Apc SILCON 10-40KW 400V UPS User Manual download pdf (Page 20)

20 Installation Guide APC Silcon 10-40kW 400V UPS

990-4050

External Connection

The built-in parallel board connects two or more UPS systems in parallel, either to obtain

increased system reliability or to obtain higher output power. The parallel board also ensures

correct load-sharing between paralled systems.

To prepare the UPS for parallel/redundant mode, disconnect all sources of AC and DC power

supply to the UPS and connect the ribbon cable from the parallel board to the main controller

board (the ribbon cable is delivered with the UPS).

Complete the parallel system set-up by connecting the external control cables (see below).

Follow the instructions in the “Programming Parameters for Advanced Parallel” section of this

guide to execute necessary re-programming.

NOTICE!

For reliability reasons, APC recommends separate battery packs in redundant/parallel

conigurations.

CAUTION!

DO NOT connect ribbon cable between controller and parallel card in single configurations.

Ribbon cable is for parallel operation only.

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Apc SILCON 10-40KW 400V UPS User Manual Page 20