patm72
Electrical
- Sep 2, 2004
- 42
Hi, I'm looking for some guidance on how to integrate a MV/LV transformer in a machine. Looking for MV machines on the web, well, only MV motors pop up. If you search for MV equipment with embedded MV transformer, you invariably hit switchgear apparatus. What I have is a packaged machine comprising a PMSM with the drive and controls that normally operate at 480V, to be now offered as a 4160V "package" by simply introducing a MV/LV transformer in an adjacent enclosure.
I want to ensure the equipment can be made safe to use. Maintenance is another thing but appropriate measures can be taken to service it safely, so it is more "straightforward".
To me, it is the sheer factor of having a MV voltage transformer next to the controls that makes me wondering if there are specific considerations and measures to be taken. I don't know that such an equipment would not allow for operators to come close to it (and this will happen if it is designed that way). Think about three consecutive enclosures, each one bolted to the next:
1- Enclosure (WHD) of 48"x72"x24" for control components
2- Enclosure of 80"x96"x48" for VFD's and power components
3- Enclosure of 80"x96"x48" for transformer 1200kVA, dry type, phase-shifting 12-pulse, 4160V to 480V
I attached an image of the enclosure train for your reference.
As always, thank you for your comments.
Patrick
I want to ensure the equipment can be made safe to use. Maintenance is another thing but appropriate measures can be taken to service it safely, so it is more "straightforward".
To me, it is the sheer factor of having a MV voltage transformer next to the controls that makes me wondering if there are specific considerations and measures to be taken. I don't know that such an equipment would not allow for operators to come close to it (and this will happen if it is designed that way). Think about three consecutive enclosures, each one bolted to the next:
1- Enclosure (WHD) of 48"x72"x24" for control components
2- Enclosure of 80"x96"x48" for VFD's and power components
3- Enclosure of 80"x96"x48" for transformer 1200kVA, dry type, phase-shifting 12-pulse, 4160V to 480V
I attached an image of the enclosure train for your reference.
As always, thank you for your comments.
Patrick