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ELECTRICAL ENERGY METER AND METHOD FOR DETECTING THE STATE OF A CIRCUIT BREAKER OF AN APPARATUS CONNECTED TO SAID METER
ELECTRICAL ENERGY METER AND METHOD FOR DETECTING THE STATE OF A CIRCUIT BREAKER OF AN APPARATUS CONNECTED TO SAID METER
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机译:电能表和用于检测与所述电能表相连的设备的断路器的状态的方法
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摘要
The invention relates to an electrical energy meter (1) comprising a measurement stage (2) having a phase current sensor (9) connected in series to a cutoff relay (13), two serial measurement impedance components (Z, R) connected in parallel to the sensor (9) and to the relay (13), a measurement means (14) for measuring the electrical potential between the measurement impedance components (Z, R), and an additional power source (Vadd) connected in series to the measurement impedance components (Z, R). The invention further relates to a method for detecting a state of a circuit breaker of an apparatus connected to such a meter.
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