| 摘要 |
<p>The invention relates to a device for detecting current tapped illicitly from a mains electricity supply, which device comprises: detecting means for detecting a difference between a first current through a first core respectively the sum of the first currents through a number of first cores and the second current through a second core respectively the sum of the second currents through a number of second cores, which first current respectively the sum of which first currents is the same under normal operating conditions as the second current respectively the sum of the second currents, which cores form part of a power consumption circuit which forms part of or is connected to a branch cable, in which circuit a supply meter is incorporated which registers the amount of consumed electrical energy; and switching means for generating a detection signal under the control of the detecting means when a certain difference between said currents is detected, which signal controls the coil of a relay, which relay comprises a switch contact which is arranged in one of said cores such that the switch contact is opened and the current flow is interrupted.</p> |
