Power Backup & Resilience
Designing power backup for smart buildings requires coordinating UPS systems, generator automatic transfer switches (ATS), and battery storage — then supervising all of them from the building automation system. This section covers UPS selection for panels, ATS design, and KNX-based power failure supervision.
UPS Selection for Electrical Panels: IEC 62040, Sizing and Installation in DIN Rail Enclosures
UPS topology comparison (VFI/VI/VFD, IEC 62040-3), load sizing with VA and autonomy calculations, DIN rail UPS selection table covering Bicker Elektronik, Phoenix Contact QUINT, Meanwell and Siemens SITOP, battery chemistry, KNX/BACnet signalling outputs and annual maintenance procedure.
Generator ATS Integration: Automatic Transfer Switch Design and KNX Supervision
ATS operating sequence from mains loss to retransfer, open- and closed-transition switch types, genset start sequence with stabilisation delay, dual-contactor panel design with undervoltage relay settings, KNX binary input mapping for generator status, and weekly/monthly/annual test programme.
KNX Power Backup Supervision: Monitoring UPS, Generator and Battery State in ETS6
KNX binary inputs for UPS mains fail and generator running contacts, Modbus TCP UPS to KNX via Eaton gateway, ETS6 logic for emergency lighting scene and load shedding, Gira X1 dashboard with battery bargraph, Victron Cerbo GX integration, and BACnet/SCADA alarm escalation for critical facilities.
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