Substation & Switchyard Works Tender Results

Supply, installation, testing and commissioning of distribution network, 11 KV outdoor compact Sub Station totally factory assembled (non walk in type) consisting of 3 way RMU type, 1 No. 11KV/433V, 500 KVA Oil type transformer, 1 set of LT device as under. Make: Schneider, SIEMENS/ Voltamp/ Crompton (OEM Manufactured Only) `MV COMPARTMENT 11KV, 630A, 21KA/1Sec indoor type non-extensible, SF6 gas insulated Ring Main unit with sealed pressure system criterion in accordance with the IEC: 60298, 62271 - 202 manufactured by ABB, Schneider Electric and Siemens. RMU with Protection degree IP 54. IAC of 20 kA for 1 sec for tank and cable box category IAC-AFL . The Switchgear includes the following HV cubicles =1No.` `SF6 insulated switchgear (2 Isolator plus 1 Vacuum Circuit Breaker with metering): Qty-1 - SF6 insulated 400A/630A,21kA/1 s, Vacuum Circuit Breaker. The VCB should be able to clear at least 20 Nos Dead short circuit faults. - Integral earthing switch with making switch. - Emergency Trip Push Button - SF6 Gas pressure indicator. - 230V AC Shunt Trip coil for external trip signal. - Live cable indicating LEDs energized thru capacitive voltage dividers. - Cable box suitable for termination of 1no. 3CX300sq.mm. PILC/XLPE cable.` `Right angle terminal protects/boots. - Padlocking facility. - Microprocessor based IDMT relay for overcurrent, short circuit and earth fault protection RMU metering compartment shall be provided with potential transformer rated for 11v3/110v3, 50 VA for metering purpose having class 0.5 accuracy RMU shall be provided with metering and protection CTs rated for 50 / 1 plus 1amps, class - 0.5 accuracy, 2.5 VA burden for circuit breaker 1 No. Trafo card` Transformer Oil Type Three phase, Ester Oil type transformer. Make : Crompton/ Schneider / Voltamp / Siemens i) efficiency level 2 Standard: IS : 2026, IS 1180 part 1 ii) Indoor Installation, iii) Vector group : Dyn11 iv) Rating : 500 KVA v) Cooling System: ON, v) Winding: Copper, vi) Magnetic Core: Prime grade of M4 or better vii) High voltage : 11KV - 50 Z, viii) Low voltage: 415V-50HZ ix) System highest voltage : 12kV at the HV side x). xi) Insulation Level `H.V. Power Frequency (KV rms): 28 kV - H.V. Impulse withstand voltage (KV peak): 75 kVp. The Losses of Transformer should be as per IS 1180 part 1 norms. Transformers shall be designed for 110% continuous over fluxing withstand capability Tapping: as per IS 1180 part 1 Temperature : - Ambient temperature: as per 40 Degree C. - Winding temperature rise: 45 Degree C. Accessories: - OTI and WTI, Pressure relief valve (without auxiliary contacts),Skids, Earthing terminal, Lifting lugs, Rating plate, Dehydrating breather, Jacking Lugs (Transformers weighing above 3000 Kg),vent with diaphragm =1No.` `LV COMPARTMENT The LV compartment with Degree of protection-IP54 designed for a 50 degree C ambient temperature. The panel is modular, dead front, freestanding, floor mounted and comprises the following equipment: INCOMER. • 433 V air insulated Aluminium busbar having capacity 800A, 50Hz,50KA withstand fault level capacity, MFM - EM6400NG/ 7KT0310 in incomer • 1No. 4 pole, 800A, 50KA manually electrical operated type ACB with inbuilt microprocessor based trip system Overload, SC, Inst. and E/F, U/V protection with current metering display with Thermal memory. Suitability for isolation as per IEC 60947-2.ACB should have LCD display. Tripping time (30 sec. Fault differentiation on release of ACB respective LED glows, indicating the type of fault. Aux contact - 4 NO plus 4 NC. release. Icu=Ics=Icw = 50 kA (1 sec) .(Masterpact NW) - Schneider ,(3WJ)-Siemens , ( U-power MTX 3.5 EC) - LandT) ` OUTGOING: All the the MCCB should be Thermal Magnetic based , Variable Overload protection setting type with Icu = 100% Ics as per IEC 60947-2, suitable for isolation with class 2 front face MCCB 4 Pole, 630A , 50 kA =1Nos. (APFC) MCCB 4 Pole, 250A , 35kA =5Nos. (Metering panel) MCCB 4 Pole, 100A , 35kA =4No. (Metering panel) Outdoor Enclosure :- The enclosure shall be made of 2.0 mm thickness Galvanized Sheet Steel tropicalised to meet Indian weather conditions including all the partition sheets and doors. The base of the enclosure shall be of 4.0 mm thickness Hot Dip Galvanized Sheet Steel to ensure rigidity for easy transport and installation. The entire Package Substation shall be Factory Assemble and Factory Fitted. The enclosure shall have IP54 degree of protection for HT and LT switchgear compartment IP 23 degree of protection for Transformer compartment. The Enclosure to be tested for Internal Arc fault test to the tune of at least 20 KA for 1 second adhering to as per latest IEC 62271-202.The temperature rise test on enclosure for K10class.The enclosure exterior shall be powder courted. Each compartment will be provided with door and pad locking arrangement. The compartment illumination lamp with door operated switch shall be provided for MV and LV compartment. (Rates are of GST excluded)

Earth Mat Laying of earth mat in the switchyard by laying of M.S. Round of 32 mm dia in 500 mm deep trenches with M.S. Round 32mm dia,3Mtr. Long earth electrodes as per drawing. The work includes welding of the M.S. Round, connecting all steel structures in the switchyard with the earth mat by means of G.I. strips of size 50x6mm as per item below.