APC G5USV040P005SAIO Scheda Tecnica Scaricare il pdf (Pagina 19)

34001813EN/AF - Page 19

2. Installation

Frequency converter (without Bypass AC input)

Upstream and downstream: TT, TN or IT system with neutral distributed

Upstream and downstream: Neutral not distributed

Parallel configuration without external bypass cabinet and with common 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.

The UPS installation may be equipped with earth-leakage protection upstream on the condition that the protection

apply to:

- the normal and Bypass AC inputs

- all the parallel-connected UPSs.

Main low-

voltage

switchboard

(MLVS)

Load

Main low-

voltage

switchboard

(MLVS)

Load

The UPS installation may be equipped with earth-leakage protection upstream on the condition that the protection

apply to:

- the normal and Bypass AC inputs

- all the parallel-connected UPSs.

Normal AC

Bypass AC

Normal AC

Bypass AC

Load

Main low-

voltage

switchboard

(MLVS)

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 67 68

Nessun commento

APC G5USV040P005SAIO Scheda Tecnica Pagina 19