
MAINTENANCE BYPASS MODE
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| STATIC |
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MAINTENANCE | K5 | SWITCH |
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BYPASS SWITCH |
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| RECTIFIER | BOOST | INVERTER |
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| CONVERTER | ||
CB1 | K1 |
| K3 | |
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| MAINTENANCE |
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| BYPASS SWITCH |
CHARGER | K2 |
Main Power Flow
Breakers Contactors |
| Trickle Current |
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Closed | CB2 |
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| Energized | |
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Open |
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BATTERY
Figure 6 ---7. Path of Current Through the UPS in Maintenance Bypass Mode
6.3Functional Description
The UPS is a true online unit with a series power train. An uncontrolled rectifier feeds a boost converter, which in turn powers the inverter. The bypass utilizes a static switch and a maintenance bypass switch is internal to the unit. The unit input is
6.3.1Input Rectifier
The Input Rectifier is a full wave bridge uncontrolled rectifier, which produces an unregulated DC IN Bus. The raw DC at this point will be approximately 290 VDC. A
Powerware 9330 (10 | |
| 164201300 REV. G 061502 |