Smooth/successful rolling trend is attachedhttps://files.engineering.com/getfile.aspx?folder=c0b8d2ba-888e-4b73-ae65-4ca600931766&file=Capture_5928a_-_Copy.JPG
Today we observed some other & new facts regarding the 2.5 MW motor. Attached find the three graphs showing trends of rolling. Two shows the tripping curves where as one is of smooth rolling.
Also we found out that Motor rated current is set at 2800 amperes & current limit is set at 200 % i-e...
Thanks, You seem to be right, as the tripping we are having are periodic after rolling 16 or so billets and than after resetting the rolling resumes without fault for another 16 or so billets i.e. without tripping.
I will update as soon as some more data is available.
Regards
Thanks to all of you in showing your deepest concern in resolve this very issue,We are in contact with Siemens china, who commissioned this drive they asked us to check the concentricity of the encoder, which is OK. Now they are in process of evaluating other possibilities and perhaps recommend...
We are using a the subject motor in seamless tube mill piercer application, the specs of the same are as under.
armature voltage: 930 volts dc
Base speed: 393 RPM
Motor rated current are 3600A at 300 RPM on 720 volts, 2830A at 393 RPM and 930 volts
Imax is twice on both above conditions.
Field...
sorry waross I could not provide the full information, actually it is an up gradation project where we are replacing MG set with a 4 quadrant dc drive with 5000 amperes armature current. The drive supplier is also responsible to provide rectifier transformer with 2 secondary winding of one...
Can someone guide in calculating transformer size for 1 mega watt DC motor with following specs.
Power: 1 Mega watts
Rated voltage: 700
Base RPM: 30
Field current: 240 Amps
Rated current: 1700 Amps
My application is plate rolling mill where current goes up to 3600 ampere, that is where we...
