CWE/D-19/2023-24

Amount

Supply , installation , commissioning & testing of 630 KVA, 11/0.433KV, AN, Oil Type Transformer 5 star rated , Level -III with corrugated off circuit tap links of rating +5 to - 5% @2.5 %.by means of hand operated off load tap changing gear 630 kVA capacity transformer copper worund step down outdoor type 11000/433 Volt(at no load) double wound oil immersed naturally cooled with external cooling tubes core type delta connected on primary side (HV) and star connected on secondary side(LV) in accordance with vector symbol Dy-II (vector group) with neutral brought on secoundary side (LV side) and having tapping changing at +/- 7.5% in step of +/- 2.5% to be changed and the maximum temperature rise should not exceed 45 degree centrigrade in oil and 55 degree centrigrade in HV/LV winding when measured by resistance method after continuous full load run in ambient temp of 40 degree centrigrade and the transformer shall be comprised complete all as specified and directed with the following standard fittings:-

(i) Pressure Release Valve (ii) Thermometer pocket on tank cover (iii) Oil temprature indicator with 2 contacts alarm & trip (iv) Rating plate with terminal marking (v) Two earthing terminals on tank and cover to facilitate fixing of GI earth strip (vi) Oil level guage (vii) Oil drain filter valve (viii) Lifting lugs (ix) Oil filter hole with cap/plug including connection complete (x) Four plain solid cast steel detachable rollers (xi) First fill of transformer oil confirming to relevant IS and testing upto 60 KV di-electric strength Note:- (i) Transformer should be double copper wound (Level- 03) as per IS: 1180 (Part-I) 2014 with HT, LT cable box, OTI & PRV. (ii) The rates inclusive of making platform as per OEM recommendation made with bricks and necessary PPC at bottom and top and plastering complete all specified and directed by Engg-in-charge.

Supply , installation , commissioning & testing of 500 KVA, 11/0.433KV, AN, Oil Type Transformer 5 star rated , Level -III with corrugated off circuit tap links of rating +5 to - 5% @2.5 %.by means of hand operated off load tap changing gear 500 kVA capacity transformer copper worund step down outdoor type 11000/433 Volt(at no load) double wound oil immersed naturally cooled with external cooling tubes core type delta connected on primary side (HV) and star connected on secondary side(LV) in accordance with vector symbol Dy-II (vector group) with neutral brought on secoundary side (LV side) and having tapping changing at +/- 7.5% in step of +/- 2.5% to be changed and the maximum temperature rise should not exceed 45 degree centrigrade in oil and 55 degree centrigrade in HV/LV winding when measured by resistance method after continuous full load run in ambient temp of 40 degree centrigrade and the transformer shall be comprised complete all as specified and directed with the following standard fittings:-

(i) Pressure Release Valve (ii) Thermometer pocket on tank cover (iii) Oil temprature indicator with 2 contacts alarm & trip (iv) Rating plate with terminal marking (v) Two earthing terminals on tank and cover to facilitate fixing of GI earth strip (vi) Oil level guage (vii) Oil drain filter valve (viii) Lifting lugs (ix) Oil filter hole with cap/plug including connection complete (x) Four plain solid cast steel detachable rollers (xi) First fill of transformer oil confirming to relevant IS and testing upto 60 KV di-electric strength Note:- (i) Transformer should be double copper wound (Level- 03) as per IS: 1180 (Part-I) 2014 with HT, LT cable box, OTI & PRV. (ii) The rates inclusive of making platform as per OEM recommendation made with bricks and necessary PPC at bottom and top and plastering complete all specified and directed by Engg-in-charge.

Supply , installation , commissioning & testing of 400 KVA, 11/0.433KV, AN, Oil Type Transformer 5 star rated , Level -III with corrugated off circuit tap links of rating +5 to - 5% @2.5 %.by means of hand operated off load tap changing gear 400 kVA capacity transformer copper worund step down outdoor type 11000/433 Volt(at no load) double wound oil immersed naturally cooled with external cooling tubes core type delta connected on primary side (HV) and star connected on secondary side(LV) in accordance with vector symbol Dy-II (vector group) with neutral brought on secoundary side (LV side) and having tapping changing at +/- 7.5% in step of +/- 2.5% to be changed and the maximum temperature rise should not exceed 45 degree centrigrade in oil and 55 degree centrigrade in HV/LV winding when measured by resistance method after continuous full load run in ambient temp of 40 degree centrigrade and the transformer shall be comprised complete all as specified and directed with the following standard fittings:-

(i) Pressure Release Valve (ii) Thermometer pocket on tank cover (iii) Oil temprature indicator with 2 contacts alarm & trip (iv) Rating plate with terminal marking (v) Two earthing terminals on tank and cover to facilitate fixing of GI earth strip (vi) Oil level guage (vii) Oil drain filter valve (viii) Lifting lugs (ix) Oil filter hole with cap/plug including connection complete (x) Four plain solid cast steel detachable rollers (xi) First fill of transformer oil confirming to relevant IS and testing upto 60 KV di-electric strength Note:- (i) Transformer should be double copper wound (Level- 03) as per IS: 1180 (Part-I) 2014 with HT, LT cable box, OTI & PRV. (ii) The rates inclusive of making platform as per OEM recommendation made with bricks and necessary PPC at bottom and top and plastering complete all specified and directed by Engg-in-charge.

Supply, install, testing and commissioning of Servo controlled voltage stabilizer ( Confirming to BIS 9815:Part 1 :1994) 75 KVA ,Three phase,50 Hz, Naturally Oil cooled , indoor ,unbalanced type, copper wound, metallic body duly powder coated with lifting Hooks four nos ,digital display type, relay free smooth and silent operation with 1st filling of Transformer oil up to level as per OEM recommedation having following specification:- (a) Input voltage 340V-480V (b) Output voltage stabilized at 415V +- 1% (c ) Rated frequency 50 Hz, (d) No distortion in wave form (e) Response time not to exceed 20 mile second ( f) sensitivity (+/-)1% (g) Rate of correction 8 Volt/second for single phase and 13 V/seconds for phase to phase, ( h) Efficiency more than 95%,Type of load : three phase , unbalanced type, (j) Digital display with multi-functional meter Protections:- a. Over load/Short Circuit protections on input side by MCCB 125 Amp 3 pole 36 KA (thermal magnetic release adjustable) b. High/Low voltage cut off c. By pass arrangement in case of emergency by on load changeover switch 4 pole , suitable Amp rating as per OEM recommendation d. Single phase sequence change protection Capacity:- 75 KVA

Supply, install, testing and commissioning of Servo controlled voltage stabilizer ( Confirming to BIS 9815:Part 1 :1994) 150 KVA ,Three phase,50 Hz, Naturally Oil cooled , indoor ,unbalanced type, copper wound, metallic body duly powder coated with lifting Hooks four nos ,digital display type, relay free smooth and silent operation with 1st filling of Transformer oil up to level as per OEM recommedation having following specification:- (a) Input voltage 340V-480V (b) Output voltage stabilized at 415V +- 1% (c ) Rated frequency 50 Hz, (d) No distortion in wave form (e) Response time not to exceed 20 mile second ( f) sensitivity (+/-)1% (g) Rate of correction 8 Volt/second for single phase and 13 V/seconds for phase to phase, ( h) Efficiency more than 95%,Type of load : three phase , unbalanced type, (j) Digital display with multi-functional meter Protections:- a. Over load/Short Circuit protections on input side by MCCB 200 Amp 3 pole 36 KA (thermal magnetic release adjustable) b. High/Low voltage cut off c. By pass arrangement in case of emergency by on load changeover switch 4 pole , suitable Amp rating as per OEM recommendation d. Single phase sequence change protection Capacity:- 150 KVA

Supply, install, testing and commissioning of Servo controlled voltage stabilizer ( Confirming to BIS 9815:Part 1 :1994) 250 KVA ,Three phase,50 Hz, Naturally Oil cooled , indoor ,unbalanced type, copper wound, metallic body duly powder coated with lifting Hooks four nos ,digital display type, relay free smooth and silent operation with 1st filling of Transformer oil up to level as per OEM recommedation having following specification:- (a) Input voltage 340V-480V (b) Output voltage stabilized at 415V +- 1% (c ) Rated frequency 50 Hz, (d) No distortion in wave form (e) Response time not to exceed 20 mile second ( f) sensitivity (+/-)1% (g) Rate of correction 8 Volt/second for single phase and 13 V/seconds for phase to phase, ( h) Efficiency more than 95%,Type of load : three phase , unbalanced type, (j) Digital display with multi-functional meter Protections:- a. Over load/Short Circuit protections on input side by MCCB 400 Amp 3 pole 36 KA (thermal magnetic release adjustable) b. High/Low voltage cut off c. By pass arrangement in case of emergency by on load changeover switch 4 pole , suitable Amp rating as per OEM recommendation d. Single phase sequence change protection Capacity:- 250 KVA

Supply, install, testing and commissioning of Servo controlled voltage stabilizer ( Confirming to BIS 9815:Part 1 :1994) 400 KVA ,Three phase,50 Hz, Naturally Oil cooled , indoor ,unbalanced type, copper wound, metallic body duly powder coated with lifting Hooks four nos ,digital display type, relay free smooth and silent operation with 1st filling of Transformer oil up to level as per OEM recommedation having following specification:- (a) Input voltage 340V-480V (b) Output voltage stabilized at 415V +- 1% (c ) Rated frequency 50 Hz, (d) No distortion in wave form (e) Response time not to exceed 20 mile second ( f) sensitivity (+/-)1% (g) Rate of correction 8 Volt/second for single phase and 13 V/seconds for phase to phase, ( h) Efficiency more than 95%,Type of load : three phase , unbalanced type, (j) Digital display with multi-functional meter Protections:- a. Over load/Short Circuit protections on input side by MCCB 630 Amp 3 pole 36 KA (thermal magnetic release adjustable) b. High/Low voltage cut off c. By pass arrangement in case of emergency by on load changeover switch 4 pole , suitable Amp rating as per OEM recommendation d. Single phase sequence change protection Capacity:- 400 KVA

Supply, install, testing and commissioning of Servo controlled voltage stabilizer ( Confirming to BIS 9815:Part 1 :1994) 500 KVA ,Three phase,50 Hz, Naturally Oil cooled , indoor ,unbalanced type, copper wound, metallic body duly powder coated with lifting Hooks four nos ,digital display type, relay free smooth and silent operation with 1st filling of Transformer oil up to level as per OEM recommedation having following specification:- (a) Input voltage 340V-480V (b) Output voltage stabilized at 415V +- 1% (c ) Rated frequency 50 Hz, (d) No distortion in wave form (e) Response time not to exceed 20 mile second ( f) sensitivity (+/-)1% (g) Rate of correction 8 Volt/second for single phase and 13 V/seconds for phase to phase, ( h) Efficiency more than 95%,Type of load : three phase , unbalanced type, (j) Digital display with multi-functional meter Protections:- a. Over load/Short Circuit protections on input side by MCCB 750 Amp 3 pole 36 KA (thermal magnetic release adjustable) b. High/Low voltage cut off c. By pass arrangement in case of emergency by on load changeover switch 4 pole , suitable Amp rating as per OEM recommendation d. Single phase sequence change protection Capacity:- 500 KVA

Supply, laying, jointing, commissioning and testing XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured electric cable in trenches/along poles/through duct (Heavy duty) with aluminium conductor, 11/ 6.35KV grade of size 120 Sqmm 3 Core complete all as specified and directed by Engr-in-Charge.

Supply, installation, testing & commissioning 11 KV Outdoor type floor mounted Load Break switch with internal copper bus bars connected with Existing 3 way and 4 way RMU, consisting of 630 Amp fixed motorized Load Break Switch to be coupled to existing ABB Make CCV+M RMU. All live parts, bus bars, LBSs connections of Load Break Switch shall be enclosed in one tank to avoid multiple interconnections & sealed for life robotically welded non magnetic and non ferrite grade stainless steel tank Grade 304 of minimum 2.5 mm thick having IP67 degree of protection filled with SF6 gas as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200. The unit shall have front cable entry for ease of installation and shall have site replaceable bushings for ease of troubleshooting during breakdown.Load Break switch shall be complete with all accessories such as Terminal boots, VPIS, cable supports, all front cable terminations, mechanical indications for Load break switch ON/OFF, Manometer as per with IEC standards 62271-200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120. Extensible Bushings, if applicable shall be bolted type top mounted outside the tank for connection of external bus bar. Also, the outer enclosure shall cover the full length of the switchgear, to ensure IP3X+IP54 protection for cable boxes.

The unit shall be internal arc proof 21kA for 1 sec. for tank+Cable Box and tested and totally safe for human beings. The gas release & personnel safety with internal arc proof shall not depend on plinth design. The release of gas to be from the top of the unit, so that, even if the person is operating the unit, opening the cover, & there are personnels near the sides of the RMU/plinth, top release will ensure their safety. The release in no case should be from any side or bottom of the unit, as the same is unsafe for the operating personnel/pedestrian or general public. Bidder shall provide type test report to prove compliance to the ‘Internal fault IAC-AFLR as per IEC 62271-200.Internal arc proof & testing shall be done with enclosure door in open condition, with switching devices in operation mode. The Vacuum Bottle shall be of same make as that of RMU to ensure better life cycle optimization for the RMU. The Manufacturer shall furnish performance Certificate for similar kind of RMUs in their own legal Name. Any Joint venture certificates / partnership with other firms shall not be considered. The unit shall include the following accessories with all necessary standard fitting required at site complete all as specified and as directed.

630A Load Break Switch module for making of fault current along with Earth Switch of full making capacity-1 nos. Short time withstand current - 21KA/ 3 sec Making Capacity - 52.5kAp Auxiliary contacts - 1NO + 1NC Power frequency withstand voltage - 28kV Impulse withstand voltage - 75kV Nominal operating gas pressure - 1.4 Bar abs. Front cover mechanism - IP2X Cable covers - 3X Snap action mechanism for manual/motorized operation with 24VDC suitability Cable box for front termination of the cable suitable up to 3 core 300 Sqmm, 11 KV XLPE cable Right angle non-touch proof Termination boots - 1 Set (R,Y,B) Coupling Kit to couple this Module to existing ABB Make CCV+M RMU.

Supply and fix cable jointing kit for 11 KV grade cable for indoor termination , heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 95 sqmm

Supply and fix cable jointing kit for 11 KV grade cable for indoor termination , heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 120 sqmm

Supply and laying LT cable PVC/XLPE insulated 1100 volts armoured with aluminium conductor of 500 Sqmm 3.5 core size, connecting and jointing up at either ends with suitable size aluminium lugs as directed by Engineer-in-Charge.

Supply and laying LT cable PVC/XLPE insulated 1100 volts armoured with aluminium conductor of 630 Sqmm single core size, connecting and jointing up at either ends with suitable size aluminium lugs as directed by Engineer-in-Charge.

Excavation in trenches not exc 1.5m wide not exc 1.5m in depth for foundation / fixing pole/ laying cable and pipe line etc or for main hole etc not exc 10 Sqm on plain and getting out in soft / losse soil complete all as specified and as directed.

M&L for providing dry river sand as in sand cushioning to under ground electgric cable including punning down of sand in layer complete all as specified and as directed. Note : For measurement & payment purpose, punned thickness of sand only shall be considered.

Supply and laying in replacement burn brick, sub class `B' Old size having minimum compressive strength 75 Kg/Sqm laid flat at right angle on the cable for cable covering complete all as specified and as directed.

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

Removing the surplus soil to a distance not exceeing 50 meter and depositing where directed at level not exc 1.5 mtr above the stgarting point complete all as specified and directed.

Earthing complete with galvanised steel earth plate electrode 60×60cm.× 6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to galvanised earth lead using galvanised iron strip 32×6mm as earthing lead 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 all as specified or indicated including testing on completion

N K BUILDERS

MV Engineers And Contractors

Leo Air and Power Solution pvt Ltd.

M P TYAGI ENGINEERS AND CONTRACTORS

Vijaypower Generators Limited

mayur enterprises

Vardhman Airport Solutions Pvt Ltd