504results about "Earthing arrangements" patented technology

Disclosed is a switchgear cabinet with a magnetic blow-out load switch, comprising a cabinet body, wherein a cable compartment, a mechanism compartment, a sealed gas compartment, and a fuse compartment are arranged within the cabinet body. A three-phase top insulating sleeve is arranged at the top of the sealed gas compartment, a three-phase bottom insulating sleeve is arranged at the bottom of the fuse compartment, and the three-phase bottom insulating sleeve penetrates into the cable compartment to connect to an incoming cable and an outgoing cable. A three-phase magnetic blow-out load switch is installed within the sealed gas compartment, and an operating mechanism for the load switch is installed at an upper part within the mechanism compartment and located on an outer side of a front panel of the sealed gas compartment. A three-phase fuse is arranged within the fuse compartment, a fuse striker-pin tripping mechanism is installed at a bottom part within the mechanism compartment, and a small fuse grounding switch is further installed within the fuse compartment. The present invention uses a magnetic blow-out arc extinguishing assembly to increase a strong magnetic field to directionally guide and concentrate electrons and ions of an electric arc, and performs rapid arc interruption and arc extinguishing by means of an arc extinguishing apparatus, effectively improving the arc extinguishing capacity of the load switch, and solving the technical problem of load switches in high-voltage load switch cabinets having low arc extinguishing capacity.

The utility model discloses a liquid cooling energy storage cabinet, which sequentially comprises a base, a control layer, a refrigeration layer and a battery layer from bottom to top, the control layer, the refrigeration layer and the battery layer are integrated in a cabinet body, a control module is arranged in the control layer, the control module is connected with the refrigeration layer and the battery layer through wires, and the control module is connected with the refrigeration layer and the battery layer through wires. A liquid cooling battery pack is arranged in the battery layer, a liquid cooling unit is arranged in the refrigerating layer, and the liquid cooling unit is connected with the liquid cooling battery pack through a liquid cooling pipeline. According to the liquid cooling energy storage cabinet, the control layer, the refrigeration layer and the battery layer are integrated in the cabinet body and are arranged on the base, the alternating current and direct current integrated structural design that the control layer, the refrigeration layer and the battery layer are stacked up and down is adopted, the structure is compact, compared with a traditional split cabinet, the weight and size are greatly reduced, the occupied area is small, the space utilization rate is high, and the machining cost is reduced; manual installation workload is reduced, the size is reduced, the field installation number is increased, the size is smaller, and transportation is convenient.

The invention belongs to the technical field of battery equipment, and particularly relates to a shell structure of a high-voltage box, the high-voltage box, a battery and electric equipment. The housing structure comprises an insulating housing, which is provided with an inner cavity used for installing an electrical device, and is provided with an assembling side wall; the connector is installed on the outer side, away from the inner cavity, of the assembling side wall, the connector is provided with a connecting terminal and a shielding layer, the shielding layer surrounds the connecting terminal, and the connecting terminal penetrates into the inner cavity and is used for being electrically connected with an electrical device; the metal plate is installed on the outer side, away from the inner cavity, of the assembling side wall, the metal plate is located between the connector and the assembling side wall, an assembling through hole is formed in the metal plate, and the connecting terminal penetrates through the assembling through hole and the shielding layer to be electrically connected with the metal plate; and the first end of the grounding part is electrically connected with the metal plate, and the second end of the grounding part is used for grounding. By applying the technical scheme, the problem of low assembly efficiency of the high-voltage box caused by the complex overall design structure of the high-voltage box in the related technology is solved.

The utility model provides an insulation grounding device for power substation construction, which belongs to the technical field of substation grounding construction and comprises an insulation cylinder, a ground cone is fixedly connected to the bottom of the insulation cylinder, a grounding column is embedded in an inner cavity of the ground cone, and connecting columns moving oppositely are symmetrically arranged in the inner cavity of the insulation cylinder. The inner cavity of the insulating cylinder is provided with an opposite linkage assembly for driving the two connecting columns to be in butt joint with the conductive disc and the grounding column respectively, and the two connecting columns are in butt joint with the conductive disc and the grounding column respectively, so that the electric wire is grounded, current is led to the ground through the electric wire, and safe grounding of electrical equipment under normal and fault conditions is ensured; according to the utility model, the device is simple in structure and convenient to carry, prevents electric shock danger during equipment electric leakage, can be directly installed at a corresponding position through the ground cone during construction, forms an integrated structure with the ground cone, brings convenience to the construction process, and further guarantees the efficiency of the construction process of the transformer substation.

The utility model discloses an outdoor photovoltaic low-voltage cabinet, which comprises a cabinet body, the lower end of the cabinet body is arranged on a base, the upper end of the cabinet body is provided with a top cover, the top cover comprises a top flat plate and a mask plate, the top flat plate is provided with a mounting port, an exhaust fan is arranged in the mounting port, the upper end of the base is covered with a bottom plate, and a plurality of upright posts are arranged on the periphery of the mask plate. The upper ends of the stand columns are provided with bells respectively, the middle of the protruding line is fixedly connected with a center shaft, the center shaft is rotatably sleeved with a rotating pipe, the rotating pipe is driven by a working shaft of the exhaust fan to rotate, the rotating pipe is fixedly connected with a swing rod, the lower end of the center shaft is grounded through a grounding wire, and the center shaft is made of conductive materials. The outdoor photovoltaic low-voltage cabinet provided by the utility model has the advantages of good heat dissipation effect, wild animal influence prevention, lightning protection and flood lamp prevention. All the functions are matched with one another, and energy consumption is low. And the device is suitable for being installed and used outdoors, especially used in a large-scale photovoltaic power station, and can adapt to various different outdoor environments.

The present application provides a switch cabinet, comprising: a cabinet body (10), comprising a main body (11) and a test door (12), wherein a first stop portion (121) is provided on the test door (12); a switch device (20); and a first interlocking assembly, comprising an operation structure (40), a second stop portion (50), and a first lifting / lowering structure (60), wherein at least part of the operation structure (40) is arranged in a liftable and lowerable mode to drive the first lifting / lowering structure (60) to lift / lower, and the first lifting / lowering structure (60) shields or provides clearance for a grounding operation hole (24) of the switch device (20); a fitting portion (61) of the first lifting / lowering structure (60) has a fitted state and a separated state; when the test door (12) is closed, the operation structure (40) is operated to drive the first lifting / lowering structure (60) to lower until the fitting portion (61) moves from the separated state to the fitted state, and the first lifting / lowering structure (60) provides clearance for the grounding operation hole (24), so that when the switch device (20) is grounded, the test door (12) cannot be opened.

The invention relates to the technical field of electrical equipment, in particular to a switch cabinet and an interlocking device thereof.The switch cabinet comprises a cabinet body, a partition plate is fixedly connected to the inner middle of the cabinet body, a master controller is arranged in the middle of the upper end of the partition plate, and a switch component general assembly body is arranged at the inner bottom of the cabinet body; the main controller is used for controlling the switch component general assembly body to perform opening and closing operation, the partition plate is used for isolating the main controller from the switch component general assembly body, one side of the front end face of the cabinet body is rotationally connected with a main cabinet door through a rotating shaft, the main cabinet door is further rotationally connected with an auxiliary cabinet door, and the auxiliary cabinet door is connected with the main cabinet door through a rotating shaft. And the auxiliary cabinet door is used for facilitating operation and maintenance personnel to operate the master controller. Compared with the prior art, the switch cabinet solves the problem that in the prior art, a switch component and a control part are not physically isolated in the switch cabinet, so that the risk of electric shock is likely to happen during maintenance.

The present application relates to the field of cable branch box, specifically relates to a kind of integrated cable branch box, including box, door body hinged on the box;Handle assembly for eliminating human body static electricity is provided on the door body;The beneficial effects of the present application are that: in actual use, personnel when opening door body, need to pull handle main body with hand, hand needs to contact pressure plate, i.e. hand and electrode contact, at this time human body-electrode-wire one-variable resistance component-ground electrode-ground forms communication, to carry out the static electricity of human body into ground, realize the purpose of human body static electricity removal;At the same time, due to the need to pull handle main body when opening door body, and the operation of pulling handle main body is human body static electricity removal operation, so it can prevent personnel from forgetting to carry out human body static electricity removal due to forget.

The invention relates to a construction method for a grounding down lead system of a new energy storage power station, which is based on the construction of a main grounding grid and is used for reasonably connecting a lightning rod, a framework, a lightning arrester bracket, a main transformer, a tubular bus, a GIS (Gas Insulated Switchgear) and a brim voltage-sharing belt in the energy storage power station with the main grounding grid so as to exert the function of protecting related electrical equipment in the energy storage power station. Comprising the following steps that S1, a lightning rod, a framework, a lightning arrester support, a main transformer, a tubular bus, a GIS and a brim voltage-sharing belt are connected to a main grounding grid; s2, providing centralized grounding devices, and respectively arranging the centralized grounding devices at positions adjacent to a lightning rod, a main transformer and a tubular bus; on the basis that related electrical equipment of the energy storage power station is connected to the main grounding grid, the centralized grounding device is arranged for the lightning rod, the main transformer and the tubular bus, so that the current dispersing area is increased, the grounding efficiency of a grounding down lead system of the energy storage power station is improved, the potential difference among multiple equipment of the energy storage power station is reduced, and point position balance of the whole station is ensured; and safe operation of electrical equipment is ensured.

The invention provides a sealing switch cabinet isolation circuit breaker grounding device, and belongs to the technical field of grounding devices, the sealing switch cabinet isolation circuit breaker grounding device comprises a switch cabinet, and an isolation circuit breaker grounding body, an interlocking mechanism, a circuit breaker operation mechanism and a grounding operation mechanism arranged in the switch cabinet, and also comprises a buffer arc extinguishing assembly and a protection cleaning assembly; blowing and sucking actions of the air bag during switching-on and switching-off are matched with cleaning actions of the cleaning block, the air bag blows out airflow to cut off an arc path during switching-on, and the cleaning block cleans in advance to reduce the possibility of arc generation. During opening, the air bag sucks air and is lengthened to extinguish the arc, the cleaning block cleans again to prevent the arc from reignition, the arc extinguishing capability is greatly improved, and the contact ablation and equipment damage risks are reduced; the buffering function of the arc-shaped block and the air bag and the buffering function of the base plate form a multi-stage buffering mechanism, and abrasion of the contact and equipment parts is reduced; the blowing and suction treatment of the air bag and the dual cleaning effect of the cleaning block enable the contact area of the contact to be cleaner, and the contact resistance is effectively reduced.

This application discloses an electrical cabinet and an energy storage system, relating to the field of power equipment technology. The electrical cabinet includes a cabinet, electrical modules, and a first fire-fighting device. The cabinet has a first chamber and a second chamber, separated by a first partition, which is a fire-resistant partition. The electrical modules are housed in the first chamber, and the first fire-fighting device is housed in the second chamber. The first fire-fighting device has at least one outlet for releasing fire extinguishing material to the outside of the cabinet. According to this application, by using the first partition to separate the first and second chambers, the safety performance of the electrical cabinet is improved, ensuring that a fire in the electrical modules will not affect the first fire-fighting device, allowing the first fire-fighting device to function normally, thus reducing losses caused by fires in the electrical modules.

The utility model relates to a grounding assembly of a power distribution cabinet, which comprises a spring, a cabinet door connecting plate, a cabinet body connecting plate and a grounding cable, the cabinet door connecting plate is arranged at one end of the spring, one end of the spring is connected to the inner wall of the cabinet door through the cabinet door connecting plate, and the cabinet body connecting plate is arranged at the other end of the spring. The other end of the spring is connected in the cabinet body through the cabinet body connecting plate, the grounding cable is arranged in the spring, one end of the grounding cable is connected with the cabinet door connecting plate, the other end of the grounding cable is connected with the cabinet body connecting plate, and the length of the grounding cable is larger than that of the spring. According to the utility model, the grounding cable is always kept in a connection state in the opening and closing process of the cabinet door, the problem that the grounding cable is damaged due to stretching or compression in a traditional grounding mode is avoided, the grounding reliability is improved, and meanwhile, the grounding cable is directly connected with the cabinet door and the cabinet body, so that the problem of poor contact is avoided.

The utility model relates to the technical field of construction site power distribution, in particular to a movable power distribution box platform deck which comprises a protection cage and a bottom plate, lifting lugs are arranged on the upper side of the protection cage, a wood plate pad is arranged on the upper side of the bottom plate, at least three sets of sliding seats are arranged on the lower side of the bottom plate, and sliding rails are arranged on the lower sides of the sliding seats. A batten is arranged on the lower side of the sliding rail, and stabilizing blocks are arranged at the two ends of the batten; the sliding seat comprises a guide rail seat, rollers and sliding pins, the multiple sets of sliding pins are evenly arranged on the upper side of the guide rail seat, groove walls matched with the sliding pins are arranged on the lower surface of the bottom plate, and the groove walls are perpendicular to the sliding rails; distribution boxes are installed in the protection cage in a centralized mode, the wood base plate is arranged at the bottom, the distribution boxes are convenient to fix, insulation is achieved, safety is guaranteed, in addition, the sliding seats are arranged and matched with the sliding pins to achieve longitudinal and transverse movement and small-range rapid adjustment, use convenience is improved, bottom wood beams can be rapidly laid and adjusted, and operation is convenient.

The utility model relates to the technical field of power equipment protection, in particular to an assembly type secondary distribution box protecting and fixing device. The device comprises a device main body which is composed of a frame and a supporting frame, the supporting frame comprises a supporting piece and supporting legs, a groove is formed in the supporting piece, a supporting plate for supporting the distribution box is arranged in the groove, a stable structure and supporting are provided, safety and stability of the secondary distribution box are ensured, meanwhile, waste of pouring of a concrete foundation is avoided, and the device is suitable for different terrains and is high in practicability. The frame is formed by overlapping a plurality of protection frames, the distribution box is comprehensively protected, and the safety and the maintenance efficiency are improved. The whole device adopts an assembly type design, and is convenient to mount, dismount, move and reutilize.

The present invention relates to the technical field of locks, and specifically to a low-voltage cabinet door lock protection structure, comprising a lock body and a key; the lock body comprises a lock core, a lock tongue and an identification switch of a normally closed switch, the lock core comprises a first conductive rotating shaft, a second conductive rotating shaft and an insulating sealing sleeve; one end of the first conductive rotating shaft is inserted into the sealing sleeve and is grounded, and the second conductive rotating shaft is inserted from the other end of the sealing sleeve; ER fluid is present between the first insertion part and the second insertion part; the key comprises a battery, a memory and a conductive connector, the memory is electrically connected to the battery and the conductive connector respectively, and the memory stores an activation electrical signal of the identification switch; the present invention forms a potential difference between the first conductive shaft and the second conductive shaft by disconnecting the battery in conjunction with the identification switch and the ER fluid is an insulator, and the potential difference forms an electric field. Under the action of the electric field, the ER fluid forms a connection between the first insertion part and the second insertion part, so that locking and unlocking can be achieved by twisting the identification part.

This invention relates to a switchgear, comprising: a cabinet; an external busbar connection structure disposed on the cabinet; a busbar located within the cabinet and electrically connected to the external busbar connection structure; a three-position switch disposed within the cabinet, having a grounding position, an isolation position, and a conducting position electrically connected to the busbar; the switchgear further comprising: a busbar grounding switch, including a grounding stationary contact and a grounding moving contact disposed within the cabinet; the grounding stationary contact is electrically connected to the busbar; the grounding moving contact is used for grounding connection and is driven by a corresponding drive mechanism to reciprocate, thereby connecting and disconnecting with the grounding stationary contact. When maintenance of the switchgear is required, the switch of the three-position switch is first rotated to the grounding position to de-energize the entire switchgear, and then the grounding moving contact of the busbar grounding switch is made conductive with the grounding stationary contact. At this time, the busbar is grounded to eliminate the charge carried in the busbar, ensuring the safety of maintenance personnel.

The invention relates to the technical field of micro-grids, in particular to a low-voltage micro-grid stabilization cabinet which comprises a box body, one end of the inner side wall of the box body is fixedly connected with a cabinet body, and one side wall of the box body is fixedly connected with a heat dissipation and insect repelling mechanism for dissipating heat of the cabinet body and repelling insects. According to the low-voltage micro-grid stabilization cabinet, the first motor drives the connecting rod mechanism to control the swing angle of the first cover plate and the second cover plate, the second motor drives the connecting rod mechanism to control the swing angle of the first cover plate and the second cover plate, so that the stability of the low-voltage micro-grid stabilization cabinet is improved, and the stability of the low-voltage micro-grid stabilization cabinet is improved. The opening degree of the heat dissipation opening can be adjusted in real time according to temperature data fed back by the detection mechanism, the heat dissipation efficiency is improved, meanwhile, protection performance reduction caused by full opening is avoided, and a first baffle is matched with an electric fence to form a protection barrier to kill contacted insects.

The utility model relates to the technical field of power distribution cabinet grounding, and discloses a low-voltage power distribution cabinet grounding device, which solves the problems in the background technology, and comprises a power distribution cabinet body, the power distribution cabinet body is provided with support legs, a fixed plate is arranged in the power distribution cabinet body, the fixed plate is provided with guide holes, and the guide holes are communicated with the support legs. A guide hole is formed in the bottom of the power distribution cabinet body, a grounding nail penetrates through the guide hole, a penetrating hole is formed in the bottom of the power distribution cabinet body, the penetrating hole corresponds to the grounding nail in position, a wiring terminal is arranged on the grounding nail, the grounding nail is rotatably connected with the wiring terminal, and the wiring terminal is connected with a wire in the power distribution cabinet body. A rotary motor is arranged on the grounding nail, the output end of the rotary motor penetrates through the wiring terminal to be connected with the grounding nail, and a sliding rail is arranged on the inner wall of the power distribution cabinet body. The power distribution cabinet has the effects that manual operation can be reduced, it is ensured that the insertion process is stable and efficient, loosening or displacement is prevented, and safety is improved.

The invention relates to the field of combined electric appliances, in particular to a double-bus GIS (gas insulated switchgear) extension structure with a reserved interval and a charged withstand voltage test method.The double-bus GIS extension structure with the reserved interval comprises a first bus, a second bus and early-stage equipment arranged on the first bus and the second bus, and the first bus and the second bus are provided with bus interfaces to be extended; the earlier-stage equipment comprises an earlier-stage line I, an earlier-stage line II, a bus coupler, a bus bar I PT, a bus bar II PT, an earlier-stage main transformer I and an earlier-stage main transformer II; the system further comprises extension equipment, and the extension equipment comprises a first extension bus and a second extension bus which are connected with the first bus and the second bus respectively, and an extension line, a reserved interval and an extension main transformer which are arranged on the first extension bus and the second extension bus. Power failure of the whole station is not needed, the consequence that early-stage equipment cannot operate is avoided, the cost is saved, and the flexibility of normal power supply is improved.

The invention provides an anti-electric-shock and dustproof low-voltage branch box, and relates to the technical field of low-voltage power distribution equipment, the anti-electric-shock and dustproof low-voltage branch box comprises a box body, a box door and a box cover, the box body comprises an outer-layer insulation shell, an inner-layer insulation shell and an interlayer, and the interior of the box body is divided into a branch box main body cavity, an electrical isolation cavity, a heat dissipation and dust removal channel and an independent wire duct cavity; a wiring terminal set, an insulation positioning frame, an adjustable supporting column, an electric leakage detection module and a grounding terminal are fixed in the branch box body cavity, a power controller and an airflow dustproof assembly are arranged in the electrical isolation cavity, the upper end and the lower end of the heat dissipation and dust removal channel correspond to the airflow dustproof assembly and the diversion opening and closing mechanism, and the box door is provided with an electromagnetic lock and a wire groove plugging plate. The beneficial effects of the invention are that the double-layer insulation structure is combined with the electric leakage detection module to realize linkage of electric leakage, power failure and door locking, so that the anti-electric shock safety is improved; through the sealing design of the active airflow barrier and the multi-stage filter screen, the synergistic interaction of dust prevention and heat dissipation is realized, the maintenance cost is reduced by a modularized convenient structure, and the reliability and the practicability are greatly improved.

The utility model discloses a current transformer track installation structure and a switch cabinet, the current transformer track installation structure comprises a first adapter plate which is horizontally arranged in the switch cabinet and a second adapter plate which is fixed above a current transformer, two sides of the first adapter plate are fixedly provided with first side plates, and the outer sides of the first side plates are fixedly provided with first guide slide plates which are horizontally arranged; second side plates are fixed to the two sides of the second adapter plate, and second guide sliding plates matched with the first guide sliding plates are fixed to the inner sides of the second side plates. A first limiting connecting plate is fixed at the front end of the first adapter plate, and a second limiting connecting plate is fixed at the front end of the second adapter plate; limiting kidney-shaped holes are formed in the two sides of the second limiting connecting plate, the first limiting connecting plate is rotationally connected with a connecting rod, and the connecting rod is connected with limiting plates matched with the limiting kidney-shaped holes. Rapid sliding installation of the current transformer is achieved through the sliding plate, and rapid fixing and dismounting of the current transformer are facilitated through the structure of the limiting plate and the limiting hole.

The utility model provides a 10 kv closed type high-voltage contactor cabinet structure, a high-voltage cabinet comprises a lower cabinet body, an upper instrument cabinet and a middle wiring cabinet, a contactor comprises a handcart type contactor seat, contact boxes and a fusible core, the handcart type contactor seat is arranged at the front side of the middle wiring cabinet, two groups of contact boxes are arranged at the inner side of the handcart type contactor seat in an up-and-down parallel manner, and the fusible core is arranged at the front side of the middle wiring cabinet. The upper end of the handcart type contactor seat is connected with the interior of the upper instrument cabinet through the terminal support, the contact box is connected with the electric wave mutual inductor and the plug sleeve through the connecting bus, the lower portion of the electric wave mutual inductor is provided with the grounding bus, and the lower end of the grounding bus is arranged in the lower cabinet body. The handcart-type contactor is simple in structure and good in corrosion resistance, modularization arrangement is adopted, standardization, serialization and modularization of the device are achieved, the handcart-type contactor can be conveniently replaced according to the actual operation condition and operation area of the high-voltage cabinet, and capacity expansion by a user is facilitated.

The utility model discloses a non-partial-discharge variable-frequency power supply device, which relates to the technical field of variable-frequency power supplies and comprises a power supply cabinet body, radiating screens are symmetrically arranged on two sides in the power supply cabinet body, radiating baffles are arranged outside the radiating screens, and a cabinet door is arranged at the upper end of the middle of the front of the power supply cabinet body. The front middle lower end of the power supply cabinet body is provided with an input end wiring cavity, and the rear middle lower end of the power supply cabinet body is provided with an output end wiring cavity. The cleaning assembly is arranged, the forward and reverse rotation motor is started, the forward and reverse rotation motor drives the threaded rod to rotate, the lead screw block moves up and down along with rotation of the threaded rod, the cleaning plate and the cleaning brush are driven to move up and down along with vertical movement of the lead screw block, and dust accumulated on the heat dissipation net plate is cleaned; through the arrangement of the output end wiring cavity, the isolation power supply output jack outputs a 220V isolation power supply, the synchronous power supply output jack provides a 50V / 100W synchronous power supply, and the optical fiber communication connection port is connected with an optical fiber port of a remote control box.

A gas-insulated switchgear (1) is provided, comprising: a disconnector (5) with a grounding switch and a circuit breaker (6) housed in a tank (2); and a power supply terminal (9) provided outside the tank (2), connected to the disconnector (5) with a grounding switch so as to ground the disconnector (5) with a grounding switch. One end of the circuit breaker (6) is electrically connected to a cable (8) outside the tank (2). The gas-insulated switchgear (1) has a grounding rod (10) with one end serving as a rotation axis and inserted horizontally into the power supply terminal (9). The power supply terminal (9) is grounded via a grounding conductor (11) connected to one side of the rotation axis. During a withstand voltage test of the cable (8), a test terminal (31) is connected to the power supply terminal (9), and a predetermined voltage is supplied from a test power supply (32).

The utility model discloses a lightning protection mechanism of a power distribution cabinet for power transmission, and belongs to the technical field of power transmission equipment. The device mainly comprises a synchronous driving unit, the synchronous driving unit is installed at the top of the power distribution cabinet and drives a retracting and releasing unit to rotate at the top of the power distribution cabinet, the retracting and releasing unit comprises a worm, a worm gear and a rotating rod, the worm is in meshed connection with the side wall of the worm gear, and the rotating rod is in key connection with the interior of the worm gear. One end of each rotating rod is rotationally connected to the inner side wall of the power distribution cabinet through a bearing seat, the other end of each rotating rod is fixedly provided with a lightning protection unit, and the synchronous driving unit is matched with the retracting and releasing unit, so that flexible retracting and releasing of the lightning protection units are achieved. In no thunder and lightning weather, the lightning protection unit can be recycled into the power distribution cabinet, external environment erosion is reduced, and the service life of the lightning rod, the insulating base and other components is prolonged.

The invention relates to a mounting element (1) for the internal assembly of a control cabinet housing (100), wherein the mounting element (1) has a mounting rail (2) which has a clamping element (3) at a first of its opposite longitudinal ends (7) and a support element (4) at the second longitudinal end (8), characterized in that the clamping element (3) is adjustable in the longitudinal direction (x) of the mounting rail (2) with respect to the mounting rail (2) by means of a drive (5) acting between the mounting rail (2) and the clamping element (3). A corresponding arrangement is further described.

The invention discloses a power cabinet grounding device with a locking anti-falling structure, and relates to the technical field of power cabinet grounding. An L-shaped fixing frame is mounted on the side wall of the power cabinet through bolts; a connecting assembly is mounted on a transverse plate of the L-shaped fixing frame; the connecting assembly and the grounding block are installed through the locking anti-falling structure. The locking anti-falling structure is mounted in the connecting assembly; the connecting assembly comprises a fixing sleeve; the top of the fixing sleeve and the L-shaped fixing frame are fixedly installed. A first cavity and a movable cavity are formed in the fixed sleeve; one end of the grounding block is aligned with the conical column to be pushed upwards, the bottoms of the two hook frames installed on the ear plate of the movable block are opened towards the two sides, the grounding block can slide in conveniently, after the grounding block is attached to the bottom of the movable block, the barbs at the bottoms of the hook frames are located in the two clamping grooves inserted into the bottom of the grounding block, and the reset effect is achieved under the action of the rotating shaft and the torsion spring. The inclined surfaces of the hook frames are matched with the inclined edges, so that the two hook frames are prevented from automatically opening towards two sides, and the effect of the grounding block anti-falling structure is realized.

This invention relates to a dedicated branch box for AC charging piles and its power supply control method. The box includes a housing, a main power supply circuit within the box, a branch distribution circuit electrically connected to the main power supply circuit, and multiple outgoing line units. The main power supply circuit includes a horizontal main busbar arranged horizontally within the box, an incoming line interface at one end of the horizontal main busbar, an expansion interface at the opposite end, and a main disconnect switch between the incoming line interface and the horizontal main busbar. The incoming line interface and the expansion interface are fixedly connected to the horizontal main busbar, and the expansion interface is used to connect to the main power supply circuit of another branch box of the same type via a cable. The branch distribution circuit is located on one side of the horizontal main busbar and electrically connected to it. Multiple outgoing line units are spaced apart along the length of the branch distribution circuit. Each outgoing line unit includes a circuit breaker installed on the branch distribution circuit and an outgoing line interface electrically connected to the circuit breaker. The outgoing line interface is located at the bottom of the box. This invention improves power distribution safety.

A terminal (14) for electrically connecting conductors (20) to an equipotential bonding bar (12) is described, comprising a connection section (42) for mechanical connection to the equipotential bonding bar (12) and a plurality of connections (18) for conductors (20). The terminal (14) has a one-piece spring unit (26) which has a base (28) and a plurality of spring arms (30) for resiliently clamping the conductors (20). At least two spring arms (30) of the plurality of spring arms (30) are provided on a first side (32) of the base (28), and at least two spring arms (30) of the plurality of spring arms (30) are provided on a second side (34) of the base (28), which is opposite the first side (32). Furthermore, an assembly (10) and a method for producing a spring unit (26) for a terminal (14) are described.

The utility model relates to a grounding switch mechanism for a centrally installed switchgear. The grounding switch mechanism comprises a first transmission shaft, a connecting seat, a first connecting rod, a first vertical rod, a second connecting rod, a support, a rotating shaft and a grounding switch. The first transmission shaft is horizontally and rotatably arranged at the bottom of the cable chamber, and one end of the first transmission shaft is connected with the driving motor; the connecting seat is fixedly sleeved on the first transmission shaft; one end of the first connecting rod is fixed on the connecting seat; first connecting parts are arranged at the two ends of the first vertical rod, the lower end of the first vertical rod is hinged to the first connecting rod through the first connecting parts, the upper end of the first vertical rod is hinged to the second connecting rod through the first connecting parts, and the first vertical rod is kept vertical all the time; one end of the second connecting rod fixedly sleeves the rotating shaft; the rotating shaft is horizontally and rotatably arranged on the bracket; the grounding knife is fixedly sleeved on the rotating shaft; the circuit breaker is connected with an adapter, and a grounding head of the adapter directly faces the grounding knife. The grounding switch mechanism is arranged in the cable chamber, so that personal safety is protected.