We've got a 9330 UPS that's giving us a no bypass error. We're using this UPS to step down power (to US voltage) and provide battery backup. It's working well, but it's giving us 60Hz on the output but our mains are 50Hz, it sees 50Hz and is wired for 50Hz at the back, but it's giving us 60Hz out. Do you know to change the output to 50Hz?
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bypass is not available because your input is going in one phase rotation and the bypass is going another. Both input and bypass needs to be a clockwise rotation. A cheap phase rotation meter will fix this. Call me at Gruber Power Services for free tech. support 800-658-5883 x256 ask for Eric
The charger in powerware 9 series 9120 6000i ,the fan is of a quality that it fails and the heat sink does not get sufficient cooling ,it runs on 12 volt ,i replaced it with a cpu fan from a mainboard on a pc and it works perfectly now. make sure that the fan is running else the charger might go in protection or can fail due to the transistor on heat sink fails.
open the screws and disconnect the battery look the voltage written on it and AH (ampere/hour) e.g.12v & 7ah and purchase same value battery and connect look carefully the +ve &-ve polarity of battery and connect in proper way
Power ware has a powerpass bypass switch for $200.00.
There is two inputs on this bypass switch. One for power, and one for the generator.
One ouput for your UPS. There you have it... There is your soluiton. I might add one other thing called a Power Guard, PMM117, to monitor the power of the backup generator. The time delay of this device will prevent over current from cooking your UPS power supply.
They also have a Hardwired version that is more expensive for you 5, 6 ,10KVA UPS. So a automatic bypass switch is what you need.
Replace the batteries with new one then power the UPS without load for three hours or more so that the batteries can be charged. Then disconnect or switch off power to the UPS and observe if it will till be on using the batteries. If it will be ON then your problem is solved but if it goes off then your UPS is on BYPASS