Circuit for uninterruptable power supply to electrical appts.

摘要

For each redundant power supply network (VN1-VNm) an identical terminal block (AKB) is provided with individual connections for each phase (L11-Ln1 etc.) and its associated neutral line (N11-Nn1), and a protective conductor (PE1). Within a terminal block the individual connections or taps for the neutral lines are bridged and a switch (ES1) has a individual contacts for the phase and neutral lines, associated with fuses (SL11 etc.). The circuits are completed by controlled switches (KSS), output filters (F) and a control unit (UNV STR).