Hi all We have various models of APC UPSes deployed at one of our sites and Im seeing an interesting difference in the performance of the Automatic Voltage Regulation functionality between different lineinteractive UPS models Last night due to an increase in voltage from the utility we had multiple UPSes kick into AVR mode Event message UPS Compensating for a high input voltage While in this state On a SmartUPS 750 the output voltage dropped to 110 1125V On a SmartUPS 3000 X the output voltage stayed at 1199 120V the whole time Looking at the event logs on the UPSes it doesnt look like either of them kicked over to battery so Im assuming the AVR feature is trimming the voltage Question both of these UPSes list AVR as a feature but the performance is significantly different Is there a way to tell from spec sheets etc what level of AVR exists on any given UPS model

AVR (boost/trim) differences between UPS models

Invite a Co-worker

Send a co-worker an invite to the portal.Just enter their email address and we'll connect them to register. After joining, they will belong to the same company.

Send Invite Cancel

Top Experts

User

Count

5027

195

111

108

Invite a Colleague

Found this content useful? Share it with a Colleague!

Invite a Colleague

Back to APC UPS Data Center & Enterprise Solutions Forum

153

Link copied. Please paste this link to share this article on your social media post.

Hi all,

We have various models of APC UPSes deployed at one of our sites and I'm seeing an interesting difference in the performance of the Automatic Voltage Regulation functionality between different line-interactive UPS models.

Last night - due to an increase in voltage from the utility, we had multiple UPSes kick into AVR mode (Event message: "UPS: Compensating for a high input voltage.").

While in this state:

On a Smart-UPS 750, the output voltage dropped to ~ 110 - 112.5V
On a Smart-UPS 3000 X, the output voltage stayed at 119.9 - 120V the whole time

Looking at the event logs on the UPSes, it doesn't look like either of them kicked over to battery so I'm assuming the AVR feature is trimming the voltage.

Question: both of these UPSes list AVR as a feature but the performance is significantly different. Is there a way to tell from spec sheets, etc. what level of AVR exists on any given UPS model?

Replies 0

never-displayed

You must be signed in to add attachments

never-displayed

To The Top!

Subscribing is a smart move!

You can subscribe to this forum after you log in or create your free account.