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Inverter Failures related to Voltage Sags?

Inverter Failures related to Voltage Sags?

Inverter Failures related to Voltage Sags?

(OP)
What is the lowest voltage an inverter can handle on a three phase system (460VAC) before it starts to fail?

I have recently seen more and more inverter failures and I believe it is related to our incoming power. I need to know how low can the voltage drop before it fails.

RE: Inverter Failures related to Voltage Sags?

How are they failing? Capacitors blowing? Have you verified that the phases are balanced?

Joel Olson

RE: Inverter Failures related to Voltage Sags?

I should have mentioned in the previous post that most inverters have a "low voltage" fault that will protect the drive.  So I would hesitate to blame it on low voltage.

Joel Olson

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