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| 1 | Dismantling of existing HT Gear in the exisisting Compact 1600 KVA Sub Station and all type of cable connection (incl. dismantling of glanding) maintaining normalcy as far as possible and keep it in a safe position as per direction of EIC (within the compound of R G Kar MC&H ) all complete. (Work should be completed within stipulated period of time as per availability period of Shut Down from Hospital Authority & direction of EIC) |
| 2 | SITC of 2 Way (1 LBS + 1 VCB) + Metering Non-extensible (Indoor type) new Motorised 11 kV 2way Ring Main units with Metering.RMU shall include its own power supply, including battery and battery charger. Materials promoting the growth of fungus or susceptibility to corrosion and heat degradation shall not be used, and steps shall be taken to provide rodent proofness, hence the enclosure shall be made of Galvanize sheet of 2.0 mm thickness, CRCA enclosures are not acceptable.RMU should have a bus connected PT panel (air insulated), which shall serve as the power supply of 230 V AC input.The degree of protection shall be not less than IP 41.The Stainless Steel tank fpr SF6 gas should be completely welded so as to ensure IP 67 degree of protection and shall be internal arc tested.The complete RMU shall be tested in an accredited INDIAN or FOREIGN laboratory and designed for an Internal Arc for IAC-AFLR in accordance with IS 9920., IS 9921,IEC 62271-100.,IEC 62271-102 and 103,IEC 62271-200,,IS 10601.Make: Lucy Electric/Schneider/Siemens |
| 3 | Nominal system voltage: : 11 kVHighest system voltage: : 12 kVRated normal continuous current: 630 ANumber of phases: : 3Frequency: : 50HzVariation in frequency: : 50 ±3% HzType of earthing: : Solidly EarthRated short time withstand current for 3s : 21kAInternal Arc Classification: IAC A FLR: 21 KA/3 secRated Peak withstand current: 52.5 KADuration of Short Circuit : 3 SecPower Frequency Withstand Voltage to Earth,Between Poles, & Across Opening Span: : 38 kV rmsLightning Impulse Withstand Voltage Phase-to-Phase & Phase-to- Earth:: : 95 kV peakInsulation Medium:SF6Mechanical Endurance Class for specifiedoperating sequence: M1Electrical endurance class for specified operatingsequence: E3 |
| 4 | 3 Nos. ring type, single core CTs in VCB for metering purposes. A similar arrangement shall be provided in each circuit breaker cable compartment to mount a 3 Nos. single-core, ring type CT for protection purposes.The CTs shall conform to IEC: 61869.CTs for Metering: Material : Epoxy resin cast/ Tape wound Burden : 2.5VA,Ratio : 100-50 /1 A,Accuracy Class : 0.5 CTs for Protection Material : Epoxy resin cast/ Tape wound,Burden : 2.5VA,Ratio : 100-50/1 A,Accuracy Class : 5P10 |
| 5 | A 3 phase single or 3 nos. single phase potential transformers shall be provided. These may be housed in a separate air insulated PT Panel, directly connected to the RMU through main bus. The burden per transformer shall not be more than 50 VA and the voltage ratio shall be 11000/110 V .The accuracy class shall be 0.5.,HRC fuses shall be provided on the HV side.• Interconnection with bus PT shall be through bolted arrangement.• The PTs shall be of cast epoxy-resin construction, and they shall conform to IEC 60044-1. |
| 6 | The RMU shall be equipped with self-powered numerical relays(Communicable relays shall be with auxiliary power which shall be given from battery but the tripping shall be self-powered philosophy) communicable to trip the RMU circuit breakers.The protection relay’s auxiliary contacts shall be provided for hardwiring to the FRTU. The relay shall also interface with the FRTU via an RS 232/485 port in order to send, as a minimum, real-time readings using the MODBUS protocol.The numerical relay shall be self-powered and should provide Inverse Definite Minimum Time (IDMT) and Instantaneous protection characteristics. On this basis, the relay as a minimum shall provide:Phase Overcurrent Protection (50/51)Earth Fault Protection (50N/51N)The relay shall be provided with an input for remote tripping, which shall be realized via an electric output pulse even without presence of phase current. A flag indicator shall be installed for signaling the occurrence of trip conditions.It shall have three phase overcurrent elements and one earth fault element.IDMT trip current settings shall be 20-200% in steps of 1% for phase overcurrent and 20-80% in steps of 1% for earth fault. |
| 7 | Each RMU shall be fitted with a power supply, including batteries and battery charger, suitable for operating the motors of the On-load Isolators and Circuit Breakers. On this basis, the following operational specifications shall apply: The power supply unit shall conform to the following requirements:- Input: 230 V AC nominal from the RMU’s auxiliary power transformer allowing for possiblevariations from 190 to 300 V AC- Output: Stable 24 V DC.- Batteries: 24 V DC (2 Nos of 12 V DC each)The auxiliary power transformer shall be of suitable rating as per the load calculation and the Auxiliary power transformer inputs shall be equipped with surge protection devices in accordance with IEC 62305. |
| 8 | Instantaneous trip current settings shall be 100-3000% in steps of 100% for phase overcurrent and 100-1200% in steps of 100% for earth fault.Selectable IDMT curves shall be provided to include, for example, Normal Inverse, Very Inverse,Extreme Inverse, Long Time Inverse, and Definite Time. Separate curve settings for phase overcurrent and earth fault shall be supported.For IDMT delay multiplication, the Time Multiplier Setting (TMS) shall be adjustable from 0.01 to 0.1 in 0.01 steps. The relay shall also be provided with: Alphanumeric Liquid Crystal Display (LCD) for relay setting. Communications via a MODBUS RS232/RS485 port to provide the FRTU (and hence the DMS) with phase current measurements. It is also desirable that this same means of communication can be used by the FRTU to send setting and control commands to the relay.Parameter change capability i.e. password protected. |
| 9 | Supplying & laying of 6.6 KV (UE) Grade XLPE Aluminium conductor, PVC sheathed, armoured cable conforming to IS 7098, of earthed system of following size in existing masonary trench from CESC Gear to Consumer end Gear & Consumer end Gear to Transformer HT side [as per GS.] (Make:Polycab / RR /KEI/ Havells/ Gloster)3 Core x 300 Sq.mm |
| 10 | Making heatshrinkable joints indoor type to the ends of the following XLPE HT cable at the transformer end as well as at the VCB ends supplying with necy. jointing kits (Raycham), sockets, sleeves, anti-corrossive paste, wires, solders, jointing compounds, rubber sheets etc. incl. supplying of necy. tools & tackeles for crimping the end sockets, soldering irons & making of glands at the both end of the cable as per directions of EIC3 Core x 300 Sq.mm |
| 11 | Charges for hiring & running of 750 KVA Silent Movable Green DG set with suitable size Cu cable (100 Mtr. Long) incl connection at required point & with operator / guard for 24 hrs. (DG Set will be tested ON LOAD at least 80% of capacity before installation) (Oil consumption rate 150 Ltrs./Hr.) |
| 12 | (Rate should be quotated including all taxes and duties, GST .) Please Enable Macros to View BoQ information |
