Alstom MCAG 34 - Page 19

19
Figure 5 Testing sensitivity of generator differential protection using generator to supply
primary current
Figure 6 Checking stability of generator differential protection
A
B
C
V
87 87 87
Temporary short circuit
Generator
Isolating
links
87 Generator differential relay
V Voltmeter
A
B
C
87 87 87
Temporary short circuit
Generator
Isolating
links
87 Generator differential relay
A2 Ammeter
A2 A2 A2