ABB Relion 620 Series - Page 741

P
Non
operating
area
Operating
area
P
Non operating area
Operating area
Q
Q
(a
)
(b)
Figure 385: Forward active overpower characteristics (a) and forward reactive
overpower characteristics (b)
P
Q
Non
operating
area
Operating
area
P
Q
Operating area
Non
operating area
(a) (b)
Figure 386: Reverse active overpower characteristics (a) and reverse reactive
overpower characteristics (b)
1MRS757644 H
Protection functions
620 series
Technical Manual
741