WHAT HAPPENS IF THE PHASE SEQUENCE IS IMPROPER
 |
| PHASE SEQUENCE ILLUSTRATION |
By "correct" we mean that it is the same sequence as the ship's supply (red-yellow-blue). A reversed-phase sequence (red-blue-yellow) will produce a reversed shaft rotation in all 3-phase motors because the direction of their rotating magnetic fields will be reversed with disastrous results.
HOW TO KNOW IF THE PHASE SEQUENCE IS PROPER OR NOT
By observing the rotation phase sequence indicator in the shore connection box the sequence can be found out
HOW TO RECTIFY IMPROPER PHASE SEQUENCE?
This fault is remedied by interchanging any two conductors of the shore supply cable at the connection box.
0 Comments