REPAIR / MAINTENANCE 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) VISAKHAPATNAM

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 burst transformer/Voltage stabiliser indoor/ outdoor type of capacity 1000 KVA to 1600 KVA, 11 KV/ 0.433 KV, step down 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 back to the original location after complete overhauling. b) 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 bucholtz relay/ MOG if any etc will be measured and paid separately.

All as per Sl Item No. 1 here-in-before but transformer / Voltage stabiliser indoor / outdoor type of capacity up to 160 KVA to 250 KVA.

Filtration of transformer oil of transformers / FRMUs 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 into the conservator tank / body tank of the transformer / OCB / FRMUs etc at various locations complete all as directed by the Engineer-in-Charge. Make: Apar (Power Oil) / Savita (Transol) / Asian

M&L for rewinding of distribution (HT) transformers of capacity 160 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 rewinding of distribution (LT) transformers of capacity 160 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 160 to 1600 KVA 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 directed by Engr-in- charge.

Disconnection of the distrubution transformer of of capacity 1000 to 1600 KVA from HT and LT supply mains, removing of Bus duct and Bus bar, leakage arresting by draining out of oil after arrangement of necessary empty oil drums, buckets etc.,dismantling of top cover and acessories, dismantling of LT bushings by disconnecting leads / jumpers from inside, replacement of gaskets and oil seals and re fixing of the LT bushings, making internal and external connections, replacement of cover gasket and acessories, reassembling of acessories and cover, filling back of existing transformer oil complete and making cable connections and assesting for energising the transformer complete all as specified and as directed. Note: (i) The rate quoted shall include cost of materials like gaskets and oil seals and labour etc. (ii) Bushing and bushing rods shall be measured and paid separately.

All as per Sl item No. 8.00 but Transformer of capacity 160 to 250 KVA

Disconnecting the HT/LT connections of transformer of capacity 1000 to 1600 KVA 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 condition of transformer complete all as specified and as directed. Note:- (i) If the transformer 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.

All as per Sl item No. 10.00 but transformer of capacity 160 to 250 KVA

Shifting the Transformer of capacity 1000 to 1600 KVA from existing site to another site within 3 Km distance range by Dismantling of HT and LT cable connections, jumpers and busbars including LT busbar cable boxes and closing the transformers for loading into transporting vehicle with the help of crane, transportation to another site, unloading, cable connections both HT and LT, testing and commissioning complete all as specified and as directed.

All as per Sl item No. 12.00 but transformer of capacity 160 to 250 KVA

M&L for replacement of silica gel breather assembly complete for 1000 to 1600 KVA transformer as per existing with breather unit and silica gel including connecting with proper necessary gaskets if necessary & removing the unserviceable breather assembly complete all as specified and as directed.

All as per Sl item No. 14.00 but transformer of capacity 160 to 250 KVA

M&L for replacement of conservator tank complete unit of transformer of capacity 1000 to 1600 KVA as per existing and including connecting with proper necessary gaskets if necessary & removing the unserviceable Conservator tank complete all as specified and as directed.

All as per Sl item No. 16.00 but transformer of capacity 160 to 250 KVA

M&L for replacement of gun metal drain valves for transformer of capacity 1000 to 1600 KVA including dismantling old one complete all as specified and as directed. Make :- Upadhyay / Leader / Zoloto

All as per Sl item No. 18.00 but for transformer of capacity 160 to 250 KVA

S&F in repairs off load tap changer assembly suitable for transformer of capacity 1000 to 1600 KVA as per existing with 7 tapping position including opening top cover, conservator etc complete all as specified and as directed.

All as per Sl item No. 20.00 but suitable for transformer of capacity 160 to 250 KVA

Supply and replacement of WTI (Winding Temperature Indicator) suitable for distribution transformer of capacity 1000 to 1600 KVA as per existing including dismantling old one complete all as specified and as directed.

All as per Sl item No. 22.00 but suitable for transformer of capacity 160 to 250 KVA

Supply only LT bushings made out of porcelain, as per existing and suitable for distribution transformer of capacity 1000 to 1600 KVA including dismatling old one complete all as specified and as directed.

All as per Sl item No. 24.00 but suitable for transformer of capacity 160 to 250 KVA

Supply only HT bushings made out of porcelain, as per existing and suitable for distribution transformer of capacity 1000 to 1600 KVA including dismatling old one complete all as specified and as directed.

All as per Sl item No. 26.00 but suitable for transformer of capacity 160 to 250 KVA

Supply only LT bushings rod made out of copper with threading, as per existing and suitable for distribution transformer of capacity 1000 to 1600 KVA including dismatling old one complete all as specified and as directed.

All as per Sl item No. 28.00 but suitable for transformer of capacity 160 to 250 KVA

Supply only HT bushings rod made out of copper with threading, as per existing and suitable for distribution transformer of capacity 1000 to 1600 KVA including dismatling old one complete all as specified and as directed.

All as per Sl item No. 30.00 but suitable for transformer of capacity 160 to 250 KVA

M&L for replacement of OTI (Oil Temperature indicator) as per existing suitable for distribution transformers of capacity 1000 to 1600 KVA including dismantling old one complete all as specified and as directed.

All as per Sl item No. 32.00 but suitable for transformer of capacity 160 to 250 KVA

M&L for replacement of drain plug & valve of conservator tank of suitable sizes as per existing suitable for distribution transformers of capacity 1000 to 1600 KVA including dismatling old one complete all as specified and as directed.

All as per Sl item No. 34.00 but suitable for transformer of capacity 160 to 250 KVA

M&L for replacement of Oil gauge glass with gaskets as per existing suitable for distribution transformers of capacity 1000 to 1600 KVA including dismantling old one complete all as specified and as directed.

All as per Sl item No. 36.00 but suitable for transformer of capacity 160 to 250 KVA

M&L for preparation of old exposed painted surfaces of indoor / outdoor type transformer of capacity 1000 to 1600 KVA and painting the same with two coats of synthetic enamel paint including writing details of transformer on transformer plinth / base with white synthetic enamel paint on black synthetic enamel paint back ground complete & including one coat of white wash on exposed surface of transfomer plinth / base complete all as specified and as directed. Note :- Colour of paint shall be as decided by Engr-in-Charge. Make:- Jotun India Pvt Ltd / Apcolite (Asian) / Luxol (Berger) / Jenson & Nicholson Paints Ltd (Borolac) / Shalimar Paints Ltd (Superlac)

All as per Sl item No. 38.00 but for transformer of capacity 160 KVA to 250 KVA

Clearing away all bushes, small plants, grass, vegetation, saplings, shrubs, brushwood, undergrowth, roots upto root level including surface dressing n.exc 15 cm deep around and surroundings areas of E/M installations (i.e.Two Pole/ Four structures, outdoor-substation yards, pump house & Misc E/M installations etc) and removing rubbish / debris upto a distance of not less than 50 metres outside the periphery of the area under clearance complete all as directed.

Supply and laying hardcore of aggregate using 20mm graded crushed stone aggregate, deposited, spread and leveled in layers watered and rolled / rammed to a true surface in sub-station yards complete all as specified and directed. Note:- Thickness of aggregate shall be measured after compaction.

Excavation in trenches, not exc 1.5 m wide and not 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 all excavated material in soft / loose soil complete all as specified and directed.

Returning, filling in and including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick complete all as specified and as directed.

Removing of excavated surplus soil to a distance n. exc 50 m and depositing where directed at a level n. exc. 1.5 m above the starting point complete all as specified and directed.

M&L sand cushioning with clean and dry sand in trenches for protection of UG cable and including punning down complete all as specified and directed. Note:- Punned thickness shall only be measured and paid.

Supplying and laying un-reinforced precast concrete cable cover, class HV, Type 1, flat, of size 300mmx 180mm x 40mm, laid along alignment of cable as protection to cable in trenches complete all as specified and directed.

S&F 100 mm bore galvanised steel tubing, medium grade with necessary fittings, laid under road crossing, for cable protection complete all as specified and directed. Make - Tata / Jindal Steel / Surya Roshni Ltd. / Bhushan Power & Steel Ltd. / M/s APL Apollo Tubes Ltd

M&L cable jointing kit for 11 KV (Earthed) grade 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm for outdoor termination, heat shrink type joint complete with jointing material and accessories including taking down complete all as specified and directed. Make:- 3M / Denson / Raychem

All as per Sl. Item No. 48.00 above but for cable of size 240 to 300 Sqmm

M&L cable jointing kit for 11 KV (Earthed) grade 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm for straight through, heat shrink type joint complete with jointing material and accessories including taking down complete all as specified and directed. Make:- 3M / Denson / Raychem

All as per Sl. Item No. 50.00 above but for cable of size 240 to 300 Sqmm

Supply & laying XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts, Earthed, grade cross sectional area 185 Sqmm, 3 core, laid in trenches / duct / on pole including taking down complete all as specified and directed. Make :- Havells / KEI / Polycab / Gloster / Asian Cables / Finolex

All as per Sl. Item No. 52.00 above but for cable of size 240 sqmm x 3 Core

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 receiver, cable identification instrument , cable tracer for exact location of under ground cable routes complete all as directed. Note:- The rate quoted deemed to be inclusive of arrangement of necessary fault locator equipment, transportation of equipment& charges for service engineer.

Servicing, Inspecting, checking, cleaning by using of blower, lubrication, greasing and carrying out preventive maintanance of RMU of capacity 11 KV, 250 / 350 MVA including calibrating the relay by conducting secondary injection tests and RMU in serviceable condition, testing and commissioning all as specified and as directed by the Engineer-in-Charge. Notes: Unit rate quoted shall be deemed to include cost 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..

Supply & fixing of the following spare parts suitable for RMU of capacity 630 Amps & of Schneider make:-

Self powered relay with O/C, S/C, E/F protection. Relay should have a front USB port for laptop interface, LCD display,10 event records, 5 fault records, min 2 setting group and keypad for setting parameters for the relay

CT having Ratio 100-50 / 1-1A for Class - 1.0, 2.5VA for metering and Class 10 P10, 2.5VA for protection

Cable termination bushing suitable for upto 1 run 3 core x 185 Sq mm, XLPE cable

Cable termination cover boots (Push on type)

Phase indicator lamps (Red, Yellow and blue)

11KV/230V AC, 1KVA control transformer

Battery with & including battery charger, 12Ah, (I/P-230V AC, O/P - 24V DC) Make:- Exide / Amron / Luminous

Spring Charging motor

S&F danger notice plate of size 25 x 20 cm & 1.6mm thick mild steel sheet, vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size for HT including dismantling compete all as specified and as directed.

M&L earthing complete with galvanised steel earth plate electrode of size 600 x 600 x 6 mm thick buried directly in ground in vertical position (earth pit not less than 2.25 m deep below the normal ground level) with top edge of the earth plate not less than 1.5 m below normal ground level, connected to earth lead of galvanised iron strip 32 x 6 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel, all as shown in electrical plate No. 3 connected to earthing test point including dismantling complete all as specified and directed. Note:- The unit rate shall also include for earth work in any type of soil, PCC 1:3:6 type C1 chamber, RCC 1:1.5:3, type A1 cover slab, 50 mm thick reinforced with 8 mm dia TMT bar @ 140 mm C/C both ways, 10 mm dia plain bar lifting handle embedded in cover slab, 20 mm bore medium grade GI watering pipe, 40 mm bore GI light grade earth lead protection pipe, funnel, wire mesh, copper lugs, charcoal and common salt in alternate layer etc.

Disconnect and taking out IDMT/ Numeric/ Microprocessor based relay of any type & make from 11 KV HT panel at 11 KV Sub Stn MOV old, cleaning the contacts, calibrating the relay by conducting secondary injection tests, checking of current transformer, rectification of defects in control wiring for proper tripping of circuit breakers through CTs and relay and tripping coils, adjustment / setting to plug and time multiplier settings of the relay to achieve the discrimination in tripping, tune / synchronise upstream breaker relay settings, re-installation of relay, testing & commissioning etc complete all as specified and as directed. Note:- (i) Arrangement of necessary testing / calibration kits, testing equipments, tools etc. shall be done by contractor and cost of the same shalll deemed to be included in the unit rate quoted. (ii) Testing & tuning shall be carried out in the presence of representative of the accepting officer to the entire satisfaction of the rep of GE.

Taking down HT switch gear (Vacuum circuit breaker ) at 11 KV Sub Stn MOV old of capacity 11 KV, 250/350 MVA comprising of repairs, complete overhauling / servicing, carrying out preventive maintenance alongwith testing of breakers by current injection test and refixing the same after repair / overhauling complete all as specified and as directed. Note:- (i) The servicing includes for busbar 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. (iii) Major spares like Breaker bushings, vacuum interrupter assly, busbar spout, busbar 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. However the rate quoted shall be deemed to include for any other minor spares requiring replacement. (iv) The servicing shall be carried out by auhtorised service engineer of OEM and approval of the same shall be taken from Engr-in-Charge.

Supply only following spares suitable for 250 to 450 MVA HT switch gear VCBs and 11 KV HT panel repair work:-

CTs epoxy cast wound, primary CTs with minimum primary current 50 to 100 A, double ratio, double core (Protection core-5P10/10P10 & Metering core- Class 1.0), 25 KA for 1 sec of 15 VA minimum Burden. (existing size)

1.5 sqmm flexible PVC insulated multistranded copper conductor cable, unsheathed, 1100 V grade for control wiring.

2.5 sqmm flexible PVC insulated multistranded copper conductor cable, unsheathed, 1100 V grade for control wiring.

LED Indication Lamps

Shunt trip coil 110 V DC/220 V DC

Breaker control switch

Busbar Spout

Circuit spout

Control circuit fuses 2 to 63 A

HRC fuse (PT HT side)

PT plug contact

Multifunction meter, Digital type (Displaying A, V, PF, Hz, KVA, KW, KVAR, KWh, Karsh etc.) Class 1/0.5 with RS485 port for communication in Modbus protocol. Make : L&T / Conzerve / HPL / SOCOMEC

VCB buffers

110 Volt DC closing coil assembly

Push to trip knob red assembly

Push to trip knob green assembly

Ratchet wheel

Nylon release lever

VCB charging powl

Shutters for racking shaft

Bus bar support insulator for VCB panel

Vaccume Interrupter Bottle VG2 Make : Schnider / Areva / ABB

Rectifier

Thermostat

M&L for replacement of damaged space heater in HT VCB of capacity 11 KV with new one, suitable to operate on 110 Volts DC supply complete with necessary wiring and control cable with toggle switch complete all as specified and as directed.

M&L for applying silicone High Voltage Insulator coating (Si-COAT 570 RTV) solution using electric airless sprayer to the inside surface of cable chamber alongwith busbar chamber of 11 KV Indoor VCB panel including all disconnection & re-connection of cables etc. complete all as specified and directed. Note:- Quantity of solution consumed per VCB panel shall not be less than 6.8Kg

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