UPS problems

[j.wilhelm.jr87]

I have a sicce 1.5 hooked up to a budget ups($100), standard what you'd see in walmart. When you simulate a power outage, the pump wont stay on. It takes 12v7ah sealed lead acid batteries. Which I buy cases of regularly for work, so it's not a battery issue. I have the same type of UPS for my internet & tv in both my bedroom/living room, both run all of that flawlessly. Any ideas on troubleshooting?

 

[Gumbies R Us]

@Troylee might be able to help

 

[Troylee]

I’m really no help as I’ve never used an ups.. maybe @BeanAnimal ?

 

[BeanAnimal]

I have a sicce 1.5 hooked up to a budget ups($100), standard what you'd see in walmart. When you simulate a power outage, the pump wont stay on. It takes 12v7ah sealed lead acid batteries. Which I buy cases of regularly for work, so it's not a battery issue. I have the same type of UPS for my internet & tv in both my bedroom/living room, both run all of that flawlessly. Any ideas on troubleshooting?

It is likely putting out a square wave and not suitable for running the sicce. I assume the motor hums or vibrates.

 

[Jamie814]

I have a sicce 1.5 hooked up to a budget ups($100)

Maybe the UPS is bad? Have you checked the voltage out of the UPS? The sicce 1.5 is only about 23 watts so very small power draw.

 

[Jamie814]

It is likely putting out a square wave

Had to google this makes sense I guess,

"A square wave 120V output means that an inverter or power supply is producing alternating current (AC) that abruptly switches between negative and positive peak voltages, rather than following the smooth, flowing curve of a sine wave found in standard household electrical outlets. It is a simplified, cost-effective, but less efficient way to create 120V power, often used in budget inverters, UPS systems, and for powering basic resistive loads"

"A 120V square wave (or modified sine wave) inverter often fails to run pumps because AC motors require a smooth sine wave to operate properly. Square waves produce harmonic distortion and high peak voltages, leading to excessive heat, motor stalling, or failure to start due to high inductive load requirements."