UPS Recomendation for NV+ v1

kevinb wrote:

It looks to me like you may have a line problem here, your UPS might be just fine. Have you checked your line voltage under full load at the times your UPS kicks in? If the line transfer voltage for the UPS is too close to your supply line voltage under full load. An example for a APC UPS Smart-UPS: High AVR 106/103 on battery Med AVR 103/100 on battery Low AVR 100/97 on battery Note: AVR means the UPS is using battery power to boost power to the next value up, not that the unit is entirely on battery power. You may need to get the voltmeter out to check voltages. I have been in industrial, apartment, and hotel situations where a voltage line stabilizer/line conditioner was needed, due to old power supply lines at peak load conditions or a "noisy" environment.

I know this is an old post, but just wanted to note that when AVR kicks in, it should NOT be consuming any battery power.

On inexpensive units (which this is) AVR usually works with a buck/boost transformer circuit that adjusts the incoming voltage by changing transformer taps.

I am, however, in agreement with Kevinb that the incoming line voltage (or frequency) is probably varying if the unit is switching to battery... A Kill-o-watt meter is not the best way to measure AC power issues... you really need a very high quality meter.

SteveG