95 sq. Mm |
| 49 | Supply only insulating HT synthetic rubber mat of size 1 m x 2mx 2.5 mm thick as per IS: 15652 (2006) |
| 50 | Supply only insulating LT synthetic rubber mat of size 1 m x 2 m x 20mm thick as per IS:15652 (2006). |
| 51 | Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in soft/ loose soil. |
| 52 | Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm. in any type of soil. |
| 53 | Removing excavated material n exc. 50m and depositing where directed at a level n exc 1.5 m above the starting point in any type of soil. |
| 54 | Material and Labour for dry river Sand filling in trenches including punning down consolidation in soft/ loose soil. |
| 55 | Supplying and laying reinforced precast concrete cable cover, class class HV, Type 1. flat, size 300mmx 180mm x 40mm. |
| 56 | M & L for Mild steel plates, plain or chequered, 5mm thick or over in thickness in available sizes for use as duct covers as per existing size. |
| 57 | M & L for servicing and repairing of 11 KV HT (GOD) Gang Operating Device by taking proper shutdown and applying petroleum jelly on male female contacts, tightening Nut, Bolts and washers and also Jumpers, lightning arrestors, etc including preparation of surfaces of complete Two Pole structure with MS Channels, Cross Arms, Operating Handle etc and applying two coat of Aluminium paint on complete 2 pole structure including MS Channel. Cross Arms, Operating Handle etc complete all as specified and directed. |
| 58 | M & L in replacement for Danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed on HT Poles/ Transformer /Sub Stn Fencing/VCB Panels etc with MS clamps, bolts and nuts of required size, for 11 KV HT of size 250 X 200mm complete including taking down existing one complete all as directed. |
| 59 | M & L in replacement of warning board, written as \"Don\"t Switch On Men work on Line\" size (300x300) mm and 1.6mm thickness made up of MS Sheet and welded with suitable size of MS angle stand and hanging arrangement also including painting on both side with Post Office Red Colour make as per sample given by Engr-in-Charge |
| 60 | Labour for tree branch cutting of high rise trees, overhanging/interferences to the Two/Four Pole Structure GODS (size of tree branch approx 80 mm to 300 mm dia and 5 to 8 mtr long) without damages to the Two/Four Pole Structure/GODs etc including thrown away the same at least100 Mtr away from the Sub Stn Yard complete all as directed Note Suitable arrangement i.e. ladder, scafolding or any other working platform required for climbing on high rise trees for carryout said work is the responsibility of vendor/contractor and the rates are deemed to be included in this quoted rate. |
| 61 | S & F in replacement of 11 KV CT Ratio 150/5 Amp (Current Transformer), Nominal system voltage (KV rms): 11 KV, frequency 50 Hz, Rated output (VA burden): 10 VA, Class of accuracy: 0.5S, Resin Cast, Ring Type CT, Termination S1 & S2 shall be clearly marked including all required control wiring and dismantling of 11 KV cable by taking proper shutdown with all safety aspects of any size and re-fixing it after installation of CT\"s complete all as directed by Engr-in-Charge |
