Full-step table merging route

The step meter is also called the synchronization meter. It is a meter specially used for parallel vehicles . When the frequency of the generator to be paralleled is higher than the frequency of the generator
(or system grid) that has been put into operation , the pointer of the meter rotates to the faster side; otherwise, it rotates to the slower side. When the full-step meter pointer slowly approaches the vertical red line on the meter, immediately close the parallel switch . The merging route     using the whole-step table method is shown in Figure 7-6. In the figure, S is the whole step table.