P44x/EN AP/Hb
MiCOM P40 Agile P442, P444
(AP) 5-
TOR Trip logic results
Type of Fault
TOR selected Logic
(Zq)
forward
(Zq)
reverse
(logic POP/PUP)
T1
T2
TZp
TZp
T3
T4
SOTF Trip logic results
Type of Fault
SOTF
selected Logic
(Zq)
forward
(Zq)
reverse
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(with Zp forward)
T0
T2
(2)
TZp
(2)
T3
(2)
T0
(with Zp forward)
T0
T0
TZp
(2)
T3
(2)
T0
(with Zp reverse)
T0
T2
T0
T3
(2)
T4
(2)
(with Zp reverse)
T0
T0
T0
T3
(2)
T4
(2)
(With a 3Plogic)
T1
T2
TZp(TZq)
T3
T4
(Dist. scheme & 1P)
T1
(1)
T2
TZp(TZq)
T3
T4
(All Bits at 0) & No I>3
T1
(1)
T2
TZp(TZq)
T3
T4
(1): the distance trip logic is applied (trip 1 pole is autorized)
(2): if Tx < 500 ms
(3): if SOTF-TOR by the I>3 overcurrents is deactivated (next section).
3.2.7.4 Switch-on-to-Fault and Trip-on-Reclose by the I>3 Overcurrent Element (not filtered for
inrush current):
Inside the 500 ms time window initiated by the SOTF-TOR logic, an instantaneous 3 phases
trip logic signal will be issued if a fault current is measured exceeding the I>3 threshold value
(‘Group 1/Back-up I>’ menu) is measured.
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