A cable lead-through assembly (2) includes s frame (10) delimiting a cable reception space (20); and an in-frame sub-system (11) configured for securing cables (1) to the frame (10). The in-frame sub-system (11) includes at least two plates (32) intended for extending in said cable reception space (20), the plates (32) being configured for being coupled to the frame (10) and for forming between each other at least one cable's path for at least one cable (1); securing means (14) configured for securing the or each cable (1) to a corresponding plate (32); and a locking unit (16) coupled to the frame (10). The locking unit (16) has an at-rest configuration and an operational configuration. The locking unit (16) is configured for displacing the plates (32).

Sealing device for feeding through at least one filament, the sealing device comprising a housing, having a seal block compartment bounded by a front wall, a back wall, and side walls. The front wall and the back wall each include several correspondingly aligned slots having an open end at an open top face of the seal block compartment. The sealing device additionally comprising a seal block arranged in the seal block compartment. The seal block includes slits being open sided towards the open sided top face of the seal block compartment, each slit being aligned with the correspondingly aligned slots in the front and back walls, so that one can feed through a filament by sliding an intermediate part of the filament from the open end into the slit and the corresponding slots of the front and back wall.

A distributed energy resources compartment for an electrical panel is pre-wired for installation of a photovoltaic system for a residence. The compartment is mounted on a back plate in the interior of an electrical cabinet. A pre-wired connection within the compartment is configured to connect to a solar circuit breaker within the electrical cabinet, connected as a back-feed circuit breaker to an electrical panel. An opening on a backside of the compartment adjacent to the back plate of the electrical cabinet, is configured to receive connections within the compartment from a solar inverter, through the back plate of the electrical cabinet when the solar inverter is mounted to the back plate of the electrical cabinet.

A hydraulic fracturing system for fracturing a subterranean formation includes a primary switchgear arranged on a support structure. The system also includes a secondary switchgear, arranged on the support structure, the secondary switchgear positioned separately from the primary switchgear and within an enclosure, the secondary switchgear receiving an electrical input from the primary switchgear and including an plurality of feed connections for supplying electrical power to a plurality of fracturing equipment.

A cable sealing assembly for a cable entry in a cabinet housing electronic equipment. The cable sealing assembly comprises a tongue-shaped protruding member, an elastic cable sealing member configured to be shaped around the edge of the tongue-shaped protruding member and a corresponding recessed member configured to receive the protruding member and the cable sealing member in between. The elastic cable sealing member has a plurality of through holes forming a single row, each hole configured to have a cable extending there through. The cable sealing assembly is configured to seal the cable entry when the protruding member and the recessed member together apply an even pressure on the cable sealing member.

A connector for combining cabinets includes a flexible connector which is deformable and is configured to communicate inner cavities of a first cabinet machine and a second cabinet machine. The flexible connector includes a hollow cavity for an electrical connector to pass through, and the hollow cavity forms a first open end and a second open end at two ends of the flexible connector. The first open end is sealingly connected to a side plate of the first cabinet machine, the second open end is sealingly connected to a side plate of the second cabinet machine, and the first cabinet machine and the second cabinet machine are two adjacent cabinet machines. The structure of the connector for combining cabinets is simple and the mounting is convenient, and the flexible connector can automatically adapt to the mounting position through its own deformation so as to meet the normal mounting requirements.

A distributed energy resources compartment for an electrical panel is pre-wired for installation of a photovoltaic system for a residence. The compartment is mounted on a back plate in the interior of an electrical cabinet. A pre-wired connection within the compartment is configured to connect to a solar circuit breaker within the electrical cabinet, connected as a back-feed circuit breaker to an electrical panel. An opening on a backside of the compartment adjacent to the back plate of the electrical cabinet, is configured to receive connections within the compartment from a solar inverter, through the back plate of the electrical cabinet when the solar inverter is mounted to the back plate of the electrical cabinet.

In accordance with 37 C.F.R. § 1.121(b)(2)(i), please replace the abstract of the specification as filed with the following paragraph:

A method of making an electrically conductive and weatherproof enclosure includes mixing and melting an electrically conductive material, a latex rubber material, and a polycarbonate material to produce a weatherproof material mixture, blending carbon black with polyethylene to produce an electrically conductive additive, positioning an injection mold of the enclosure in fluid communication with an exit end of a heating barrel, injecting the weatherproof material mixture into an entry end of the heating barrel, introducing the electrically conductive additive through a lateral port of the heating barrel proximate to the exit end to partially mix with the weatherproof material mixture to produce an injection mixture, and injecting the injection mixture into the injection mold to produce the electrically conductive and weatherproof enclosure.

A rack for storing electrical equipment includes a columnar frame formed by combining a vertical frame and a horizontal frame and a connecting member attached to the horizontal frame. The horizontal frame has a first portion including the connecting member and a second portion other than the first portion. The connecting member is movably attached to the second portion so that an inside of the rack is opened in the first portion.

Sealing device for feeding through at least one filament, the sealing device comprising a housing, having a seal block compartment bounded by a front wall, a back wall, and side walls. The front wall and the back wall each include several correspondingly aligned slots having an open end at an open top face of the seal block compartment. The sealing device additionally comprising a seal block arranged in the seal block compartment. The seal block includes slits being open sided towards the open sided top face of the seal block compartment, each slit being aligned with the correspondingly aligned slots in the front and back walls, so that one can feed through a filament by sliding an intermediate part of the filament from the open end into the slit and the corresponding slots of the front and back wall.