GE 850 - Page 14

1–4 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
DESCRIPTION OF THE 850 FEEDER PROTECTION SYSTEM CHAPTER 1: INTRODUCTION
Figure 1-1: 850-E and 850-D (Single Feeder System) Single Line Diagram
Figure 1-2: 850-D Single Line Diagram, Dual Feeder System
892770A6.CDR
3 CTs
CT
27P
59P
59N
59_2
VTFF
81U
81O
81R
51N 50N 67N
87G
27X
59X
METERING
TRANSIENT RECORDER
EVENT RECORDER
FAULT REPORT
LOAD
BUS
TRIP
52
CLOSE
MONITORING
CLP50BF 51P 50P 67P 51_2 50_2 67_2 49
50G/
51G
51G
50G
67G
50G/
51G
51SG
50SG 67SG
25
32N
V_2
BUS
BREAKER
32
850E/850D Single Feeder Protection System
V_0
POLE DISCORDANCE*
SOTF*
Fast Underfrequency
UV Restoration
UF Restoration
Bus Transfer
MCB
LIGHT
Broken Conductor
Load Encroachment
CT Supervision
Demand
Pulsed Outputs
Harmonic Detection
37*
21YN 27Q 27T
79
AFP
* 850-D only
55
.
3CTs
CT
27P 59P 59N 59_2 VTFF 81U 81O
81R
51N 50N 67N
RGF
FAULT REPORT
EVENT RECORDER
TRANSIENT RECORDER
METERING
LOAD
BUS
TRIP
52
CLOSE
MONITORING
CLP
50BF
51P 50P 67P 51_2 50_2 67_2 49
50G/
51G
51G 50G 67G
50G
/
51
G
51
SG
50SG 67SG
32N
V_2
BUS
BREAKER
32
850-D Dual Feeder Protection System
V_0
POLE DISCORDANCE
SOTF
Fast Underfrequency
UV Restoration
UF Restoration
MCB
L
I
G
H
T
Broken Conductor
Load Encroachment
CT Supervision
Demand
Pulsed Outputs
Harmonic Detection
37
21YN 27Q 27T
79
AFP
55
3CTs
LOAD
52
BREAKER
MONITORING
POLE DISCORDANCE
MCB 79
CLOSETRIP
3VTs
3VTs
Aux VT
27X 59X
25
894211A1.cdr