F5F Stay Refreshed Hardware Desktop The issue might lie with the connection or power source of the fully charged UPS.

The issue might lie with the connection or power source of the fully charged UPS.

The issue might lie with the connection or power source of the fully charged UPS.

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wahleno
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243
09-30-2016, 08:33 AM
#1
UPS model is Legrand Keor SP 1500VA.
Tested the batteries with load and found it to be functioning well. For testing, I used only one pad for charging. The UPS handles power perfectly under load, but when disconnected from the mains, a clicking sound occurs, followed by another click and power loss. The LED indicators are not working, which might indicate another issue or point to the source of this problem.
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wahleno
09-30-2016, 08:33 AM #1

UPS model is Legrand Keor SP 1500VA.
Tested the batteries with load and found it to be functioning well. For testing, I used only one pad for charging. The UPS handles power perfectly under load, but when disconnected from the mains, a clicking sound occurs, followed by another click and power loss. The LED indicators are not working, which might indicate another issue or point to the source of this problem.

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Elrithmindil
Junior Member
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41
10-20-2016, 07:35 AM
#2
Sorry, I don't have a solution for you. However, a friend a few years ago did that to test his UPS and ended up destroying it. According to the manufacturer, removing the grounding of the UPS caused the failure. Don't just unplug—it's better to switch off the main power or remove the fuse.
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Elrithmindil
10-20-2016, 07:35 AM #2

Sorry, I don't have a solution for you. However, a friend a few years ago did that to test his UPS and ended up destroying it. According to the manufacturer, removing the grounding of the UPS caused the failure. Don't just unplug—it's better to switch off the main power or remove the fuse.

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xisco_11
Junior Member
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17
10-22-2016, 10:35 PM
#3
I take that you have this UPS,
specs:
https://www.legrand.com/ecatalogue/...ie...avr-310189
If so, it outputs simulated sine wave and is not proper to back up sensitive electronics (those include: PC PSU, TV, mobile phone charging etc). Simulated sine wave is good enough only for robust devices that doesn't have sensitive electronics in them, like dumb fridge, dumb washing machine, dumb dishwasher, microwave, lights etc.
For sensitive electronics, only true/pure sine wave is appropriate.
Then, there is also the issue that some UPSes have minimal load that must be on them, when they use battery backup. If the load is less than that, UPS will not work.
While it doesn't say the minimum load on the specs, it is another possibility.
Main suspect is UPS itself being faulty since none of the LEDs on it are lighting up, but they must.
Is the UPS brand new or used?
Since if brand new, you need to 1st keep it connected to the mains from some time, to charge it's batteries. These relay clicks indicate that there is issue either with the battery (both are empty) or with inverter, that converts DC from battery to AC.
Line-interactive topology works on the basis of bypassing main electricity grid from the UPS and through it's AVR. Eg, when you have UPS connected to the mains and no battery in the UPS what-so-ever, the power is still delivered to the devices. It's only when the mains power cuts out (blackout), is when UPS switches to the battery power.
What devices exactly, is the UPS to be supposed to be backing up? PC? Something else?
Then it was a poor UPS. Or improper grounding in their home.
I did the very same power-on testing with my two UPSes (CyberPower CP1300EPFCLCD , 1300VA/780W, line-interactive, true/pure sine wave) as OP did. Albeit, i let the UPSes fully charge 1st. And since mine are proper UPSes, they remained operational even after pulling the power cord, which is expected.
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X
xisco_11
10-22-2016, 10:35 PM #3

I take that you have this UPS,
specs:
https://www.legrand.com/ecatalogue/...ie...avr-310189
If so, it outputs simulated sine wave and is not proper to back up sensitive electronics (those include: PC PSU, TV, mobile phone charging etc). Simulated sine wave is good enough only for robust devices that doesn't have sensitive electronics in them, like dumb fridge, dumb washing machine, dumb dishwasher, microwave, lights etc.
For sensitive electronics, only true/pure sine wave is appropriate.
Then, there is also the issue that some UPSes have minimal load that must be on them, when they use battery backup. If the load is less than that, UPS will not work.
While it doesn't say the minimum load on the specs, it is another possibility.
Main suspect is UPS itself being faulty since none of the LEDs on it are lighting up, but they must.
Is the UPS brand new or used?
Since if brand new, you need to 1st keep it connected to the mains from some time, to charge it's batteries. These relay clicks indicate that there is issue either with the battery (both are empty) or with inverter, that converts DC from battery to AC.
Line-interactive topology works on the basis of bypassing main electricity grid from the UPS and through it's AVR. Eg, when you have UPS connected to the mains and no battery in the UPS what-so-ever, the power is still delivered to the devices. It's only when the mains power cuts out (blackout), is when UPS switches to the battery power.
What devices exactly, is the UPS to be supposed to be backing up? PC? Something else?
Then it was a poor UPS. Or improper grounding in their home.
I did the very same power-on testing with my two UPSes (CyberPower CP1300EPFCLCD , 1300VA/780W, line-interactive, true/pure sine wave) as OP did. Albeit, i let the UPSes fully charge 1st. And since mine are proper UPSes, they remained operational even after pulling the power cord, which is expected.

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