Woodward HighPROtec MCDLV4, Manual, Page: 969 / 1275

Protective Elements
Parameter Description Setting range Default Menu path
t-LVRT This timer defines the supervision interval
(window/period) for counting the number of
voltage dips to trip (“No of V dips to trip”).
The first voltage dip will start the timer. The
counted number of voltage dips will be reset
if the timer is expired. The timer will also be
reset if the maximum “No of V dips to trip”
is reached.
Only available if:AR controlled LVRT =
active
0.00 - 3000.00s 30.00s [Protection
Para
/<1..4>
/Intercon-Prot
/LVRT[1]
/General
Settings]
Vstart< A voltage dip is detected if the measured
voltage falls below this threshold.
0.00 - 2.00Vn 0.90Vn [Protection
Para
/<1..4>
/Intercon-Prot
/LVRT[1]
/LVRT Profile]
Vrecover> The voltage is recovered if the measured
voltage raises above this threshold. 0.10 - 2.00Vn 0.93Vn [Protection
Para
/<1..4>
/Intercon-Prot
/LVRT[1]
/LVRT Profile]
V(t1) Voltage value of a point V(t(n)). These
points define the LVRT profile.
0.00 - 2.00Vn 0.00Vn [Protection
Para
/<1..4>
/Intercon-Prot
/LVRT[1]
/LVRT Profile]
t1 Point in time for the corresponding voltage
value V(t(n)). These points define the LVRT
profile.
0.00 - 20.00s 0.00s [Protection
Para
/<1..4>
/Intercon-Prot
/LVRT[1]
/LVRT Profile]
V(t2) Voltage value of a point V(t(n)). These
points define the LVRT profile.
0.00 - 2.00Vn 0.00Vn [Protection
Para
/<1..4>
/Intercon-Prot
/LVRT[1]
/LVRT Profile]
969 MCDLV4 DOK-HB-MCDLV4-2E