DC drives for shunt AND series field motors?
DC drives for shunt AND series field motors?
(OP)
I'm looking at various (used) DC drives for use in a motor test shop. A typical example is the A-B 1395. I'm also seeing a lot of big GE drives on the used market. I haven't found much applications info on any of these drives and am unclear whether they will typically support series field motors (e.g. traction motors). The example installations generally show shunt field motors.
I know the Cutler Hammer "Responder DDC" is designed specifically for series motors in crane and similar applications, but I really don't wish to have two drives, one for series and one for shunt.
One applications guy I talked to said his company's drives would support either, but he was pretty vague on what was required.
Can anyone shed any light on the issue? Anyone know anything about these used GE drives? All I find on their website is newer stuff marketed as "TMGE" brand, and no legacy docs that I can find. Thanks!
I know the Cutler Hammer "Responder DDC" is designed specifically for series motors in crane and similar applications, but I really don't wish to have two drives, one for series and one for shunt.
One applications guy I talked to said his company's drives would support either, but he was pretty vague on what was required.
Can anyone shed any light on the issue? Anyone know anything about these used GE drives? All I find on their website is newer stuff marketed as "TMGE" brand, and no legacy docs that I can find. Thanks!





RE: DC drives for shunt AND series field motors?
As you are aware, running a series field motor needs some precautions so you do not overspeed it. But that's another story and something you have to handle anyhow.
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: DC drives for shunt AND series field motors?
Further thoughts or personal experiences welcome!
Thanks
RE: DC drives for shunt AND series field motors?
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: DC drives for shunt AND series field motors?
RE: DC drives for shunt AND series field motors?
What is the type DC2000 or silcomatic, or whatever. Supply some detalis and I will give you a link,
Tom G
RE: DC drives for shunt AND series field motors?
A variable high current and voltage supply for the armature, a second low current variable supply for shunt field supply, and a high current low voltage supply for the series field.
What I have seen work well for the series supply is a plating rectifier.
RE: DC drives for shunt AND series field motors?
Why would you want a separate source for the series field? It is, as the name implies, connected in series with the armature. I have never seen a series machine connected as a separately excited machine - why do you think it would be necessary? A high current micro-ohmmeter and a megger is all that should be required to test the series field.
----------------------------------
Sometimes I only open my mouth to swap feet...
RE: DC drives for shunt AND series field motors?
I've not had direct experience with the AB version but the Reliance drive is most excellent. And, yes, a simple resistor or series of light bulbs to fool the field regulator would be all you would need.