ABB REG670 - Page 18

Functionality.............................................................................. 505
Function block........................................................................... 505
Signals.......................................................................................505
Settings......................................................................................506
Monitored data...........................................................................508
Operation principle.................................................................... 508
Measurement principle......................................................... 508
Time delay............................................................................508
Blocking................................................................................514
Design.................................................................................. 514
Technical data........................................................................... 515
Overexcitation protection OEXPVPH ............................................ 516
Identification.............................................................................. 516
Functionality.............................................................................. 516
Function block........................................................................... 516
Signals.......................................................................................517
Settings......................................................................................517
Monitored data...........................................................................518
Operation principle.................................................................... 518
Measured voltage.................................................................521
Operate time of the overexcitation protection.......................522
Cooling................................................................................. 525
Overexcitation protection function measurands................... 525
Overexcitation alarm............................................................ 526
Logic diagram.......................................................................527
Technical data........................................................................... 527
Voltage differential protection VDCPTOV ......................................528
Identification.............................................................................. 528
Functionality.............................................................................. 528
Function block........................................................................... 528
Signals.......................................................................................528
Settings......................................................................................529
Monitored data...........................................................................530
Operation principle.................................................................... 530
Technical data........................................................................... 531
100% Stator earth fault protection, 3rd harmonic based STEFPHIZ532
Identification.............................................................................. 532
Functionality.............................................................................. 532
Function block........................................................................... 533
Signals.......................................................................................534
Settings......................................................................................535
Monitored data...........................................................................535
Operation principle.................................................................... 536
Table of contents
12
Technical manual