GE UR series

GE Multilin L60 Line Phase Comparison System 2-3
2 PRODUCT DESCRIPTION 2.1 INTRODUCTION
2
Figure 2–2: SINGLE LINE DIAGRAM
Table 2–1: ANSI DEVICE NUMBERS AND FUNCTIONS
DEVICE
NUMBER
FUNCTION DEVICE
NUMBER
FUNCTION
21G Ground distance 51P Phase time overcurrent
21P Phase distance 51_2 Negative-sequence time overcurrent
25 Synchrocheck 52 AC circuit breaker
27P Phase undervoltage 59N Neutral overvoltage
27X Auxiliary undervoltage 59P Phase overvoltage
32N Wattmetric zero-sequence directional 59X Auxiliary overvoltage
50BF Breaker failure 59_2 Negative-sequence overvoltage
50DD Disturbance detector 67N Neutral directional overcurrent
50G Ground instantaneous overcurrent 67P Phase directional overcurrent
50N Neutral instantaneous overcurrent 67_2 Negative-sequence directional overcurrent
50P Phase instantaneous overcurrent 68 Power swing blocking
50_2 Negative-sequence instantaneous overcurrent 78 Out-of-step tripping
51G Ground time overcurrent 79 Automatic recloser
51N Neutral time overcurrent 87PC Phase comparison
831707AT.CDR
52
Monitoring
50DD
Data from/to remote end
(via communications)
CLOSE
L60
Line Phase Comparison Relay
TRIP
FlexElement
TM
Transducer
inputs
Metering
50P(2)
50_2(2)
51P(2)
51_2(2)
50BF(2)
87PC
21P
67P(2)
67_2(2)
68 78
50N(2) 51N(2) 67N(2)
21G
27P(2)
59P
59N
25(2)
27X
59X
51G(2)50G(2)
79
32N(2)