I just received a 1982 print of a pump inducer. The part has 4 blades that are angled to the rotational centerline and are tapered from the hub to the tip (3°).
The Notes read:
1. Use .012/2° cam set
2. Generate the outer side with .012/2° curved cam
3. Generate the inner side with .012/2°...
Good idea!
I was able to open the part file with e-drawings but I am not able to measure anything. At least I now have a picture to remind me of some details when I reconstruct the part. Unfortunately, e-drawings doesn't have a save as SW part file.
Gary
SW 2008 Sp3
XP Pro
4mb
During some final filleting on a finished part the hour glass came on for a moment and SW closed.
Checked in the auto recovery folder and there was nothing.
Opening the part gives the following message (after the part shows on the screen):
SolidWorks encountered an...
This should be the final note on the subject. I have been running the VFD unit on 400 Hz for about 10 hrs. There haven't been any problems. I'm able to let my spare unit remain powered up at the high frequency so I'm just going to keep track of the hours at 400 Hz.
The data that was posted...
I now have a new problem. The vfd/motor combo works so well that we would like to use something similar in the final design. So far, I have been unable to find a vfd that will run with a 400 Hz input (208 VAC 3 Ph). 50-60 Hz is all I can come up with at this time.
Does anybody have a source...
With respect the the potential overheating problem I should mention that this motor has no fan and is completely sealed. The reason this isn't a problem is the the duty cycle is about 30 sec on and then a long period (hours) of inactivity followed by another 30 sec period of operation.
During...
Just a quick update on my situation. I purchased an Automation Direct GS1-22PO. I received the unit in two days as promised. The documentation must be good as I could understand it! So far the unit has worked perfectly and is easy to program from a laptop if needed. The ability to ramp up...
Thanks to all for your comments and suggestions. As this device contains both a planetary and a bevel gearbox I would like to test at full rpm (10,000 motor). Therefore, I will go the VFD route. I have chosen a Automation Direct GS1-22PO unit which is reasonably priced and should do the job...
I need to run some tests on my mechanical system which is powered by the star connected 208VAC 400Hz motor that I asked about in an earlier thread (thanks for help). As I don't have access to 400Hz power for these tests I would like to run the motor on 60Hz 3Phase. According to the FAQs, I...
Hi waross,
The 400Hz power will come from a 35KW generator. The motor in question (new, surplus) was originally part of a piece of equipment which was also powered by a 400Hz generator. As this motor is only going to be used for a demonstration (new, dedicated motors will be used for for...
Thanks for the quick reply!
I should have said a 4 wire hookup and left out the "grounding" term. The brake will always be operated with the motor, so the transformer trick would be a nice touch.
I would still like to know (forgetting about the brake circuit) the difference between a 3 wire...
I have a 208VAC 3ph motor with a internal brake. The motor schematic shows a star (wye) layout but with the common point also going to ground (not the motor case). This is a 400Hz application if that makes any difference.
My concern is that the 28VDC brake coil shares this ground and the...
I am looking for spring design info based on the valve & retainer mass and the desired engine speed. This if for an antique (1912) 4cyl 500cc FN motorcycle engine.
Any help on atmospheric valves would be useful. I believe many of the older staionary engines used a suction operated intake.
Gary10
