CWEAFJ-02/2023-24 REPAIR AND MAINTENANCE OF 33 KV POWER TRANSFORMERS, CONTROL PANEL, BREAKERS AND ALLIED WORK OF 33 KV MAIN RECEIVING STATION AT AF STN JAMMU

Amount

M & L for complete servicing of VCB Capacity 400 to 600 Amps, 11 KV, 50 Hz, Model- JVAC No-Make : CG installed at 33 KV MRS by using required T & P including taking down old unserviceale spare parts of any nature and replace with new and making functional upto the satisfaction, working with all functions like OC, UV, EF, instant tripping on fault including testing with required instruments complete all as directed by Engr-in-Charge. The serviing covers the following :- (a) Through cleaning of breaker chamber (b) Lubrication of shutter mechanism/moving parts (c) Checking of shutter movement (d) Checking door interlocks with breaker (e) Checking of breaker interlocks with panel door

(f) Checking of breaker rack in/out inside the panel. (g) Coiling of closing and tripping coil (h) Checking of gear box operation. (j) Checking of Test/service Aux. switch operation (k) Checking of tripping mechanism operation. (l) Spring charging limit switches operation. (m) Checking of damping device and setting. (n) Tightness, checking of power connection. (o) Checking of breaker ON/OFF operation manually and electrically. (p) Checking of closing timings. Note : Spares shall be measured and paid sapartely under relevent items.

Supply only TNC Switch 25A IEC-60947-3, 11 KW - 12.8A Make L&T

Supply only Push Button Emergency complete Make : CG

Supply only Push Button Assy Make : CG

Supply only Tulip Contact Make : CG

Supply only Racking operating Mechanism 12 KV 1250A 31.5KA Make : CG

Supply only Racking Handle JVAC Make : CG

Supply only Racking Handle flap of panel Door / Emergency ON-OFF arrangement EL-CB A Make : CG

Supply only Shunt Closing Release 24V Make : CG

Supply only Shunt Tripping Release 24V Make : CG

Supply only Shutter Assy complete Panel Make : CG

Supply only Door Handle JVAC Make : CG

Supply only Shroud Side JVAC Make : CG

Supply only Shroud Centre Make : CG

Supply only 11 KV VCB Connection accessories 1250 Amps Make : CG

Supply only Window glass complete for door Make : CG

Supply only Spring stored Energy Actuator FSA-1 Drive for Breaker Make : CG

Supply only Vaccum Interrupters Bottle 12 KV

Supply only VCB copper male and female contacts capacity - 400 Amps, Serial No - 99486VG / 19A and 99477VG / 19A Model - JVAC Make C & G

Supply only PT HRC fuse 3.15 Amps for VCB 11 KV Incomer

Supply only Aluminium PG clamp size 4-6 Inch, thickness 5-10mm, full finish type polished at 33 KV Yard.

Note : The repaired breaker will be checked by the firm for the following :- (a) Through cleaning of breaker chamber (b) Lubrication of shutter mechanism / moving parts (c) Checking of shutter movement (d) Checking door interlocks with breaker (e) Checking of breaker interlocks with panel door (f) Checking of breaker rack in/out inside the Panel. (g) Coiling of closing and tripping coil (h) Checking of gear box operation. (j) Checking of Test / Service Aux. switch operation.

(k) Checking of tripping mechanism operation. (l) Spring charging limit switches operation. (m) Checking of SF-6 Gas pressure healthiness of all three poles. (n) Checking of damping device and setting. (o) Tightness, checking of power connection. (p) Checking of breaker ON/OFF operation manually and electrically. (q) Checking of closing timings. (r) The breaker shall be repaired through authorised dealer or representative of manufacturer only. Recommended authorised Rep by CG OEMM/S Integral Industrial Marketing Pvt Ltd, New Delhi-70 or any other reputed firm recommended by manufacturer.

(ii) The parts required will be measured and paid under relevant items of BOQ.

M & L for overhauling of 33 KV Outdoor VCB -04 Nos and Indoor C&R - 02 Nos Breaker Model : IEC-62271-100, making capacity-62.5, current capacity -1250 Amp, Closing Coil - 24 VDC including 33 KV Equipment and Control Panel - 02 Nos Make : CG after removing the old worn out spare parts and replacing with the same make, assembling, erecting, connecting, testing and commissioning complete with undermentioned scope of work :- (i) Removal /Isolation of live conductor from the breakers. (ii) Removal of SF 6 gas. (iii) Removal of pole column from structure. (iv) Inspections and aligments of mechanism for proper operations.

(v) Dismantling of pole column, inspection of fixed and moving contract for any any abnormality etc. (vi) Replacement of all O rings & gasket with proper lubrications. (vii) Excavation of poles through Vacuum Pump. (viii) SF-6 gas filling in poles, inspection & identification and arresting of leakages if any. (ix) Re-erection of Poles. (x) On & OFF Breaker operations, Pole discrepancy, anti-hunting etc. (xi) Testing for breaker timings. Notes : 1. The breaker shall be repaired through authorised dealer or representative of manufacturer recommended authorised rep by CG. 2. The parts required will be measured and paid under relevant Schedule

M & L for replacement of unserviceable Fixed Contact suitable for Isolator 36 KV nominal voltage 33 KV having copper (ETP) material including moving blade made of copper (ETP) 706 of existing sample or latest technology including replacement of steel screws and washers of required size and fixing in position complete all as directed.

Disconnecting for servicing of the Power Transformer of capacity 6.3 MVA, 33/11 KV installed at 33 KV Main Receiving Station of GE (AF) Jammu from HV/LV transmission line, control cables, conservator, bushing connections for testting including checking of transformer oil upto desired level in suitable capacity including testing complete yard. The following test are will be consider during service of transformers and test result report also will be handover to JE E/M / Engr-in-Charge :-

(a) Insulation resistance test (b) Transformer turn ratio test. (c) Magnetic balance test. (d) Magnatizing current (LV & HV) (e) Short circuit test. (f) DC Resistance test. (g) Vector group test. (h) Through stability test. (j) Cooler control circuit, functional check. (k) OLTC control circuit functional check. (l) OTT / OTA, WTT / WTA, Bucholze (Main and OLTC), Trip / Alarm, PRV Trip / Alarm, MOG Alarm etc. (m) Trip / Alarm / Annonciation check of T/F. Note :- Any damage during testing or at any stage occured, contractor shall be responsible and damage shall be made good by the contractor at his own expenses.

Supply and fixing of Micro Engine Relay-12 VDC Model No IR 3 ATT rang off time 0 to 15 Seconds

Supply and fixing of Phoenix contact 240 volt (Valve Trab) 12 ST, 40 KA, F3K-074 Model 2817990 complete.

S & F for Power system trip contact 240 Volt for DG and Main supply

Serving and testing and rectified of Earth Leakage Panel

Oil testing of Power Transformer from Govt approved laboratory as per relevant IS given and submitting the test report thereof. (IS 1866-1983 for oil in service) (a) Electric strength (BDV) with 4 mm gap) (b) Water content. (c) Specific resistance (Resistivity) at 90 degree centigrade. (d) Di-electric decipation factor (tan delta) at 90 degree centigrade. (e) Neutralization value (total acidity) (f) Interfacial tension at 27 degree centigrade. (g) Flash point (h) Sediment and/or sludge.

Material and Labour for heating, filtration and dehydration of Transformer Oil of 33/11 KV 6.3 MVA 02 Nos Power transformer as per IS : 10028 (Part-III) 1981 Para 5.2 dehydration/filtration plant to achieve dielectric strength of More than 60 KV at 4mm gap complete all as specified and as directed. Note : Any damage occurred to transformer during the process of dehydration, shall be made good by the contractor at his own expenses to the entire satisfaction of the Engr-in-Charge.

(a) The cost of dehydration machine including T & P will be deemed to be included in the quoted rate. (b) The contractor will arange electric supply to run the dehydration machine and cost of the same will be deemed to be included in the quoted rate. (c) The contractor will give in writing in advance for Schedule of dehydration / repair of transformer in order to plan shut down. (d) The contractor will arrange labour, T & P and stores in a manner to restore the electric supply within stipulated time i.e maximum within 08 hours. (e) Dehydration and topping up of oil will be carried out in front of rep of deptt and necessary test report be submitted by the contractor.

Supply only new EHV, 60 KV grade Transformer Oil as per IS-335 for cleaning purpose during rectification work of 6.3 MVA, 33/11 KV Power Transformer Make : Servo / HP

Servicing and checking of Current / Potential Transformer / Lightening Arrester 11 and 33 KV including Comlete yard. (i) Checking of IR value with insulation tester of 5000 volts between phases to earth and between the phases with breaker open and close position and submitting the report. (ii) Operating timings closing/tripping with timer set and submitting the report. (iii) Gas pressure check through gas pressure gauge and submitting the report. (iv) Measuring of contact resistance with contact resistance meter (CRM) and submitting the report.

(v) Checking of leakage of oil. (vi) Checking of IR value and submitting the report. (vii) Tightening of connections of control cables.

Supply and fixing of 11 KV lightening arrestor/surge arrestor complete all as specified and as directed.

Supply only fixed Contact Assembly complete 33 KV 1250 Amp isolator switch (horizonal type) complete all as specified and as directed.

Cable Jointing Kit for 11 KV grade cable for outdoor termination cold shrinkable type joint complete with jointing material and accessories of size 120 to 185 Sq mm complete all as specified and as directed.

Silica Gel breather for main tank, type : HPO-C, Gel Capacity 3.3 Kgs complete all as specified and as directed.

Silica Gel Breather for OLTC, type : HPO-A, Gel Capacity 1 Kg complete all as specified and as directed.

M & L Pea gravel 40/60 mm graded hand packing (any thickness) in 33 KV Station all as per latest Engineering practice and directed by Engr-in-Charge complete all as specified

Danmet Chemical spray (DC> 2-26 having container 415ml/300g for precision blended multipurpose product for prevents corrosion penetrates, lubricates, displaces and seals out moisture release rusted mechanism cleanse etc. complete all as specified and as directed. Make : Danmet Chemical Pvt Ltd

Painting of CT and PT plate covers and rusted portion of yard structure with two coat of super enamelled synthetic paint of smoke grey colour complete after preparing of old surface by scratching the old paint complete all as directed.

Supply and fixing of control cable of 2.5 Sqmm 6 Core copper cable for C & R control panel complete all as directed by the Engr-in-Charge. (02 Run)

MAMTA ENTERPRISES

JAI DURGA CONSTRUCTION CO

DARVESH ENGINEERING WORKS

DAVINDER SINGH

Bidder Name

JAI DURGA CONSTRUCTION CO

ANIKET TRADERS

MAMTA ENTERPRISES

DAVINDER SINGH

DARVESH ENGINEERING WORKS