I have some class 1 / div 1 exp motors that I need to replace but having a hard to find them
The manufacturers are Siemens, CEMP SPA and ABB.
Can anybody suggest a reputable place to contact?
Prefer USA or EU supplier. Motors are to shipped to and used in West Africa
Hi there,
I am in Africa and I need to put on a very basic course on the theory, operation of voltage source VSD's for the local electricians. Do anyone have a link or a doc that I could use on a overhead for this training?
thanks in advance.
I was told that the Robicon Gen 3 power cells do not use a pre-charge circuit for the DC Bus and they actually use the high impedance of their special pahse shifting, multi tap tansformer. Can anyone confirm or deny this? if so it will be the first VSD that I have seen to not use a pre-charge...
Can someone help. we are having a debate if the secondary of a current transformer needs to be grounded?
I have never seen this done, all I have ever seen is just two leads coming of the CT going into a terminal strip or device(meter etc)
I am thinking it may be a difference between european and...
Can anyone help me explain in laymans terms the difference between a current source and a voltage source drive. I know basically the difference(diode front end compared to scr-active front end) but find it hard to explain. Even if there is link to go to would be great.
