A current measurement apparatus configured to quickly block current. The current measurement apparatus includes a first terminal, a second terminal, a resistor interposed in a separated space between the first terminal and the second terminal; a circuit board, a control unit mounted on the circuit board and configured to measure a current flowing in the resistor by using a voltage value between the first terminal and the second terminal and a resistance value of the resistor, and a cutting unit located above or below the resistor and configured to cut the resistor according to a control signal of the control unit.

An assembly for connecting to a high-voltage grid includes a plurality of single-phase transformers, each of which has a transformer tank that is filled with a fluid and is equipped with a core with at least one coil. The coils of the single-phase transformers are at least partly connected together, thereby forming a neutral or star point. In order to permit the assembly to be quickly assembled in situ while at the same time providing a reliable current path for compensation and grounding currents, the coils are connected together by a neutral or star point conductor or rail in order to form the neutral or star point. The neutral or star point conductor or rail is retained in an insulated manner on the transformer tank.

An assembly for connecting to a high-voltage grid includes a plurality of single-phase transformers, each of which has a transformer tank that is filled with a fluid and is equipped with a core with at least one coil. The coils of the single-phase transformers are at least partly connected together, thereby forming a neutral or star point. In order to permit the assembly to be quickly assembled in situ while at the same time providing a reliable current path for compensation and grounding currents, the coils are connected together by a neutral or star point conductor or rail in order to form the neutral or star point. The neutral or star point conductor or rail is retained in an insulated manner on the transformer tank.

An over-energy protection circuit, a residual current device, an electronic device, and a power distribution box. The protection circuit has relatively high operating reliability, and includes: a first over-energy absorption circuit, a second over-energy absorption circuit, and a residual current determining circuit. The first over-energy absorption circuit receives a first electrical signal output from a current transformer; and when a voltage value of the first electrical signal is greater than or equal to a first preset threshold, performs step-down processing on the first electrical signal to obtain a second electrical signal, and outputs the second electrical signal to the second over-energy absorption circuit; or when a voltage value of the first electrical signal is less than a first preset threshold, outputs the first electrical signal to the second over-energy absorption circuit.

A protection device protects an AC device, in particular an inductive voltage converter, electrically connected to an AC line, from damage caused by direct currents flowing in the AC line. In this case, at least one current transfer coil, which runs around a magnetic core section of a magnetic core, is connected to the AC line in parallel with the AC device.

A protection device protects an AC device, in particular an inductive voltage converter, electrically connected to an AC line, from damage caused by direct currents flowing in the AC line. In this case, at least one current transfer coil, which runs around a magnetic core section of a magnetic core, is connected to the AC line in parallel with the AC device.

A test object includes a first semiconductor element, a first main electrode electrically connected to a positive electrode of the first semiconductor element, a second main electrode electrically connected to a negative electrode of the first semiconductor element, and a first capacitor connected between the first main electrode and the second main electrode. A semiconductor testing device comprises a DC power supply connected between a first probe and a second probe, and a controller. When the first probe is connected to the first main electrode and the second probe is connected to the second main electrode, the controller charges the first capacitor with a DC voltage supplied from a DC power supply, and inputs, to a control electrode of the first semiconductor element, a control signal for turning on the first semiconductor element, after charging the first capacitor.

A test object includes a first semiconductor element, a first main electrode electrically connected to a positive electrode of the first semiconductor element, a second main electrode electrically connected to a negative electrode of the first semiconductor element, and a first capacitor connected between the first main electrode and the second main electrode. A semiconductor testing device comprises a DC power supply connected between a first probe and a second probe, and a controller. When the first probe is connected to the first main electrode and the second probe is connected to the second main electrode, the controller charges the first capacitor with a DC voltage supplied from a DC power supply, and inputs, to a control electrode of the first semiconductor element, a control signal for turning on the first semiconductor element, after charging the first capacitor.

A computer-implemented method and system is provided. The system adaptively switches prediction strategies to optimize time-variant energy demand and consumption of built environments associated with renewable energy sources. The system analyzes a first, second, third, fourth and a fifth set of statistical data. The system derives of a set of prediction strategies for controlled and directional execution of analysis and evaluation of a set of predictions for optimum usage and operation of the plurality of energy consuming devices. The system monitors a set of factors corresponding to the set of prediction strategies and switches a prediction strategy from the set of derived prediction strategies. The system predicts a set of predictions for identification of a potential future time-variant energy demand and consumption and predicts a set of predictions. The system manipulates an operational state of the plurality of energy consuming devices and the plurality of energy storage and supply means.

A computer-implemented method and system is provided. The system adaptively switches prediction strategies to optimize time-variant energy demand and consumption of built environments associated with renewable energy sources. The system analyzes a first, second, third, fourth and a fifth set of statistical data. The system derives of a set of prediction strategies for controlled and directional execution of analysis and evaluation of a set of predictions for optimum usage and operation of the plurality of energy consuming devices. The system monitors a set of factors corresponding to the set of prediction strategies and switches a prediction strategy from the set of derived prediction strategies. The system predicts a set of predictions for identification of a potential future time-variant energy demand and consumption and predicts a set of predictions. The system manipulates an operational state of the plurality of energy consuming devices and the plurality of energy storage and supply means.