Smart-UPS X 3000

[RafalS1]

Hello, we have Smart-UPS X 3000 with 3 batteries, recently it has been switching to battery quite often for few seconds due to distorted input. 

We had an electrician come over and test all the cables, we use commando sockets to power the UPS. He did not find any issues in cables, he switched the UPS to a different socket, no change, he also checked the mains to the building. No issues. Users also did not report any power loss in the building. 

Here is the status:

When done a self test, it passes.

Is there anything else we could try?

I've attached the data log. 

[Teken]

Based on the information you provided in the data logs this site is experiencing (Dirty Power) as defined by your user settings.

The site is seeing out of band voltage & frequency and possible THD. As such is going into battery only mode as designed and defined by you / user / default settings.

You may consider adjusting the Power Quality (Sensitivity) which impacts when the system will go into battery only mode.

Doing so will provide the cleanest power to the attached devices but will sacrifice battery service life.

You may consider adjusting the upper and lower input voltage transfer levels. Doing so will cause the system to enter into AVR mode.

Meaning the system will Trim / Boost the incoming voltage input and inverse the same on the output to a defined level.

The AVR mode is the best balance of power quality output while preserving battery service life.

Make the changes as outlined above and monitor the site for behaviour.

Keeping in mind you need to validate the attached equipment can tolerate the dirty power without locking up and expect an increase in power consumption.

If you have more questions please do ask. 👍

[RafalS1]

Hi Teken,

Thank you for reply and help with another case. Im not an electrician so I'm not sure what should be the values, please see below current values, could you advise please how to adjust it as you advised?

Cant see anywhere where to enable AVR mode.

[Teken]

Hi,

Please confirm what the input line voltage is for your region?!? Is it 230 as seen in the screen capture or 220/240 VAC?

AVR: The AVR circuit is managed by the two boxes labeled output. We can make some changes once you confirm the input voltage for your specific region.

Please keep in mind (IF) the input voltage needs to be changed. The UPS may have to be rebooted and will disconnect all connected loads.

So please ensure those devices are powered down if you need to make that change. 

[RafalS1]

The standard voltage in the region is 230V, Although you are right looking at the log it has been jumping up and down. 

[Teken]

Please review the user manual on page 13-14. There are three possible options to select and change to reflect your input power environment.

https://download.schneider-electric.com/doc/SPD_EALN-7T5L2F_EN/SU%20UM%20990-3651H%20MN01%20EN.pdf

Local Power Quality, Sensitivity, Upper / Lower Input transfer voltage.

You may try to adjust the local power quality first to FAIR vs Good. You may Also adjust the sensitivity from NORMAL vs REDUCED.

I would only adjust the power quality as a first step and monitor. As noted insure the attached equipment is designed to accept the wider input (dirty power).

Let me know how it all turns out. 👍

[RafalS1]

Hi Teken,

I believe local power quality settings are only available during the initial setup?

I've however changed the sensitivity from normal to reduced that greatly reduced the number of battery switch, since Thursday we had only 1 switch. Just wonder how that will affect the batteries, we have 3 in total connected to that UPS. We plan to replace that UPS next year. 

[Teken]

Generally speaking the long term service life will be reduced. The average service life is 2-5 years based on usage, temperature, and environmental conditions.

As noted you may also adjust the upper & lower transfer voltage. Doing so will cause the system to use the AVR circuit to trim / boost the output if and when the input voltage is out of band.

Doing so will extend the battery service life because the system will only go into battery only mode if there is a grid down event / lights out.

Or if the threshold has been met by your user defined settings. 👍