ajdelange
Well-Known Member
- First Name
- A. J.
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- Aug 1, 2019
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- EE Retired
It just occurred to me that non engineering types might not be aware that power supplies are often rated in terms of their open circuit voltage and short circuit current ratings and that this may be the source of some confusion to them. The two ABB charger labels reveal that they both have 920 V open circuit voltage capability and short circuit current capability of, respectively, 350 and 400A.
The envelope boundaries for HPC150 - 350 classes show that any charger in one of these classes must have 920 V OC capability and 500A short circuit capability. Thus these ABB chargers don't belong to any of those classes (nor do they pretend to).
The AJC500 class requires 1100 V OC capacity and 600A short circuit current.
The envelope boundaries for HPC150 - 350 classes show that any charger in one of these classes must have 920 V OC capability and 500A short circuit capability. Thus these ABB chargers don't belong to any of those classes (nor do they pretend to).
The AJC500 class requires 1100 V OC capacity and 600A short circuit current.
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