GEK-106237P MIFII Digital Feeder Relay 5
TABLE OF CONTENTS
10. INSTALLATION AND
MAINTENANCE
10.1 INSTALLATION
10.2 GROUND CONNECTION AND DISTURBANCES SUPPRESSION
10.3 MAINTENANCE
10.4 CLEANING INSTRUCTIONS
11. MII FAMILY FAQ
(FREQUENTLY ASKED
QUESTIONS)
11.1 MIFII FAQ
12. MIFII DO’S AND DON’TS 12.1 DO’S
12.2 DON’TS
13. TROUBLESHOOTING
GUIDE
13.1 MIFII TROUBLESHOOTING GUIDE
A. THERMAL IMAGE UNIT A.1 INTRODUCTION
A.2 OPERATING PRINCIPLE
A.3 ALGORITHMS
A.4 DIGITAL TECHNOLOGY AND THERMAL IMAGE RELAYS
A.5 THERMAL CURVE
A.6 MIFII THERMAL CURVES
B. TIME-CURRENT CURVES
FOR 51P AND 51N UNITS
B.1 IEC/BS142 CURVES
B.2 ANSI CURVES
B.3 IAC CURVES
C. MODBUS C.1 MODBUS FORMAT
C.2 READING VALUES
C.3 COMMAND EXECUTION
C.4 SYNCHRONIZATION
C.5 WRITING SETTINGS
C.5.1 FRAME STRUCTURE .......................................................................................C-8
C.6 ERRORS
C.7 MODBUS MAP - SETTINGS
C.8 MODBUS MAP- STATUS
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