The battery charger derives its input from the unregulated DC output of the rectifier and provides regulated DC voltage and charge current to the battery. The battery charge condition is monitored by the UPS and reported by status indicators located on the LCD monitor panel. The battery is always connected to the UPS and ready to support the inverter should the utility input become unavailable.
The DC boost converter derives power from the unregulated DC rectifier and produces an elevated and stable DC voltage and current source for the inverter. The boost converter also establishes the systems output neutral for supporting single phase AC loads from any phase of the inverter output. The output neutral of the system is connected with the required neutral supplied at the utility bypass input and should never be bonded to ground at the modules output.
The inverter produces a three phase AC output to a customers load without the use of a transformer. The inverter derives power from the boost converters regulated DC and utilizes IGBT devices and
If the utility AC power is interrupted or is out of specification, the UPS automatically switches to Battery mode to support the critical load with no interruption. When utility power returns, the UPS returns to Normal mode.
If the UPS becomes overloaded or unavailable, the UPS switches to Bypass mode. The UPS automatically returns to Normal mode when the overload condition is cleared and system operation is restored within specified limits.
If the UPS suffers an internal failure, it switches automatically to Bypass mode and remains in that mode until the failure is corrected and the UPS is back in service.
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Powerware 9330 (10 | ||
164201300 REV. G 061502 |
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