thank you advidana for your reply and i am moving more into the installation field as have repaired and installed electric motors for 25 years plus. so many times i am not quite sure as most of my work is heavy current application and would like to pick your brain as often as possible as...
always have trouble understanding 3phase distribution boards that supply other 3phase boards which supply either other boards or directly to electric motor isolators. very new to me at the moment. anyone have any rough guides as to loading and supplies, always in factories and industrial...
thank you scottyuk and sparkyman for your replies as some areas are grey and left to individuals and good practice.always good to know how others do it.
here's another one for you.how do you generally rate distribution board supplies and i mean main feed cables in when a db board is feeding...
should the armour of swa be earthed at both ends when this is not the main earth cpc,or is earthing at one end acceptable.also how to earth the armour in plastic boxes. some good practice or regulation would be appreciated. this for u.k. industrial sites.
thanks
cn 100
motor should be free when turning by hand and short two stator terminals together and now turn it. it will be like this all the time if shorted windings. put bolt in end of shaft and look at scope across two phases when turning by socket handle as smoothly as possible. usually feedback package...
reebelec
i work in a servo repair shop (10 years plus) and we have a large magnetizer mostly used for pancake motors, tachos, and d.c.motor magnets.everything is trial and error but if you can wrap a coil around a magnet you can pulse it and de-magnetize as well as magnetize. we start out with...
hello ramcerda
i work for a servo motor repair company,and this is always a problem when connections are lost. but as long as mechanically resolver is in correct position then try enabling amplifier off load if possible and either motor will run away into high speed or draw very large...
at the moment encoder reference is taken straight off back of motor which is 1024 counts. this motor must be replaced and the new one has no encoder. provision is available on output of existing gearbox for mounting an encoder on site which is 1800 counts per rev. what is procedure for scaling...
