7SG15 MicroTAPP Application Guide
If an MPPC failure is detected when the relay is in circulating current mode (the "MPPC Failure Detection" setting
in the "System Config" Menu must be set to "Enabled" for this to occur), the relay will automatically switch to
TAPP mode.
Only those relays set to the same Transformer Group will share load and circulating current information
9.8 Alarms
A wide range of abnormal states are detected by the MicroTAPP which are available from the Fault Data option in
the relay menu and remotely via serial communication.
©2011 Siemens Protection Devices Limited
Chapter 5 Page 18 of 21