PROVN OF ROOF TOP SOLAR PROJECT AT GUWAHATI UNDER GE GUWAHATI

Design, Supply, Installation, Testing & Commissioning of solar panel suitable for 50 KW (Solar panel of 550W x 91). The Solar panel should have the following specifications :-

The PV modules and Solar Cell used should be made in India.

The PV modules used must qualify to the latest edition of IEC standards or equivalent BIS standards, i.e. IEC

The panels shold comply with IS 61215/IS14286, IEC 61853-Part I/IS 16170-Part I, IEC 61730 Part-1 & Part 2 and IEC 62804 (PID). For the PV modules to be used in a highly corrosive atmosphere throughout their lifetime, they must qualify to IEC 61701/IS 61701. 1.3. The rated power of solar PV module shall have maximum tolerance up to +3%.

The peak-power point current of any supplied module string (series connected modules) shall not vary by +1% from the respective arithmetic means for all modules and/or for all module strings (connected to the same MPPT), as the case may be.

The peak-power point voltage of any supplied module string (series connected modules) shall not vary by + 2% from the respective arithmetic means for all modules and/or for all module strings (connected to the same MPPT), as the case may be.

The temperature co-efficient power of the PV module shall be equal to or better than -0.45%/°C with minimum capacity 250Wp and effeciency should be minimum 16%. Solar PV modules of minimum fill factor 75%, to be used.

The PV modules shall be equipped with IP 65 or better protection level junction box with required numbers of bypass diodes of appropriate rating and appropriately sized output power cable of symmetric length with MC4 or equivalent solar connectors. The IP level for protection may be chosen based on following conditions: i. An IP 65 rated enclosure is suitable for most outdoor enclosures that won’t encounter extreme weather such as flooding. ii. An IP 67 rated enclosure is suitable at locations which may encounter temporary submersion at depths of up to one meter. iii. An IP 68 enclosures is recommended if there may exist situations of submergence for extended periods of time and at substantial depths.

The contractor should submit detailed drawings of the complete roof top solar plant & solar PV module array in accordance with terms & conditions of CA duly specifying all the equipments & accessories including protection devices, modules, invertor, connections. The same shall be approved by GE prior to commencement.

All PV modules should carry a performance warranty of >90% during the first 10 years, and >80% during the next 15 years. Further, module shall have performance warranty of >97% during the first year of installation—degradation of the module below 1% per annum.

The manufacturer should warrant the Solar Module(s) to be free from the defects and/or failures specified below for a period of twenty five (25) years from the date of commissioning: Defects and/or failures due to manufacturing or failures due to quality of materials

Design, Supply, Installation, Testing & Commissioning of Inverter/PCU suitable for 50 Kw with the following specifications :-

Inverters/PCU should comply with applicable IEC/equivalent BIS standard for efficiency measurements and environmental tests as per standard codes IEC 61683/IS 61683, IS 16221 (Part 2), IS 16169 and IEC 60068-2 (1,2,14,30) /Equivalent BIS Std.

Maximum Power Point Tracker (MPPT) shall be integrated in the inverter/PCU to maximize energy drawn from the array. Charge controller (if any) / MPPT units environmental testing should qualify IEC 60068-2 (1, 2, 14, 30)/Equivalent BIS standard. The junction boxes/enclosures should be IP 65 or better (for outdoor)/ IP 54 or better (indoor) and as per IEC 529 Specifications.

All inverters/PCUs shall be IEC 61000 compliant for electromagnetic compatibility, harmonics, Surge, etc.

The PCU/ inverter shall have overloading capacity of minimum 10%.

Typical technical features of the inverter shall be as follows. (i) Switching devices: IGBT/MOSFET (ii) Control: Microprocessor/DSP (iii) Nominal AC output voltage and frequency: as per CEA/State regulations (iv) Output frequency: 50 Hz (v) Grid Frequency Synchronization range: as per CEA/State Regulations (vi) Ambient temperature considered: -20°C to 60°C. (vii) Humidity: 95 % Non-condensing. (viii) Protection of Enclosure: IP-54 (Minimum) for indoor and IP-65(Minimum) for outdoor. (ix) Grid Frequency Tolerance range: as per CEA/State regulations. (x) Grid Voltage tolerance: as per CEA/State Regulations. (xi) No-load losses: Less than 1% of rated power. (xii) Inverter efficiency (Min.): >93% (In case of 10 kW or above with in-built galvanic isolation) >97% (In case of 10 kW or above without inbuilt galvanic isolation). (xiii) Inverter efficiency (minimum): > 90% (In case of less than 10 kW). (xiv) THD: < 3%. (xv) PF: > 0.9 (lag or lead). (xvi) Should not inject DC power more than 0.5% of full rated output at the interconnection point and comply to IEEE 519.

The output power factor of inverter should be suitable for all voltage ranges or sink of reactive power, inverter should have internal protection arrangement against any sustain fault in feeder line and against the lightning on feeder.

All the Inverters should contain the following clear and indelible Marking Label & Warning Label as per IS16221 Part II, clause 5. The equipment shall, as a minimum, be permanently marked with: i. the name or trademark of the manufacturer or supplier; ii. A model number, name or other means to identify the equipment, iii. A serial number, code or other marking allowing identification of manufacturing location and the manufacturing batch or date within a twelvemonth time period. iv. Input voltage, type of voltage (a.c. or d.c.), frequency and maximum continuous current for each input. v. Output voltage, type of voltage (a.c. or d.c.), frequency, maximum continuous current and for a.c. outputs, either the power or power factor for each output. vi. The Ingress Protection (IP) rating

Note for Sl No 01 & 02 :- Cost for all Material including GST for all items such as - DC Cable 20mm + 4mm, T5 Connector, MC4 Connector, DCDB/ACDB, Earthing Light arrester, GI mounting Structure, GI Clamp, GI nut bolt, Power Generation Meter, Power Meter, Input Amp Meter, Output Amp Meter, Output volt meter, Solar Panel Cleaning System, Sprinkler System , PVC Fitting Timer, 1HP Moter for Water supply and RCC Civil Work etc are inclusive of this rate.

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