GE T35 UR Series

GE Multilin T35 Transformer Protection System vii
TABLE OF CONTENTS
9.2 DIFFERENTIAL CHARACTERISTIC TEST EXAMPLES
9.2.1 INTRODUCTION................................................................................................ 9-3
9.2.2 TEST EXAMPLE 1 ............................................................................................. 9-4
9.2.3 TEST EXAMPLE 2 ............................................................................................. 9-9
9.2.4 TEST EXAMPLE 3 ........................................................................................... 9-10
9.2.5 TEST EXAMPLE 4 ........................................................................................... 9-11
9.3 INRUSH INHIBIT TEST
9.3.1 INRUSH INHIBIT TEST PROCEDURE ........................................................... 9-12
9.4 OVEREXCITATION INHIBIT TEST
9.4.1 OVEREXCITATION INHIBIT TEST PROCEDURE ......................................... 9-13
9.5 COMMISSIONING TEST TABLES
9.5.1 DIFFERENTIAL RESTRAINT TESTS.............................................................. 9-14
9.5.2 INRUSH INHIBIT TESTS ................................................................................. 9-14
9.5.3 OVEREXCITATION INHIBIT TESTS............................................................... 9-15
10. MAINTENANCE 10.1 MODULES
10.1.1 REPLACE A MODULE..................................................................................... 10-1
10.2 BATTERIES
10.2.1 REPLACE BATTERY....................................................................................... 10-3
10.2.2 DISPOSE OF BATTERY.................................................................................. 10-4
10.3 UNINSTALL AND CLEAR FILES AND DATA
10.3.1 UNINSTALL AND CLEAR FILES AND DATA.................................................. 10-7
10.4 REPAIRS
10.4.1 REPAIRS ......................................................................................................... 10-8
10.5 STORAGE
10.5.1 STORAGE........................................................................................................ 10-9
10.6 DISPOSAL
10.6.1 DISPOSAL ..................................................................................................... 10-10
A. FLEXANALOG AND
FLEXINTEGER
PARAMETERS
A.1 PARAMETER LISTS
A.1.1 FLEXANALOG ITEMS .......................................................................................A-1
A.1.2 FLEXINTEGER ITEMS ....................................................................................A-13
B. MODBUS
COMMUNICATIONS
B.1 MODBUS RTU PROTOCOL
B.1.1 INTRODUCTION................................................................................................B-1
B.1.2 PHYSICAL LAYER.............................................................................................B-1
B.1.3 DATA LINK LAYER............................................................................................B-1
B.1.4 MODBUS RTU CRC-16 ALGORITHM...............................................................B-2
B.2 MODBUS FUNCTION CODES
B.2.1 SUPPORTED FUNCTION CODES ...................................................................B-4
B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ...........B-4
B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H) ...........................................B-5
B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H) .......................................B-5
B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H) ................................B-6
B.2.6 EXCEPTION RESPONSES...............................................................................B-6
B.3 FILE TRANSFERS
B.3.1 OBTAINING RELAY FILES VIA MODBUS........................................................B-7
B.4 MEMORY MAPPING
B.4.1 MODBUS MEMORY MAP .................................................................................B-9
B.4.2 DATA FORMATS.............................................................................................B-61