gregoryfast
Member
- Location
- Alaska
I am hoping someone can help me with this. We had some equipment burn out during a power outage. There were 6 touch pad computer screens, POS (point of sale). Each protected by an individual UPS. The UPSs were plugged into their own transient surge suppressor. Each had an individual circuit. I POS had smoke coming out if it. A hard drive on another UPS stopped.
We suspect frequency may be the culprit. The utility is on a small island 100% isolated from the grid. Ocassionally there are spikes of 70 to 80 Hz. but only for a few cycles.
Our questions are:
1. Do UPSs make their own frequency or do they allow the system frequency to pass through with out modification?
2. Are some UPS units better for frequency protection than others?
3. Are there any other products which can protect equipment from frequency variations?
We suspect frequency may be the culprit. The utility is on a small island 100% isolated from the grid. Ocassionally there are spikes of 70 to 80 Hz. but only for a few cycles.
Our questions are:
1. Do UPSs make their own frequency or do they allow the system frequency to pass through with out modification?
2. Are some UPS units better for frequency protection than others?
3. Are there any other products which can protect equipment from frequency variations?