AEG 600 KVA User's Guide download pdf (Page 39)

39UPS 20-30 kVA, 230 V 50/60 Hz output

User’s Guide

1026743

Revision B

10. Parallel systems

Overview

Parallel UPS configurations are recognised as either redundancy or capacity systems. The

redundancy system is used to improve the system reliability with N+1 redundant UPS module.

The capacity system for its part provides the maximum output power without focusing to the

highest system reliability.

A parameter selection is used to switch between the redundancy and capacity modes. It is

important to remember that the mode is affecting to the output power rating and overall system

reliability.

UPS modules of the parallel system share equally the load with Hot Sync™ technology. The

parallel outputs can be combined in a System Parallel Module or cabinet. It is the system

component containing the obligatory service switches. Customer’s low-voltage distribution

panel can also be used instead of the System Parallel Module. In the redundancy system,

service switches enable the maintenance or service on an UPS module. In the capacity system,

one needs to have a common system bypass switch to do the maintenance or service without

safety hazards.

Figure 19 Parallel conﬁgurations with UPS modules.

Field upgrading can be used to extend existing capacity/redundancy systems with UPS

modules. The upgrading must be carried out by service personnel from the manufacturer or

from an agent authorised by the manufacturer.

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AEG 600 KVA User's Guide Page 39