发明名称 |
SWITCH WITH PRE-ALARM MEANS |
摘要 |
In a switch with pre-alarm means (101) having pre-alarming apparatus (20, 21) and an indicator (103) for alarming that value of current flowing on a load is above a predetermined alarming level, output of the pre-alarming apparatus is held at a predetermined level after the value of the current once becomes above the alarming level by self-holding function of thyristor (CR) even when the value of the current becomes below the alarming level after that. |
申请公布号 |
EP0349929(A3) |
申请公布日期 |
1990.08.08 |
申请号 |
EP19890112003 |
申请日期 |
1989.06.30 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
ISHII, KAZUHIRO C/ FUKUYAMA SEISAKUSHO;KIMURA, KENZI C/ FUKUYAMA SEISAKUSHO |
分类号 |
H02H3/08;H01H71/04;H01H73/14;H02H3/04 |
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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