CWE/GGN/FT-69/2025-26 SPECIAL REPAIR / REPLACEMENT OF HT VCB, SERVO VOLTAGE STABILIZER AND OTHER ALLIED WORKS AGAINST BER HT VCB, SERVO VOLTAGE STABILIZER AT AF STN NARAINA UNDER GE (AF) FARIDABAD

Supplying, Installation, Testing & Commissioning indoor type panels shall be constructed from CRCA/ Aluminium Zinc coated steel sheet of 2 mm thickness, floor mounted metal enclosed, 11 KV VCB panel with 1 no. VCB (ICOG Type), totally enclosed and fully interlocked, horizontal draw out, horizontal isolation type breaker as per IEC-62271-1,100,200, as amended up to date and additional Specifications, having capacities as mentioned below, single break, trip free mechanism, manually charged and manually closing breaker suitable for use on 11 KV, 3 phase, 50 Hz A.C. supply with short circuit fault level of 26.3kA for 3 sec , Panel shall be full internal arc tested i.e. in all three chambers at 26.3kA for 1 sec for safety purpose (AFLR). compete with self contained, fully interlocked, rack in and rack out mechanism, air insulated HT sleeved (PVC sleeve is not accepted) self supported Copper bus bars of 1250 amps capacity, breaker featured with mechanical ON/ OFF indicator with hand trip coil and auxiliary switch of 4 NO+4NC and equipped with following switchgears and accessories. Make of Vacuum interrupter, circuit breaker, Panel, relays & meters shall be same. Cable compartment suitable for 2RX3C x 240 sq. mm XLPE 11 KV cable (Cable entry from bottom) end termination with heat shrinkable jointing material etc as reqd. There must be a viewing window on VCB chamber door and same must be as per Internal arc test report. The basic insulation level of entire panel shall be 28KV(RMS) / 75KV(Peak). Only OEM Factory made panels are acceptable. System Integrator panels are not acceptable.

Supply, installation, testing and commissioning of servo colled Voltage Stablizer for automatic operation (confirming to BIS 9815 (Part-I) : 1994, reaffirmation 2019 latest verison), three phase , natural oil cooled , indoor type and designed for input variation between 300V to 480 V with output voltage stabilized at 415 V with accuracy + 1% and speed of correction 6 volt per secound and of capacity 100 KVA complete.

M&L for Design ,development ,supply commisiong and testing burnished metallic brown 99.99% pure copper material specially develpoed for earthing purpose T point terminal exothermic/ nut bolt/ breezing . ground tubular effective chemical earthing (CPRI tested for 25KA current capacity for LT line ) highly anticorrosive long life eletrode with and including adequate protective coating to withstand servere weather condition in the earth pit of the standard size comprising of 40 mm 3m long copper rod as primary conductor and hollow copper tube of 80 mmx 3 m long with alosing base plate of 80 mm secondary conductor to install with suitable connecting terminal cofirming of IS 3043 1987 specification highly conductive packing material to be filled in earth pits for providing uniform low resisitivity anticorrosive ,hygroscope medium around the earth system for improving the efficiency of current dissipation with cystalline conductive mixture CCM 25 kg per bag sufficient quantities required at site complete RCC earthing pit cover material and labour complete bfc compound specified and as per ic 62561 acceptance chemical test Leaching, sulphur determination, corrosion, resistivity along with CPRI and chemical compound test report incl taking down existing u/s earthing Note :- 1. Excavation / drilling hole in hard rock is included in the rate quoted incld. T&P 2. Min. resistance for earthing pit shall be less than 1 ohm. 3. Drilling or earth work shall be included in the overall cost quoted by the contractor.

Supply and fixing in repair of Earth continuity strip or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or fixed on wall with porcelain insulator or any other indicated situation for loop earthing etc. as required 32x6 mm copper strip complete all as directed by Engr-in-Charge.

Excavation in trenches in soft / loose soil not exceeding 1.5 Mtr wide and not exceeding 1.5 mtr depth for laying of cables/poles or foundation etc and getting out Complete all as specified and directed by Engr-in-Charge.

Returning, filling, including spreeding leveling watering and well ramming in layers not exceeding 25 cm apart complete all as specified and directed by Engr-in-Charge.

Removing of surplus excavated soil to distance not exceeding 50 Mtr from starting point and depositing where directed at a level not exceeding 1.5 Mtr above the starting point complete all as specified and directed by Engr-in-Charge.

Material and labor for sand cushioning to XLPE cable with using clean dry and natural river sand with a layer of 8 cm thick before laying the cable and 15 cm thick layer after laying the cable and this then gently punned down to a thick of 10 cm above the top the upper most cable all as specified and as directed.

Supplying and laying un-reinforced precast concrete cable cover, class HV, Type 1 with peak, size 300 mm x 180mm x 40mm

Supplying and laying un-reinforced precast concrete cable cover, class LV, Type 1 with peak, size 250 mm x 150mm x 40mm

M&L for boring of holes under road/pavement/hard standing by trenchless technology.using ultra sound technique and necessary machine including material and labour for HDPE pipe of 160 mm dia suitable for 04 Kg/cm working pressure. Wall thickness of pipe not less than 6.5 mm. for 1.1KV Cable (i) Depth of Trench Less shall not less than 0.45 mtr from ground level unless other wise specifed due to site equirement and contractor has to maintain the depth of trenchless up to 1 mts from ground level if required as per site conditions all rates quoted shall be demeed to be included to maintain the Trench less depts as directed during exection to avoid damages to the existing services (ii) The cost quoted is deemed to be inculded for repairs I rectification for damages done to the existing elecrtical Comminication and water supply system / Sewage System during execution of work.

Supply and laying in replacement XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable, (heavey duty) with alumnium conductor, multistranded, size 120 Sqmm, 3 core, 11000 Volts grade, laid in trenches or passing through pipes including testing after laying and commissioning, complete all as specified

Supply and laying in replacement trenches/ fixed to walls/poles etc and commissioning XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor 1100 volts grade with strandede aluminium conductor of size 185 Sqmm , 3.5 core.

Material and labour for cable end terminal out door, cold shrinkable type suitable for XLPE cable of size 50 Sqmm to 95 sqmm 3 core with working voltage 11000 volts with jointing matrial and accessories including testing etc complete all as spd and directed.

Material and labour for cable end terminal out door, cold shrinkable type suitable for XLPE cable of size 120 Sqmm to 185 sqmm 3 core with working voltage 11000 volts with jointing matrial and accessories including testing etc complete all as spd and directed.

M&L for cable end termination kit out door, heat shrinkable type suitable for XLPE/ PVC cables of size 70 Sqmm to 95 sqmm 3½ core core with working voltage 1100 volts.

S & F rubber insulation mat of size 2 mtr x 1 mtr wide 3 mm thick red/blue colour ISI marked embossed for up to 33 KV as per latest IS complete all as specified and as directed by Engineer-in-Charge.

Net Contract Sum will be after deducting Sch of Credit of Rs 31,762.00