Three-phase supplies just keep on going
A
Riello UPS product story
Edited by the Engineeringtalk editorial team
Jul 22, 2002
PowerCentre2 three-phase-in/three-phase-out uninterruptible power systems (UPSs) offer robust power protection for industrial, medical and emergency applications and comms installations.
PowerCentre2 three-phase-in/three-phase-out uninterruptible power systems (UPSs) offer robust power protection for industrial, medical and emergency applications and comms installations.
Models available range from 200 to 800kVA, while runtimes from several minutes to many hours can be achieved by using a local standby generator, or battery extension packs.
Up to eight PowerCentre2 units can be installed in parallel, as a redundant N+1 configuration.
PowerCentre2 incorporates innovative double conversion on-line (VFI) technology with a transformer isolated inverter output.
The inverter delivers a constant, stable and clean sinewave power source, derived either from the converted mains supply, battery pack or optional Advance Galatrek CleanSource DC flywheel.
This cost-effective alternative to a traditional battery stack uses a mechanical flywheel to pack 500kW into an area no larger than a single square metre, typically one tenth the footprint of a conventional battery cabinet.
When connected to a PowerCentre2 UPS, CleanSource provides a DC supply in the event of a mains failure, bridging the power break and reducing the 'whip' effect often associated with local generator start up, as well as decreasing the initial load on an existing battery set.
CleanSource is highly efficient and, with less than 45 minutes maintenance time per annum, can save a fortune in replacement battery costs over its 20 year design life.
The outstanding circuitry design within PowerCentre2 gives superior protection when confronted by surges, sags and brownouts in the mains supply.
In addition, an exceptional ride through capability also means that PowerCentre2 models can handle short duration power failures without relying on batteries.
All PowerCentre2 models feature a three-phase output from a three-phase 400V AC input, with an input voltage range of +/-15%.
EMI input and output filters help to protect the load from upstream electrical pollution, and even provide protection from spikes and electrical noise while the unit is in static bypass mode.
Microprocessor control gives better reliability and stability, as well as providing a wide range of communication options.
An easy to use front mounted keypad and LCD panel provide full information about the status of the unit, while Advance Galatrek's optional PowerShield2 UPS management software allows easy integration with existing communications networks, including SNMP.
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