Table of Contents
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Thermal phase overload protection (THOL) .................................... 118
Application .................................................................................. 118
Functionality ............................................................................... 118
Calculations ................................................................................ 120
Breaker failure protection (BFP) ...................................................... 123
Application .................................................................................. 123
Functionality ............................................................................... 125
Design ........................................................................................ 128
Calculations ................................................................................ 129
100 Hz protection (HHZ).................................................................. 131
Application .................................................................................. 131
Functionality ............................................................................... 131
Calculations ................................................................................ 132
Unbalance protection for capacitor banks (TOCC).......................... 133
Application .................................................................................. 133
Functionality ............................................................................... 133
Calculations ................................................................................ 134
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Time delayed undervoltage protection
(TUV) for two sections (TUV1)
Application .................................................................................. 138
Design ........................................................................................ 138
Calculations ................................................................................ 140
Inverse time delayed undervoltage protection (TUV2) .................... 141
Application .................................................................................. 141
Functionality ............................................................................... 141
Calculations ................................................................................ 142
Time delayed phase overvoltage protection (TOV) ......................... 143
Application .................................................................................. 143
Functionality ............................................................................... 143
Calculations ................................................................................ 144
Sudden voltage change function (SVC)........................................... 145
Application .................................................................................. 145
Functionality ............................................................................... 145
Calculations ................................................................................ 146
Line test function (LITE)................................................................... 148
Application .................................................................................. 148
Functionality ............................................................................... 148
Calculations ................................................................................ 150
Intercircuit bridging protection (TOVI).............................................. 151
Application .................................................................................. 151
Functionality ............................................................................... 151
Calculations ................................................................................ 152
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Dead line detection (DLD) ............................................................... 154
Application .................................................................................. 154
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............................................... 138
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