ABB Relion 670 Series Technical Reference Manual page 515

Line differential protection ansi

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1MRK505222-UUS C

ANSI05000019 V3 EN

Voltage profile not causing a reset of the PICKUP signal for step 1, and inverse time delay

Technical reference manual

ways to reset the timer, either the timer is reset instantaneously, or the timer value is

frozen during the reset time, or the timer value is linearly decreased during the reset time..

PU_Overvolt1

Instantaneous

Frozen Timer

Voltage protection

ANSI05000019-3-en.vsd

Relion red670