DC - DC Convertor Question
DC - DC Convertor Question
(OP)
Hello all!
Have a quick one here:
We have a converter ASTEC LPS155 that can be feed 100-120V ac or up to 250 dc. Output is 48 V dc.
On the input connector, there are three (3) pins:
1- Ground
2- Live
3- Neutral
There are no (+) or (-) signs. Since we're feeding it
with 250 V dc, where (+) and (-) leads connect?
I blow one converter with (+) lead on neutral and (-) lead
on live, and I don't want to blow a second one. Any help?
Thanx
![[ponder] ponder](https://www.tipmaster.com/images/ponder.gif)
Have a quick one here:
We have a converter ASTEC LPS155 that can be feed 100-120V ac or up to 250 dc. Output is 48 V dc.
On the input connector, there are three (3) pins:
1- Ground
2- Live
3- Neutral
There are no (+) or (-) signs. Since we're feeding it
with 250 V dc, where (+) and (-) leads connect?
I blow one converter with (+) lead on neutral and (-) lead
on live, and I don't want to blow a second one. Any help?
Thanx
![[ponder] ponder](https://www.tipmaster.com/images/ponder.gif)





RE: DC - DC Convertor Question
RE: DC - DC Convertor Question
Here is the info sheet from Astec.
http://w
I phoned technical support. I got through almost immediately.
I got an excellent responce fom the technical person.
(case #31863)
The connections are: Positive to Line. Negative to Neutral.
There is an internal fuse that may have saved your convertor.
The replacement is a 5 Amp, 20 mm, Quick-Acting fuse.
yours
RE: DC - DC Convertor Question
RE: DC - DC Convertor Question
I would rather think that the inrush of charging the front end by a "snapped on" 250Vdc blasted the fuse.
uncle; you may need to install a resistor or some other device to limit the inrush if your fuse mysteriously blows occasionally.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: DC - DC Convertor Question
Just curious.
RE: DC - DC Convertor Question
Gunnar Englund
www.gke.org
RE: DC - DC Convertor Question
I can't think of a reason either. I wish that I'd asked.
sorry
respectfully.
RE: DC - DC Convertor Question
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: DC - DC Convertor Question
RE: DC - DC Convertor Question