Overload protection circuit for consumer - uses relay as threshold switch, to control timing circuit
申请公布号:FR2326064(A1)
申请号:FR19760028837
申请日期:1976.09.24
申请公布日期:1977.04.22
发明人:PATRICE MACQUAIRE
分类号:H02H3/033;H02H3/06;(IPC1-7):02H3/08
主分类号:H02H3/033
摘要:<p>The overload protection circuit prevents a load consuming more than the power permitted by the electricity supply authorities, to avoid the fire associated with such an excess. A transformer is connected between the mains supply and a relay. The relay acts as a trigger and controls a time circuit supplied from the mains. A second contact (7) of the relay switches off secondary loads. The time circuit comprises a capacitor (13), a threshold switch (17), a diode (15) and a resistor (16). The capacitor is connected over the second contact to the phase line and over the diode and resistor to the neutral line.</p>
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