ABB REB500 - Page 10

Table of contents
2 Technical Manual
Distributed busbar protection REB500
4.1 Configuration .................................................................................33
4.2 Tripping logic .................................................................................35
Section 5 Additional protection options ...................................... 36
5.1 Breaker failure protection ...............................................................36
5.1.1 Mode of operation .....................................................................36
5.1.2 Configuration ............................................................................39
5.2 BFP neutral measurement system (BFP L0)...................................40
5.2.1 Mode of operation .....................................................................40
5.2.2 Configuration/ Current setting of BFP L0 system .......................42
5.3 Overcurrent definite time protection ................................................44
5.3.1 Mode of operation .....................................................................44
5.3.2 Configuration of overcurrent protection ......................................45
5.4 End fault protection ........................................................................46
5.4.1 Mode of operation .....................................................................46
5.4.2 Configuration ............................................................................48
5.5 Breaker pole discrepancy protection ..............................................49
5.5.1 Mode of operation .....................................................................49
5.5.2 Configuration ............................................................................50
Section 6 Additional functions ................................................... 52
6.1 Voltage release ..............................................................................52
6.1.1 Combined over- and undervoltage release ................................54
6.1.2 VT assignment ..........................................................................55
6.2 Enabling tripping commands ..........................................................55
6.2.1 Overcurrent release of the trip command...................................55
6.2.2 Release logic / matrix ................................................................57
6.2.3 Release by “31805_External release BB zone” ..........................59
6.2.4 Release by the internal voltage function ....................................59
6.3 Trip redirection ...............................................................................59