GE D60 Instruction Manual page 32

2.1 INTRODUCTION
Table 2–1: DEVICE NUMBERS AND FUNCTIONS
DEVICE FUNCTION
NUMBER
21G Ground distance
21P Phase distance
25 Synchrocheck
2
27P Phase undervoltage
27X Auxiliary undervoltage
32N Wattmetric zero-sequence directional
50BF Breaker failure
50DD Current disturbance detector
50G Ground instantaneous overcurrent
50N Neutral instantaneous overcurrent
50P Phase instantaneous overcurrent
50_2 Negative-sequence instantaneous overcurrent
51G Ground time overcurrent
51N Neutral time overcurrent
2-2
DEVICE
NUMBER
51P
51_2
52
59C
59N
59P
59X
59_2
67N
67P
67_2
68
78
79
Figure 2–1: SINGLE LINE DIAGRAM
D60 Line Distance Protection System
2 PRODUCT DESCRIPTION
FUNCTION
Phase time overcurrent
Negative-sequence time overcurrent
AC circuit breaker
Compensated overvoltage
Neutral overvoltage
Phase overvoltage
Auxiliary overvoltage
Negative-sequence overvoltage
Neutral directional overcurrent
Phase directional overcurrent
Negative-sequence directional overcurrent
Power swing blocking
Out-of-step tripping
Automatic recloser
GE Multilin