Tender For Repair / Maintenance Of 33 / 11 Kv Sub Stn/ Power Transformer Including Servicing Of Vcbs, Capacitor Bank And Allied Works At Rms.
Tender Value
40 Lakhs
Estimated cost
Bid Submission
06 Aug 2026
5 days left
EMD
80000
Bank guarantee accepted
Document Fee
500
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
dimapur → Nagaland
EMD Exemption
Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender For Repair / Maintenance Of 33 / 11 Kv Sub Stn/ Power Transformer Including Servicing Of Vcbs, Capacitor Bank And Allied Works At Rms.
BOQ
| Sl. No. | Item Description |
| 1 | Material and labour for servicing /testing of transformer circuit breaker, control panel including outdoor CT, PT and relays in control panel of outdoor SF 6 Gas Circuit Breaker of capacity 1250/800 Amps and rating 36 KV complete as details mentioned as under:-(a) Details of servicing of breaker :-(i) Checking of Closing/Tripping coil assembly(ii) Adjustment of mechanism if required.(iii) Clean the circuit breaker to remove dust and dirt. (iv) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts.(v) Visual check for rusted,wear/tear parts.(vi) Checking of spring charge mechanism(vii) Visual check for rust and deformation.(viii) Check for loosened bolts and nuts, broken spring washers and snap pins etc.(ix) Check for loosened connections, rust, damaged lead wires.(x) Checking of control circuit & tighten the connections if any.(xi) Check close & triping coil.(xii) Replacement of Dashpot/shock absorbers .(xiii) Replacement of carbon brush of spring charging motor(xiv) Cleaning of porcelain bushing(xv) Checking of limit switch etc(b) The following test shall be carried out:-(i) Primary Injection Test of outdoor CT / PT(ii) Closing & Opening Timing Test for all three poles. |
| 2 | (iii) IR Test with megger in open and closed condition.(iv) Contact resistance test for all three poles(v) Closing coil resistance(vi) Tripping coil resistance.(c) Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay :-(i) Over current and earth fault Relay(ii) Transformer diffrential relay(d) Testing of followig Aux relay(i) DC supply supervision relay.(ii) CB SF 6 gas pressure low.(iii) Master trip relay(iv) Main Buchholz trip (v) Buchholz OLTC Trip(vi) SPR & PRV trip.(vii) Winding temp high trip (viii) Oil temp high trip.(ix) Main Buchholz alarm(x) Winding temp High alarm(xi) Low Oil level alarm(xii) Oil temp high alarm Note:- (i) Certification of testing and calebration from OEM will be provided by the contranctor.(ii) New spare parts will be replaced by Genuine spare parts only as per OEM authorised/consultation.(iii) Servicing shall be carried by Rep/Tech of OEM. (iv) The spare parts reqd for repair/replacement shall be measured and paid as supply only under relavant items and fixing of the same is deemed to be inclusive in this Item. |
| 3 | Material and labour for servicing /testing of breaker/control panel including CT, PT and relays in control panel of VCB of capacity 1250 /800/630 Amps and rating 11 KV complete as details mentioned as under:-(a) Details of servicing of breaker :-(i) Adjustment of mechanism if required.(ii) Clean the circuit breaker to remove dust and dirt. The envelope of the vacuum interrupter and insulating materials shall be wiped with a clean cloth.(iii) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts.(iv) Visual check for rusted,wear/tear parts.(v) Check Spring Tension and pitting of the Cluster Contacts.(vi) Visual check for rust and deformation.(vii) Check for loosened bolts and nuts, broken spring washers and snap pins etc.(viii) Check for loosened connections, rust, damaged lead wires.(ix) Check whether the contacts are damaged by arcing.(x) Checking of control circuit & tighten the connections if any.(xi) Check close & trip coil.(xii) Checking of Jaw Contacts Conditions and repair/adjust.(xiii) Replace the jaw contacts,If required.(xiv) Improvement of resistance of epoxy insulator and epoxy body by applying post heated varnish.(xv) Replacement of Dashpot/shock absorbers . |
| 4 | (xvi) Replacement of carbon brush of spring charging motor(xvii) Checking, cleaning, tightening , testing the busbars incl bus chambers, CT/PT (xviii) Checking, cleaning, tightening , testing of support insulator, Spouts etc(b) The following test shall be carried out:-(i) Primary Injection Test of CT / PT(ii) Closing & Opening Timing Test for all three poles.(iii) IR Test with megger in open and closed condition.(iv) Contact resistance test for all three poles(v) Closing coil resistance(vi) Tripping coil resistance.(c) Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay :-(i) Over current and earth fault relay(d) Testing of followig Aux relay(i) DC Supply supervision relay.(ii) Master trip relayNotes:- (i) Certification of testing and calebration from OEM will be provided by the contranctor.(ii) New spare parts will be replaced by Genuine spare parts only as per OEM authorised/consultation.(iii) Servicing shall be carried by Rep/Tech of OEM. (iv) The spare parts reqd for repair/replacement shall be measured and paid as supply only under relavant items and fixing of the same is deemed to be inclusive in this Item. |
| 5 | Supply only big and small gear assembly with handle and bracket suitable for 11 KV HT VCB complete all as specified and as directed. |
| 6 | Supply only Anti pumping device suitable for 11 KV HT VCB complete all as specified and as directed. |
| 7 | Supply only Worm wheel with work shaft suitable for 11 KV HT VCB complete all as specified and as directed. |
| 8 | Supply only HRC fuse of existing sample suitable for 11 KV HT VCB complete all as specified and as directed. |
| 9 | Supply only voltmeter PT operated suitable for 11 KV HT VCB complete all as specified and as directed. |
| 10 | Supply only Ammeter CT operated suitable for 11 KV HT VCB complete all as specified and as directed. |
| 11 | Supply only under over voltage relay CGV 24C suitable for 11 KV HT VCB complete all as specified and as directed. |
| 12 | Supply only TNC switch suitable for 11 KV HT VCB complete all as specified and as directed. |
| 13 | Supply only trip circuit healthy push button suitable for 11 KV HT VCB complete all as specified and as directed. |
| 14 | Supply only ZZ limit switch suitable for 11 KV HT VCB complete all as specified and as directed. |
| 15 | Supply only over curent and earth fault relay CG 114N suitable for 11 KV HT VCB complete all as specified and as directed. |
| 16 | Supply only of set of isolating contact assy 630A suitable for 33 KV HT VCB complete all as specified and as directed. |
| 17 | Supply only of UPPER SUPPORT - 450025001 complete all as specified and as directed. |
| 18 | Supply only of LOWER SUPPORT complete all as specified and as directed. |
| 19 | Supply only of SPOUT BUSHING UP TO 1250A (1 SET-6 NOS) - 450088057 complete all as specified and as directed. |
| 20 | Supply only of SET OF 3 Nos. SPOUT BUSHING WITH CC PARTS (Contact Plug) UPPER 630/800 AMP complete all as specified and as directed. |
| 21 | Supply only of SET OF 3 Nos. SPOUT BUSHING WITH CC PARTS (Contact Plug) LOWER 630/800AMP complete all as specified and as directed. |
| 22 | Supply only of SPOUT BUSHING WITH CC PART FOR \\"R\\" ,\\"Y\\" & \\"B\\" PHASE LOWER 630A/800A complete all as specified and as directed. |
| 23 | Supply only of SPOUT BUSHING WITH CC PARTS UPPER 1600 AMP - UNIVAC- (SET OF 3 Nos) 450088032 + 450V5512Q complete all as specified and as directed. |
| 24 | Supply only of Emergency Push to Trip assembly for PANEL (Ref.- W.O. V6921) - TRIP CABLE complete all as specified and as directed. |
| 25 | Supply only of VI (3\\" Dia) Type WL 34599 M3+ complete all as specified and as directed. |
| 26 | Supply only of VI (4\\"Dia) Type VL 33379 -109 complete all as specified and as directed. |
| 27 | Supply only of MOTOR & GEAR ASLY 110V AC/DC UMG 14 TYPE (DELCO MAKE PMR-5) complete all as specified and as directed. |
| 28 | Supply only of HOLDING CATCH ASSEMBLY complete all as specified and as directed. |
| 29 | Supply only of PUSH BUTTON BRACKET ASSEMBLY complete all as specified and as directed. |
| 30 | Supply only of CHARGED/DISCHARGED INDICATOR ASSEMBLY complete all as specified and as directed. |
| 31 | Supply only of SPRING CHARGING HANDLE FOR HAND OPERATING suitable for 11 KV HT VCB complete all as specified and as directed. |
| 32 | Supply only of CLOSING SPRING ASSEMBLY suitable for 11 KV HT VCB complete all as specified and as directed. |
| 33 | Supply only of TRIPPING SPRING ASSEMBLY-450171005 (1SET-2NOS) suitable for 11 KV HT VCB complete all as specified and as directed. |
| 34 | Supply only of BREAKER POSITIONING LEVER WITH VCB FREE TO CLOSE/TRIP KNOB (ROLLER CAM SWITCH WITH RED KNOB 2 N/O) suitable for 11 KV HT VCB complete all as specified and as directed. |
| 35 | Supply only of Motor Bracket for Hand charge complete all as specified and as directed. |
| 36 | Supply only of Upper Terminal Plate Square (12mm Thick) complete all as specified and as directed. |
| 37 | Supply only of Lower Terminal Plate Square (12mm Thick) complete all as specified and as directed. |
| 38 | Supply only of POWER PACK (INPUT-230 VAC - OUTPUT-24 VDC) complete all as specified and as directed. |
| 39 | Supply only of 11kV INDOOR PT PRIMARY FUSE (3.15A) complete all as specified and as directed. |
| 40 | Supply only of BUTTERFLY SWITCH FOR MOTOR CUT-OFF complete all as specified and as directed. |
| 41 | Supply only of TIMER FOR MOTOR complete all as specified and as directed. |
| 42 | Supply only of TEST SERVICE LIMIT SWITCH complete all as specified and as directed. |
| 43 | Supply only of LED LAMP-RED, of SAP Code : 460232452D complete all as specified and as directed. |
| 44 | Supply only of LED LAMP-GREEN of SAP Code 460232453D complete all as specified and as directed. |
| 45 | Supply only of LED LAMP-BLUE of SAP code 460232456D complete all as specified and as directed. |
| 46 | Supply only of LED LAMP-AMBER of SAP Code 460232454D complete all as specified and as directed. |
| 47 | Supply only of LED LAMP-WHITE of SAP Code 460232457D complete all as specified and as directed. |
| 48 | Supply only of LED LAMP-YELLOW of SAP Code 460232460D complete all as specified and as directed. |
| 49 | Supply only of cast resin type 11 KV current ransformer having a ratio 100-50/5-5 Amp having protection core SP-10 burden of 15VA and metering core class 1.0 and burden of 15 VA breaking capacity 13.1 KV for 1.0 second complete all as specified and directed. |
| 50 | Repair/servicing of RMU 630/400 Amps 3 way to 5 way of any make by visual inspections, checks for physical damage, SF6 gas pressure, indicating lights, and clearance around the switchboard for smooth operation all as details below :-(a) Cleaning of RMU with air blower and removing dust particles.(b) Cleaning of insulating places of RMU by using CTC/CRC/Thinner as required and recommended.(c) Checking the arcing contact gap of vacuum intrupter if gap exceeds the permissible limit adjust as recommended.(d) Cleaning the main contacts to remove carbon or any other unwanted particles if visible.(e) Dismantling and cleaning the insulated surfaces and arc barrier with CTC and CRC.(f) Checking repair/replacement of electric wiring for electrical manual operation of panel including measuring IR value.(g) Checking all nuts, bolts springs, levers, latches, connectors etc and adjustment as record.(h) Cleaning of busbar spouts.(j) Checking of all moving parts for proper functioning of RMUs and adjustment as per mnufacturer recommendations. |
| 51 | (k) Replacement of contol wiring with FRLSH 1.5/2.5 sqmm flexible PVC stranded copper conductor cabl, unsheatherv 1100V grade.(l) Removal of old grease and re-greasing the same with recommended grease(m) Check condition of SIC Contacts, Checking condition and alignment of jaw Contact, Checking and proper tightening of hardware, Checking proper closing of all poles together, Checking of breaker tripping through push button, Checking and adjusting gap between hylam sheet and side plate. Checking motor operation in case of EDO.(n) Check the SF6 gas pressure level and take a photo of the gauge. Normal pressure is typically 1.4-1.8 bar @ 20°C(o) Checking of auxiliary contacts continuity proper change over, Checking presence of all circlipsNote: The spare parts reqd for repair/replacement shall be measured and paid as supply only under relavant items and fixing of the same is deemed to be inclusive in this Item. |
| 52 | Supply only Battery 12 Volt 7.2 AH to 8 AH as per existing of same model of complete all as specified and directed. |
| 53 | Supply only RMU push Button knob ON & OFF complete (external & internal) existing size/capacity and make complete all as specified and as directed. |
| 54 | Supply only RMU door socker complete existing size/capacity and make complete all as specified and as directed. |
| 55 | Supply and filling of SF6 Gas sutaible of RMU 3way to 5 way existing size/make/capacity including leakage check complete all as specifed and as directed. |
| 56 | Supply only RMU shunt trip Coil of existing size/capacity and make including necessary electrical and mechanical connection complete all as specified and as directed. |
| 57 | Supply only RMU shunt close Coil of existing size/capacity and make, including necessary electrical and mechanical connection complete all as specified and as directed. |
| 58 | M&L for Servicing & Repairs to Air-break switch (isolator) off load, rotating type, 33 KV, 800 Amps to 1250 Amps capacity, with proper alignment of isolator rotating blades, with fixed contact jaws, arcing horns, applying petroleum jelly to moving mechanism, cleaning and lubricating to isolator gear box assembly, tightening all nuts, bolts and clamps of jumpers etc, repairing to isolator gear box assembly and making in proper serviceable condition for smooth functioning, testing and commissioning on load complete all as specified and directed. |
| 59 | Supply and laying in replacement of XLPE UG cable PVC insulated,bedded armoured heavy duty electric contol cable 1100 volts grade with copper conductor of size 2.5 Sqmm 16 core in trenches or fixed on wall/floor/ pole complete all as spd and directed |
| 60 | Supply, installation testing and commissioning in replacement the relay module Micom P111(3 phase over current and earth fault relay) making necessary cutting in the existing panel and necessary control wiring FRLS of size not less than 2.5 Sqmm and providing Ferules for identification and necessary spares for fixing complete to the entire satisfaction of the Engr-in-Charge. |
| 61 | Maint and servicing of APFC pannels of capicity 640 KVAR 11 KV online and their components, cleaning complete with blower and removing of deposited carbon particals from the terminals, adjusting relays and other parts up to certain limit as required including taking down old U/S parts and Accesories and calibrated as all as specified and directed.Note: The spare parts reqd for repair/replacement shall be measured and paid as supply only under relavant item and fixing of the same is deemed to be inclusive in this Item. |
| 62 | Supply only high voltage HRC fuse of 100 Amps for capacitor bank complete all as specified and as directed. |
| 63 | Supply only high voltage HRC of 200 Amps fuse for capacitor bank complete all as specified and as directed. |
| 64 | M & L for ON load Centrifuging and dehydration including filteration and cleaning of transformer oil by dehydration machine of 33 KV transformer / Stn transformer at site and topping up deficient transformer oil including testing of samples before and after dehydration and filteration complete all as specified and directed.Notes :- (i) Deficient quantity of Transformer oil required for top up shall be measured and paid separately under item here-in -after as supply only.(ii) Test report of dielectric strength shall be recorded before and after dehydration process. Dielectric strength should be not less than 60 KV in 2.5 mm gap. |
| 65 | Supply only transformer oil of approved quality as per IS having dielectric strength of 45-60 KV in 2.5 mm gap for filling in transformer or for topping up as required complete all as specified and directed. |
| 66 | Material & labour for repair / overhauling/ Servicing of OLTC ( On load tap changer ) of 33KV/11KV Power transformer of capacities upto 6 MVA at site by carried out following work :-(a) Opening of top plate of OLTC.(b) Draining out of transformers oil from the OLTC. (c) Stoping of leakage of oil from main shaft of OLTC including replacement of oil seal and all gasket of OLTC.(d) Checking /servicing of moving and fixed contact of OLTC and resistence test of contact.(e) Flushing of OLTC assembly with hot new oil and removing of sludge.(f) Filling of new transformer oil in OLTC .(g) Tightening of all tapping leads and connections. (h) Refixing of top plate of OLTC in original position after overhauling.(i) Electrical testing of manual/auto operation of OLTC.Note :- Transformer oil as required shall be measured and paid separately under relevent itme as supply only. |
| 67 | Material & labour for repair /servicing of marshalling box panel of 33KV/11KV Power transformer of capacities upto 6 MVA including following :-(a) Testing & repair to control wiring.(b) Testing of OTI, WTI , meter matching with OTI, WTI indicator in control panel.(c) Replacement of burned fuse.(d) Repalacement of gaskets & locks including preparation of old painted surfaces of steel by brushing/cleaning stain, greasy spots with thinner etc complete all as specified and directeed. |
| 68 | Supply and Fixing in repairs of male/moving contact/ rotating blade of HDE copper silver plated of Air Brake, off load isolator switch, rotating type, 33 KV, 1250/800 Amps capacity with all fixing nuts, bolts etc complete all as specified and as directed. |
| 69 | Supply and Fixing in repairs of fixed contact/ rotating blade of HDE copper silver plated of Air Brake, off load isolator switch, rotating type, 33 KV, 1250/800 Amps capacity with all fixing nuts, bolts etc complete all as specified and as directed. |
| 70 | Supply and fixing of terminal pad for Air Brake, off load isolator switch, rotating type, 33 KV, 1250/800 Amps capacity complete all as specified and directed. |
| 71 | Supply and fixing of arching horn for Air Brake, off load isolator switch, rotating type, 33 KV, 1250/800 Amps capacity complete all as specified and directed. |
| 72 | Supply and Fixing in replacement of PG clamps aluminium cast alloy suitable for existing ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf for 33 KV yard/33 KV towers with GI nuts, boits etc complete all as specified and directed. |
| 73 | Supply and fixing in replacement of T-connector clamps, aluminium cast alloy suitable for existing ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf for 33 KV yard with GI nuts bolts complete all as specifed and directed. |
| 74 | Supply and fixing in replacement of CT/PT/Isolator /circuit breaker clamps aluminium cast alloy for both terminals suitable for ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf for 33 KV yard with GI nuts bolts complete all specified and directed. |
| 75 | Supply and fixing in replacement of dead end clamps aluminium cast alloy for both terminals suitable for ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf of 33 KV towers/yard with Ginuts bolts complete all as specified and directed. |
| 76 | Supply and fixing in replacement of damage triple tension disc insulators not less than 160 KN and hardware fitting and fixing in position including tighetning of bolts & nuts, complete after dismentling and lowering of damage conductor/disc insulator by taking tension of conductor on a separate arragement including opening & provinding of jumpers of 33 KV tension towers complete all as specified and as directed. |
| 77 | Supply and fixing in replacement of pin insulator with hardware fittings of 33 KV grade complete all as specified and directed. |
| 78 | Supply and fixing for replacement of aluminium jumper of length upto 2.5 mtr made of ACSR conductor of type Zebra/Dog/Goat/Panther/Wolf conductor with suitable size of aluminium lugs of 33 KV towers/ yard complete all as specified and directed. |
| 79 | Supply, install, testing of lightening arrestor expulsion type complete with all fitings, transmission class, discharge capacity 65 KA suitable for working voltage of 33 KV including all necessary fittings all as per IS-3070 Part-III and IEC 1994 including complete all as specified and as directed. Please Enable Macros to View BoQ information |
| 80 | Supply, install, testing of lightening arrestor expulsion type complete with all fitings, transmission class, discharge capacity 65 KA suitable for working voltage of 33 KV including all necessary fittings all as per IS-3070 Part-III and IEC 1994 including complete all as specified and as directed. Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Jul 16, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedAug 06, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 5 daysAug 13, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 12 daysTender Documents
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