Toshiba GR-200 Series Instruction Manual page 6

Contents
1 Introduction ......................................................................................................................................... 1
Relay applications......................................................................................................................... 2
Control and monitoring application ............................................................................................. 5
Monitoring and recording functions ............................................................................................ 5
Hardware overview ....................................................................................................................... 6
Symbols used in logical diagrams ................................................................................................ 7
Abbreviation................................................................................................................................. 11
Function Block (FB), Function ID, Signal number (Data ID) .................................................. 12
2 Relay application ............................................................................................................................... 14
Overcurrent protection (OC) ...................................................................................................... 16
Relay polarity ...................................................................................................................... 17
2.1.1
Inverse time and definite time delay characteristic .......................................................... 21
2.1.2
Threshold value for operation ............................................................................................. 28
2.1.3
Reset Ratio ........................................................................................................................... 28
2.1.4
Application for motor protection ......................................................................................... 29
2.1.5
Miscellaneous functions ...................................................................................................... 30
2.1.6
Scheme logic ........................................................................................................................ 31
2.1.7
Setting .................................................................................................................................. 33
2.1.8
Signal ................................................................................................................................... 38
2.1.9
Earth fault protection (EF) ........................................................................................................ 41
Relay polarity ...................................................................................................................... 42
2.2.1
Inverse time and definite time delay characteristic .......................................................... 44
2.2.2
Threshold level for operation .............................................................................................. 49
2.2.3
Reset Ratio ........................................................................................................................... 49
2.2.4
Miscellaneous functions ...................................................................................................... 50
2.2.5
Scheme logic ........................................................................................................................ 50
2.2.6
Setting .................................................................................................................................. 52
2.2.7
Signal ................................................................................................................................... 56
2.2.8
Directional earth fault command protection (DEFCAR) .......................................................... 58
Permissive overreach protection (POP) .............................................................................. 59
2.3.1
Unblocking overreach protection (UOP) ............................................................................. 62
2.3.2
Blocking overreach protection (BOP) ................................................................................. 62
2.3.3
Setting .................................................................................................................................. 65
2.3.4
Signal ................................................................................................................................... 66
2.3.5
Sensitive earth fault protection (SEF) ....................................................................................... 69
Relay polarity ...................................................................................................................... 70
2.4.1
Inverse time and definite time delay characteristic .......................................................... 72
2.4.2
Threshold level for operation .............................................................................................. 79
2.4.3
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6F2T0200 (0.15)