Bassmangsj
Member
Hello.
I design electrical systems for robot cells. The robot is provided with a 30A breaker that was based on a 200V system. When we get the robot, we add a transformer for use here in the USA. Generally the transformer would be a 10kVA, 480 or 240: 208/120. I will add fuses to the secondary based on the kVA of the robot and a 10A fuse for the single phase secondary. The 30A breaker becomes the primary disconnect for the transformer.
The customer will supply the 480V to the 30A breaker that is on the robot controller. The question is, how is the supply determined? Would I tell the customer to supply 480V suitable for the 10kVA transformer or something else?
The reason for this: We have three different transformers we would supply in a cell based on the size of the robot/external axis. There is a 4kVA, 10kVA, and 18kVA. The 30A breaker does not change. I am tasked with developing a spreadsheet that the salesmen can use to tell the customer what size bus plug or breaker and conductors to install for their robot cell based on robot size, etc.
Thanks for the responses.
I design electrical systems for robot cells. The robot is provided with a 30A breaker that was based on a 200V system. When we get the robot, we add a transformer for use here in the USA. Generally the transformer would be a 10kVA, 480 or 240: 208/120. I will add fuses to the secondary based on the kVA of the robot and a 10A fuse for the single phase secondary. The 30A breaker becomes the primary disconnect for the transformer.
The customer will supply the 480V to the 30A breaker that is on the robot controller. The question is, how is the supply determined? Would I tell the customer to supply 480V suitable for the 10kVA transformer or something else?
The reason for this: We have three different transformers we would supply in a cell based on the size of the robot/external axis. There is a 4kVA, 10kVA, and 18kVA. The 30A breaker does not change. I am tasked with developing a spreadsheet that the salesmen can use to tell the customer what size bus plug or breaker and conductors to install for their robot cell based on robot size, etc.
Thanks for the responses.