ABB Conceptpower DPA 500, Operating Manual, Page: 36 / 114

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Operation
6.1 Commissioning
The Conceptpower DPA 500 is a high quality electronic UPS, that must be commissioned by a fully
trained and certified field service engineer before being put into use.
The commissioning of the UPS involves the connection of the UPS and battery, the checking of the
electrical installation and operating environment of the UPS, the controlled start-up and testing of the
UPS and customer training.
WARNING
OPERATIONS ON THE UPS MUST BE PERFORMED BY A SERVICE
ENGINEER FROM THE MANUFACTURER OR FROM AN AGENT CERTIFIED
BY THE MANUFACTURER
6.2 Multi-cabinet configuration
The CONCEPTPOWER DPA 500 Cabinets may be paralleled for power capacity or for redundancy
indefinitely. Every standard CONCEPTPOWER DPA 500 is provided with the parallel option and
therefore no time-consuming upgrading is necessary on site.
power connection
parallel cable
Multidrop cable (carries the graphical display information)
Figure 13: Multi-Cabinet Configuration
The Multi-Cabinet Chain is based on a decentralized bypass architecture i.e. every UPS is provided
with its own static bypass. In a parallel system there is always one Master Module and the other
Modules are slaves. If at any time the master is faulty the next UPS (former slave) will immediately take
over the master function and the former master will switch off.
Every UPS unit in a parallel configuration is provided with a proper output parallel Isolator (IA2) which,
when opened isolates the corresponding unit from the parallel system. Once the parallel isolator (IA2)
to the load