CYG PRS-7367 - Page 16

Table of contents
8 PRS-7367
3.33.1 IDMT curves for over quantity protection .......................................................................161
3.33.2 CB Position ....................................................................................................................163
3.34 Backup power automatic switch .............................................................. 163
3.34.1 Overview ........................................................................................................................163
3.34.2 Operation principle .........................................................................................................165
3.34.3 Application Scope ..........................................................................................................177
3.34.4 Settings ..........................................................................................................................178
3.35 Trip logic 94T .............................................................................................. 179
3.35.1 Overview ........................................................................................................................179
3.35.2 Protection Principle ........................................................................................................179
3.35.3 Application Scope ..........................................................................................................182
3.35.4 Settings ..........................................................................................................................182
3.36 Close Logic................................................................................................. 183
3.36.1 Overview ........................................................................................................................183
3.36.2 Protection Principle ........................................................................................................183
3.36.3 Application Scope ..........................................................................................................185
3.36.4 Settings ..........................................................................................................................185
3.37 Three phase inrush function OCR_INR .................................................... 185
3.37.1 Overview ........................................................................................................................185
3.37.2 Protection Principle ........................................................................................................185
3.37.3 Application Scope ..........................................................................................................186
3.37.4 Settings ..........................................................................................................................187
3.38 Wattmetric sensitive earth-fault protection SEF ..................................... 188
3.38.1 Overview ........................................................................................................................188
3.38.2 Protection Principle ........................................................................................................189
3.38.3 Application Scope ..........................................................................................................192
3.38.4 Settings ..........................................................................................................................192
3.39 Under Current Protection 37C .................................................................. 193
3.39.1 Overview ........................................................................................................................193
3.39.2 Protection Principle ........................................................................................................194