An electronic device, and a magnetic energy harvesting device and method of harvesting magnetic energy, for electric metallurgical furnaces and similar environments. The device comprises a conductor which is configured to become induced with electricity in response to a time-varying magnetic field. The field may be irregular, such as near a metallurgical furnace or a similar environment. The electronic device may be a transmitter in a metallurgical electric furnace. The transmitter may be connected to an environment sensor. The electronic device may be powered by the magnetic energy harvesting device. The magnetic energy harvesting device may a wire loop or a coil. The method comprises inductively harvesting energy from magnetic field fluctuations caused by a metallurgical furnace or a similar environment to wirelessly power the electronic device.

An electronic device, and a magnetic energy harvesting device and method of harvesting magnetic energy, for electric metallurgical furnaces and similar environments. The device comprises a conductor which is configured to become induced with electricity in response to a time-varying magnetic field. The field may be irregular, such as near a metallurgical furnace or a similar environment. The electronic device may be a transmitter in a metallurgical electric furnace. The transmitter may be connected to an environment sensor. The electronic device may be powered by the magnetic energy harvesting device. The magnetic energy harvesting device may a wire loop or a coil. The method comprises inductively harvesting energy from magnetic field fluctuations caused by a metallurgical furnace or a similar environment to wirelessly power the electronic device.

A welding system performs communication accurately without provision of a control line between a welding power supply device and a wire feeding device. The welding system includes a welding power supply device, a wire feeding device, a welding torch, and power cables for supplying welding power from the welding power supply device to the welding torch. The system also includes power transfer lines for supplying power for driving a feeding motor disposed in the wire feeding device, so that the welding power supply device and the wire feeding device perform communication via the power transfer lines. The power transfer lines have less superimposed noise compared to the power cables. Accordingly, communication can be performed more accurately than in the case of performing communication via the power cables.

Power transmission system (1) for power transmission of electric power (P) from a power source (2A) to a power sink (4A) which is connected to the power source (2A) via a power transfer cable (3), wherein the power source (2A) has a first pole with a first electric potential, which is connected via parallel current lines of a first conducting pair of the power transfer cable (3) to a first pole of the power sink (4A), and a second pole with a second electric potential, which is connected via further parallel current lines of a second conducting pair of the power transfer cable (3) to a second pole of the power sink (4A), wherein, during the power transmission via the current lines, a user data signal can be transmitted between the power source (2A) and the power sink (4A) via at least one conducting pair with current lines of the same electric potential, uninfluenced by the power transmission.

A melting furnace is provided, that may contain a furnace shell, a furnace shell moving mechanism that supports the furnace shell so as to be movable on an installation surface, a pipe or a wiring that has one end fixed to the furnace shell and has at least partially, a flexible portion, and a stand. The stand may contain a supporting part that supports a halfway portion of the pipe or the wiring, and a stand moving part that is coupled to the supporting part and moves the supporting part on an installation surface in synchronization with movement of the furnace shell, in which the stand is mounted on the installation surface so as to be movable up and down with respect to the furnace shell.

A power controller includes an input power terminal, an output power terminal, a power switching circuit connected between the input power terminal and the output power terminal, a detection circuit connected to the power switching circuit, one or more data interfaces, and a control device connected to the detection circuit and the one or more data interfaces. The detection circuit measures a load current and a current squared time (I.sup.2t) value between the input power terminal and the output power terminal. The control device automatically turns the power switching circuit OFF whenever the load current exceeds a first value or the current squared time value exceeds a second value or an OFF signal is received from the one or more data interfaces, and automatically turns the power switching circuit ON whenever an ON signal is received from the one or more data interfaces.

The present application provides a power transmission vehicle device, including a vehicle body, an electrode clamping mechanism and an aluminum row clamping mechanism, wherein the electrode clamping mechanism and the aluminum row clamping mechanism are both provided on the vehicle body, the aluminum row clamping mechanism is used for clamping a power transmission aluminum row, and the aluminum row clamping mechanism is connected to the electrode clamping mechanism via a connecting cable; the electrode clamping mechanism comprises a strut and an electrode clamping assembly arranged on the strut. According to the present application, when an electrode clamping assembly clamps a conductive electrode, a corresponding operation can be performed according to a deformation change of the conductive electrode, thereby satisfying the effect of a stable clamping of the conductive electrode by an electrode clamping mechanism.

The present application provides a power transmission vehicle device, including a vehicle body, an electrode clamping mechanism and an aluminum row clamping mechanism, wherein the electrode clamping mechanism and the aluminum row clamping mechanism are both provided on the vehicle body, the aluminum row clamping mechanism is used for clamping a power transmission aluminum row, and the aluminum row clamping mechanism is connected to the electrode clamping mechanism via a connecting cable; the electrode clamping mechanism comprises a strut and an electrode clamping assembly arranged on the strut. According to the present application, when an electrode clamping assembly clamps a conductive electrode, a corresponding operation can be performed according to a deformation change of the conductive electrode, thereby satisfying the effect of a stable clamping of the conductive electrode by an electrode clamping mechanism.