GEK-113285A G650 Generator Protection & Control System 5
TABLE OF CONTENTS
9.9 CONNECTIONS FOR TESTING PROTECTION ELEMENTS
9.10 INSTANTANEOUS OVERCURRENT (50PH, 50N, 50G Y 50SG)
9.11 TIME OVERCURRENT (51PH, 51PL, 51N, 51G)
9.12 DIRECTIONAL ELEMENTS (67N, 67G)
9.12.1 67N ELEMENT................................................................................................. 9-14
9.12.2 67G ELEMENT ................................................................................................ 9-15
9.13 UNDERVOLTAGE ELEMENTS (27P, 27X)
9.13.1 27P ELEMENT................................................................................................. 9-16
9.13.2 27X ELEMENT................................................................................................. 9-16
9.14 OVERVOLTAGE ELEMENTS (59P, 59X, 59NH)
9.14.1 59P ELEMENT................................................................................................. 9-17
9.14.2 59X ELEMENT................................................................................................. 9-17
9.14.3 59NH ELEMENT.............................................................................................. 9-18
9.14.4 47 ELEMENT - NEG SEQ OV ......................................................................... 9-19
9.15 FREQUENCY ELEMENTS (81O/81U)
10. APPLICATION EXAMPLES 10.1 EXAMPLE 1: COMMUNICATION & PROTECTION SETTINGS
PROCEDURE
10.1.1 DESCRIPTION OF THE EXERCISE ............................................................... 10-1
10.1.2 PROCEDURE TO COMMUNICATE WITH THE RELAY................................. 10-1
10.1.3 PROCEDURE TO SET THE PROTECTION FUNCTION................................ 10-3
10.1.4 TEST ................................................................................................................ 10-4
10.2 EXAMPLE 2: PROCEDURE TO SET AN OPERATION
10.2.1 DESCRIPTION OF THE EXERCISE ............................................................... 10-5
10.2.2 PROCEDURE ................................................................................................. 10-5
10.2.3 TEST ................................................................................................................ 10-7
11. FREQUENTLY ASKED
QUESTIONS
11.1 COMMUNICATIONS
11.2 PROTECTION
11.3 CONTROL AND HMI
11.4 RELAY CONFIGURATION
12. G650TROUBLESHOOTING
GUIDE
12.1 SYMPTOMS AND RECOMMENDED ACTIONS
A. LOGIC OPERANDS A.1 LOGIC OPERANDS
B. MODBUS PROTOCOL B.1 ACCESS TO G650 DATA
B.2 MODBUS G650
B.2.1 FUNCTIONS USED ...........................................................................................B-2
B.2.2 PHYSICAL LAYER.............................................................................................B-2
B.2.3 DATA LINK LAYER............................................................................................B-3
B.2.4 GENERIC READING .........................................................................................B-4
B.2.5 GENERIC WRITING ..........................................................................................B-5
B.2.6 FUNCTION CODES ..........................................................................................B-6
B.2.7 EXCEPTIONS AND ERROR RESPONDS ........................................................B-6
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