41-ETC-I(A)/ 2024-2025

Amount

The following work is required for retrofitting/repairing of marshalling box of 132/11 KV 20 MVA T/F-I at 132 KV S/s Gyanpur, Praygaraj. The details of work listed below.

Supply and fixing of Oil temperature indicator(analog type) of temp range from (0-150) 0C,5A,AC/DC both and consist of two flexible capillary tubes of 05 meter long and 04 no mercury bulb switch for alarm, trip and cooling control system of power transformers of standard make. Work includes fixing of capillary inside the temperature sensing element within the tank and proper termination of connection at both end.

Supply and fixing of Winding temperature indicator(analog type) of temp range from (0-150) 0C,5A,AC/DC both and consist of two flexible capillary tubes of 05 meter long and 04 no mercury bulb switch for alarm, trip and cooling control system of power transformers of standard make. Work includes fixing of capillary inside the temperature sensing element within the tank and proper termination of connection at both end.

Supply and fixing of 01 no. main switch of 3P/1W,415V 16 rating and 01 no. MCB of 04 pole ,415 V, 16 A rating for 3 phase incoming supply for cooling fans.

Supply and fixing of 01 no,415 volt,16 A,4NO,contactor for main supply of cooling fans installed on 20 MVA T/F .Work includes proper connection of contactor with ACDB or AC cubical installed in the switchyard.

Supply and fixing of fan control contactors of rating 230v,9A,08 NO,for auto function of cooling fans and relays of rating 230 V,9A,02 NO+02NC for supply monitoring for cooling fans.

Supply and fixing of 3 pole MCB of rating 230 V, 2A, on the rail fixed on the front side of marshaling box..

Supply and fixing overload relay (Type 3US5000) of rating (0.5-2A) for cooling fan of transformers on the front side of the marshaling box.

Wiring of all interconnection with proper ferrules and lugs of suitable size with 4 mm2 flexible insulated copper conductors for power connection and with 2.5 mm2 flexible insulated copper conductor for control connection in the marshaling box. Work includes supply and fixing of cable gland(19mm dia) ,wire , rail base, ferrule, lugs as required for proper operation of marshaling box.

Supply and fixing of time delay relay (ON DELAY), of rating 230 volt, 1CO for fan failure indication and stand by fan on indication of standard make.

Supply and fixing of fan control switches for on/off control of fans (ON/OFF) of ratings 415 V, 10A of standard make.

Supply and fixing of fan control contactors of type 3TS30 and rating 230 V,9A,6NO+2NC for control operation of cooling fans of standards make .

Preparation of Interconnection drawing & Modification in marshaling box, wiring for new control and switching equipment to be installed in the cubical box. The work includes submission of drawing, Connection/ Termination as approved by department. ( In 3 copy)

Providing and fixing of terminal block (B3/M3 stud type) of rating 415 V, 32A, for interconnection of fan control circuit, auxiliary protection (OTI, WTI, Buchholze, , OSR,) from field to relay panel, and also for annunciation for indication of type of faults. All material provided by contractor at his own cost.

Supply and fixing of 01 no door switch of push off type with rating 230 V,2A, and 01 no panel lamp(LED) of 230 V,8W for proper illumination inside the marshaling box.

Supply and fixing of 01 no ,5pin socket switch box ,01 no heater switch ON/OFF type, of 230 V,6A, 01 no,230 V,40W heater with metal glad and 01 no thermostat of rating 230V,(0—100C0) in side of marshaling box. Work includes proper wiring of given sockets and switches.

Providing and fixing of marshalling box of iron sheet 16 gauge of size ( 125 X 110 X 35 cm) with double door gate along with handle and lock system as per sample with two glass window fixed and Sockets switch for AC supply and two led bulb fixed. Inside box channel to be fitted for fitting contactor, relay ,TB etc.. Work also includes dismentling of old damaged marshilling box, cable safetly and erection of new box in place of old one and complete cabeling.

Following work is to be carried out for for Oil replacement, centrifuging of oil of T/F –II (JEU Mont Make Mfg year 1974) &Spray Painting of 132/11 KV 20 MVA T/F-I at 132 KV Gyanpur(P. C.) under ETD-I Prayagraj with all cost of man, material, T&Ps as per technical specification for proper completion of work with due safety and precautions as per direction of supervising engineer.

Complete drain out of T/F oil from the existing 20 MVA into empty oil drums.

Shifting and stacking of filled oil drum with discarded T/F oil to store room of 132 KV S/S Gyanpur.

Cleaning of core and winding by transformer oil and removal of sludge from bottom of main tank.

Filling of dry Nitrogen Gas having DEW point (-) 70 deg Celcius to (-) 75 deg Celcius under vaccum from top value of the Transformer upto pressure of 3 PSI and maintaining the same in the main tank for 12 hrs. Including cost of Nitrogen gas & Nitrogen gas filling device.

Centrifuging of complete T/F oil in T/F tank by connecting centrifuging pipe circulating the T/F oil through centrifuging machine to be provided by the contractor and taking the BDV value of the oil periodically till the required value is achieved as per direction of supervising engineer and also measurement of PPM. All labour T&Ps, Centrifuging Machine shall be provided by contractor at his own cost.

Carriage of oil tanker 20 KL including loading and unloading from 132 KV S/S Handia to 132 KV S/S Gyanpur PC (dist approx 40 KM) and back to 132 KV S/S Handia after successful completion of work.

Creating the vaccum inside main tank for periof of 12 hr. and filling of centrifuged new transforner oil in main tank of required BDV after prepeation in 20 KL oil tanker.

Sampling, collection and Transportation of T/F oil for conducting following test from NABL approved lab and submission of test reports and repeating the same job after 15 days of charging of transformer. 1. BDV 2. PPM 3. DGA

Spray painting of following items at 132KV S/S Gyanpur PC , Prayagraj with one coat of good quality red oxide primer and two coats of light smoke gray synthetic enamel paint of Ist quality Asian/ Nerolec/ Burger/ Shalimar make after proper cleaning of rust dust and oily surface by enemy paper and wire brush including the cost of all material, labour and T&P.

132/11 KV 20MVA transformer-I (Telk make).

100 KVA, 11/0.4KV station transformer.

132 KV CT/ PT( Top cover will be painted with Red ,yellow & blue colour as phases).

132 KV CT/PT/CVT Junction Box.

11 KV CT/PT( Top cover will be painted with Red ,yellow & blue colour as phases).

11 KV CT/PT Junction Box.

145KV Isolator Junction Box.

ACPS Box/AC Cubicle.

Fire Hut (with Red Color including writing notation of fire).

Painting of fire Bucket with two coats of red colour synthetic enamel paint Asian/Nerolac/Berger make and writing of ‘आग’ on both side with white colour synthetic enamel paint.

Painting of earth flat of following size after removing of rust, dust and oil spots with one coat of red oxide primer and two coats of first quality bus green of paint of standard make like Asian/Burger/Nerolac etc. including cost of material labour and T&P as per technical specification.

Earth flat size 50x6mm

Earth flat size 75x10mm

Painting of various equipment name plate by proper cleaning rubbing of rust & dust by emery paper/sand paper and painting the above board with one coat of good quality red oxide primer. Writing the various equipments name in black paint after painting the name plate with two coat of synthetic enamel yellow colour paint of first quality Asian/. Burger / Nerolac.

Painting of substation Main gate at 132KV substation Gyanpur (PC) by proper cleaning by sand paper/steel wire brush and then painting with one coat of red oxide primer & then two coat of synthetic enameled Green paint of standard make .

Painting of Round pole used for lighting at 132KV substation Gyanpur (PC) after proper cleaning by sand paper/steel wire brush and then painting with one coat of red oxide primer & then two coat of synthetic enameled Aluminum and Black paint of standard make.

Replacement of damaged pale fencing by replacing damaged pales with nut& bolts by new pales and nut bolts. New pales will be provided by dept.free of cost.Work includes painting of pale fencing using one coat of red oxide primer then two coats of mint green colour of nerolac/berger/asiann paints. Other materials T& P and labour etc will be provided by the contractor at his own cost.

Supply & fixing of bay display board at 132 KKV Gyanpur(P.C) made MS angle iron 50x50x6 mm and one meter long supprt MS Board of size 600x300 sq mm sheet 18 gauge welded with 25x6 mm sq mtr MS flat around on the MS Sheet and fitting complete display board digging pit 60x60x90 mm cubic mtr and then plastering. Writing the bay name in black paint after painting the name plate with two coat of synthetic enamel yellow colour paint of first quality Asian/. Burger / Nerolac as per direction of JE/SDO. Other materials T& P and labour etc will be provided by the contractor at his own cost.

Replacement of old/obsolete air compressor SF6 145KV CB installed at 132/11KV 20 MVA Transformer II Bay and 132 KV Gopigang bay with 132 KV SF6 CB at 132 KV substation Gyanpur Pump Canal under ETD-1 Prayagraj by way of opening of its earthing, jumper, clamps/connectors. Safely shifting of these CBs with the help of manually/crane and safely transportation from work place to stacking place as per direction of site in-charge. Shifting of now 145kV CB from stacking place to working site with the help of manually/cranc. Erection of the new 145Kv CBs along with modification of foundation using channels/angles, if required including carthing, cabling termination jumpering and tightening of clamp/connectors. The work also include measuring of contact resistance close and opening time by CB analyser including Cost of all labour, glands, ferrules, earthing strip, Channels, T&P, Hydra/Crane hiring charges, welding electrodes etc.

Marc vision infrasolutions pvt. ltd. (BID ID -4890473)

M/s. AKHYA ENTERPRISES (BID ID -4895734)