What kind of UPS do I need? [closed]
I've been looking into different kinds of UPS solutions. (Standby, Line-Interactive, Standby-Ferro, Double Conversion, and Delta Conversion UPSs) So far I think I've narrowed it down to Double Conversion or Line-Interactive. However, I'm unable to determine which of them is able to:
- Supplement power to accommodate watt spikes as equipment starts/stops.
- Charge as it supplies power to equipment when watt use is down.
Which UPS type, if any, will fulfill these two requirements?
And if I could venture a closely related question...
Could such a UPS prevent a circuit breaker from tripping on a highly utilized circuit?
power-supply ups
asked Jan 22 at 5:24
primohackerprimohacker
7619
closed as off-topic by DavidPostill♦ Jan 22 at 14:38
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions seeking for hardware shopping recommendations are off-topic because they are often relevant only to the question author at the time the question was asked and tend to become obsolete quickly. Instead of asking what to buy, try asking how to find out what suits your needs." – DavidPostill
If this question can be reworded to fit the rules in the help center, please edit the question.
add a comment |
I've been looking into different kinds of UPS solutions. (Standby, Line-Interactive, Standby-Ferro, Double Conversion, and Delta Conversion UPSs) So far I think I've narrowed it down to Double Conversion or Line-Interactive. However, I'm unable to determine which of them is able to:
- Supplement power to accommodate watt spikes as equipment starts/stops.
- Charge as it supplies power to equipment when watt use is down.
Which UPS type, if any, will fulfill these two requirements?
And if I could venture a closely related question...
Could such a UPS prevent a circuit breaker from tripping on a highly utilized circuit?
power-supply ups
asked Jan 22 at 5:24
primohackerprimohacker
7619
closed as off-topic by DavidPostill♦ Jan 22 at 14:38
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions seeking for hardware shopping recommendations are off-topic because they are often relevant only to the question author at the time the question was asked and tend to become obsolete quickly. Instead of asking what to buy, try asking how to find out what suits your needs." – DavidPostill
If this question can be reworded to fit the rules in the help center, please edit the question.
There are many other questions on StackExchange about UPS. It's hardware related, and an integral component of high availability systems. No specific recommendation for an UPS solution was requested. Rather, the kind of UPS needed to solve a more broad problem. Anyone trying to fit "just one more server" on their circuit would ask a similar question. Please remove the off-topic hold.
– primohacker
Jan 22 at 17:44
add a comment |
I've been looking into different kinds of UPS solutions. (Standby, Line-Interactive, Standby-Ferro, Double Conversion, and Delta Conversion UPSs) So far I think I've narrowed it down to Double Conversion or Line-Interactive. However, I'm unable to determine which of them is able to:
- Supplement power to accommodate watt spikes as equipment starts/stops.
- Charge as it supplies power to equipment when watt use is down.
Which UPS type, if any, will fulfill these two requirements?
And if I could venture a closely related question...
Could such a UPS prevent a circuit breaker from tripping on a highly utilized circuit?
power-supply ups
asked Jan 22 at 5:24
primohackerprimohacker
7619
I've been looking into different kinds of UPS solutions. (Standby, Line-Interactive, Standby-Ferro, Double Conversion, and Delta Conversion UPSs) So far I think I've narrowed it down to Double Conversion or Line-Interactive. However, I'm unable to determine which of them is able to:
- Supplement power to accommodate watt spikes as equipment starts/stops.
- Charge as it supplies power to equipment when watt use is down.
Which UPS type, if any, will fulfill these two requirements?
And if I could venture a closely related question...
Could such a UPS prevent a circuit breaker from tripping on a highly utilized circuit?
power-supply ups
power-supply ups
asked Jan 22 at 5:24
primohackerprimohacker
7619
asked Jan 22 at 5:24
primohackerprimohacker
7619
asked Jan 22 at 5:24
primohackerprimohacker
7619
asked Jan 22 at 5:24
primohackerprimohacker
7619
asked Jan 22 at 5:24
primohackerprimohacker
7619
7619
closed as off-topic by DavidPostill♦ Jan 22 at 14:38
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions seeking for hardware shopping recommendations are off-topic because they are often relevant only to the question author at the time the question was asked and tend to become obsolete quickly. Instead of asking what to buy, try asking how to find out what suits your needs." – DavidPostill
If this question can be reworded to fit the rules in the help center, please edit the question.
closed as off-topic by DavidPostill♦ Jan 22 at 14:38
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions seeking for hardware shopping recommendations are off-topic because they are often relevant only to the question author at the time the question was asked and tend to become obsolete quickly. Instead of asking what to buy, try asking how to find out what suits your needs." – DavidPostill
If this question can be reworded to fit the rules in the help center, please edit the question.
There are many other questions on StackExchange about UPS. It's hardware related, and an integral component of high availability systems. No specific recommendation for an UPS solution was requested. Rather, the kind of UPS needed to solve a more broad problem. Anyone trying to fit "just one more server" on their circuit would ask a similar question. Please remove the off-topic hold.
– primohacker
Jan 22 at 17:44
add a comment |
There are many other questions on StackExchange about UPS. It's hardware related, and an integral component of high availability systems. No specific recommendation for an UPS solution was requested. Rather, the kind of UPS needed to solve a more broad problem. Anyone trying to fit "just one more server" on their circuit would ask a similar question. Please remove the off-topic hold.
– primohacker
Jan 22 at 17:44
There are many other questions on StackExchange about UPS. It's hardware related, and an integral component of high availability systems. No specific recommendation for an UPS solution was requested. Rather, the kind of UPS needed to solve a more broad problem. Anyone trying to fit "just one more server" on their circuit would ask a similar question. Please remove the off-topic hold.
– primohacker
Jan 22 at 17:44
There are many other questions on StackExchange about UPS. It's hardware related, and an integral component of high availability systems. No specific recommendation for an UPS solution was requested. Rather, the kind of UPS needed to solve a more broad problem. Anyone trying to fit "just one more server" on their circuit would ask a similar question. Please remove the off-topic hold.
– primohacker
Jan 22 at 17:44
add a comment |
1 Answer
1
active
oldest
votes
It is theoretically possible that both UPS's could do this if specifically designed to, but I would hazard that most are not designed to do this. (Note that "watt spikes" is probably less accurate a term then current spikes, but I guess they are the same thing, if we assume that the voltage is constant - equipment won't generally cause an increase in voltage).
Generally a UPS requires MORE current on the input then on the output for 2 reasons - (1) to charge the battery and (2) to take into account inefficiencies of the UPS components. I would speculate that a double conversion UPS would be more likely to handle this eventuality as the input and output are at least somewhat decoupled - on the flip side they are generally less efficient.
answered Jan 22 at 5:33
davidgodavidgo
44.3k75292
Is there a feature name to look for that would indicate this capability?
– primohacker
Jan 24 at 2:11
I don't think so, because I'm not sure it exists. I am not an electrical engineer, but I seem to recall that there are circuits which do "current limiting" or "current clamping". It occurs to me that if you can find one (or more likely get one built - it should not be that expensive (depending on the maximum current), if you put this before an Online (double conversion) UPS, the device would prevent to much current being drawn and the UPS should, in theory, provide the deficit.
– davidgo
Jan 24 at 2:16
1
Another approach might be purchase a battery charger, battery and inverter, and "make your own" UPS which would have this feature - ie the charge speed would be dictated by the charger, and the inverter could be specced larger then the charger because the battery is handling this. Probably not a good idea for larger systems though.
– davidgo
Jan 24 at 2:18
Thanks @davidgo! I'm might DIY this after all. I have a remote site with a shared circuit and limited load availability. I'm just running some basic gear, but don't want to trip the breaker in this sensitive environment...
– primohacker
Jan 24 at 2:20
If going the DIY route, remember that (to the first order approximation - I'm ignoring the difference between Watt and VA, which can be 30%), Watts=Current x Voltage, so a large car battery charger which can charge at say 12 volt, 10 amp is only able to provide 120 watts to the battery. Of-course if you get 12 volt batteries, wire them in series, and get a charger capable of 24 volts you get 240 watts - of-course you then need an inverter which can take 24 volts input...
– davidgo
Jan 24 at 2:33
|
show 9 more comments
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
It is theoretically possible that both UPS's could do this if specifically designed to, but I would hazard that most are not designed to do this. (Note that "watt spikes" is probably less accurate a term then current spikes, but I guess they are the same thing, if we assume that the voltage is constant - equipment won't generally cause an increase in voltage).
Generally a UPS requires MORE current on the input then on the output for 2 reasons - (1) to charge the battery and (2) to take into account inefficiencies of the UPS components. I would speculate that a double conversion UPS would be more likely to handle this eventuality as the input and output are at least somewhat decoupled - on the flip side they are generally less efficient.
answered Jan 22 at 5:33
davidgodavidgo
44.3k75292
Is there a feature name to look for that would indicate this capability?
– primohacker
Jan 24 at 2:11
I don't think so, because I'm not sure it exists. I am not an electrical engineer, but I seem to recall that there are circuits which do "current limiting" or "current clamping". It occurs to me that if you can find one (or more likely get one built - it should not be that expensive (depending on the maximum current), if you put this before an Online (double conversion) UPS, the device would prevent to much current being drawn and the UPS should, in theory, provide the deficit.
– davidgo
Jan 24 at 2:16
1
Another approach might be purchase a battery charger, battery and inverter, and "make your own" UPS which would have this feature - ie the charge speed would be dictated by the charger, and the inverter could be specced larger then the charger because the battery is handling this. Probably not a good idea for larger systems though.
– davidgo
Jan 24 at 2:18
Thanks @davidgo! I'm might DIY this after all. I have a remote site with a shared circuit and limited load availability. I'm just running some basic gear, but don't want to trip the breaker in this sensitive environment...
– primohacker
Jan 24 at 2:20
If going the DIY route, remember that (to the first order approximation - I'm ignoring the difference between Watt and VA, which can be 30%), Watts=Current x Voltage, so a large car battery charger which can charge at say 12 volt, 10 amp is only able to provide 120 watts to the battery. Of-course if you get 12 volt batteries, wire them in series, and get a charger capable of 24 volts you get 240 watts - of-course you then need an inverter which can take 24 volts input...
– davidgo
Jan 24 at 2:33
|
show 9 more comments
It is theoretically possible that both UPS's could do this if specifically designed to, but I would hazard that most are not designed to do this. (Note that "watt spikes" is probably less accurate a term then current spikes, but I guess they are the same thing, if we assume that the voltage is constant - equipment won't generally cause an increase in voltage).
Generally a UPS requires MORE current on the input then on the output for 2 reasons - (1) to charge the battery and (2) to take into account inefficiencies of the UPS components. I would speculate that a double conversion UPS would be more likely to handle this eventuality as the input and output are at least somewhat decoupled - on the flip side they are generally less efficient.
answered Jan 22 at 5:33
davidgodavidgo
44.3k75292
Is there a feature name to look for that would indicate this capability?
– primohacker
Jan 24 at 2:11
I don't think so, because I'm not sure it exists. I am not an electrical engineer, but I seem to recall that there are circuits which do "current limiting" or "current clamping". It occurs to me that if you can find one (or more likely get one built - it should not be that expensive (depending on the maximum current), if you put this before an Online (double conversion) UPS, the device would prevent to much current being drawn and the UPS should, in theory, provide the deficit.
– davidgo
Jan 24 at 2:16
1
Another approach might be purchase a battery charger, battery and inverter, and "make your own" UPS which would have this feature - ie the charge speed would be dictated by the charger, and the inverter could be specced larger then the charger because the battery is handling this. Probably not a good idea for larger systems though.
– davidgo
Jan 24 at 2:18
Thanks @davidgo! I'm might DIY this after all. I have a remote site with a shared circuit and limited load availability. I'm just running some basic gear, but don't want to trip the breaker in this sensitive environment...
– primohacker
Jan 24 at 2:20
If going the DIY route, remember that (to the first order approximation - I'm ignoring the difference between Watt and VA, which can be 30%), Watts=Current x Voltage, so a large car battery charger which can charge at say 12 volt, 10 amp is only able to provide 120 watts to the battery. Of-course if you get 12 volt batteries, wire them in series, and get a charger capable of 24 volts you get 240 watts - of-course you then need an inverter which can take 24 volts input...
– davidgo
Jan 24 at 2:33
|
show 9 more comments
It is theoretically possible that both UPS's could do this if specifically designed to, but I would hazard that most are not designed to do this. (Note that "watt spikes" is probably less accurate a term then current spikes, but I guess they are the same thing, if we assume that the voltage is constant - equipment won't generally cause an increase in voltage).
Generally a UPS requires MORE current on the input then on the output for 2 reasons - (1) to charge the battery and (2) to take into account inefficiencies of the UPS components. I would speculate that a double conversion UPS would be more likely to handle this eventuality as the input and output are at least somewhat decoupled - on the flip side they are generally less efficient.
answered Jan 22 at 5:33
davidgodavidgo
44.3k75292
It is theoretically possible that both UPS's could do this if specifically designed to, but I would hazard that most are not designed to do this. (Note that "watt spikes" is probably less accurate a term then current spikes, but I guess they are the same thing, if we assume that the voltage is constant - equipment won't generally cause an increase in voltage).
Generally a UPS requires MORE current on the input then on the output for 2 reasons - (1) to charge the battery and (2) to take into account inefficiencies of the UPS components. I would speculate that a double conversion UPS would be more likely to handle this eventuality as the input and output are at least somewhat decoupled - on the flip side they are generally less efficient.
answered Jan 22 at 5:33
davidgodavidgo
44.3k75292
answered Jan 22 at 5:33
davidgodavidgo
44.3k75292
answered Jan 22 at 5:33
davidgodavidgo
44.3k75292
answered Jan 22 at 5:33
davidgodavidgo
44.3k75292
44.3k75292
Is there a feature name to look for that would indicate this capability?
– primohacker
Jan 24 at 2:11
I don't think so, because I'm not sure it exists. I am not an electrical engineer, but I seem to recall that there are circuits which do "current limiting" or "current clamping". It occurs to me that if you can find one (or more likely get one built - it should not be that expensive (depending on the maximum current), if you put this before an Online (double conversion) UPS, the device would prevent to much current being drawn and the UPS should, in theory, provide the deficit.
– davidgo
Jan 24 at 2:16
1
Another approach might be purchase a battery charger, battery and inverter, and "make your own" UPS which would have this feature - ie the charge speed would be dictated by the charger, and the inverter could be specced larger then the charger because the battery is handling this. Probably not a good idea for larger systems though.
– davidgo
Jan 24 at 2:18
Thanks @davidgo! I'm might DIY this after all. I have a remote site with a shared circuit and limited load availability. I'm just running some basic gear, but don't want to trip the breaker in this sensitive environment...
– primohacker
Jan 24 at 2:20
If going the DIY route, remember that (to the first order approximation - I'm ignoring the difference between Watt and VA, which can be 30%), Watts=Current x Voltage, so a large car battery charger which can charge at say 12 volt, 10 amp is only able to provide 120 watts to the battery. Of-course if you get 12 volt batteries, wire them in series, and get a charger capable of 24 volts you get 240 watts - of-course you then need an inverter which can take 24 volts input...
– davidgo
Jan 24 at 2:33
|
show 9 more comments
Is there a feature name to look for that would indicate this capability?
– primohacker
Jan 24 at 2:11
I don't think so, because I'm not sure it exists. I am not an electrical engineer, but I seem to recall that there are circuits which do "current limiting" or "current clamping". It occurs to me that if you can find one (or more likely get one built - it should not be that expensive (depending on the maximum current), if you put this before an Online (double conversion) UPS, the device would prevent to much current being drawn and the UPS should, in theory, provide the deficit.
– davidgo
Jan 24 at 2:16
1
Another approach might be purchase a battery charger, battery and inverter, and "make your own" UPS which would have this feature - ie the charge speed would be dictated by the charger, and the inverter could be specced larger then the charger because the battery is handling this. Probably not a good idea for larger systems though.
– davidgo
Jan 24 at 2:18
Thanks @davidgo! I'm might DIY this after all. I have a remote site with a shared circuit and limited load availability. I'm just running some basic gear, but don't want to trip the breaker in this sensitive environment...
– primohacker
Jan 24 at 2:20
If going the DIY route, remember that (to the first order approximation - I'm ignoring the difference between Watt and VA, which can be 30%), Watts=Current x Voltage, so a large car battery charger which can charge at say 12 volt, 10 amp is only able to provide 120 watts to the battery. Of-course if you get 12 volt batteries, wire them in series, and get a charger capable of 24 volts you get 240 watts - of-course you then need an inverter which can take 24 volts input...
– davidgo
Jan 24 at 2:33
Is there a feature name to look for that would indicate this capability?
– primohacker
Jan 24 at 2:11
Is there a feature name to look for that would indicate this capability?
– primohacker
Jan 24 at 2:11
I don't think so, because I'm not sure it exists. I am not an electrical engineer, but I seem to recall that there are circuits which do "current limiting" or "current clamping". It occurs to me that if you can find one (or more likely get one built - it should not be that expensive (depending on the maximum current), if you put this before an Online (double conversion) UPS, the device would prevent to much current being drawn and the UPS should, in theory, provide the deficit.
– davidgo
Jan 24 at 2:16
I don't think so, because I'm not sure it exists. I am not an electrical engineer, but I seem to recall that there are circuits which do "current limiting" or "current clamping". It occurs to me that if you can find one (or more likely get one built - it should not be that expensive (depending on the maximum current), if you put this before an Online (double conversion) UPS, the device would prevent to much current being drawn and the UPS should, in theory, provide the deficit.
– davidgo
Jan 24 at 2:16
1
1
Another approach might be purchase a battery charger, battery and inverter, and "make your own" UPS which would have this feature - ie the charge speed would be dictated by the charger, and the inverter could be specced larger then the charger because the battery is handling this. Probably not a good idea for larger systems though.
– davidgo
Jan 24 at 2:18
Another approach might be purchase a battery charger, battery and inverter, and "make your own" UPS which would have this feature - ie the charge speed would be dictated by the charger, and the inverter could be specced larger then the charger because the battery is handling this. Probably not a good idea for larger systems though.
– davidgo
Jan 24 at 2:18
Thanks @davidgo! I'm might DIY this after all. I have a remote site with a shared circuit and limited load availability. I'm just running some basic gear, but don't want to trip the breaker in this sensitive environment...
– primohacker
Jan 24 at 2:20
Thanks @davidgo! I'm might DIY this after all. I have a remote site with a shared circuit and limited load availability. I'm just running some basic gear, but don't want to trip the breaker in this sensitive environment...
– primohacker
Jan 24 at 2:20
If going the DIY route, remember that (to the first order approximation - I'm ignoring the difference between Watt and VA, which can be 30%), Watts=Current x Voltage, so a large car battery charger which can charge at say 12 volt, 10 amp is only able to provide 120 watts to the battery. Of-course if you get 12 volt batteries, wire them in series, and get a charger capable of 24 volts you get 240 watts - of-course you then need an inverter which can take 24 volts input...
– davidgo
Jan 24 at 2:33
If going the DIY route, remember that (to the first order approximation - I'm ignoring the difference between Watt and VA, which can be 30%), Watts=Current x Voltage, so a large car battery charger which can charge at say 12 volt, 10 amp is only able to provide 120 watts to the battery. Of-course if you get 12 volt batteries, wire them in series, and get a charger capable of 24 volts you get 240 watts - of-course you then need an inverter which can take 24 volts input...
– davidgo
Jan 24 at 2:33
|
show 9 more comments
There are many other questions on StackExchange about UPS. It's hardware related, and an integral component of high availability systems. No specific recommendation for an UPS solution was requested. Rather, the kind of UPS needed to solve a more broad problem. Anyone trying to fit "just one more server" on their circuit would ask a similar question. Please remove the off-topic hold.
– primohacker
Jan 22 at 17:44