8_Vol3_d4 3_Section 8 electrical works_en_GIR rev6.doc  It shall include indication of:  The UPS system for the treatment plant shall fulfil the following requirements:  All equipment necessary for operation of the control and monitoring system shall be fed from the UPS system  including the following:  • The operator station including all connected equipment  • The maintenance station including all connected equipment  • The PLC's  • The Server System,  • The communication network  • The fire detection system  • The instrumentation.  • Efficiency AC/AC: min 90% • Overload, 1 min.: 150%  • Disturbance: <10%  • Power factor: >0.9  • Acoustical noise: max. 55dBA.  • EMC: VDE 871-B/0875-E  • Power source (grid or battery)  • Charging  • Battery OK  • Inverter OK  • Charger OK  50 of 124  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 08: Electrical Works  20 kva, 3 phase  3 kva  DC_UPS  3 kva (2 piece ,  parallel)  3 kva  3 kva 3 hours  1 hour  1 hour  1 hour  1 hour  1 hour  It will supply all  administrative  building, if  CCTV, fire,  phone, data  system is  located in  administrative  building, they  will be supplied  from this UPS  It will be used if  it is in separate  location from  administrative  building  It will be  located in  interior covers  of boards  It will be rack  type UPS  It will be used if  it is in separate  location from  administrative  building  It will be used  if it is in  separate  location from  administrative  building 