Repair/replacement and maintenance of distribution transformer, switch gears and connected works at Yol Cantt under AGE E/M of GE (KH) YOL

Amount

Material and labour for servicing /testing and calibration of breaker/control panel including CT, PT and relays in control panel of VCB of capacity 630/800 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) Check for rust and wear. (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 . (xvi) Replacement of carbon brush of spring charging motor (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

Supply, installation and testing of Numerical Relay draw out type in replacement of any type, in HT 11 KV VCB Panel comprising of new and modern numerical scheme for detecting, indicating and tripping the breaker on faults over-current and earth-fault in any of the three phases, Trip circuit supervision relay, 5% pick up for OC and 5% for EF. The relay shall also have the following features as minimum; (i) Programmable rated current 1A & 5A, (ii) Last 8 fault record & 200 event record with time stamping, (iii) 4 analog input, 8 DI & 8 DO, (iv) Communicable on IEC61850 protocol, (v) Disturbance recording upto 300 cycles, (vi) Self supervision function.

Note:- The relay shall be fully integrated with the feeder, internally capturing feeder statuses if available including Breaker On, Off, Spring Chrgd, Test, Service, AC-Fail, DC supervision relay, Trip circuit healthy relay, inter panel tripping, Master trip relay, local remote and display the same locally on a built-in LCD screen and suitably labeled status LEDs. Relay shall have facility to locally Trip/Close the breaker as a backup to TNC switch provided separately on the panel. The relay shall be fixed on new 2mm CRCA sheet of matching existing VCB panel color and suitable size covering all blank space formed by removing old mechanical type IDMT relay complete including associated wiring and integration with existing HT VCB panel complete all as specified and directed. Make: Ashida

HRC fuse of rating 2 to 6 Amp any type to suit existing system complete all as specified and directed.

Supply and fix including Taking down Epoxy/ resin cast CT of dual core dual ratio 100-50/5+5A with 5 P 10 for protection and class-I accuracy having 15 VA burden complete all as specified and directed.

Supply and fixing in replacement of Trip coil with plunger with working voltage 24 volts DC suitable for existing panel complete all as specified and directed.

Supply and fixing in replacement of Closing coil with working voltage 24 volts DC suitable for existing panel complete all as specified and directed.

Supply and fixing in replacement of Charging Spring motar of VCB trolley complete all as specified and directed.

Taking down old UNSV insulator and Supply and fixing in replacement Epoxy resin cast insulator suitable for 11 KV VCB of Complete in all respect all as specified and directed.

Supply only insulation Tape for HT for (electro maintenance and protection), each peice 5 mtr long complete all as specified and as directed in Engr-in Charge.

M&L for draining out complete transformer oil from transformer of upto 400 KVA capacity at site which found major repair and storing the oil in suitable container (container to be provided by the contractor to keep aside for re-use (after repair) and lifting of core assembly by opening of top cover and other items for inspection/examination of core assembly, after mainor repairs its fixing in original position, or for major repairs transformer to make it ready for transportation to carry out rewinding work in workshop.

M&L for ON load Centrifuging and dehydration including filteration and cleaning of transformer oil by dehydration machine of 11/0.433 KV 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. Note :- Deficient quantity of Transformer oil required for top up shall be measured and paid separately under relevant items of this Schedule here-in-after as supply only.

Shifting of transformer trolley mounted upto 400 KVA from one Substation to other distance not more than 5 Kms carefully with tractor/ Crane including all Towing arrangement and taking out HT/LT connections of defective transformer and connecting carefully HT / LT connection including temporary earthing all as specified.

M&L labour for alternative arrangement by hiring, transportation of transformer of capacity upto 400 KVA in place of unserviceable copper /aluminium wound from transformer of capacity upto 400 KVA, opening top cover, and carrying out the following work complete all as specified and directed :- (a) Dismantling of all attachment viz breather assembly, conservator, oil temperature gauge, HT/LT bushing minor repairs etc. as required and directed and keeping aside for reuse. (b) Taking out the core with winding assembly. (c) Removing of complete winding from core and dismantling the core, cleaning of core laminate sheet and keeping aside for reuse (d) Cleaning of complete transformer tank oil fins, removing of sludge, and making the inside surface of tank dry by blowing of hot air as directed and specified. (e) Painting of outside surfaces of transformer complete by means of spray machine as directed. (f) Rewinding of HT/LT leg coil complete using copper wire /strip of appropriate gauge, size and turn as per existing with double paper coated insulation including all requisite insulating materials like packing sleeves, separator, tapes etc. heating, varnishing the core and winding assembly after framing up top and bottom steel structure of transformer all as specified and directed. (g) Replacement of all insulating materials other than incorporated for rewinding of HT/LT coils as per existing.

(h) Fixing only HT procelain bushing with studs, nuts, washers 3 Nos. and LT procelain bushing with studs, nuts, and washers 4 Nos. and connection with primary and secondary windings and reconnecting with the main terminals as required and directed. (j) Replacement of all unserviceable gasket from top cover, HT/LT bushing with new one by using rubberised gasket sheet 4.0mm/6.0mm thick duly pasted with suitable adhesive . (k) Replacement of unserviceable bolts with new one and fixing of existing serviceable bolts, nuts, washers of different sizes and tightening properly. Note :- The contractor shall give written warranty of one year from the certified date of completion for the repaired transformer. HT/LT leg coils and transformer oil required for top up shall be measured and paid separately under relevant items of this Schedule here-in-after as supply only.

Supply only transformer oil of approved quality as per IS having dielectric strength of 45-60 KV in 2.5mm gap for filling in transformer or for topping up as required and directed

Supplying and fixing in replacement (at site/workshop), Porcelain Transformer bushing on LT (440 Volt) side, including brass stems conical bush and gasket after disconnecting electrically and mechanically for indoor/outdoor transformer of capacity upto 400 KVA and re-connecting electrically and mechanically, testing complete all as specified and directed. Note.The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, opening of top cover by unscrewing nut, bolts washers and suitable size pad type bus bar almuminium and nut bolt washers etc.

Supplying and fixing in replacement (at site/workshop), Porcelain Transformer bushing on HT (11 KV) side, including brass stems conical bush and gasket after disconnecting electrically and mechanically for indoor/outdoor transformer of capacity upto 400 KVA and connecting electrically and mechanically, testing complete all as specified and directed. Note.The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, opening of top cover by unscrewing nut, bolts washers and suitable size pad type bus bar almuminium and nut bolt washers and reconnection.

Supplying and fixing in replacement, Silica Gel Breather assembly including vent pipe and Silica Gel for indoor/outdoor transformers, capacity upto 400 KVA complete all as specified and directed.

Supply and fixing Thermometer of transformer capacity upto 400 KVA complete all as specified and directed.

M&L or rewiding of HT/LT coils of transformer of capacity 25 KVA to 400 KVA with super enamelled copper winding wire of appropriate gauge and proper number of turns alongwith insulating material eg leatheroid, paper insulation, cotton tapes, Empire tapes, wooden block packings, PVC sleeves, soldering and varnishing with insulating varnish, heating/drying etc complete all as specified and directed by Engr-in-Charge.

M&L or rewiding of HT/LT coils of transformer of capacity 25 KVA to 400 KVA with super enamelled Aluminium winding wire of appropriate gauge and proper number of turns alongwith insulating material eg leatheroid, paper insulation, cotton tapes, Empire tapes, wooden block packings, PVC sleeves, soldering and varnishing with insulating varnish, heating/drying etc complete all as specified and directed by Engr-in-Charge.

Maintenance & repair of Compact substation from OEM at various location of following capacity (Note: rate quoted deemed to be inclusive of any type of T&P, testing kits, wiring of any type of existing size wire & tagging, CT's, metering and Metering Display device, manpower etc required at site for any type of maintenance). 1) IEC 62271.202, Type CSS - SN , Transformer: 11/0.433kV, UP TO 400 kVA The scope of work is as follow:- . A. RMU (HT Side) 1. Checking and making fuctionality of RMU mechanism in auto and manual mode. 2. Checking and toping up of SF6 gas of any quantity, rate quoted deemed to be inclusive of any type of T&P required at site and producing certifate of same from OEM. 3. Checking and making functional breakers ON/OFF operation, manually & electrically. 4. Functional checking of all electrical & mechanical interlock operation of RMU. 5. Testing of CTs & Relays with testing kit and producing certificate of same from OEM. 6. Caliberation of Relays and producing certifate of same from OEM. B. Transformer (upto 250 KVA). 1. Checking and making Transformer functional. 2. Checking and toping up of oil level in T/F. 3. Checking and making Functional of cooling fan, if available. 4. Checking function of hooter/Buzzer. 5. Routine test of Transformer and producing test certificate of same.

C. LT Side. 1. Checking and making all the ACB & MCCBs fuctional. 2. Checking and making all the ACB/MCCBs ON/OFF operation manually & electrically. 3. Checking and adjusting and servicing all the ACB and ACB relay setting as per load conditions, Metering devices, CT's and wiring of any type and producing certificate of the same. 4. Repair/replacement to APFC panel capacitor bank of 25KVAR x 4 (max) and APFC relay setting, repairing LCD display, repairing/replacing CT's, fans, contactors of any type, fuse is deemed to be included in quoted rate. 5. Repair replacement of battery charger upto 24 Volts is deemed to be included in quoted rate. 6. Repair/replacement of flash out Bus bar & insulators of any length, rating and any quantity is deemed to be included in quoted rate. 7. Repair/replacement of unserviceable handle assembly FNX/FN type, auxillary contact kit, LED indication of any colour, push button etc. is deemed to be included in quoted rate. Note: Above service should be done by an authorised service centre.

M&L for servicing of ACB with Microprocessor (Make: crompton greaves), Range (800 - 1250Amps) 415V, 50Hz,50 KA, after taking shut down and properly replacing flash out bus bars, settings relays and their mechanism, repairing charging mechanism & handle, removing wornout parts, repacing and testing and commissioning, complete all as specified and directed by engineer-in-charge. Note: T&P and Parts required to make the ACB are deemed to be included in quoted rates.

MCCB 4 pole with fixed thermal and fixed magnectic release, 400 Amps having rupturing capacity 36 KA, including taking out old MCCB, complete all as specified and directed.

MCCB 4 pole with adjustable thermal and fixed magnectic release, 250 Amps having rupturing capacity 25 KA, including taking out old MCCB, complete all as specified and directed.

MCCB 4 pole with fixed thermal and fixed magnectic release, 160 Amps having rupturing capacity 25 KA, including taking out old MCCB, complete all as specified and directed.

MCCB 4 pole with fixed thermal and fixed magnectic release, 100 Amps having rupturing capacity 25 KA, including taking out old MCCB, complete all as specified and directed.

malghotra construction co