Testing under UL1741/UL2200
Testing under UL1741/UL2200
(OP)
We are in the process of getting UL Recognition on one of our power converters, and are required under UL1741/UL2200 (unless I have misinterpreted it) to demonstrate that the equipment remains safe when short circuits are applied across individual semiconductors and capacitors.
The problem with this is that some of these short-circuit tests will write-off the alternator that feeds the power converter, and we could get through quite an expensive amount of hardware.
Has anyone else come up against this problem? Presumably, if say a 500MW system were being tested, it would be unreasonable to expect the manufacturer to damage the alternator as part of UL testing - are compromises common?
The problem with this is that some of these short-circuit tests will write-off the alternator that feeds the power converter, and we could get through quite an expensive amount of hardware.
Has anyone else come up against this problem? Presumably, if say a 500MW system were being tested, it would be unreasonable to expect the manufacturer to damage the alternator as part of UL testing - are compromises common?





RE: Testing under UL1741/UL2200
RE: Testing under UL1741/UL2200
I would be surprised if there was a 500 MW system with a UL label.
RE: Testing under UL1741/UL2200
Incidentally, we may be modifying the design to include an mcb between the alternator and the power conditioner, to protect the alternator. That should get us through the UL testing without blowing up alternators.
RE: Testing under UL1741/UL2200
Christopher Caserta
ccaserta@us.tuv.com
Ph:904-225-0360