Operation - The right ground fault transformer is used to detect a short circuit to airframe ground in the Right Starter/Generator (SG2) negative terminal.  The ground fault sensing circuit is active during generator operation and disabled during engine start by the Right Start PC Board (NZ010).  If a ground fault occurs while the generator is operating, the Right Generator Control Unit (BT002) de-energizes the the right generator relay to isolate the starter/generator from the bussing system.

NOTE: The measured resistance between terminals X1 and X2 on the current transformer is approximately 4.6 ohms.