Tender For Repair/Maint/Replacemnt Of External Electric Supply Network Ht Cable, Distribution System Vcbs , Rmus, Distribution Transformer And Other Connected Works At Af Stn Purnea Under Age(I)(Af) Purnea
Tender Value
14.75 Lakhs
Estimated cost
Bid Submission
01 Aug 2026
20 days left
EMD
29500
Bank guarantee accepted
Document Fee
500
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Purnia → Bihar
EMD Exemption
Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender for Repair/Maint/Replacemnt Of External Electric Supply Network Ht Cable, Distribution System Vcbs , Rmus, Distribution Transformer And Other Connected Works At Af Stn Purnea Under Age(I)(Af) Purnea
BOQ
| Sl. No. | Item Description |
| 1 | M & L for disconnecting and taking out HT VCB/RMUs panel of capacity 400/630Amp, 350MVA (MES No. & Location as Per Appx 'A' Attached) and to carry out following Periodical Maintenance(i) Overhauling of Spring charge unit including cleaning & removing of scales, soot or any hydroscopic layer accumalated on copper/aluminium bus bar using proper chemical cleaning reagents like CRCs (ii) Checking nuts,bolts, make break operation both mechanically and electricaly smooth including greasing of all moving/ fixed contact,nut & bolts (iii) Checking contact resistance, Internal control wiring, repairing/replacing heating coil removing moisture for all the feeders, (iv) Servicing of Spout insulators safety shutter for effective covering by automatically open/close while draw in/draw out operations, Checking and tightening control wiring and rectifying the defects if any.(v) cheking of earth fault and over current relays testing of relays with the help of relay testing kit (boosting Kit) and resetting of relays as per desire load current reconnecting the cables ,including calibaration of relays.(vi) Checking of tension spring and adjusting for proper tripping and functioning and replacement of U/S parts if required and testing complete for tripping all as directed by Engineer-in-Charge.(Note: Spares required for replacement will be paid and measured separately). |
| 2 | M & L for replacement of under mentioned unserviceable items to be incorporated against item No. 1 :-LED Indicator lamp of voltage Range : 110A - 110 VAC110D - 110 VDC240A - 240 VAC220D - 220 VDC |
| 3 | S&F in repair/replacement of spring Charging Motor suitable of 11 KV VCB 110 V-230 Volt AC supply for the opening and closing of contacts complete all as per sample at site and directed. Make- ABB,Siemens,CGL,Bhel |
| 4 | S&F in repair/replacement of vaccum intrupter bottle as per existing capacity of VCB 110 V-230 Volt AC supply for the opening and closing of contacts complete all as per sample at site and directed. |
| 5 | S&F in repair/replacement of digital Voltmeter (0 to 12 KV size 96x96 mm class 0.5, PTR 11000/rt3/110/rt3 complete all as specified and directed. |
| 6 | Supply and fix three phase over current and earth fault auxillary relay Suitable for CT Secondary 1 Amps or 5 Amps,Aux Supply 77-250V DC/AC (230VAC) suitable for existing breakers including taking down old U/ S relay make: Ashida/Crompton/Ariva or equivalent |
| 7 | M & L for Painting of transformer complete incl conservator tanks, fins etc with two coats of smoke grey synthetic enamel paint all as directed & shown by Engineer-in-Charge after preperataion of surface by cleaning agents by spray painting machine & writing MES No, SM Nos, capacity, Serial No, date of dehydration etc of follwing capacity :- |
| 8 | Transformer capacity up to 250 KVA |
| 9 | Transformer capacity above 250 KVA upto 500 KVA |
| 10 | Material and labour for Earthing in replacement with galvanised steel earth plate electrode 600x600x6mm thick burried directly in ground, earth pit not less than 2.25mtr deep below ground level with top edge of the plate not less than 1.5mtr below normal ground level connected to GI earth strip of 32x6mm by means of nuts,bolts, checking nuts, washers of galvanised iron or steel all as shown in electrical plate No.3 of MES SSR part-I connected to earthing test point including excavation/earth work in any type of strata, watering pipe with funnel, PCC chamber with PCC cover slab without GI protection pipe all as specified and directed by Engr-in-Charge. |
| 11 | S&F in replacementfor Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required for 32x6 galvanised iron strip using porcelain clit/post insulators including GI protection pipe of suitable size , complete all as specified and directed. |
| 12 | Disconnecting the distribution transformers outdoor / indoor type from HT/ LT system and opening carefully at site only by draining out transformer oil upto HT/LT boxes for rectifying the leakage by replacing the unserviceable spare parts of capacity 25 to 500 KVA transformer, refilling the transformer oil and complete assembling after repairs including testing for any oil leakages and connecting the HT/ LT system after the leakages have been rectified and tested on available electric load.Note :- Defective parts replaced will be measured and paid separately as \\"Supply only\\" under respective items here in after. |
| 13 | Supply only LT bushings with brass studs of existing specification. |
| 14 | Supply only top cover gasket set. |
| 15 | Supply only radiator flanged gasket 6 mm thick. |
| 16 | Supply only HT bushing with studs 11 KV of existing specification. |
| 17 | Supply and fix in replacement expulsion vent diaphragm of suitable size to match with the existing. |
| 18 | Supply and fix in replacement of breather assembly transparent plastic body with top and bottom portion pressed with metallic cover, filled with silica gel blue in colour and suitable for fixing on existing pipe of size 15/20/25 mm dia with suitable reducers/connectors etc as per site requirement /capacity of transformer. Note :- Rate quoted shall be deemed to include the cost of modification if any required to fix on existing MS Pipe. |
| 19 | M&L for taking down transformer oil level indicator assembly from conservator tank of transformer upto 500 KVA capacity from position for making visibility of oil level by lowering oil level in conservator including cleaning thouroughly, replacement of gasket and acrylic sheet, reassembling in position, refilling the removed oil all as specified and directed by Engineer-in-Charge. |
| 20 | Filtration & de hydration of transformer oil to achieve the test results as per IE rules with filtration plant including topping up of transformer oil.Note : a) the filtration of the transformer oil is to be carried out at different sub stations of the areab) the report before filtration & after filtration to be submitted by contractor in the approved format by licensed agent.c) the filtration is to be carried out on line ie without switching off supply.d) Transformer oil for topping up will be measured under respective item of Sch A. |
| 21 | Supply only Transformer oil confirming to IS 335 Std for topping up in distribution transformer duly filtrated under respective item of Sch A Make Power Oil/ Savita Oil or equivalent approved make. |
| 22 | M&L for earthing with copper earth plate electrode 600 x 600 x 3.15 mm thick burried directly in ground vertically to a depth of not less than 2.25 mtr below ground level connected to copper strip of size 20 x 3 mm as earthing lead means of nut, bolts and washers made out of brass and 40 mm dia GI pipe \\"light grade\\" for protection of earth lead and connected to contoll board or main switch or as directed by Engr -in-Charge including earthing pit in PCC (1:3:6) type C1 pre-cast cover RCC cover lab of size 300 x 300 x 100 mm with one handle made out of 8 mm dia round bar 20 mm dia GI pipe light grade for watering funnels , wire mesh and provided charcoal or coke of alternative layers of 15 cm including necessary earth work complete shown in electrical plated No 3 and tesing complete. NOTE : The earthing pit should be provided with proper earth pit and pit cover. Pit cover should be painted with synthetic enamel paint of approved colour and pit number to be marked on a GI plate above 45 cm from GL as per colour code followed in AF Station. |
| 23 | S&F in replacement for Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required for 20x3 copper strip using porcelain clit/post insulator including brazing if required & GI protection pipe of suitable size complete all as specified and directed. |
| 24 | M&L for disconnecting electrical connections from HT / LT terminals and earthing connections of faulty double copper wound, oil cooled transformer of capacity 100-250 KVA from existing substation at domestic & technical area transporting from site to workshop for repair / replacement by dismantling carefully and removing faulty / winding, drain out oil in barrel for reuse, rewinding including re-insulation of HT/LT coils with super enameled copper wire with equal gauge of existing copper wire, cleaning of core / tank, changing air breather assembly with pipe, . oil level indicator, defective HT/LT bushing with terminal connection and reinstallation with complete connection as required and directed by engr-in - charge.The repairs to the Transformer shall include :- Please Enable Macros to View BoQ information |
| 25 | M&L for disconnecting electrical connections from HT / LT terminals and earthing connections of faulty double copper wound, oil cooled transformer of capacity 100-250 KVA from existing substation at domestic & technical area transporting from site to workshop for repair / replacement by dismantling carefully and removing faulty / winding, drain out oil in barrel for reuse, rewinding including re-insulation of HT/LT coils with super enameled copper wire with equal gauge of existing copper wire, cleaning of core / tank, changing air breather assembly with pipe, . oil level indicator, defective HT/LT bushing with terminal connection and reinstallation with complete connection as required and directed by engr-in - charge.The repairs to the Transformer shall include :- Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Jul 11, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedAug 01, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 20 daysAug 04, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 23 daysTender Documents
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