APC G5USV040P005SAIO Scheda Tecnica Scaricare il pdf (Pagina 20)

34001813EN/AF - Page 20

2. Installation

Parallel configuration without external bypass cabinet and with separate normal and Bypass AC

inputs (maximum two units in parallel)

Upstream and downstream earth protection cables must be connected in compliance with the single UPS system

earthing arrangement.

For TNC upstream configuration, TNC option must be connected into each UPS.

If the UPS installation is equipped with earth-leakage protection upstream then you must install an isolated

transformer on each Bypass AC (A) and each Normal AC (B) sources.

Normal AC

Bypass AC

Normal AC

Bypass AC

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APC G5USV040P005SAIO Scheda Tecnica Pagina 20