PROVN OF 01 x 500 KVA DISTRIBUTION TRANSFORMER ALONG WITH ITS CONNECTED ACCESSORIES AT CERTAIN UNIT AND PROVN OF 02x4 WAY HT 11 KV RMV FOR DEPOT AREA OF CERTAIN UNIT AT ARMY AREA BANAR UNDER GE BANAR

M&L for Cutting the road / hard standings and excavating in trenches not exceeding 0.40 mtr wide and not exc 0.80 mtr deep across the road for laying of cable including making good the excavated portion by means of PCC 1:2:4, type B1 using 20mm graded stone aggregate complete and matching with the surroundings complete all as specified & directed by Engr-in-charges.

Supply and fix straight through heat shrinkable cable joint kit including all material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm cable of 11000 Volt (Earthed) grade all as per manufacturer recommendation complete all as specified & directed by Engr-in-charges.

Supply, installing, testing and commissioning of outdoor type plinth mounted step down transformer, 11 KV/433 Volts (at no load), AC 3 phase 50 Hz, 500 KVA capacity,Level 3, core type, double copper wound, oil immersed, naturally cooled, Oil Natural-Air Natural (ON AN), with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector group DYN-11 with Neutral brought out on secondary side (LV side) and having tapings at +10% to -10% in steps of 2.5% on HV side to be changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 40 degree celsius in oil and 45 degree celsius in HV/LV winding when measured by resistance method after continuous full load run on an ambient temp of 40 degree celsius. The transformer shall be of BOLTLESS core design. Transformer shall be double wound, core type wil low loss, non ageing, high permeability PRIME GRADE, CRGO with M4 Grade or Better, perfectly insulated and clamped to minimize noise and vibrations. complete all as specified & directed by Engr-in-charges. (Make :- Schneider/RTS/Indian Transformer/Crompton Greaves/Volt Amp Ltd Baroda)

(f) One no 100 mm dia, dial type thermometer, vapour pressure type, having range0-120 degree celsius with metal guard having maximum perimeter temperature reading indicator with re-setting device. (g) Two earthing terminals on tank cover to facilitate fixing of 50 x 6 mm galvanised iron earth strip for earthing of body. (h) Rating plate and terminal marking plate. (j) Extra bushing for neutral, in the LT cable box for providing independent set of earthing for neutral. (k) First fill of new and unused transformer oil, IS-335 marked, filtered and tested upto 45 KV dielectric strength at 2.5 mm air gap between testing electrodes (l) Providing adequate size and nos of channels, embeded in floor, for movement of transformer. (m) roller wheel. (n) Other accessories as per manufacturer design. (o) PCC foundation/ platform for transformer 500 KVA as per manufacturer specification and drg having bearing power more than 1 ton including demolition of existing. NOTE : Transformer shall be supplied inclusive of initial oil filling to appropriate level of insulation oil with desired dielectric strength.

Supply Install testing & commissioning of 11KV Extensible Outdoor duty (IP 55 enclosure) SF6 gas insulated 4-way manual operated Ring Main Unit (RMU) comprising of 2 Nos Load Break Switch and 2 Nos Outgoing 630 Amps trolly mounted Vacuum Circuit Breaker unit, with breaking capacity 21KA/3sec (Internal Arc Classification AFLR 21kA1sec with Bottom Exhaust both for tank and cable box as per IEC 62271-200),enclosed in robotically welded stainless steel tank having IP67 Degree of Protection, leak rate of SF6 gas less than 0.1% and tested as per IEC60056/60694/60298. Protection CTs shall be ring core type, CT ratio at incomer: 30-60/1 Amp., Number of Short Circuit Operations at rated short circuit current of 21 kA for Breaker - 50 Nos. Vaccum Interruptor, protection relay and RMU shall be of same make for better coordination. The FPI shall be integral part of RMU. Minimum one no load break switch per RMU shall be equipped with FPI to facilitate quick detection of faulty section of line. Circuit breaker shall have a min of 2000 mechanical and 2000 electrical operations at rated current and 50 nos of operations at rated short circuit current. Disconnector and earthswitch shall have a min of 1000 (M1) mechanical operations complete all as specified & directed by Engr-in-charges. (Make :- Siemens/ABB/Schneider/Crompton Greaves/L&T)

(A) NOTE:- Others details:- System Particulars: (i) Nominal System Voltage :11kV. (ii) Voltage variation on supply side : As per IEC. (iii) Corresponding Highest System Voltage: 12kV. (iv) Frequency : 50 Hz with ± 3 % tolerance. (v) Number of Phase : 3 Phases. (vi) Busbar material : Copper, (vii) Body earthling: Solidly earthed. (viii) Fault level (minimum) kA /Sec : 21/3). (ix) Lightning Impulse Withstand Voltage (kVp) : 75 (x) One minute dry/wet power frequency withstand voltage primary (kV rms) : 28KV (xi) Rated Dynamic Withstand Current (kAp) : 52.5KA. (xii) Number of Short Circuit Operations at rated short circuit current of 21 kA for Breaker - 50 Nos. (xiii) Earth switch with its own making capacity independent of breaker with own snap action mechanism for fast closing independent of operator action (E3 Class).

(B) Applicable Standards for this RMU scope of work - IEC 62271-200. (i) The design, manufacture and performance of the Ring Main Unitsshall comply with all currently applicable statutes, regulations and safety codes. Nothing in this specification shall be construed to relieve the bidder off his responsibilities. (ii) Ring Main Units shall conform to the latest applicable, IEC 62271-100, IEC 62271-200. (iii) All live parts, bus bars, shall preferably be enclosed in stainless steel tank as per IEC. The RMU shall be type tested for internal arc test of 21KA/1 sec AFL with Bottom Exhaust for Safety of Personnel for both Tank as well as Cable Compartment as per IEC62271-200. The outer enclosure shall have IP 55 protection for complete switchgear; however it should be Top Opening Canopy & with dedicated IP 55 Cable Compartment; Indoor RMU placed inside Outdoor Enclosure should not be acceptable. The protection relay shall be for 3 O/C + 1E/F (IDMT Type) Self powered numerical protection relay with low and high set of over current and earth fault , MODBUS communication along with RS 485 Port. (iv) Internal Arc Classification should be with Bottom exhaust only. RMUs should be manufactured, inspected and invoiced from the OEM factory (v) The SF6 gas filled 11 kV, 630 Amps, extensible type, Outdoor to be supplied against this specification shall be suitable for satisfactory continuous operation as per IEC.

Supplying, laying, jointing and testing of XLPE insulated PVC outer seathed and (earthed) PVC inner sheathed, galvanised steel strip or wire armoured, electric power cable (heavy duty) with aluminum conductors, 11 KV(E) grade and conforming to IS : 7098 and, of size 120 sqmm, 3 core, laid in trenches / ducts / encased in GI pipe / fixed to pole, complete all as specified & directed by Engr-in-charges. Note : Earth work, protection pipe and Cable Joints etc shall be measured and paid separately. Note :- Excavation, earth work ,cable protection , sand fillings shall be measured and paid separately under respective items of schedule.

Supply, laying, testing & commissioing of 400 Sqmm 3.5 core size XLPE insulated, PVC sheathed, galvanised steel strip or wire armoured, electric power cable (heavy duty) with multistranded aluminum conductors, IS 7098 Part I marked, suitable for LT 1100 Volt system,laid in trenches / ducts / fixed on poles / walls / laid under roads / paths / drain / culverts or encased in GI pipe including jointing & testing complete all as specified & directed by Engr-in-charges. Note :- Excavation, earth work ,cable protection , sand fillings shall be measured and paid separately under respective items of schedule.

All as per Ser No 6 above but size 300 sqmm 3.5 core complete all as specified & directed by Engr-in-charges.