Mains pro 1.6.1 Global Guide
59
ROCOF filt, A.ROCOF filt [-]
Number of periods considered for evaluating ROCOF protection. Higher number means lower sensitivity and
longer evaluation time. Lower number means increased sensitivity and shorter evaluation time.
Range 1.100
Default setting 9 [-]
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LOM Init Del, A. LOM Init Del [s]
Delay for what the Loss of Mains (LOM, i.e. Vector shift and ROCOF) protection is disabled after sensing the
valid voltage on measurement terminals (stepping into the operational area of voltage and frequency).
Range 0..600 s
Default setting 3 s
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LOM Trp Del, A.LOM Trp Del [s]
Duration of Loss of Mains (LOM, i.e. Vector shift and ROCOF) protection trip. After this delay, the fault is
considered as terminated and Fault reset is possible. In case of automatic fault reset, the timer is started.
Range 0..3600 s
Default setting 3 s
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ROCOF Del/A.ROCOF Del [s]
When ROCOF value is above the ROCOF threshold, trip is delayed based on ROCOF Del setting. ROCOF
protection trips only in case that ROCOF value is above the ROCOF threshold for the ROCOF Del time. Use
the default ROCOF Del setting to 0,00 s in case that ROCOF protection should trip immediately as soon as
ROCOF value above the ROCOF threshold is detected.
Range 0..10 s
Default setting 0.5 s
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12.1.6 Group: f(BI)
Function assigned to the appropriate binary input. For description, see Library of Binary switches on page
61.
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