发明名称 |
Apparatus and method for cooling power transformers |
摘要 |
The cooling system for a power transformer is activated by sensing and processing the frequency characteristic including the harmonic contents, of the inrush current into the transformer, when the transformer is first energized. The cooling system may include motors operating devices such as oil circulating pumps and fans causing a coolant to flow about the power transformer. The cooling system is deactivated by sensing when the transformer is de-energized and when its temperature is below a predetermined level. |
申请公布号 |
US8274769(B2) |
申请公布日期 |
2012.09.25 |
申请号 |
US20100802412 |
申请日期 |
2010.06.07 |
申请人 |
HOFFMAN GARY R.;ANDERSON JEFFREY;ADVANCED POWER TECHNOLOGIES, LLC |
发明人 |
HOFFMAN GARY R.;ANDERSON JEFFREY |
分类号 |
H02H7/04;H01F27/10;H01F27/12;H02H5/06 |
主分类号 |
H02H7/04 |
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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