- #1
mdaugird
- 10
- 0
- TL;DR Summary
- How to make air conductive without reaching breakdown voltage.
I am open to ideas of a way to test a bus bar for insulation flaws that has a 3D shape that varies in a production environment.
I have a DC bus bar that when it was just straight we would run a high potential test on a metal table that is the reference plane, and then flip it over to test the other side.
Now the bus bar is bent to have a 3D shape, and there are 14 different variants of the bends, and production could change the shape at any time.
The test voltage will be 3KVdc (Megger Test). The 3D aspect of the bus bar means that parts of the bus bar will be above the metal table that I am using as the reference plane.
The distance the bus bar is above the reference plane is about 18" in some cases.
The concept we are exploring involves a way to create a conductive atmosphere around the bus bar to avoid missing a gap in the insulation that was protected due to being so high above the table. Imagine a 2'x3' test cube that we can box in.
We didn't want to submerge the bus bar in liquid, but we could atomize a water(liquid) spray in the chamber, and use a high velocity drying air after to remove any droplets.
We have also considered using some kind of ionization technology, but it seems like ozone is a by product that could degrade the bus bar insulation.
I am interested to see if there is a different way to go than the above.
Thank you for your time and have a good day
I have a DC bus bar that when it was just straight we would run a high potential test on a metal table that is the reference plane, and then flip it over to test the other side.
Now the bus bar is bent to have a 3D shape, and there are 14 different variants of the bends, and production could change the shape at any time.
The test voltage will be 3KVdc (Megger Test). The 3D aspect of the bus bar means that parts of the bus bar will be above the metal table that I am using as the reference plane.
The distance the bus bar is above the reference plane is about 18" in some cases.
The concept we are exploring involves a way to create a conductive atmosphere around the bus bar to avoid missing a gap in the insulation that was protected due to being so high above the table. Imagine a 2'x3' test cube that we can box in.
We didn't want to submerge the bus bar in liquid, but we could atomize a water(liquid) spray in the chamber, and use a high velocity drying air after to remove any droplets.
We have also considered using some kind of ionization technology, but it seems like ozone is a by product that could degrade the bus bar insulation.
I am interested to see if there is a different way to go than the above.
Thank you for your time and have a good day