CHAPTER 1: INTRODUCTION
DESCRIPTION OF THE 350 FEEDER PROTECTION SYSTEM
350 FEEDER PROTECTION SYSTEM – QUICKSTART GUIDE
3
Figure 1-1: Functional block diagram
Table 1-1: ANSI device numbers and functions
898742A7.CDR
A
350 RELAY
Y
TRIP
BUS
LOAD
3
1
52
CLOSE
50G/
51G
50P
50N
79
2
2
2
1
METERING
TRANSIENT RECORDER
EVENT RECORDER
FAULT REPORT
51N
51P
50_2
1
1
1
49
1
27X
59P
27P
59X
59_2
59N
81U
81O
CLP
50BF
1
1
1
1
1
1
2
2
MONITORING
BUS VT
67P
1
1
51_2
67N
1
CTS
25
51G/SG 67G/SG
50G/SG
I /I
1
2
27_1
1
86
VTFF
1
24
32N
2
32
50P HS
1
1
50G/SG
HS
AF
SENSORS
ANSI Code
61850 Logical Node Description
24
PVPH
Volts per Hertz
25
RSYN1
Synchrocheck
27_1
psseqPTUV1
Positive Sequence Undervoltage
27P
phsPTUV1, phsPTUV2,
phsPTUV3, phsPTUV4
Phase Undervoltage
27X
auxPTUV1
Auxiliary Undervoltage
32
PDOP1, PDOP2
Directional Power
32N
ndPDOP
Wattmetric Ground Fault
I1/I2 (46BC)
-
Broken Conductor
49
PTTR1
Thermal Overload
50_2
ngseqPIOC1
Negative Sequence Overcurrent
50BF
RBRF1
Breaker Failure
50G/SG
gndPIOC1, gndPIOC2/
hsePIOC1, hsePIOC2
Ground/Sensitive Ground Instantaneous Overcurrent
50N
ndPIOC1, ndPIOC2
Neutral Instantaneous Overcurrent
50P
phsPIOC1, phsPIOC2 Phase Instantaneous Overcurrent
51_2
ngseqPTOC1
Negative Sequence Time Overcurrent
51G/SG
gndPTOC1/hsePTOC1 Ground/Sensitive Ground Time Overcurrent
51N
ndPTOC1
Neutral Time Overcurrent
51P
phsPTOC1
Phase Time Overcurrent
59_2
ngseqPTOV1,
ngseqPTOV2
Negative Sequence Overvoltage