A circuit for supplying electrical power (20) at a rated direct current of between 20 kA and 100 kA to an electrolysis cell (21) comprising an upstream busbar (25), a downstream busbar (26), the two upstream (25) and downstream (26) busbars being connected to each other by means of a short-circuiting device (22) which, when closed under the action of an actuating mechanism (229), allows the two busbars to be electrically connected to each other in order to cut off the electrical power supply to the cell (21), an anode bar (213) equipped with an anode connection interface (215) for connection to the anode (211) of the cell, and a cathode connection interface (214) for connection to the cathode (212) of the cell. According to the main features of the invention, the cathode connection interface is connected to the downstream busbar by means of a flexible electrical connector (27), the circuit comprises means for absorbing the movement of the various constituent elements of the circuit due to thermal expansion and a disconnector (23) connected, on the one hand, to the upstream busbar (25) and, on the other hand, to the anode bar (213), the disconnector is opened by an actuating mechanism (239) and electrically disconnects the upstream busbar and the anode bar from each other after a non-zero time interval Tm when the short-circuiting device has been closed, the time interval Tm corresponding to the time of establishment of the rated current in the short-circuiting device (22).

A multiphase switchgear includes a switch panel, a vertical input housing module and a vertical switch housing module. The switch housing module and the input housing module are spaced apart from one another by a transverse housing module. The input housing module, the transverse housing module and the switch housing module form a first phase block. A plurality of phase blocks are located flush one behind the other in the direction of the transverse housing.

A multiphase switchgear includes a switch panel, a vertical input housing module and a vertical switch housing module. The switch housing module and the input housing module are spaced apart from one another by a transverse housing module. The input housing module, the transverse housing module and the switch housing module form a first phase block. A plurality of phase blocks are located flush one behind the other in the direction of the transverse housing.

A method for controlling a wind farm, which is operated by means of a wind farm control unit and comprises a multiplicity of wind power installations having wind power installation controllers and being connected to one another via a common wind farm grid, which is connected to an electrical power supply grid of a grid operator by means of a wind farm transformer, comprising the following steps: reception of at least one fault bit at the wind farm control unit, in particular at least one fault bit of the grid operator, deactivation of all external setpoint value specifications at the wind farm control unit apart from those of the grid operator after reception of the fault bit, activation of a closed-loop fault case control implemented in the wind farm control unit after successful deactivation of all external setpoint value specifications apart from those of the grid operator.

Electrical power distribution devices with a bypass unit that electrically engages one of two alternate units for powering a load while electrically isolating the other using a six pole power transfer switch and mechanical and electrical interlocks to allow a technician to access one of the alternate units when de-energized and in position while the other of the alternate units is energized and powering the load.

Electrical power distribution devices with a bypass unit that electrically engages one of two alternate units for powering a load while electrically isolating the other using a six pole power transfer switch and mechanical and electrical interlocks to allow a technician to access one of the alternate units when de-energized and in position while the other of the alternate units is energized and powering the load.

A jumper bus bar may include a frame and a terminal assembly. The frame is to be seated along a surface of a housing of an electrical box. The terminal assembly features a first fork terminal perpendicular to the frame and a second fork terminal perpendicular to the frame. The first fork terminal is adjacent the second fork terminal. The terminal assembly also includes a slot to receive a terminal of a fuse or relay, the slot being coplanar with the frame.

A jumper bus bar may include a frame and a terminal assembly. The frame is to be seated along a surface of a housing of an electrical box. The terminal assembly features a first fork terminal perpendicular to the frame and a second fork terminal perpendicular to the frame. The first fork terminal is adjacent the second fork terminal. The terminal assembly also includes a slot to receive a terminal of a fuse or relay, the slot being coplanar with the frame.

A bus bar connecting device having a first bushing which has a first protruding part projecting to the outside of the first pressure vessel 4 and a first connection part, a second bushing which has a second protruding part projecting to the outside of the second pressure vessel and a second connection part, a connecting conductor part that electrically connects the first connection part and the second connection part, and an intermediate tank having a hand hole and a lid for sealing, wherein the intermediate tank stores the first protruding part and the second protruding part in an own internal space so as to seal the stored parts, thereby the bus bar connecting device that has good switchgear assembly and can improve a line unit workability is provided.

A bus bar connecting device having a first bushing which has a first protruding part projecting to the outside of the first pressure vessel 4 and a first connection part, a second bushing which has a second protruding part projecting to the outside of the second pressure vessel and a second connection part, a connecting conductor part that electrically connects the first connection part and the second connection part, and an intermediate tank having a hand hole and a lid for sealing, wherein the intermediate tank stores the first protruding part and the second protruding part in an own internal space so as to seal the stored parts, thereby the bus bar connecting device that has good switchgear assembly and can improve a line unit workability is provided.