ABB REF615 - Page 10

Transient/intermittent earth-fault protection INTRPTEF............154
Identification.........................................................................154
Functionality.........................................................................155
Application............................................................................155
Unbalance protection......................................................................158
Negative phase-sequence current protection NSPTOC............158
Identification.........................................................................158
Functionality.........................................................................159
Application............................................................................159
Phase discontinuity PDNSPTOC...............................................159
Identification.........................................................................159
Functionality.........................................................................160
Application............................................................................160
Arc protection ARCSARC...............................................................162
Identification..............................................................................162
Functionality..............................................................................162
Application.................................................................................162
Voltage protection...........................................................................166
Overvoltage protection PHPTOV...............................................166
Identification.........................................................................166
Functionality.........................................................................167
Application............................................................................167
Undervoltage protection PHPTUV.............................................167
Identification.........................................................................167
Functionality.........................................................................168
Application............................................................................168
Residual overvoltage protection ROVPTOV..............................169
Identification.........................................................................169
Functionality.........................................................................169
Application............................................................................169
Negative sequence overvoltage protection NSPTOV................170
Identification.........................................................................170
Functionality.........................................................................170
Application............................................................................170
Positive sequence undervoltage protection PSPTUV...............171
Identification.........................................................................171
Functionality.........................................................................171
Application............................................................................171
Section 6 Protection related functions..........................................181
Three-phase inrush detector INRPHAR.........................................181
Identification..............................................................................181
Functionality..............................................................................181
Application.................................................................................181
Table of contents
4 REF615
Application Manual