REPLACEMENT OF TRANSFORMER AT KV SCHOOL BAIRAGARH BHOPAL UNDER GE BHOPAL

Amount

Taking down existing old unserviceable transformer of any type and size after disconnecting all incoming and outgoing electrical connections without any damage and safely depositing at KV School Store yard, SI lines complete all as specified and as directed.

Supplying, installing, connecting, testing & commissioning mineral oil immersed, natural air-cooled, outdoor type, double wound (copper) distribution transformer, three phase, 160 kVA rating, non-sealed type, 50 Hz rated frequency, 33 kV high voltage and 415 V low voltage nominal system voltage, minimum 75 kVp basic insulation level, 33000 V/ 433-250 V no-load voltage ratio, connection (vector) symbol Dyn11, 30⁰ positive phase displacement, off circuit tap changing arrangement for voltage variations of +2.5% to -5% in steps of 2.5% for variation of HV, minimum energy efficiency level 2 (Star 2 as per the notification issued by the Central Government, in consultation with the Bureau of Energy Efficiency and including all the amendments issued up-to-date), 4.5% impedance, ONAN type cooling all as per IS-1180 (Part 1): 2014 including amendment upto and including amendment No. 4 dated 04 Mar 2021 complete with all fittings, accessories and item as specified and as directed. Note: - The energy efficiency level higher than the minimum energy efficiency level as specified here shall be provided without any extra cost in case the transformer of minimum energy efficiency level is not available.

M & L for earthing complete with copper plate earth electrode 600 mm X 600 mm X 3.15 mm 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 earthing lead of 20 mm X 3 mm copper strip by means of bolts, nuts, check nuts and washers of galvanised iron from earth plate to test point upto 7.5 metre including all as shown in electrical plate No. 3 of SSR Part I (2009) including necessary concrete chamber in cement concrete M15 (Nominal Mix) using 20 mm nominal size coarse aggregate, precast RCC cover slab in cement concrete M15 (Nominal mix) using 20 mm nominal size coarse aggregate of size 40 cm X 40 cm X 5 cm reinforced with 8 mm dia TMT bars @ 150 mm c/c both ways with one handle for lifting made out of 8 mm dia bar, GI funnel, GI wire mesh filter, 20 mm dia GI pipe medium grade for watering, 40 mm dia GI pipe medium grade for protection of earthing lead, charcoal or coke and salt in alternate layers including necessary excavation and earth work in any type of soil/ strata and testing complete all as specified and as directed by the Engineer-in-charge.

S & F earth continuity conductor 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 any other indicated situation for loop earthing etc. as required 20 mm X 3 mm copper strip complete all as specified and as directed.

M & L for earthing complete with galvanised steel plate earth electrode 600 mm X 600 mm X 6 mm 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 earthing lead of 32 mm X 6 mm galvanised mild steel strip by means of bolts, nuts, check nuts and washers of galvanised iron from earth plate to test point upto 7.5 metre including all as shown in electrical plate No. 3 of SSR Part I (2009) including necessary concrete chamber in cement concrete M15 (Nominal Mix) using 20 mm nominal size coarse aggregate, precast RCC cover slab in cement concrete M15 (Nominal mix) using 20 mm nominal size coarse aggregate of size 40 cm X 40 cm X 5 cm reinforced with 8 mm dia TMT bars @ 150 mm c/c both ways with one handle for lifting made out of 8 mm dia bar, GI funnel, GI wire mesh filter, 20 mm dia GI pipe medium grade for watering, 40 mm dia GI pipe medium grade for protection of earthing lead, charcoal or coke and salt in alternate layers including necessary excavation and earth work in any type of soil/ strata and testing complete all as specified and as directed by the Engineer-in-charge.

S & F earth continuity conductor 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 any other indicated situation for loop earthing etc. as required 32 mm X 6 mm galvanised mild steel strip complete all as specified and as directed.

Designing, manufacturing, supplying, fixing, erecting, testing and commissioning LT APFC panel with capacitor bank, conforming to IS 16636: 2017, 80 kVAR, outdoor installations, rated system voltage of the panel 440 V ± 10%, rated frequency 50 Hz, 3 phase, 4 wire, delta connected, rated impulse withstand voltage 8 kV, free standing, pedestal mounted, made of cold rolled close annealed sheet of minimum 2 mm thick for the load bearing structure and minimum 1.6 mm thick for door and partition, 50⁰C ambient temperature, IP 65 Ingress Protection, 320 Amp rated copper busbar, metallized polypropylene (MPP) dielectric type, resin filled box type, self-healing type, shunt capacitor as per IS 13340: 2012, switching configuration: 40 kVAR X 1 No + 20 kVAR X 1 No + 10 kVAR X 1 No + 5 kVAR X 1 No + 2.5 kVAR X 2 Nos (total six steps), suitable protection in line with IEC and IS for overheating, over current, earth fault, over voltage, short circuit, thermal overload and over pressure, suitable size power and control cable as per Indian Standards, powder coated in grey colour, including microprocessor based automatic power factor correction controller with human machine interface, cooling fans, capacitor duty contactors, 7% detuned reactors, two earth terminals in the panel and as per the details mentioned below complete all as specified and as directed and shall be including the followings: -

(A) INCOMING: (i) MCCB rated current(In): 160A, ultimate short circuit breaking capacity (Icu): 36 kA, service short-circuit breaking capacity (Ics): 100% of Icu, impulse withstand voltage (Uimp): 8 kV, insulation voltage (Ui): 690 V, utilization category: A, pollution degree 3, degree of protection: IP40, adjustable thermal (80% to 100%) and adjustable magnetic (5-10 times) setting, four pole, suitable for 415 V, 50 Hz AC supply – 1 No (ii) Microprocessor based automatic power factor correction controller (minimum 6 steps)- 1 No (iii) Cooling Fans to be provided for forced cooling.

(B) OUTGOING: (a) (i) 2.5 kVAR MPP dielectric type, resin filled box type, self-healing type, shunt capacitor- 2 Nos (ii) MCCB rated current(In): 125A, ultimate short circuit breaking capacity (Icu): 36 kA, service short-circuit breaking capacity (Ics): 100% of Icu, impulse withstand voltage (Uimp): 8 kV, insulation voltage (Ui): 690 V, utilization category: A, pollution degree 3, degree of protection: IP40, adjustable thermal (80% to 100%) and adjustable magnetic (5-10 times) setting, three pole, suitable for 415 V, 50 Hz AC supply – 2 Nos (iii) 2.5 kVAR capacitor duty contactors – 2 Nos (iv) ON indication lamp – 2 Nos (v) 230 V AC ON, OFF push button with 2NO + 2 NC – 4 Nos (vi) 2.5 kVAR 7% detuned reactor copper wound – 2 Nos

(b) (i) 5 kVAR MPP dielectric type, resin filled box type, self-healing type, shunt capacitor- 1 No (ii) MCCB rated current(In): 15A, ultimate short circuit breaking capacity (Icu): 36 kA, service short-circuit breaking capacity (Ics): 100% of Icu, impulse withstand voltage (Uimp): 8 kV, insulation voltage (Ui): 690 V, utilization category: A, pollution degree 3, degree of protection: IP40, adjustable thermal (80% to 100%) and adjustable magnetic (5-10 times) setting, three pole, suitable for 415 V, 50 Hz AC supply – 1 No (iii) 5 kVAR capacitor duty contactors – 1 No (iv) ON indication lamp – 1 No (v) 230 V AC ON, OFF push button with 2NO + 2 NC – 2 Nos (vi) 5 kVAR 7% detuned reactor copper wound – 1 No

(c) (i) 10 kVAR MPP dielectric type, resin filled box type, self-healing type, shunt capacitor- 1 No (ii) MCCB rated current(In): 20 A, ultimate short circuit breaking capacity (Icu): 36 kA, service short-circuit breaking capacity (Ics): 100% of Icu, impulse withstand voltage (Uimp): 8 kV, insulation voltage (Ui): 690 V, utilization category: A, pollution degree 3, degree of protection: IP40, adjustable thermal (80% to 100%) and adjustable magnetic (5-10 times) setting, three pole, suitable for 415 V, 50 Hz AC supply – 1 No (iii) 10 kVAR capacitor duty contactors – 1 No (iv) ON indication lamp – 1 No (v) 230 V AC ON, OFF push button with 2NO + 2 NC – 2 Nos (vi) 10 kVAR 7% detuned reactor copper wound – 1 No

(d) (i) 20 kVAR MPP dielectric type, resin filled box type, self-healing type, shunt capacitor- 1 No (ii) MCCB rated current(In): 40 A, ultimate short circuit breaking capacity (Icu): 36 kA, service short-circuit breaking capacity (Ics): 100% of Icu, impulse withstand voltage (Uimp): 8 kV, insulation voltage (Ui): 690 V, utilization category: A, pollution degree 3, degree of protection: IP40, adjustable thermal (80% to 100%) and adjustable magnetic (5-10 times) setting, three pole, suitable for 415 V, 50 Hz AC supply – 1 No (iii) 20 kVAR capacitor duty contactors – 1 No (iv) ON indication lamp – 1 No (v) 230 V AC ON, OFF push button with 2NO + 2 NC – 2 Nos (vi) 20 kVAR 7% detuned reactor copper wound – 1 No

(e) (i) 40 kVAR MPP dielectric type, resin filled box type, self-healing type, shunt capacitor- 1 No (ii) MCCB rated current(In): 80 A, ultimate short circuit breaking capacity (Icu): 36 kA, service short-circuit breaking capacity (Ics): 100% of Icu, impulse withstand voltage (Uimp): 8 kV, insulation voltage (Ui): 690 V, utilization category: A, pollution degree 3, degree of protection: IP40, adjustable thermal (80% to 100%) and adjustable magnetic (5-10 times) setting, three pole, suitable for 415 V, 50 Hz AC supply – 2 Nos (iii) 40 kVAR capacitor duty contactors – 1 No (iv) ON indication lamp – 1 No (v) 230 V AC ON, OFF push button with 2NO + 2 NC – 2 Nos (vi) 40 kVAR 7% detuned reactor copper wound – 1 No Note: (a) The kVAR rating of capacitor mentioned is for rated voltage of 440 V. However, the capacitor shall be provided for rated voltage of 480 V by enhancing the kVAR rating suitably.

Excavating in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. or for cable laying or not exceeding 10 sqm on plan and not exceeding 1.5 m in depth and getting out in hard/ dense soil complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm in soft/ loose/ hard/ dense soil complete all as specified and as directed.

Removing excavated material (soils) not exceeding 50 m and depositing where directed at a level n exc. 1.5 m above the starting point

M & L for cement concrete in foundation, filling and mass concrete in M7.5(Nominal Mix) using 40 mm nominal size graded crushed stone aggregate complete all as specified and as directed.

M & L for brick work with sub class 'B' bricks, non-modular sizes as per IS 1077: 1992, straight or curved on plan exceeding 6 m mean radius built in cement mortar 1:6 complete all as specified and as directed.

Material and labour for plastering 10 mm thick on fair faces of brick work or concrete surfaces on ceilings in cement mortar 1:6 finished even and fair complete all as specified and as directed.

M & L for loose filling with broken stone or boulder aggregates of gauge 40 to 80 mm in soakage pits, soakage wells, on open space etc. complete all as specified and as directed.

Disconnecting, taking out old unserviceable under ground cable of rated voltage 19 kV/ 33 kV, nominal cross sectional area of main conductor 185 sqmm, upto 4 core, any type from trenches including taking out concrete cable cover/ bricks etc. including removing materials to store for keeping in safe custody or for reuse or for taking credit complete all as specified and directed by the Engineer-in-Charge.

Supply, laying and testing cross linked polyethylene (XLPE) insulated, PVC sheathed cables for working voltages 19 kV/ 33 kV, three phase, earthed system, 3 core, screened, armoured power cable, 185 sqmm of nominal area of conductor, aluminium conductor, ISI marked as per IS 7098 (Part-II): 2011 laid in trenches or under floors making all connections with necessary glands lugs bushing complete all as specified and as directed.

S & F MCCB rated current(In): 250A, ultimate short circuit breaking capacity (Icu): 36 kA, service short-circuit breaking capacity (Ics): 100% of Icu, impulse withstand voltage (Uimp): 8 kV, insulation voltage (Ui): 690 V, utilization category: A, pollution degree 3, degree of protection: IP40, adjustable thermal (80% to 100%) and adjustable magnetic (5-10 times) setting, four pole, suitable for 415 V, 50 Hz AC supply complete all as specified and as directed.

Supply and fix metal oxide surge arrester without gap for AC system as per IEC 60099-4: 2014, outdoor type, polymer housing, single column and single phase construction, distribution class, heavy duty, nominal discharge current 10 kA, repetitive charge transfer rating (Qrs) more than 0.4 C, thermal charge transfer rating (Qth) more than 1.1 C, nominal system voltage 33 kV, highest system voltage 36 kV, rated voltage of arrester 27 kV, continuous operating voltage 21.6 kV, temporary overvoltage (31.50 kV for 1 s, 29.80 kV for 10 s, 28.00 kV for 100 s), rated short circuit current 20 kA, low short circuit current 600 A, insulation withstand level (lightning impulse voltage 1.2/ 50 µs) 170 kV, lightning impulse residual voltage (8/20 µs) at nominal discharge current maximum 86 kV, high current impulse withstand capability (4/10 µs) 100 kA, minimum creepage distance 900 mm complete all as specified and as directed.

S R BUILDERS AND SUPPLIERS