vi
I.L. 40-386.3
REL 301 AND REL 302 Version 1.7
Features added and improvements made to Version 1.11
1. REL 301 AND 302
1.1 Modified Ground distance units from partially crossed-polarized mho to self-polarized mho
units for Zone1, Zone2, Zone3, and Pilot zone. The modification requires the addition of one
reverse reach setting for each zone. New settings are as follows:
• Zone1G R
• Zone2G R
• Zone3G R
• PilotG R
1.2 Improved 3 – phase fault distance trip performance by modifying the algorithms calculation
method.
1.3 Modified LED target coordination with stored target data for faulted phases.
1.4 Modified the performance of the programmable contact outputs for Low V (low voltage) signal
operation. Low V flag is set (contact will operate) when
any
phase goes below the Low V setting
output to AND-45 A, reduces the likelihood of transient blocking logic being incorrectly enabled
for close-in faults in the forward direction.
2. REL 302 ONLY
2.1 Disabled reclose initiate from weakfeed logic. A weakfeed trip
will not
produce a reclose initiate
output.
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