GE F650 User Manual page 5

7. FREQUENTLY ASKED
QUESTIONS
8. F650 TROUBLESHOOTING
GUIDE
A. LOGIC OPERANDS
B. REDUNDANCY PROTOCOLS
GEK-106310AE
TABLE OF CONTENTS
6.9.4 LATCHING CIRCUITS ..................................................................................... 6-12
6.10 CONNECTIONS FOR TESTING PROTECTION ELEMENTS
6.11 INSTANTANEOUS OVERCURRENT (50PH, 50PL, 50N, 50G Y 50SG)
6.12 TIME OVERCURRENT (51PH, 51PL, 51N, 51G AND 46)
6.13 DIRECTIONAL ELEMENTS (67P, 67N, 67G, 67SG)
6.13.1 67P ELEMENT................................................................................................. 6-16
6.13.2 67N ELEMENT................................................................................................. 6-16
6.13.3 67G ELEMENT ................................................................................................ 6-18
6.13.4 67SG ELEMENT .............................................................................................. 6-19
6.14 UNDERVOLTAGE ELEMENTS (27P, 27X)
6.14.1 27P ELEMENT................................................................................................. 6-20
6.14.2 27X ELEMENT................................................................................................. 6-20
6.15 OVERVOLTAGE ELEMENTS (59P, 59X, 59NH, 59NL, 47)
6.15.1 59P ELEMENT................................................................................................. 6-21
6.15.2 59X ELEMENT................................................................................................. 6-21
6.15.3 59NH AND 59NL ELEMENTS ......................................................................... 6-22
6.15.4 47 ELEMENT - NEG SEQ OV ......................................................................... 6-23
6.16 FREQUENCY ELEMENTS (81O/81U)
6.17 RECLOSER (79)
6.17.1 RECLOSING CYCLE ....................................................................................... 6-25
6.17.2 RECLOSER STATUS ...................................................................................... 6-26
6.17.3 EXTERNAL RECLOSE INITIATION ................................................................ 6-26
6.18 THERMAL IMAGE ELEMENT (49)
7.1 COMMUNICATIONS
7.2 PROTECTION
7.3 CONTROL AND HMI
7.4 RELAY CONFIGURATION
8.1 SYMPTOMS AND RECOMMENDED ACTIONS
A.1 LOGIC OPERANDS
B.1 PRP AND HSR ETHERNET PROTOCOLS
B.1.1 PRP....................................................................................................................C-4
B.1.2 HSR....................................................................................................................C-6
B.2 RSTP (IEEE 802.1D-2004) AND DAISY CHAIN
B.2.1 RSTP DESCRIPTION ........................................................................................C-7
B.2.2 RSTP CONCEPTS.............................................................................................C-8
B.2.3 USE IN MESHED NETWORKS .........................................................................C-9
B.2.4 DAISY CHAIN ..................................................................................................C-10
B.3 LINK LOSS ALERT (LLA)
B.3.1 LLA...................................................................................................................C-11
B.3.2 LLA PRIORITY.................................................................................................C-12
B.3.3 LLA TIMEOUT..................................................................................................C-13
F650 Digital Bay Controller 3