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Thanks to all of you,vtakev,jbartos and mta2003 for your responses.

jghrist I wished that you were more conctructive rather than destructive and offensive in you respecful response.I realy know to some extend what I need,but I asked for help to get more clear idea from the more experienced people in this field. further more what we inted to do is a fabrication...

Thank you gentelmen for your responses.Please note that I am located in central Africa,and the British Standard is the most applicable here.The quality assurance is ,ainly done by the national electricity authority.The most important to them is dim. of the panel,seel thickness ,Locks and surely...

Hello We have a big project,that will need many panel boards.We are planning to build our fabrication plant.Could you advice what are the main machinary,equipment and tools required for this plant. Thank you

Thanks to all of you trying to help me identify the problem. The supplier is still resisting the idea of having a problem with the AVR.Could any of you provide me with the main specs. for the appropriate AVR that is supposed to be used in our case. The genset is made by Cat.and it has an...

Dear all Thanks very much for your input. As an updated information,yesterday we made an assessment and got measurements from the field with motor's stater specialist and he confirmed that such problem is due to a distorted and non uniform starting wave from the soft starterand this was not...

Thank you busbar for your quick response,according to the manufacturer the max. sarting capacity is 160% of the rated generators capacity(i.e 344 Amp.) for 6 sec. Do you think this is suffecient to start up the motor through the soft starter?

We have a 75 HP motor(400v,50Hz,FLA=105A)operated through a solid state starter(soft starter),usually working on the utility grid powr supply. We tried to connect it to a standby diesel generator of 150 KVA rating,the generator failed to start the motor. The strange thing with this motor that we...

Thanks to all of you helping me to get more thoughts and ideas about this control system.As for the availability of communication media,the answer is no.The only way is to use a radio system.But this brings the following questios:- 1.What is the operating frequency,if it needs prior approval...

Hello RichJ Thank you for your comment.Its diffecult to know how many starts did this motor experienced.This motor has been in operation since June 2000.Is there any preventive maintenace recommendation after a certain hours of operation especially for the mechanical...

Hellow smms Thanks much for your idea,and yes the manufacturer confirmed that its o.k .But the problem is it might be as you mentioned incomatability betwwen whats there and what was supposed to be there,the manuf.will not accept any manuf. defect claim.Please advise how we can make sure of the...

To GusD Thanks much for the response Please note that yes I am sure that the rotor was rubbing inot the stator,this was very clear after the disassebly of the motor in the workshop.Can you please advise from your experience that the thrust bearing are appropriate or not.The motor specs...

We are desining a water pump station that feeds regional reservoirs.Those reservoirs are spaced about 10-16 Km from the pump station.There is no power source available or close to the reservoirs sites.How can we install and operate the control system for starting and stopping the pumps by a...

We have experienced a noise problem with the motor that drives a vertical turbine can pump.After disassembling the motor it appeared that the rotor was touching/scratching the stator.Some opinions say that its because of the improper sized thrust bearing,but no clear cause is finalized. My worry...