The stator windings above 1000V and above 1000kW, and the neutral point connection has been led to the outlet terminal board, should be divided into phases for DC withstand voltage test;
More than 1000V and more than 1000kW, neutral point wire has been led to the out-of-line terminal board of the serum winding should be divided into phases for DC pressure resistance test; ...
The stator windings above 1000V and 1000kW, whose neutral connection has been led out to the outgoing terminal board, shall be subject to DC withstand voltage test by phase;<br>