Zilla Parishad Tender

Supply of PV Array Junction Box (AJB): a) The junction boxes are to be provided in the PV array for termination of connecting cables. The Boxes (JBs) shall be made of GRP/FRP/Powder Coated Aluminium /cast aluminium/M.S alloy with full dust, water & vermin proof arrangement. All wires/cables must be terminated through cable lugs. The JBs shall be such that input & output termination can be made through suitable cable glands.b) Each Junction Box shall have High quality Suitable capacity Metal Oxide Varistors (MOVs) / SPDs, suitable Reverse Blocking Diodes. The Junction Boxes shall have suitable arrangement monitoring and disconnection for each of the groups. Voltage: Max. 1000V DC Make: Power One

Supply of ACDB & DCDB : Designed for 5 kWp Hybrid solar power plant with all protections as per MNRE guidelines.DC DPBs shall have sheet from enclosure of dust & vermin proof conform to IP 65 protection. The bus bars are made of copper of desired size. Suitable capacity fuse & MCBs/MCCB shall be provided for controlling the DC power output to the PCU along with necessary surge arrestors and suitable battery MCB's are used between Battery and solar PCU in DCDB . AC Distribution Panel Board (DPB) shall control the AC power from PCU/ inverter, and should have necessary surge arrestors. Interconnection from ACDB to mains at LT Bus bar while in grid tied mode.All switches and the circuit breakers, connectors should conform to IEC 60947, part I, II and III/ IS60947 part I, II and III. All the Panel’s shall be metal clad, totally enclosed, rigid, floor mounted, air - insulated, cubical type suitable for operation on three phase / single phase, 415 or 230 volts, 50 Hz.All indoor panels will have protection of IP54 or better. All outdoor panels will have protection of IP65 or better.

Supply of Grid tie solar PCU Rating : 4KW, 1Ph Inverter – 1 Nos with nominal DC voltage 48 V DC., Make: Siemens /SMA Germany / Power One. Control : Microprocessor /DSP. Hybrid Inverter .Nominal AC output voltage : 230V, 1 Phase, . Output frequency : 50 Hz . Max. DC input Power 6kW. MPPT Voltage Range 60 - 115 VDC. . Output Voltage Range - 180V - 260V AC. Grid Frequency Synchronization range : +/- 5 %. Ambient temperature considered : -10o C to 55 ℃. Humidity : 90 % Non-condensing. Protection of Enclosure :: IP-21(Minimum) for Indoor. Grid Frequency Tolerance range : +/- 5 %. Grid Voltage tole rance : 180 V to 260 V. No-load losses : Less than 1% of rated power. Inverter efficiency 92%. THD : 3%. Efficiency Measurement IEC 61683/ Equivalent BIS Std.Environmental testing IEC 60068-2 (1,2,14,30) / Equivalent BIS Std.Interfacing with utility grid IEC 61727. Islanding Prevention Measurement IEC 62116. EMI/EMC : IEC 61000-6-316 Amps IEC 61000-6-416 Amps. Safety: IEC - 62109-1 (2010/4) C - 62109-2 (2011/6). All above IEC’s should be from NABL/ IEC Accredited Testing Laboratories or MNRE Approved Test Centers/ International laboratories

Battery Bank Capacity should be 12 V , 150 Ah. b. VRLA tubular GEL type batteries conforming to IEC-61427 & IS-1651 /IS 13369 Standards, low maintenance, stationery at C/10 rate). It will be staged in racks duly painted with acid resistant paint to cover less space.

Supply of System Earthings : Each array structure of the PV yard should be grounded/ earthed properly as per IS:3043-1987. In addition the lighting arrester/masts should also be earthed inside the array field, PCU, ACDB and DCDB should also be earthed properly. Earth resistance shall not be more than 5 ohms. It shall be ensured that all the earthing points are bonded together to make them at the same potential.

Lightning Protection: The SPV power plants shall be provided with lightning &overvoltage protection. The main aim in this protection shall be to reduce the over voltage to a tolerable value before it reaches the PV or other sub system components. The source of over voltage can be lightning, atmosphere disturbances etc. The entire space occupying the SPV array shall be suitably protected against Lightning by deploying required number of Lightning Arrestors. Lightning protection should be provided as per IEC standard. The protection against induced high-voltages shall be provided by the use of metal oxide varistors (MOVs) and suitable earthing such that induced transients find an alternate route to earth

Supply of Cables DC & AC: Sizes of cables between array interconnections, array to junction boxes, junction boxes to Inverter, Battery to Inverter etc. shall be so selected to keep the voltage drop of the entire solar system to the minimum. The cables (as per IS) should be insulated with a special grade PVC compound formulated for outdoor use. The size of each type of DC cable selected shall be based on minimum voltage drop however; the maximum drop shall be limited to 1%. The size of each type of AC cable selected shall be based on minimum voltage drop however; the maximum drop shall be limited to 2 %. i. Shall meet IEC 60227/IS 694, IEC 60502/IS1554 standards.

Installation, Testing & Commissioning