发明名称 |
Power distribution unit branch protection |
摘要 |
An apparatus and system are disclosed for protecting a power distribution unit from an electrical fault. A fuse interrupts a flow of electrical current in response to the electrical current rising above a current rating of the fuse. A current sensor measures the amplitude of the electrical current and outputs a current amplitude signal. A relay interrupts the flow of electrical current in response to an OFF signal. A fault module receives the current amplitude signal and sends the OFF signal to the relay in response to the amplitude of the electrical current exceeding a threshold value. The relay, the fuse, and the threshold value are selected so that a switching time of the relay is less than an opening time of the fuse for an amplitude of the electrical current between the threshold value and a maximum fault current value, so that the relay prevents the fuse from opening. |
申请公布号 |
US8405945(B2) |
申请公布日期 |
2013.03.26 |
申请号 |
US20100687362 |
申请日期 |
2010.01.14 |
申请人 |
DIMARCO ROBERT;DISHMAN CECIL C.;LINDFORS EINO A.;MALIK RANDHIR S.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
DIMARCO ROBERT;DISHMAN CECIL C.;LINDFORS EINO A.;MALIK RANDHIR S. |
分类号 |
H02H3/08;H02H5/04 |
主分类号 |
H02H3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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