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3RW44 undervoltage

7/13/2017 6:50 PM	Rate (0)
Silvio_Morais Advanced Member Joined: 2/25/2014 Last visit: 3/14/2022 Posts: 16 Rating: (0)	Hello, I'm studying some faults due to voltage dip in our plant. 3RW44 manual says that a 15% reduction in a phase voltage for 100/200ms (acceleration/bypass) can cause tripping (loss of phase). But the specification of 3RW44 input voltage is 200 to 460 V. So, what is the base voltage for computing the 15% of reduction and cause tripping ? BR. Morais

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7/15/2017 11:34 AM	Rate (0)
PISCEAN 2010 Diamond Member Joined: 4/23/2010 Last visit: 11/23/2024 Posts: 8092 Rating: (881)	15% or 10% = rated motor operational voltage, is considered as refernce voltage.

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7/21/2017 3:26 AM	Rate (0)
Silvio_Morais Advanced Member Joined: 2/25/2014 Last visit: 3/14/2022 Posts: 16 Rating: (0)	but, as I know, there is no parameter to input rated motor voltage. So, how the soft-starter knows that information?

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