Powernet Releases New Modular 3-Phase Inverter System
Powernet Releases New Modular 3-Phase Inverter System
  • Korea IT Times (info@koreaittimes.com)
  • 승인 2012.08.22 02:32
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VANNTAA, FINLAND — While the inverter market is only a fraction of the size of the UPS market, it is widely believed to have a strong growth potential, especially for devices, which requires long autonomy time and n+1 redundant secured AC supply. Latest regulations from authorities requires more and more autonomy time for data centers and industrial backup systems, which makes the inverter system even more competitive compared to UPS.

Powernet’s new inverter system offers a scalable and flexible way to use inverter technology. Now both 3-phase and 1-phase inverter systems in power range of 1…30kVA can be built by using the same inverter and bypass modules. This gives huge logistical and life time cost benefits over the typical 10-20 year usage of backup system. Warehouse costs and risks are minimized, spare part safety stock is easy to set for one universal type, maintenance persons are easy to train for system operating by the same principle and using same modules. In the long term, it is considerably more cost-effective and flexible to use an inverter to convert the AC electricity from existing batteries than to use an UPS.

Since year 2003 Powernet have delivered about 10 000 inverter modules for critical backup systems in energy, industry, rail and telecom sectors. Powernet inverter range covers AC backup solutions for all typical DC battery systems. 110VDC, 125VDC and 220VDC are mainly used in power transmission, oil and gas and industrial systems. 48VDC and 60VDC are most typical in telecom systems but also in energy and industrial systems with IT or measuring devices. 24VDC solutions are typical in rail, telecom and industrial systems. All these solutions can be now supported with 3-phase and 1-phase secured AC supply. System sizing can be optimized to use default online (rectifier+inverter) or offline (mains) supply. If for example one mains phase is missing from 3-phase system in offline mode, system can continue using two phases in offline mode and one phase using online mode as a backup supply.

Powernet believes that there is significant growth potential in the energy and industrial sectors. 'As we see it, these sectors have long depended on UPS-based solutions, but scalable inverter solution with 3-phase or 1-phase configuration will really challenge that. Systems components like batteries, rectifiers and inverters can be manufactured, moved and expanded independently as the needs change. This offers a great flexibility and minimizes the life time cost of the system in the long run unlike in UPS systems, where the whole system needs to be replaced. Above mentioned technical benefits and life-cycle cost-efficiency are steering decision-makers to prefer more sustainable solutions, such as scalable inverters, declares Business Unit Manager Tuomo Räsänen, Powernet Oy.


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