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We have a APC 10000 and severals APC 2500 UPSsen. In case of a power interruption we can ge on for 20 minutes before our UPS is empty, Our most important services (we are a small internet provider based on long distance wifi networks) could be placed behind a APC 2500 UPS and could run on it for 20 minutes.
We would change our configuration to run longer without a power dip. We could transfer to an generator (small one), but it gives us an power dip (and everything has to start up again).
The idea is to connect a battery charger to the generator and connect the charger to the UPS batteries. The UPS will run on the batteries and the batteries will not be empty as long as the generator runs.
Is this possible and where can I buy a charger for this project?
In a scheme, it looks like this:
Thanks in advance,
Ap Matteman
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Not quite an answer to your question, but usually people have an automatic transfer switch between mains AC and the generator, with UPSes on the output to ride over the dip during switchover. Granted, the generator has to be capable of delivering good enough power to satisfy the UPSes.
For example:
- Main utility power goes out
- UPS detects blackout, switches to battery
- Transfer switch triggers generator auto-start
- Generator spins up
- Transfer switch changes from mains AC to the generator
- UPS detects good AC, switches back to line power (being fed from the generator).
- Main utility power returns
- Transfer switch changes from generator back to mains AC. Turns off generator.
- UPS detects a disturbance, transfers to battery for 10s or so.
- UPS switches back to wall power (now fed from main utility).
Some generators cannot provide clean AC. With these, the UPSes will continue to run on battery despite the existence of generator power. So it's important to get a good, properly sized generator.
Link copied. Please paste this link to share this article on your social media post.
Not quite an answer to your question, but usually people have an automatic transfer switch between mains AC and the generator, with UPSes on the output to ride over the dip during switchover. Granted, the generator has to be capable of delivering good enough power to satisfy the UPSes.
For example:
- Main utility power goes out
- UPS detects blackout, switches to battery
- Transfer switch triggers generator auto-start
- Generator spins up
- Transfer switch changes from mains AC to the generator
- UPS detects good AC, switches back to line power (being fed from the generator).
- Main utility power returns
- Transfer switch changes from generator back to mains AC. Turns off generator.
- UPS detects a disturbance, transfers to battery for 10s or so.
- UPS switches back to wall power (now fed from main utility).
Some generators cannot provide clean AC. With these, the UPSes will continue to run on battery despite the existence of generator power. So it's important to get a good, properly sized generator.
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