Lyn, this motor is run by a VFD, so three phase protection is implicit. The fault message was “DC Bus Overvoltage”. This is a Mains Overvoltage, not a regenerative overvoltage. Our electricians verified PFCCs, Line reactors and DB resistors are all working. Therefore, the only possible reason for the overvoltage was one of the power bumps experienced over those three hours.
Respectfully,
Andy Peters
From: Lyn Burniston <Lyn.Burniston@pgn.com>
Sent: Wednesday, June 24, 2020 3:06 PM
To: Andy Peters <apeters@cityofmolalla.com>
Subject: PGE Claim
6/24/2020
City of Molalla
PO Box 248
Molalla, OR 97035
PGE Claim No: GL2020064797
Date of Loss: 5/23/2020
Dear Mr. Peters:
Thank you for contacting PGE regarding damage that occurred on 5/23/2020. We are here to help you through the claims process and are currently looking into the event that led to the damage. Once the cause has been established, we will determine whether your claim can be accepted or not. The time required to complete this investigation will depend on the complexity of the event.
We will need to know if you have three phase protection for the pump.
If we determine that we can accept your claim for payment, we will contact you by phone. If we are not able to accept your claim, you will receive a letter explaining the reason(s) why.
In the meantime, if you need to follow up or have questions, I can be reached at 503-464-7455 or Lyn.Burniston@pgn.com. I look forward to working with you toward a resolution of your claim.
Sincerely,
Lyn Burniston
Senior Claims Specialist
| Lyn Burniston
|
Sr Claims Analyst, Insurance & Claims Risk Management • 503-464-7455
| |
