Electrical/Electronic Question

[RFB]

Thank you gentlemen,

Unfortunately my ups's are Belkin 550 and CyberPower 850AVR with no sensitivity controls.

I am plugged into the backup outlets on the UPS's

The CyberPower has an LED indicator panel that shows the input power...120-120 volts AC, at 62Hz, but it will not allow output.

 

[RFB]

I just found this on the CyberPower site:

"CyberPower UPS systems are not designed to work with generators. Many generators output a ‘dirty’ AC signal that is not recognized by the UPS, which causes it to remain functioning off battery power."

 

[k0ua]

I just found this on the CyberPower site:

"CyberPower UPS systems are not designed to work with generators. Many generators output a ‘dirty’ AC signal that is not recognized by the UPS, which causes it to remain functioning off battery power."

Yeah looks like you are out of luck there, unless you swap if for one of the APC UPS's..That have the sensitivity control. My APC 1000 works fine on the Generator after the adjustment.

 

[Short Game]

With a gen set that large (or any size, for that matter) I hope you are completely isolated from the grid when it is hooked in, including being locally grounded and breaking your neutral circuit back to the transformer. To not do this endangers the linemen.

 

[troutsqueezer]

Buy a laptop.

 

[RFB]

Yes sir, this is completely isolated with a 400 amp seevice entrance rated manual trasnfer switch.

 

[RFB]

Sorry for the typos.

 

[RFB]

The router and modem use wall warts and the computer IMac I believe transforms to DC as well, so I think that all of these systems are DC.

As I mentioned, this is setup to buy time for an orderly shutdown, not to run while on gen power since there is no internet access for power failures in this neck o' woods.

The puzzle for me was why the ups's did not function on gen power, and I think that is solved.

I sincerely appreciate all the help.

 

[sandman2234]

Just a thought to consider if I read this right...
Seems you generator kicks on, shows the apc is charging, but it's not. The stuff plugged into it(your computer) continues to work, except they are draining the apc's reserve power.
Another way around it, if i read this right, is to charge the battery of the apc via the tractor's alternator, instead of converting 120 to 12 and then back to 120 for the computer to run. (Assuming the battery in the apc is 12v). Takes another set of wires to run, maybe adding a 12v plug on the apc so that charging the battery straight from 12v is not so much of a hassle. Also might consider moving the apc closer to where the tractor typically sits during generator useage.
More than one way to skin a cat...and since all an apc consists of is a 120v to 12v (ie battery charger) a storage device (ie a battery) and a 12v invertor to convert the stored power to 120v. By charging the battery from the tractor's alternator, you just skipped one of the process'.
David from jax

 

[yelbike]

Just a thought to consider if I read this right...
Seems you generator kicks on, shows the apc is charging, but it's not. The stuff plugged into it(your computer) continues to work, except they are draining the apc's reserve power.
Another way around it, if i read this right, is to charge the battery of the apc via the tractor's alternator, instead of converting 120 to 12 and then back to 120 for the computer to run. (Assuming the battery in the apc is 12v). Takes another set of wires to run, maybe adding a 12v plug on the apc so that charging the battery straight from 12v is not so much of a hassle. Also might consider moving the apc closer to where the tractor typically sits during generator useage.
More than one way to skin a cat...and since all an apc consists of is a 120v to 12v (ie battery charger) a storage device (ie a battery) and a 12v invertor to convert the stored power to 120v. By charging the battery from the tractor's alternator, you just skipped one of the process'.
David from jax

I don't know if the UPS will like the alternator power. Its a pretty unstable power supply voltage varies to much and unclean power. Just a thought.