BR1500MS2 and AVR outlets

[beak]

Which outlets support Automatic Voltage Regulation on the BR1500MS2? Is it just the Battery Backup ones, or are the Surge Protected outlets supported as well?

Thank you.

[Teken]

Surprisingly, the User Manual doesn't specifically call this out. If you had a variac you could test the surge only outlets to see if the AVR circuit kicks in. A variac is a very handy tool for testing and having on hand to mimic specific AC line conditions.

In this case, as a tool to confirm if the AVR circuit is tied to the surge only outlets too. You can pick up a cheap one on Amazon or buy one second hand on eBay. Assuming you had a variac on hand you would connect the same to AC mains. The UPS would be connected to the variac and this is where you would set the voltage to 120 VAC to start.

From there you would increase / decrease the line voltage by turning the knob. 

Obviously, you would need a multimeter with its probes connected to the surge only outlets to measure what the AC line output was. If you started at 120 VAC and than reduced the voltage and you hear the UPS relay click it means the unit is boosting the output to a defined level say 110 VAC. If you see 110 VAC (as an example) on that surge only output that ONLY affirms *A* Typical line voltage. Where you will know for sure is if you turn down the voltage to say 80 VAC and the UPS will boost again to output 110 ~ 125 VAC.  

Typically, a UPS will have three transformer taps to boost / buck the line voltage.

This is why I called out the above information and to measure the output to understand how the UPS behaves and what voltage it will provide when boosting / bucking. Let's just say you have a limited budget and no access to a multimeter (DMM). An old school method to get a rough idea of what's happening is to purchase a lightbulb adaptor that allows a 100 watt *Incandescent* bulb to be screwed in while the other end has a standard 2-3 prong.

Just plug the 100 watt incandescent bulb and watch how it gets brighter / dimmer when the variac is adjusted. Let us know how you get on and what you find assuming you complete the above tests.

Rock On . . .