Replacement of Solar Inverter of ITEC Bldg, Sonipat Campus

Providing, installation, testing and commissioning of 50 kW capacity On Grid power conditioning unit (PCU)/Inverter of 350 - 800 V dc input voltage range and 415 V ac, three phase, 4 wire, 50 Hz ± 2.5 Hz output voltage suitable to generate ac with a variation of 10% at nominal voltage. Power with efficiency not less than 97%, total harmonic distortion less than 3% and suitable for ambient temperature from 0 to 50 degC, minimum IP-65, built-in meter and data logger, MPPT, switching devices IGBT/MOSFETs and controller Microprocessor / DSP. PCU / inverter shall be capable of complete automatic operation including wake-up, synchronisation & shutdown. The PCU shall be able to withstand unbalanced load conforming to IEC standard with shutdown/standby mode. it must be provided with grid islanding along with manual disconnect pole isolation switch besides automatic disconnection. Minimum protections: Mains under / over voltage, over current, over/under grid frequency, over temperature, surge voltage induced at output due to external source, short circuit, lightning, anti-islanding (for grid sync mode) and other protections as per applicable standards. LCD/LED display of minimum parameters: dc input voltage, dc current, ac voltage and current (all 3 phases), instantaneous and cumulative ac output power, daily dc energy produced and other parameters as per applicable standard. Communication interface compatibility shall be RS 485 / RS 232. Including disconnecting and removing the faulty inverter in place and reconnecting with new inverter/PCU unit etc. complete as required. (Acceptable make: SMA / KACO / Refusol / Delta /Thea / Danfoss/ Luminous/ Exide/ Havells/ Solis/ SUNGROW / Solar)

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