发明名称 |
OVERHEAT DIAGNOSTIC METHOD OF AIR DISCONNECTOR CONTACT PART AND ITS DEVICE |
摘要 |
PURPOSE: To accurately diagnose overheat of an air disconnector contact part without relying on experience of an operator after environmental influence is corrected. CONSTITUTION: A temperature T of an air disconnector contact part 2 is measured by an infrared ray detector 3, and temperature correction by air speed (v) and a solar radiation quantity W is added, and a corrective measured temperature Ts is obtained. This corrective measured temperature Ts is compared with a reference temperature rising valueΔTA calculated from a carrying electric current I of a measuring object part by a computing element 4, and the existence of overheat is diagnosed. Or temperatures TU, TV and TW of three phases of the air disconnector contact part 2 are measured, and the overheat is similarly diagnosed from a difference between a maximum value and a minimum value.
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申请公布号 |
JPH0883544(A) |
申请公布日期 |
1996.03.26 |
申请号 |
JP19940217546 |
申请日期 |
1994.09.12 |
申请人 |
CHUBU ELECTRIC POWER CO INC;TAKAOKA ELECTRIC MFG CO LTD;NGK INSULATORS LTD |
发明人 |
MIZUNO KAZUHIRO;AWATA MAYUKO;IMAOKA KOICHI;YONEKAWA YOSHIHIDE;KIMURA GENZO;OKANE ISAO |
分类号 |
H01H33/59;H02B3/00;(IPC1-7):H01H33/59 |
主分类号 |
H01H33/59 |
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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