The object of the contract is the supply, transport, handling, assembling, connection, configuration, commissioning, commissioning and integration of a system of 4 electric storage batteries compatible with the existing Huawei SUN2000 -100KTL M2 inverters, together with all the interventions to the electrical, civil, earthing, monitoring, protection and fitting installations necessary for the integrated operation with the existing photovoltaic system, as well as obtaining the approval from the distribution operator DEER SA.The main purpose of the purchase is to increase the degree of local use of the electricity produced by the existing photovoltaic system, by storing the energy produced during surplus periods and using it to supply the building's consumers during periods when the consumption exceeds the instantaneous production. • optimisation of self-consumption of electricity; • increasing the energy efficiency of the building; • reducing the energy absorbed from the public grid; • controlled integration of the existing photovoltaic system with a battery system; • monitoring energy flows; • increasing the safety and predictability of the operation of the electrical installation; • ensuring modern energy infrastructure that is efficient and compatible with current energy transition requirements. The detailed description of the subject-matter of the contract shall be provided, not limited to: 1. Drawing up technical execution documentation for the storage system, their technical regulation for the compliant operation, obtaining the approval of the specialist designer of the initial electrical installations; 2. Obtaining the updated ATR and approving the technical documentation at the distribution operator DEER SA; 3. Supply and assembly of 4 storage batteries compatible with Huawei SUN2000 -100KTL M2 inverters; 4. Transport, handling, crane, positioning and fixing equipment; 5. Modification of existing TDG-RN 0.4 kV; 6. Mounting in TDG-RN of a connection switch to the 0.4 kV TDC-ESS switchboard; 7. Mounting electronic protection of current, voltage and frequency; 8. Adaptation and completion of 0.4 kV bar system; 9. Column output 0.4 kV between existing TDG-RN and 0.4 kV TDC-ESS; 10. Supply and assembly of 0.4 kV TDC-ESS; 11. 11. Equipping TDC-ESS with general switch provided with all the protections required by the regulations and legislation in force and 4 connection switches of the storage units; 12. Supply and installation of 0.4 kV column cables between TDC-ESS and ESS1, ESS2, ESS3, ESS4 battery packs. N2XH cables will be used according to the sections resulting from the technical documentation drawn up by the contractor, but with the obligation to comply with the characteristics imposed by the regulations in force for cables located in public buildings; 13. Supply and installation of gutters, protective tubes, terminal slippers, sockets, flanges, clamps and accessories; 14. Realization of earth outlet with R < 4 ohms and connection of equipment to it; 15. Providing and mounting Smart Meter that allows the correlated operation of the storage system with the renewable electricity production system; 16. Supply and installation of Power Sensor or Smart Meter related current reducers; 17. Integration with the existing photovoltaic system; 18. Configuration of monitoring, communication and control system; 19. Integration of the storage system into the energy consumption monitoring system implemented in the administrative building; 20. Samples, checks, adjustments, commissioning and BIPs; 21. Training of the beneficiary's staff; 22. Handing over the final technical documentation and the quality file Operation Manual; 23. Obtaining the updated connection certificate from the distribution system operator DEER SA.
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