REPAIR/MAINT OF RMUS DISTRIBUTION TRANSFORMERS, EXTERNAL ELECTRICAL DISTRIBUTION SYSTEM INCLUDING REPAIR/CALIBRATION OF RELAYS, METERS AND OTHER ALLIED WORKS AT INS EKSILA UNDER AGE E/M NO-II OF GE(U-I) (V)

Amount

M&L for disconnecting carefully electrical connection from both HT/ LT (primary & secondary) sides of the transformer, keeping them at safe side and taking out the but transformer/Voltage stabiliser indoor/ outdoor type of capacity 600 kVA to 1600 kVA, 11 KV/ 0.433 KV, step down of any make for carrying out complete overhauling which shall comprise of the following:-

a) M&L for lifting, transporting, handling, the transformer to workshop and opening top cover of the transformer by unscrewing nuts, bolts, washers etc. including disconnecting core assembly from HT/ LT bushing and lifting the same gently and taking out from the shell (container/ body) of the transformer.

b) M&L for draining out transformer oil from the above said transformer in the suitable capacity of container /drums and keeping it in safe custody for reuse.

c) M&L for cleaning the transformer body from inside, removing deposited dirt/ sludge/ foreign particles etc. from the bottom/ body of the transformer and drying up the shell from inside before refilling of the transformer oil.

d) M&L for cleaning and washing thoroughly core and windings of the transformer by hosing down with clean dry oil conforming to IS 335/1983, removing deposited dirt/sludge/foreign particles from the windings/ core, thorough inspection of windings, providing insulations to leads and terminals, heating/ drying/ baking complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc. all as directed by Engr-in- charge.

e) Lifting and refixing core assembly inside the transformer shell gently and carefully, connecting primary/ secondary/ Neutral connections to the bushings assembly, fixing of tap change over including tightening of nuts, bolts, washers of the core to reduce humming noise all as directed.

f) Refilling the filtered transformer oil in the shell of transformer complete.

g) Refixing the top cover including replacement of cork sheet/ gasket 8mm thick, tightening of nuts/ bolts/ washers etc. and replacement of breather with silica gel crystal type all as directed by Engr-in charge

h) Lifting/ shifting to the place from where removed or to any location as directed and re-installing the transformer including connecting primary/ secondary/ neutral connections etc. all as directed by Engr-in-Charge.

j) The inspection of transformer shall involve:- i) Checking of all clamps, nuts, bolts including core bolts & cover fixing bolts. Ii) Checking all brazings, joints, tap heads and connection joints. iii) Checking all jumpers, terminations/ connections inside the transformer. iv) Checking the Buchholtz relay/ conservator MOG if any. v) Painting of transformer complete with two coats of synthetic enamel paint externally transformer shell complete all as directed by Engr-in-Charge. (vi) Inspection of tap changer, checking the moving and fixed contacts for contact wear and connection to winding.

k) Conducting the tests on core and windings as per IS like ratio, magnetic imbalance, short circuit etc. in presence of Engr-in-Charge and test results shall be signed both by the contractor and Engineer -in-Charge and kept on record.

Note:- (i) Any damage to insulators/ bushes/ windings etc. while in the custody of the contractor shall be made good at no extra cost to Department. The serviceability of the transformer shall be checked and confirmed by the contractor before taking into his custody. (ii) M&L for rewinding/ re-insulation of HT/ LT (primary/ secondary) coils, bushes, studs, Transformer oil,cable box, replacement of buchholtz relay/ MOG if any etc will be measured and paid separately.

All as per Item No. 1 herein before but but transformer/Voltage stabiliser indoor/ outdoor type of capacity up to 500 kVA

Filtration of transformer oil of transformers installed at various locations to achieve di-electric strength not less than 60 KV at 2.5mm gap as per relevant IS with portable filtration plant, testing of the oil for the di-electric strength before filtration and after filtration complete all as directed by the Engineer-in-Charge.

Supply and topping up of transformer oil with di-electric strength not less than 60 KV in to the conservator tank/ body tank of the transformer/ OCB/ FRMUs etc at various locations complete all as directed by the Engineer-in-Charge. [Make: Poweroil/ Transol/ Sabitha Chemicals]

M&L for rewinding of distribution (HT/LT) transformers of capacity (50 KVA to 1000KVA) / type by winding the defective coils with new copper wire as per I.S. of same gauge and existing size together with new insulated materials / bracings before placing in to the transformer and assembling the coil with new insulation and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as directed. [Note: M&L for re-insulation of serviceable coils will be measured & paid separately under relevant items.]

M&L for rewinding of distribution (HT/LT) transformers of capacity (1100 KVA to 1600 KVA)/ type by winding the defective coils with new copper wire as per I.S. of same gauge and existing size together with new insulated materials/ bracings before placing in to the transformer and assembling the coil with new insulation and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as directed. [Note: M&L for re-insulation of serviceable coils will be measured & paid separately under relevant items.]

M&L for re-insulating windings of HT/ LT distribution transformers of capacity ( 50 KVA to 1600 KVA) / size/ type by strip opening of HT/ LT coils (i.e. Primary/ secondary coils) from core assembly safely, unwinding the HT/ LT coils (i.e. Primary/ secondary coils) complete, removing the old defective insulation paper and replacing with new DPC insulation to the copper conductor, re-varnishing of the windings with super varnish including heating/ drying/ backing complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc. all as per IS 1986-87 and as directed by Engr-in- charge.

Disconnecting the HT/LT connections of following transformers i.e (Bus duct / Cable bunch) keeping all the cables out from the HT/LT sides, physically checking the transformer for healthyness, performing the transformer tests like Meggar test, Ratio Test, Magnetic Balance test and short circuit tests for checking the condition of transformer complete and test results shall be submitted by the contractor. Note:- (i) If the transsformer found satisfactory then HT/LT connections shall be done by the contractor and has to charge the transformer. (ii) If the transformer fails in these tests then the contractor has to shift the transformer for winding /overhauling. (iii) Cost of Transportation / winding / overhauling is exclusive of rate quoted by the contractor.

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

M&L for replacement of Silica gel breather assembly complete with breather unit and silicagel including connecting with proper necessary gaskets if necessary, including removing the unserviceable breather assembly of following transformers .

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

Supply and filling Silica gel to the transformer breather of transformer including removing the unserveiceable silica gel

M&L for replacement of Conservator tank complete unit and including connecting with proper necessary gaskets if necessary, including removing the unserviceable Conservator tank of following transformers .

(a) 600 kVA to 1600 kVA

(b) Up to 500 kVA

M&L for replacement gun metal drain valves of transformers of following capacities including dismantling old one. MAKE :- UPADHYAY/ LEADER/ ZOLOTO

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

Supply and fix in repairs off load tap changer assembly suitable for any make with 7 tapping position including opening top cover, conservator etc of following transformers .

(a) 600 kVA to 1600kVA

(b) up to 500 KVA

Supply and replacement of (WTI) Winding Temperature Indicator of following distribution transformers including dismantling old one

(a) 600 kVA to 1600kVA

(b) up to 500 KVA

Supply only LT Bushings made out Porcelain and suitable length/size all as per existing, complete the following capacity distribution transformers of any make/size/type all as directed including dismatling old one.

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

Supply only HT Bushings made out Porcelain and suitable length/size all as per existing, complete the following capacity distribution transformers of any make/size/type all as directed including dismatling old one.

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

Supply only LT Bushing rod made out of Brass/Copper with threading and suitable length/size all as per existing metal parts / bolts etc, complete the following capacity distribution transformers of any make/size/type all as directed including dismatling old one.

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

Supply only HT Bushing rod made out of Brass/Copper with threading and suitable length/size all as per existing including metal parts / bolts etc, complete the following capacity distribution transformers of any make/size/type all as directed including dismatling old one.

(a) 600 kVA to 1600 kVA

(b) Up to 500 kVA

M&L for replacement of (OTI) Oil Temperature indicator of following distribution transformers including dismantling old one.

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

M&L for replacement of Drain plugs to valves/conservator caps of the sizes 3/4", 1", 1.5" valves and plugs of the following capacity distribution transformers of any make/size/type all as directed including dismatling old one.

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

M&L for replacement of Oil gauge glass with gaskets of the following capacity distribution transformers of any make/size/type all as directed including dismatling old one.

(a) 600 kVA to 1600 kVA

(b) Up to 500 kVA

M&L for preparation of old painted surfaces of transformers with coarse cloth/ brush and painting throughout externally on exposed surfaces with two coats of smoke grey colour synthetic enamel paint including writing of transformer details on plinth in white enamel paint on black enamel paint back ground complete including one coat of white wash for base foundation all as specified and directed by Engineer-in-charge for the following capacity in-door/ out-door type transformer:-

(a) 600 kVA to 1600 kVA

(b) up to 500 kVA

Clearing of bushes/small plants upto root level around and surroundings areas E/M installations (i.e Outdoor-substation yards, & Misc E/M installations etc) including surface dressing n.exc 15 cm deep and removing debris to a distance n.exc 50m complete all as directed

Excavation in trenches n.exc 1.5 m wide and not exc 1.5 m depth and getting out in soft / loose soil complete all as specified and directed.

Returning and filling in of excavated material any type including spreading, levelling, watering and well ramming in layers not exceeding 25 cm each complete all as specified and directed.

Removal of surplus excavated material of any type to a distance not exceeding 50 m and depositing where directed at a level not exc. 1.5 m bove the starting point complete all as specified and directed.

M&L for sand cushioning / sand covering for underground cable protection complete all as specified. Note: Punned thickness shall only be measured and paid.

Supplying and laying sub-class 'B' bricks of old size (23 X11 X7cm ) laid along alignment of cable as protection to cable in trenches complete all as specified and directed by Engineer-in-Charge

M&L for GI pipe light grade 100 mm dia for cable protection on road crossings /plinth protection with fixed to the pole wall etc. suitable fittings for cable protection .

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable for outdoor end termination heat shrinkable type joint complete with jointing material and accessories suitable for size 3 core 120 to 185 Sqmm including testing after jointing complete all as directed . Make: M-Seal/ 3M/ Raychem/ Denson

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armored aluminium conductor cable of size 120 to 185 Sqmm including testing after jointing complete all as directed . Make: M-Seal/ 3M/ Raychem/ Denson

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable for indoor end termination heat shrinkable type joint complete with jointing material and accessories suitable for size 3 core 240 Sqmm including testing after jointing complete all as directed . Make: M-Seal/ 3M/ Raychem/ Denson

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armored aluminium conductor cable of size 240 Sqmm including testing after jointing complete all as directed . Make: M-Seal/ 3M/ Raychem/ Denson

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable for indoor end termination heat shrinkable type joint complete with jointing material and accessories suitable for size 3 core 120 Sqmm to 185 Sqmm including testing after jointing complete all as directed . Make: M-Seal/ 3M/ Raychem/ Denson.Make: M-Seal/ 3M/ Raychem/ Denson

S&L XLPE insulated,screened, PVC bedded galvanised steel strip or wire armoured ,electric power cables heavy duty with aluminium conductor, 11000 Volts grade ( earthed) of size 3 core 185 Sqmm complete in trenches/ ducts/ on pole etc complete all as directed . Make: Universal/ Nicco/ Polycab/Havells

S&L XLPE insulated,screened, PVC bedded galvanised steel strip or wire armoured ,electric power cables heavy duty with aluminium conductor, 11000 Volts grade ( earthed) of size 3 core 240 Sqmm complete in trenches/ ducts/ on pole etc complete all as directed . Make: Universal/ Nicco/ Polycab/Havells

M&L for detecting HT 11KV UG cable faults located in any stretch/ depth with sophisticated cable fault locator consisting of microprocessor based pre-locator system, HV surge generator, fault pin point surge wave reciever, cable indentification instrument , cable tracer for exact location of under ground cable routes. Note: The rate quoted deemed to be inclusive of transportation of equipment and charges for service engineer . The fault locator will be provided by the contractor for operation

Servicing, Inspecting, checking, cleaning by using of blower, Lubrication , greasing and carrying out preventive maintanance of RMU capacity 11 KV, 250/350 MVA and RMU in serviceable condition, testing and commissioning all as specified and as directed by the Engineer-in-Charge.

Notes: (i) The rate quoted shall be deemed to include for necessary T&P, nuts, bolts, washers, gasket, insulation tape, compound, painting of RMU panels with approved colour including lettering details all as per exisitng etc.

Inspection, testing & servicing, overhauling of HT 11 KV Switch gear and VCBs of capacity 630 to 800 Amps, 11 KV 250 / 350 MVA carried out through Authorised CEIG Licenced agency and comprising of the following all as directed by Eng-in- charge :- (a) Preliminary inspection of 11 KV MV Switch gear for any defects.

(b)Testing of CTs:- (i) IR test (ii) Ratio test (iii) Winding resistance test

(c) Testing of PTs:- (i) IR test (ii) Ratio test (iii) Polarity test.

(d) Servicing on MV Switch gear panels :- (i) Cleaning panel (ii) checking the condition of support insulators and other accessories. (iii) IR test (iv) HV test.

(e) Servicing on VCBs :- (i) IR test (ii) Timing test. (iii) CRM test (iv) HV test (f) Over hauling of breakers for proper functionalling (g) Replacement of minor spares.

Notes: (i)The servicing includes for bus bar duct chamber, cable alleys and connecting accessories (ii) The rate quoted shall be deemed to include for necessary T&P, nuts, bolts, washers, gasket, insulation tape, compound, painting of VCB panels with approved colour including lettering details all as per existing etc. to put in to the VCBs and panels in serviceable condition, testing and commissioning all as specified and as directed by the Engineer-in-Charge. (iii) Major spares like Breaker bushings, vacuum interrupter assly, bus bar spout, bus bar spout connections, circuit spout/circuit spout connections/buffer fixed contacts, moving contacts, tank assly/barriers, solenoid spares, dependent/spring mechanism/ motor mechanism, trip unit etc. will be measured and paid separately under relevant items of Schedule 'A'. However the rate quoted shall be deemed to include for any other minor spares require replacement. (iv)Servicing shall be carried out through authorised OEM service personal only and test report shall be submitted in duplicate. (v) Required new components will be measured and paid separately under relevant items.

Supply & fixing closing coil assembly 110 V DC to Schneider make 11 KV VCB incl necessary connection testing complete including dismantling taking down unserviceable one complete all as specified and directed. Make- Schneider, Part No- ECO39SN134900FN

Supply and fixing tripping coil 110 V DC to Schneider make 11 KV VCB incl necessary connection testing complete including dismantling taking down unserviceable one all as specified and directed. Make- Schneider, Part No- ECO39SN134100FN

Supply and fix including dismantling taking out unserviceable vacuum interrupter of suitable for VCB of capacity 2500 Amps all as specified and directed. Make-Schneider. Part No-VSLVG4002-01

Supply and fix including dismantling taking out unserviceable Breaker Nylon Wheel, For 800A to 2500A Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider, Part No-MVIA00054-01

Supply and fix including dismantling taking out unserviceable spring charging Universal motor with gear box 220 V AC For 800 A to 2500 A Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider, Part No-MVIJOO157-02

Supply and fix including dismantling taking out unserviceable Release Lever (Nylon ) For 800A to 1600A Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider , Part No- MVIJ00010-01

Supply and fix including dismantling taking out unserviceable Buffer (For Opening Spring ) For 800A to 1600A Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider, Part No- MVIJ000980-1

Supply and fix including dismantling taking out unserviceable Buffer (For Closing Spring ) For 800A to 1600A Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider, Part No- MVIJ00056-01

Supply and fix including dismantling taking out unserviceable Rectifier unit (Monoblock) for spring charging motor For 800A to 1600A Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider, Part No- ERC-A-A00DC-001

Supply and fixing of Thermostat and Hygrostat in place of unserviceable damaged space heater, 230V AC supply inside 11 KV HT VCB, cable chamber including dismantling & necessary connection, testing complete all as specified and directed.

Supply and fix including dismantling taking out unserviceable Service/Test Position Limit Switch 1NO+1NC For 800A to 1600A Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider, Part No- ESW-B-AAA00-001

S&F multifunctional meter with LED display, accuracy class-1, e- navigator, including dismantling taking down unserviceable one and connection, programming, testing complete all as specified and directed. Make- Elmeasure , L&T , Schneider

Supply and fix including dismantling taking out unserviceable Isolating Contact For 800A to 1600A Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider, Part No- MVIK00190-01

Supply and fix single (Red-Blue) phase bus bar spout suitable for 800 Amps to 1250 Amps VCB of Make Schneider Model No MEP-39- 32185 complete all as specified and directed.

Supply and fix single phase bus bar suitable spout for 800 Amps to 1250 Amps VCB . Make Schneider Model No MEP-39-32186 complete all as specified and directed.

Supply and fix Drive Beam suitable for 11 KV VCB 800 to 2000 Amps. Make Schneider Model No MCS27S0298700PN complete all as specified and directed.

Supply and fix Epoxy Body suitable for 11 KV VCB up to 1250 Amps. Make Schneider Model No MEP3953022000FN complete all as specified and directed.

Supply and fix Drive Rod assembly with contact block VG2 suitable for 11 KV VCB up to 1250 Amps. Make Schneider complete all as specified and directed.

Supply and fix CT Spout suitable for VCB 800 to 2500 Amps 25 Ka chamber insulating bus support epoxy insulator of dia 95mm and 125mm length complete all as specified and directed. Make Schneider

M&L for setting of 3 phase IED of any type/Make from 11kV HT panel, cleaning the contacts , IED configuration , Calibration & Testing of all the measuring & protection devices viz., CTs, Relays and Meters at site. Testing of all the trip functions of the relays after final current settings by simulating fault current by CT secondary injection test set , checking of current transformer , rectification of defects in control wiring for proper tripping of CB during actual system fault conduction through relay & Tripping coil. Adjustment / setting to plug and time multiplier settings of IED to achieve the discrimination in tripping , tune/synchronies upstream breaker relay settings-installation of relay, testing & commissioning etc. complete all as specified and as directed.

Feeder wise Relay co-ordinations: M&L for Collecting necessary required data & peak load details from IED of any type/Make from 11kV HT panel , Transformer full load details during peak hours. Relay Setting Calculations & Co-Ordination Study. Unit Protection Setting of Transformers. Feeder wise settings has to be furnished & Report with Firm Recommendations to be submitted Down Stream Power distribution (Complete 11 KV system) overall co-ordinations of time need to be achieved. Adjustment / setting to plug and time multiplier settings of IED complete in all as specified and as directed.

Maintenance, servicing, Buffing/cleaning, Electroplating of copper Busbar in busbar chamber of each VCB panel including connecting bus bar from CT to main Bus bar & spout. servicing of support insulator by clean cloth and hot air blower/vacuum cleaner, checking for any loose contact, refixing of all nuts & bolts by Stainless Steel , refixing all covers , replacement of defective bus spout complete all as specified and directed Note :- Required new components will be measured and paid separately under relevant items.

M&L for applying Si-COAT 570 RTV Silicone High Voltage Insulator Coating solution using an GRACO Mark IV Airless Sprayer to the total VCB panel inside body along with busbars and re-connection of all existing cables, extended bus bars, testing complete all as specified and directed. Make:- CSL Silicones Inc. canada

Supply and fixing Resin Cast Indoor CT dual core, CT ratio- 300/150/5A-5A-1A For 800A , 11 KV VCB panel complete all as specified and directed.

M&L for maintenance/servicing of PT unit 11KV / 110 V by disconnecting and taking out from panel mounted position, checking & cleaning of fixed and moving contact points, cleaning/ decarbonising of bus bar connections, resin cast PTs using hot blower, CTC solution, applying backlot (Red) solution to the epoxy PT body, tightening of all nuts, bolts, washers, and refixing the same PT to original position, testing complete all as specified and directed.

M&L for rectification of faults and retrofit of electrical circuit of 11 KV VCB with suitable IED's by checking CT/PT healthiness , proper programming of multifunctional meters and replacement of defective components & wiring with FRLSH multistrand PVC insulated copper conductor 1100 volts grade as per existing size of wire complete all as specified and directed Note :- Required new components will be measured and paid separately under relevant items.

Supply , install ,Testing , Commissioming of Numerical feeder protection relay 50/51N (Earth over current),67P (3Ph directional over current),67N (Earth fault directional over current), 51V (Voltage controlled over current), 37 (3Ph under current),46 (Negative Phase sequence over current),59N (Residual over voltage),32 (Directional power protection under/over active/Reactive power),81 (Under over over Frequency ), 49 (Thermal Overload),79 (Auto resue),50BF (Circuit breaker failure direction),Cold pickup,Inrush blocking including taking down old relay complete all as specified and directed by Engr-in Charge.Relay will be on Modbus Protocol.(Make:- Schneider of Model Micom P-127 protection relay, 110V, 5A, type-BAOZ112Ca1 or its equivalent in ABB/SEIMENS)

Supply and fixing High Speed Master Trip Relay

Supply and fixing the following for METERING:

Supply and fixing the INDICATION LAMPS for C.B. ON/OFF/TRIP/Trip Circuit Healthy and Unhealthy/Spring Charged

Supply and fixing the following for CONTROL SWITCHES & Control Wiring

(a) T‐N‐C Switch (Breaker Control Switch)

(b) Trip Circuit Healthy Push Button

(c) Control wiring with appropriate colours

(d) Local Remote switch

S&F of transformer HT Terminals connector bushing boots of suitable length/suitable size for existing distribution transformers of any make/size/type/capacity all as directed including dismantling & refixing of HT cable

S&F of monoplast putty for sealing HT cable entry side gaps in HT/LT panels transformers cable entry box of suitable length /size all as directed including dismantling & refixing of HT cable side panel doors.

S&F of PU Foam insulation sealant spray HT cable entry bottom side gaps to arrest rat/insects / reptiles entry to HT/LT panels all as directed by Engineer-in-charge including dismantling & refixing of HT cable side panel doors