A typical setting for the negative sequence overcurrent element is 30% of the anticipated negative sequence
curr
ent resulting from loss of one phase during starting for a motor with a starting current to load current ratio of
6 to 1.
Therefore set:
I2>2 Current Set = 1/6 normal starting current or full load current
The setting for the alarm time delay is application dependent.
Chapter 6 - Current Protection Functions P24xM
108 P24xM-TM-EN-2.1
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