COMPREHENSIVE MAINTENANCE OF SOLAR POWER PLANT 800KW AT OTA AND 600KW AT MH UNDER GE STM

M&L for comprehensive servicing,inspection,testing,troubleshooting,cleaning,preventive maintenance,calibration and commissioning support for Grid-Connected Solar Photovoltaic Power Plant of 800KW capacity shall comprise of the following complete all as specified as per Manufacturer's recommendation and as and directed by Engineer-in-Charge at site . A.Plant Description:- Location - OFFICERS TRAINING ACADEMY 800kw (OTA 800KW) Latitude - 13.006929, Longitude - 80.189420 DC Capacity - 800 KWp, AC Capacity - 800 KW Operational Acceptance - Yes Connectivity voltage - 11 KV Main Grid - 11 KV, Solar connected with 11 KV at main s/s OTA

B. Major Equipment Details:- i) Module - Delta 50kw (Make - Delta) ii) Data logger - 01 No iii) WMS - (a) Pyranometer - 01 No (b) Ultrasonic Anemometer - 01 No (c) Module temperature sensor & Ambient temperature sensor - 01 No iv) Lightning protection system with 8.5 meter GI mast - 01 No v) Lt panel 900 A and 800A - 02 Nos vi) 11KV VCB, 630 Amp Indoor type - 01 No vii)Combact sub station Transformer 1000KVA copper wound step up11 KV - 01 No , ACB-1600Amps, MCCB -800Amps vii) LT Panel board 16-Nos with I/C MCCB 100 amp - Nos, ix) UPS 1 KVA 1- phase with battery bank - 01 No x) ABT Meter / Electric Trivector meter 0.2 class 30/5 CT Ratio - 01 No The AMC services shall be provided strictly through the OEM. Spare exclusions: Above contract is excluding following spares: a) Consumable spares b) Ageing spares, wound components c)The contract with OEM for this item should have validity of 1 calendar year.

M&L for comprehensive servicing,inspection,testing,troubleshooting,cleaning,preventive maintenance,calibration and commissioning support forGrid-Connected Solar Photovoltaic Power Plant of capacity 600KW capacity shall comprise of the following complete all as specified as per Manufacturer's recommendation and as and directed by Engineer-in-Charge at site . A. Plant Description:- Location - MIlitary Hospital Chennai 600kw (MH 600KW) Latitude - 13.020856, Longitude - 80.197209 DC Capacity - 600KWp , AC cap - 600 KW Operational Acceptance - Yes Connectivity voltage - 11 KV Main Grid - 11 KV, solar connected with 11 KV at main s/s OTA

B.Major Equipment Details:- i) Module - Delta 50kw (Make - Delta ) ii) Data logger - 01 No iii) WMS -(a) Pyranometer - 01 No (b) Ultrasonic Anemometer - 01 No (c) Module temperature sensor & Ambient temperature sensor - 01 No iv) Lightning protection system with 8.5 meter GI mast - 01 No v) Lt Panel 900 A and 800A - 02 Nos vi) 11KV VCB, 630 Amp Indoor type-01 No, (Make -Schneider) vii) Transformer 750 KVA copper wound step up11 KV - 01 No vii) LT Panel board 16-Nos with I/C MCCB 100 amp - Nos, ix) UPS 1 KVA 1- phase with battery bank - 01 No x) ABT Meter / Electric Trivector meter 0.2 class 30/5 CT Ratio - 01 No The AMC services shall be provided strictly through the OEM. Spare exclusions: Above contract is excluding following spares: a) Consumable spares b) Ageing spares, wound components c) The contract with OEM for this item should have validity of 1 Calendar year.

(j). All breakdowns affecting generation shall be attended on priority and rectified within the stipulated time to avoid generation loss. (k) Mandatory spare parts required for uninterrupted operation of the Solar Power Plant shall be kept readily available at site at all times during AMC period. (l) The Contractor shall maintain the earthing resistance value within permissible limits. In case the earthing value exceeds specified limits, necessary recharging/replacement/new earthing shall be carried out by the Contractor at no extra cost. (m). The Contractor shall strictly comply with all applicable safety standards, IE Rules, IS Codes, statutory requirements, and departmental safety procedures during execution of maintenance works. (n) Any defective equipment/components affecting performance and efficiency of the Solar Power Plant shall be repaired/replaced by the Contractor without any additional financial implication to the Department. (o). The Contractor shall carry out routine, preventive, breakdown and predictive maintenance of the complete Solar Power Plant system during the AMC period. (p). Continuous monitoring of plant performance, generation data, inverter status and system health shall be carried out by the Contractor. (q) The Contractor shall conduct necessary inspections/testing such as thermal imaging, IV curve testing, insulation testing and performance analysis whenever required for identification of abnormalities and corrective actions. (r). The Contractor shall maintain proper records of preventive maintenance, breakdown maintenance, inspections, testing and generation data, and submit the same to the Engineer-in-Charge on regular basis.

(s). All required T&P, testing instruments, safety equipment and consumables necessary for operation and maintenance of the plant shall be arranged by the Contractor. (t). Monthly inventory and spare consumption reports shall be submitted to the Department. (u). Joint meter readings, outage records and maintenance registers shall be maintained properly throughout the AMC period. (v). The Contractor shall maintain proper housekeeping and cleanliness in and around the Solar Power Plant area. (w). The Contractor shall prepare and submit Annual Preventive Maintenance Schedule for approval of the Engineer-in-Charge. (x). Proper coordination with Department representatives shall be maintained for smooth operation and maintenance activities. (y). Cybersecurity monitoring and data communication systems associated with the Solar Power Plant shall be maintained in healthy operating condition. (z). Renewable Energy generation records, reporting and documentation shall be maintained as required. Preventive Maintenance Inspection & Checking Schedule: Daily Checking: (aa). Monitoring of daily power generation, inverter performance and system availability. (ab). Checking of inverter alarms, faults, trips and abnormal indications. (ac). Recording of daily generation, downtime and meter readings in logbook. (ad). Visual inspection of control panels, inverter rooms and equipment for abnormal noise, overheating or smell.

Monthly Checking: (ae). Visual inspection of PV modules for cracks, damages, discoloration and hotspots. (af). Inspection and tightening of module interconnections, DC/AC terminations and cable joints. (ag). Inspection of Junction Boxes, Combiner Boxes and Distribution Boards. (ah). Inspection of cable trenches, conduits and cable insulation for damages and rodent attacks. (ak). Checking and cleaning of inverter filters, ventilation systems and panel enclosures. (al). Inspection of module mounting structures, nut bolts, fasteners and clamps for looseness/corrosion. (am). Checking of earthing system, earthing strips and measurement of earthing resistance values. (an). Inspection of surge protection devices, breakers, relays, fuses and isolators. (ao). Thermographic inspection of electrical connections and terminations. (ap). Inspection of MC4 connectors, string cables and inverter terminations. (aq). Checking functionality of protection systems including automatic disconnection during grid failure. (ar). Cleaning and maintenance of drainage paths around structures and equipment foundations.

Quarterly Checking (as). Inspection of structural rigidity, alignment and condition of module mounting structures. (at). Detailed inspection of lightning protection system and associated earthing arrangements. (au). Verification of inverter operational parameters and performance trend analysis. (av). Inspection and calibration check of protection relays and associated control systems. (aw). Review of preventive maintenance records and system performance data. Half Yearly Checking (ax). Comprehensive retightening of major electrical terminations and busbar connections. (ay). Preventive maintenance and servicing of inverter cooling and ventilation systems. (az). Inspection and testing of safety devices and protection systems. Annual Checking (ba). Complete preventive overhaul and servicing of Solar Power Plant equipment. (bb). Comprehensive testing and calibration of protection systems, meters and monitoring devices. (bc). Detailed performance assessment of the Solar Power Plant to verify contractual performance parameters. (bd). Inspection of complete structural system for corrosion, deterioration and foundation condition. (be). Preparation and submission of Annual Maintenance and Performance Report to the Department.

M&L for annual maintenace of online system integrating it with the plant for on-grid data monitoring and collection, suitable for a 3-phase, 415V, 50Hz system, with Online operation including one year internet recharge as required complete all as specified as per Manufacturer's recommendation and as and directed by Engineer-in-Charge at site . The system integrated with following parts A) 4G + ethernet based Plug and Play - RTU with antenna, data logger to connect inverters, sensors and MFMs (B)Line SPD Citel make (optional but recommended) (C) RS485 Communication SPD citel make (optional but recommended) (D) IP 67 enclosure box with SMPS power supply (E) Access to Web portal-server charges for 1 year Data frequency – 10 minutes Key Components • Interactive Dashboard • Single Line Diagram • PR analysis • Solar radiation & weather data • Graphs and Reports • Superuser Dashboard for Centralized monitoring • Mobile app Note : The cost of spares /replacement as required for smooth functioning of the existing sytem serviceable shall be provided by the contractor and quoted rate shall be inclusive for the same and no extra cost shall be allowed.

S&F in repair Inverter 50KW, IGBT S26 29 With Busbar strip Make-Delta, complete all as specified and directed .