6 MJ-5 Control Panel Automatic Mode 
Siemens Industry, Inc.     48 
 
 
6.5.4 Power Flow Modes 
The MJ-5 supports six Power Flow Modes: Forward 
Locked, Reverse Locked, Bidirectional, Neutral Reverse, 
 
Table 6.3 Tap Changer Direction 
 
Table 6.4 Tap Change Control Operation 
 
 
 
 
 
 
 
Idle Reverse, and Co-generation. Your selection of one of 
these determines which algorithm the control program uses 
under reverse power flow conditions.