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| 1 | M&L for disconnecting of HT/LT connections from old transformer, OCB, HT switch and dismantling of transfomer, OCB, HT switch and safely transfer to MES store yard complete all as specified and directed. |
| 2 | Supply, installation, testing and commissioning of plinth mounted step down outdoor type energy efficient level -2 distribution transformer HT 11 KV, 3 Phase, LT 433 V, 4 wire capacity 100 KVA, copper wound, oil immersed laminated iron core naturally cooled with external cooling tubes/fins, type delta connected on primary HT side and star connected on secondary LT side in accordance with vector symbol group DYN -11 (Vector ground - 4) with natural brought on secondary (LT) side & having tapping in equal steps of 2.5% from (±) 5% to (±) 7.5% to be changed by means of hand operated off load tap changing gear, so as to change/ correct LT voltage on secondary side confirming to IS 1180 Part- I 2014 including provision of all neccessary standard fittings and mainly comprising of the following : (a) One cable box on HT side (Primary side) consisting of 3 Nos porcelain bushing with copper rods complete with nuts & bolts.(b) One cable box on LT side (Secondary side) consisting of 4 Nos porcelain bushing with copper rods complete with nuts & washer.(c) Oil conservator oil level gauge. |
| 3 | Item No 2 Contd/... (d) Dehydrating breather with first fill of dehydrating agent (Silica Gel)(e) Explosion vent, thermometer pocket on tank cover, oil drain filter valve, lifting lugs, oil filling hole with cap/ plug air release valve plug & 4 Nos plain solid cast steel detachable rollers.(f) One 100mm dia dial type thermometer, vapour pressure type, having range 0- 120 degree Celsius having maximum temprature reading indicator with resetting.(g) Two earthing terminals on tank to facilitate fixing of 32x6 mm galvanised iron earth strip for earthing body.(h) Rating plate & terminal marking plate.(j) Extra bushing for neutral, in the LT cable box for providing independant set of earthing for neutral.(k) First filling of transformer oil, IS- 335 Marked within (Make - Savita/ Power link) filter & tested upto 50 KV dielectric strength at 2.5 mm air gap between electrodes. |
| 4 | Supply, installation, testing and commissioning of plinth mounted step down outdoor type energy efficient level -2 distribution transformer HT 11 KV, 3 Phase, LT 433 V, 4 wire capacity 200 KVA, copper wound, oil immersed laminated iron core naturally cooled with external cooling tubes/fins, type delta connected on primary HT side and star connected on secondary LT side in accordance with vector symbol group DYN -11 (Vector ground - 4) with natural brought on secondary (LT) side & having tapping in equal steps of 2.5% from (±) 5% to (±) 7.5% to be changed by means of hand operated off load tap changing gear, so as to change/ correct LT voltage on secondary side confirming to IS 1180 Part- I 2014 including provision of all neccessary standard fittings and mainly comprising of the following : (a) One cable box on HT side (Primary side) consisting of 3 Nos porcelain bushing with copper rods complete with nuts & bolts.(b) One cable box on LT side (Secondary side) consisting of 4 Nos porcelain bushing with copper rods complete with nuts & washer.(c) Oil conservator oil level gauge.(d) Dehydrating breather with first fill of dehydrating agent (Silica Gel)(e) Explosion vent, thermometer pocket on tank cover, oil drain filter valve, lifting lugs, oil filling hole with cap/ plug air release valve plug & 4 Nos plain solid cast steel detachable rollers.(f) One 100mm dia dial type thermometer, vapour pressure type, having range 0- 120 degree Celsius having maximum temprature reading indicator with resetting. |
| 5 | Item No 3 Contd/... (g) Two earthing terminals on tank to facilitate fixing of 32x6 mm galvanised iron earth strip for earthing body.(h) Rating plate & terminal marking plate.(j) Extra bushing for neutral, in the LT cable box for providing independant set of earthing for neutral.(k) First filling of transformer oil, IS- 335 Marked within (Make - Savita/ Power link) filter & tested upto 50 KV dielectric strength at 2.5 mm air gap between electrodes. |
| 6 | Supply, installation, testing and commissioning of plinth mounted step down outdoor type energy efficient level -2 distribution transformer HT 11 KV, 3 Phase, LT 433 V, 4 wire capacity 250 KVA, copper wound, oil immersed laminated iron core naturally cooled with external cooling tubes/fins, type delta connected on primary HT side and star connected on secondary LT side in accordance with vector symbol group DYN -11 (Vector ground - 4) with natural brought on secondary (LT) side & having tapping in equal steps of 2.5% from (±) 5% to (±) 7.5% to be changed by means of hand operated off load tap changing gear, so as to change/ correct LT voltage on secondary side confirming to IS 1180 Part- I 2014 including provision of all neccessary standard fittings and mainly comprising of the following : (a) One cable box on HT side (Primary side) consisting of 3 Nos porcelain bushing with copper rods complete with nuts & bolts.(b) One cable box on LT side (Secondary side) consisting of 4 Nos porcelain bushing with copper rods complete with nuts & washer.(c) Oil conservator oil level gauge.(d) Dehydrating breather with first fill of dehydrating agent (Silica Gel)(e) Explosion vent, thermometer pocket on tank cover, oil drain filter valve, lifting lugs, oil filling hole with cap/ plug air release valve plug & 4 Nos plain solid cast steel detachable rollers.(f) One 100mm dia dial type thermometer, vapour pressure type, having range 0- 120 degree Celsius having maximum temprature reading indicator with resetting. |
| 7 | Item No 4 Contd/... (g) Two earthing terminals on tank to facilitate fixing of 32x6 mm galvanised iron earth strip for earthing body.(h) Rating plate & terminal marking plate.(j) Extra bushing for neutral, in the LT cable box for providing independant set of earthing for neutral.(k) First filling of transformer oil, IS- 335 Marked within (Make - Savita/ Power link) filter & tested upto 50 KV dielectric strength at 2.5 mm air gap between electrodes. |
| 8 | Supply, install, testing and commissioning of indoor type vacuum circuit breaker Panel for capacity 11 KV, 800 Amp incoming cum outgoing, 3 Phase, 3 wire, 50 Hz, having a fault level of 250 MVA at 11 KV, 13.1 KA breaking capacity totally enclosed metal clad switch gear, single bus bar for each phase, floor mounting, metal clad, Indoor extensible type flush fronted, Draw out type, horizontal/ vertical isolation type with Electrical and Mechanical interlock and automatic safety shutter gear including padlocking arrangement, isolation plugs, assembly of 3 vaccum interrpupters, with epoxy support insulations and self - aligning finger type isolating contacts, truck having integral racking with necessary interlocks (for insertion and withdrawal of VCB), manual and automatic motor charged independent closing/ tripping spring, trip free operating mechanism with closing and tripping push buttons and mechanical breakere, including inbuilt battery back up system & all standard fitting and accessories of following specification. Note : Relays, CTs & PTs shall be tested and set as per site requirement at site by qualified Engineer in presence of Engr-in-Charge. (i) Bus bar chamber with 3 phase, copper bus bar 800 Amp rating duly insulated - 01 set (set of three). (ii) Electrical trip coil 110 V DC - 1 No. (iii) Electrical shunt coil 110 V DC – 01 No. (iv) CT Chamber incorporating 3 Nos single phase rasin cast current transformer ratio 100/5-5 class 1.0 for metering & class 5P10 for protection and burden 30 VA - 1 No. |
| 9 | Item No 5 Contd/.. (v) 3 Phase, 3 Limb draw out type bus connected Epoxy potentional transformer, ratio 11KV/√3/110V/√3 AC acuuracy 1.0, burden 200 VA - 01 No. (vi) Digital ammeter 0 to 100 Amp,( 100% of CT ratio) for 3 phase - 01 No. (vii) Digital voltmeter rating 0 to 12 KV, for 3 phase - 01 No. (viii) Digital load meter for amps, volts, KW, KVA, KVAR, and PF type QUASER of Enercon/ L&T - 01 No. (ix) Three phase over current and earth fault relay digital numerical auxillary supply 20-110V AC/DC CT out put contacts 2 No + NC, rating-5, O/C Is= 20-200% in step of 5% E/F Os=5-80% in step of 5%, the features and specification confirming to model No. MI COM P 122 of AREVA or equivalent make of ABB or Schnider. (x) Auxiliary relay with 4 N/O & N/C - 1 Set. (xi) TNC switch and LR swich - 1No. (xii) Heat control switch- 1 No. (xiii) RYB, ON/Off, spring charged and discharged & VCB trip indications- 1 set. (xiv ) Space heater with thermostat - 1 No. (xv) Operating counter - 1 No. (xvi) Rear cable box suitable for 240 Sqmm 3 core XLPE cable - 2 Nos. (xvii) Spring charging motor with starter 230 V, AC -1 No. |
| 10 | Supply, install, testing and commissioning of 11 KV, 630 Amp Load Break Switch with earth switch complete with all accessories, mounting structure, control wiring and earthing required for safe and satisfactory operation. The equipment shall be suitable for indoor installation in medium voltage distribuion systems and as per following specifications:- (i) Rated voltage : 11 KV (ii) Current rating : 630 Amp (iii) Voltage : 11 KV (iv) Ttype of break : Air Break (v) Rated voltage : 12 KV (vi) Rated insulation voltage : 28 KV RMS |
| 11 | Supply, install, testing, commissioning complete 11KV Ring Main Unit for 3 Nos (01 for incoming and 02 Nos outgoing) breaker of capacity 630 Amps each, outdoor type, copper bus bar of 50x10mm with rupturing capacity of 350MVA with enclosure for mounting 01 Nos SF6 Breakers and 02 Nos Load Break Switch with interlocking arragement as specified in IE Rules & for clearance, safety and operation inside the enclosure, CPRI approved including cable termination chamber. SF circuit Breaker shall be front access. rating for single SF6 circuit breaker are as follows:- (Note: Rates shall be inclusive with 01 Nos SF6 Circiut Breakers for incoming and 02 Nos outgoing load break switch) Circuit breaker, Rated Current: 630A, closing and Tripping coil: 240V DC, Spring Charging motor : 230V AC, STC:26.3KA for 03 sec BIL: 12/28/75KVP CT Ratio- 200-100/5-5A Core 1 : Burden-10VA, class:1.0 Core 2 : Burden-10VA, class:5P10 STC :25KA for 1Sec BIL: 12/28/75KVP Potential Transformer with 3.15A HT Fuse ( Fixed type) PT Ratio : 11KV/RT3/110/RT3/110/3 Core 1 : Burden-50VA, class:1.0 Core 2 : Burden-50VA, class:3P BIL: 12/28/75KVP V.F 1.2 are continuous & 1.9 for 8 hours |
| 12 | Item No 7 Contd/...Protection Relay(i) 3 over current +1E/F Relay (RS-485 communicable)(ii) Protection 50,51, 50N.51N, 86(iii) CT Secondary-5A(iv) Mounting : Flush mounting(v) Aux supply : 24V DC in builtMaster Trip Relay ( Hand Reset Electromechanical type)Protection-86Mounting-Flush MountingAux supply : 24V DC Metering Equipment (Incoming & Outgoing)Digital Multifunction Meter (RS-485-Communicable), Class-1.0, Cut out size 92x92, Aux Supply : 230V AC Digital Voltmeter, Class 1.0,Cut out size 92x92, Aux Supply : 230V AC & 12V DCAccessoriesTNT Switch, Contacts: 02 NO & 2NCLocal Remote Switch, Contacts: 02 NO & 2NCSpace heater 100WThermostat Temperature Range: 30-90, 15A 3 Pin socket for 230 V AC Supply Current 1-A Toggle switch, Push button for Trip circuit Supervision check, Contacts:02 NOTB for CT & PT circuit, Disconnecting typeType KUTSD6 |
| 13 | Item No 7 Contd/...TB for control circuit, Non-Disconnecting typeFuse control circuit, 8 window AnnuniciatorAux Voltage :230V ACHooter, Aux Voltage :230V ACBattery Charger 5A230V AC I/P & 24 V DC O/PBattery 12 V DC, 7AHIndication LampRed colour lamp, 24 V DC : For Breaker ONGreen colour lamp, 24V DC : For Breaker Off Blue colour lamp, 24 V DC : For Breaker Spring ChargeAmber colour lamp, 24 V DC : For Auto TripWhite colour lamp, 24 V DC : For Trip Circiut SupervisionRed colour lamp, 63.5 V AC : For R Phase HealthyYellow colour lamp, 63.5 V AC : For Y Phase HealthyBlue colour lamp, 63.5 V AC : For B Phase HealthyBreaker Rack in and out handleTestingFactory Tests shall be carried out in presence of Rep of Accepting Officer as per IEC standard-62271-100 |
| 14 | Item No 7 Contd/...Following test reports for 01 Nos SF6 breaker shall be submitted before applying payments:-(i) Insulation resistance test(ii) Operation time test(iii) Contact resistance test(iv) Pre-insertion resistance (PIR) test (If applicable)(v) SF6 gas leak test(vi) High Voltage withstand test(vii) Secondary test to ensure the proper functioning of the live line indicators, fault passage indicators and relay(vii) Mechanical Operation Test |
| 15 | M & L for Earthing complete with galvanized steel earth plate electrode 60 cm X 60 cm X 6 mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below normal ground level) with top edge of plate not less than 1.5 mtr below ground level connecting to the GI strip 32 x 6mm, by means nut bolt, nuts, check nuts and washer of the GI Earth wire protected by provision of GI light grade pipe 40 mm incl provision of concrete pit in PCC (1:2:4) type B-1 using 20 mm graded stone aggregated with 40 mm thick cover with RCC (1:2:4) reinforced with XPM (weight not less than 4 Kg / Sqm) and frame with lugs 2 Nos and with 6 mm dia MS bar handle made to shape, GI light grade 20 mm bore pipe for watering perforated at bottom 1.75 mtr long placed on top edge of earth plate, common salt and charcoal filling, taste point made out of phosphorus bronze with fixing arrangement, funnel, wire mesh and earth work in hard/dense soil, returning filling in and removal of surplus soil to a distance not exceeding than 50 mtr, all as per electric plate No 3 of SSR Part I 2009 and connection to earth test point all as specified incl testing on completion”. Please Enable Macros to View BoQ information |
