GE G60 Instruction Manual page 218

5.5 GROUPED ELEMENTS
By making the characteristic angle adjustable and providing for both negative and positive values of the minimum operating
power a variety of operating characteristics can be achieved as presented in the figure below. For example, Figure (a)
below shows settings for reverse power application, while Figure (b) shows settings for low forward power application.
5
5-136
RESTRAIN
Figure 5–87: DIRECTIONAL POWER CHARACTERISTIC
(a)
Q
OPERATE RESTRAIN
RCA = 180
SMIN > 0
(c)
Q
OPERATE
RESTRAIN
o
RCA = 0
SMIN < 0
(e)
Q
OPERATE
RESTRAIN
o
RCA = 90
SMIN > 0
842702A1.CDR
Figure 5–88: DIRECTIONAL POWER ELEMENT SAMPLE APPLICATIONS
G60 Generator Management Relay
Q
OPERATE
RCA+
CALIBRATION
SMIN
P
+
-
(b)
Q
OPERATE
P
o
(d)
Q
P
RESTRAIN
(f)
Q
P
5 SETTINGS
RESTRAIN
P
RCA = 180 o
SMIN < 0
OPERATE
P
o
RCA = 0
SMIN > 0
RESTRAIN
OPERATE
P
o
RCA = 270
SMIN < 0
GE Multilin