SURT20KRMXLT

[UpsTech1]

My client has a 208V SURT20KRMXLT. They are reporting that the incoming power occasionally drops below the required 208V reaching a low of 204v. This causes the batteries to go in to an active state and drains the batteries. The UPS can not recharge and goes into error mode due to "mains power being out of range".  The input voltage limits on the product data sheet are 160v-280v. I do not understand why it is having an issue with 204v. This is a completely normal voltage drop. They have had a Schneider tech visit the UPS and had no input. Has anyone else had a issue with their UPS?

[Teken]

Show me the following logs from the system: Event, Data, UPS

Next show me a screen capture of the power quality, upper & lower transfer voltage settings.

If the system has the ability to define the frequency and slew show me.

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