Loss Of Field Relay Testing - ISA T1000 PLUS User Manual

DOC. MIE91093 Rev. 1.34 Page 69 of 145
1.10 L
OSS OF FIELD RELAY TESTING
The typical connection schematic is the following.
The relay monitors voltage and current outputs of the
protected generator, and whenever a fault condition is
detected, the relay will cause the switchgear to trip in order to
preserve the generator safety. When the generator looses the
rotoric magnetic field, the working point moves, in the plan R-
X, towards the X-axis.