pablodjv
Member
- Location
- Monterrey, Nuevo Le?n, M?xico
Hello everyone.
I have the following scenario: Three phase 750 kVA 13.8/0.48 kV transformer feeding an industrial plant through a switchgear panel. This facility has four 65 kW generators providing constant power to the system. These generators are outside of the electrical room, and they each have a 100 Amps breakers outside the electrical room.
When they come into the electrical room, they all go straight to the transformer bushings where they come together, and then they go the main breaker. I think this is wrong as it fails to provide a disconnecting means for all of the generators and short circuit condition could affect the transformer directly but I can't find a NEC reference to it. I think every generator should get to a breaker inside the main electrical room and then connect to the switchgear bus, not the transformer bushings. I would really appreciate your help.
You may find the pictures in this link: https://drive.google.com/drive/folders/0BylxSU-28G7OM1BvQmNyMVB3dWM?usp=sharing
Thanks in advance,
Pablo.
I have the following scenario: Three phase 750 kVA 13.8/0.48 kV transformer feeding an industrial plant through a switchgear panel. This facility has four 65 kW generators providing constant power to the system. These generators are outside of the electrical room, and they each have a 100 Amps breakers outside the electrical room.
When they come into the electrical room, they all go straight to the transformer bushings where they come together, and then they go the main breaker. I think this is wrong as it fails to provide a disconnecting means for all of the generators and short circuit condition could affect the transformer directly but I can't find a NEC reference to it. I think every generator should get to a breaker inside the main electrical room and then connect to the switchgear bus, not the transformer bushings. I would really appreciate your help.
You may find the pictures in this link: https://drive.google.com/drive/folders/0BylxSU-28G7OM1BvQmNyMVB3dWM?usp=sharing
Thanks in advance,
Pablo.