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At what voltage does the ``Under Voltage`` fault display?

Ther line undervoltage fault is detected from the measurement of the DC bus voltage.

The line undervoltage fault appears when one of the following occurs:

With the line supply voltage present, the DC bus voltage is less than 450VDC for a 380 VAC line supply, or less than 575VDC with a 460VAC line supply

During operation, if the DC bus voltage is less than 400VDC for a 380VAC line supply, or less than 525VDC with a 460VAC line supply.


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