CN111952752B - Distribution uninterrupted operation system of 0.4kV power system and operation method thereof - Google Patents
Distribution uninterrupted operation system of 0.4kV power system and operation method thereof Download PDFInfo
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- CN111952752B CN111952752B CN202010767160.4A CN202010767160A CN111952752B CN 111952752 B CN111952752 B CN 111952752B CN 202010767160 A CN202010767160 A CN 202010767160A CN 111952752 B CN111952752 B CN 111952752B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/465—Identification means, e.g. labels, tags, markings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/627—Snap or like fastening
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/64—Means for preventing incorrect coupling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4854—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a wire spring
- H01R4/4863—Coil spring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/027—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for connecting conductors by clips
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a uninterruptible operation system, in particular to a 0.4kV power system power distribution uninterruptible operation system and an operation method thereof. The connector comprises a quick connector, a main body part and a connector conversion device, wherein the connector conversion device is inserted into the main body part, and the quick connector is inserted into the connector conversion device. The emergency power supply quick access device is adopted in the emergency repair and operation and maintenance work, so that the quick recovery of power supply can be facilitated, the workload of the emergency repair and operation and maintenance is fundamentally reduced, the user power recovery time is shortened, the high demonstration effect and the high practical value are realized in the aspect of improving the power supply reliability, and new technology and new equipment are added for the safe operation of a power grid.
Description
Technical Field
The invention relates to a uninterruptible operation system, in particular to a 0.4kV power system power distribution uninterruptible operation system and an operation method thereof.
Background
With the continuous appearance of various high-precision instruments, the birth of various emerging industries and the continuous improvement of the technological level, the development of economic construction has stronger dependence on electricity, and the requirements on the power supply quality and reliability of power enterprises have higher. The scale of the net rack is continuously enlarged, the operation hidden trouble of equipment and the tripping times of line faults are increased, particularly, the frequency of haze weather and complex weather in recent years is increased, the times of faults such as equipment short circuit, line tripping and the like are obviously increased, and the working pressure of overhaul and equipment maintenance is increased. The difficulty of ensuring the power supply reliability is greater, and the requirements of power users on the power supply reliability and the like are gradually improved. The contradiction between the two is increasingly prominent. Therefore, the need for performing uninterrupted operation of the power line is increasing.
At present, when a user needs emergency power supply under the influence of line overhaul, fault power failure or natural disasters, the user can only wait for the emergency power generation vehicle to reach a power distribution station (user side) and then access the 0.4kV power supply of the power generation vehicle to the power distribution equipment side for emergency power supply. The following three access methods are mainly used: (1) conventional access methods. The traditional connection method mainly uses a spanner and bolt fastening method to connect, firstly, terminal bolts on a busbar of power distribution equipment are detached from connecting wires or punching wiring is needed on the busbar, and then cables of a A, B, C phase and zero line of an emergency power supply are connected into the busbar at the low-voltage side to supply power. The field operation is sometimes limited by the installation position of the power distribution equipment and the interval between the bus bars, which is time-consuming and labor-consuming; and (2) an emergency interface access method of the mobile standby power supply. The emergency interface access method of the mobile standby power supply is to refit an emergency interface of the power distribution equipment, which is not preloaded with the mobile standby power supply, and has higher installation cost but lower utilization rate; (3) U-bolt type clamp-on method. The emergency power generation car cable is connected to one ends of the 4 external switches respectively, and the other ends of the emergency power generation car cable are clamped on A, B, C-phase low-voltage side busbar and zero line respectively. The clamping and switching method is limited by the arrangement direction of the copper bars, and is not applicable to the copper bars which are transversely arranged; the assembly and disassembly are more laborious, and the clamping piece easy to use shifts on the copper bar and even falls off.
Disclosure of Invention
The invention mainly solves the defects existing in the prior art, and provides a 0.4kV power system distribution uninterrupted operation system capable of realizing continuous power supply, improving the reliability of the power supply and the integrity of power supply enterprises, greatly reducing the complaint rate of customers, creating more production values for industrial users and improving the life quality for residential users and an operation method thereof.
The technical problems of the invention are mainly solved by the following technical proposal:
The power distribution uninterrupted operation system of the 0.4kV power system comprises a quick connector, a main body part and a connector conversion device, wherein the connector conversion device is inserted into the main body part, and the quick connector is inserted into the connector conversion device;
The main part include conducting piece and operating handle, the one end of conducting piece be flat conductive contact surface, the other end of conducting piece be the shell, the inner of shell be equipped with the adapter position of connecting, the outer end of shell be equipped with phase sequence color differentiation area inserted hole, the top of conducting piece be equipped with the working cylinder that fastens with the conducting piece, the working cylinder in be equipped with the piston rod that is elastic connection with the working cylinder, the piston rod carry out spacing removal along the working cylinder, the outer end of piston rod be equipped with the crimping board, operating handle drive working cylinder displacement and working cylinder take crimping board and flat conductive contact to personally submit movable contact and electrically conduct.
Preferably, the working cylinder barrel is positioned in a sleeved mode with the conducting piece through the supporting piece, the bottom end of the operating handle is a clamping piece, the inner end of the clamping piece is rotationally connected with the working cylinder barrel through a pair of transmission pieces, and the outer end of the clamping piece is rotationally connected with the supporting piece; the working cylinder barrel in be equipped with the spacing groove, the working cylinder barrel in be equipped with the main spring of piston rod looks crimping, the piston rod carry out the displacement along the spacing groove.
Preferably, a limiting block which is in rotary contact with the clamping piece is arranged in the supporting piece.
Preferably, the conducting piece is coated with an insulating layer, and is a copper rod; the connector conversion device is provided with a conversion pile head.
The operation method of the 0.4kV power system distribution uninterrupted operation system comprises the following steps:
When the power distribution cabinet busbar is in operation, the operating handle pushes the transmission piece to transmit the operating force to the cylinder type piston device, the cylinder type piston device is driven to do piston motion, the contact part of the crimping plate is designed to be saw-tooth, and when the friction force preventing device is clamped on the power distribution cabinet busbar, a falling fault occurs due to insufficient friction force of the crimping surface;
because the compression plate is clamped on the power distribution cabinet busbar by adopting a clamp fixing mode and controlling the compression spring to be clamped on the power distribution cabinet busbar by the operating handle, the clamping force is increased along with the movable stroke of the operating handle, and the self-compensation design meets the requirements of different types of power distribution cabinets and different types of busbar, so that the power generation vehicle can be connected to work smoothly; the product has wider adaptability.
The technical innovation points are as follows:
(1) In order to solve the problem that the operation of the traditional access method is time-consuming and labor-consuming; the emergency interface access method of the mobile standby power supply is modified, and the installation cost is high. The device is of a combined structure, is driven by a spring, has a self-compensating function, is connected with a busbar, is clamped on the busbar of the power distribution cabinet by adopting a clamp fixing mode and controlling a compression spring through an operation handle, the clamping force is increased along with the movable stroke of the operation handle, the self-compensating design meets the requirements of different types of busbars of power distribution cabinets of different types, the original cabinet type is not required to be modified and upgraded, the device is fully suitable for various working condition using conditions, and the connection work of a power generation vehicle is favorably finished. (2) The color ribbon is distinguished by the design phase sequence, A, B, C, N phases are respectively designed with different color ribbon marks, equipment damage caused by phase sequence error access is effectively prevented, and the risk of electric shock of phase sequence measuring personnel is reduced. (3) The clamp tail is provided with the quick plug switching device, emergency power generation equipment and a station power system can be connected quickly, complex access work is simplified, the device improves the working efficiency of operators on the premise that an emergency power generation car access box of a transformer substation is not required to be upgraded, running risks caused by station power voltage loss are effectively reduced, the risks of electric shock of equipment and operators can be reduced, and the clamp tail is high in popularization. (4) In order to strengthen the practicality of device at outdoor work, use the protection level to be IP67 quick plug connector at the input, insert the device adapter in with the connector when the power is replied, guarantee the protection performance when the device is placed in the open air, can avoid the rainwater to get into the damage device.
Social benefit:
The power distribution is implemented without power failure, continuous power supply can be realized, the power supply reliability and the integrity of power supply enterprises are improved, the customer complaint rate is greatly reduced, the industrial user creates more production values, and the resident user improves the life quality.
The operation mode is flexible. The electrified system is connected with the fault line section (or electrified crossing), equipment defect eliminating (or crossing construction) work is arranged in real time, equipment disease carrying operation time (or complicated power failure procedure) is shortened, accident power failure is reduced or even avoided, and equipment service life is prolonged.
And the safety risk is reasonably avoided. The misoperation accidents mostly occur in complex switching operation, the electric shock accidents of the mistakenly-logged-on electric equipment mostly occur in multi-loop one-circuit power failure operation, and the power distribution uninterrupted operation can be implemented to effectively avoid the occurrence of personal casualty accidents.
The emergency power supply quick access device is suitable for emergency power generation cables of various specifications and power distribution cabinet busbar of various arrangement modes. The self-compensating power distribution cabinet has the advantages that the problems of matching degree of the switching device, compatibility of the power distribution cabinet, quick access of an emergency power supply and the like are solved, the self-compensating design meets the requirements of different types of power distribution cabinets and different types of busbar, the power generation vehicle access work is favorably completed smoothly, the access time of the emergency power supply is shortened, and the emergency treatment efficiency of operation and maintenance personnel is improved. The device adopts a self-locking design, a locking device is not required to be additionally arranged, the structure of the device is greatly simplified, the operation of the device is more convenient, the volume of the device can be effectively reduced, and the adaptability of the device to the working environment is improved; the method is more beneficial to realizing the rapid and safe access of the low-voltage side emergency power supply. The emergency power supply quick access device is adopted in the emergency repair and operation and maintenance work, so that the quick recovery of power supply can be facilitated, the workload of the emergency repair and operation and maintenance is fundamentally reduced, the user power recovery time is shortened, the high demonstration effect and the high practical value are realized in the aspect of improving the power supply reliability, and new technology and new equipment are added for the safe operation of a power grid.
The supporting piece is riveted on two sides of the conducting piece to form an encircling channel for fixing the movable rail of the cylinder type piston device. The conductive part is provided with a flat plate type conductive contact surface at the head, the tail is provided with an adapter connector, the head and the tail are connected through a copper rod, the copper rod is provided with a riveting connection hole site, the support part is convenient to rivet, the whole structure adopts tin bronze with good conductivity and mechanical property as a matrix, the conductivity and the mechanical property are ensured by adopting a silver plating process, the handheld part is further coated with an insulating layer by insulating treatment, and the flame-retardant and insulating thermoplastic greatly improves durability and safety and is safer to use. The tail is designed with a phase sequence resolution color ribbon, A, B, C, N phases are respectively designed with different color ribbon marks, equipment damage caused by phase sequence error access is effectively prevented, and the risk of electric shock of phase sequence measuring personnel is reduced.
The operating handle adopts the encircling type structure, the clamping piece is clamped left and right to ensure that the operating force is uniformly distributed, the structural part is uniformly stressed to ensure the reliability of the device, and the holding part adopts insulating materials to improve the durability and the safety and is safer to use.
The connector conversion device comprises a conversion pile head, one end of the conversion pile head is designed to be connected with the adapter connecting position of the main body part through a spiral connector, the other end of the conversion pile head is designed to be connected with the quick connector through a direct-insertion connector, the middle of the conversion pile head is designed to be of an I-shaped structure, the connector conversion device integrally adopts insulation treatment to provide the protection performance of the IP67 protection assurance device when the device is placed outdoors, and rainwater can be prevented from entering the damage device.
During operation, the operating handle pushes the transmission piece to transmit operating force to the cylinder type piston device, the cylinder type piston device is driven to do piston motion, the contact part of the crimping plate is designed to be saw-tooth, and the friction force preventing device during contact is clamped on the busbar of the power distribution cabinet, so that falling faults occur due to insufficient friction force of the crimping surface. Because the compression plate is clamped on the power distribution cabinet busbar by adopting a clamp fixing mode and controlling the compression spring to be clamped on the power distribution cabinet busbar by the operating handle, the clamping force is increased along with the movable stroke of the operating handle, and the self-compensation design meets the requirements of different types of power distribution cabinets and different types of busbar, so that the power generation vehicle can be connected to work smoothly; the product has wider adaptability.
The device adopts the dead point design, and support piece designs has stop device, and operating handle rotates and continues to push down after the critical point, stops when arriving stop device, and this design need not locking device, can effectively prevent that the reaction force from appearing in the spring and the bounce-back that appears can not lock the dead phenomenon, firmly fixes the device in the limited position through the reaction force of spring, and will simplify the device structure greatly after removing locking device, and it is more convenient when making the device operate, can also reduce the device volume, promotes the adaptability of device to operational environment.
The invention provides a power distribution uninterrupted operation system of a 0.4kV power system and an operation method thereof, wherein an emergency power supply quick access device is adopted in the work of rush repair and operation maintenance, so that the quick recovery of power supply can be assisted, the workload of rush repair and operation maintenance is fundamentally reduced, the user power recovery time is accelerated, the demonstration effect and the practical value are higher in the aspect of improving the power supply reliability, and new technology and new equipment are added for the safe operation of a power grid.
Drawings
FIG. 1 is a schematic view of the assembled construction of the present invention;
FIG. 2 is a schematic view of an exploded perspective view of the present invention;
FIG. 3 is a schematic view of the structure of the main body part of the present invention;
FIG. 4 is a schematic view showing the state structure of the main body and the connector switching device according to the present invention;
Fig. 5 is a schematic view showing a state structure of the main body and the connector switching device in the present invention.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Example 1: as shown in the figure, the power distribution uninterrupted operation system of the 0.4kV power system comprises a quick connector 1, a main body part 2 and a connector conversion device 3, wherein the connector conversion device 3 is inserted into the main body part 2, and the quick connector 1 is inserted into the connector conversion device 3;
The main part 2 include conducting piece 4 and operating handle 5, the one end of conducting piece 4 be flat conductive contact surface 6, the other end of conducting piece 4 be shell 20, the inner of shell 20 be equipped with adapter hookup location 7, the outer end of shell 20 be equipped with phase sequence color differentiation area inserted hole 8, the top of conducting piece 4 be equipped with conducting piece 4 fastening's work cylinder 9, work cylinder 9 in be equipped with work cylinder 9 be elastic connection's piston rod 10, piston rod 10 carry out spacing removal along work cylinder 9, the outer end of piston rod 10 be equipped with pressure plate 11, operating handle 5 drive work cylinder 9 displacement and work cylinder 9 drive pressure plate 11 and conductive contact surface 6 and be movable contact and electrically conduct.
The working cylinder 9 is positioned in a sleeved mode with the conducting piece 4 through the supporting piece 12, the bottom end of the operating handle 5 is provided with the clamping piece 13, the inner end of the clamping piece 13 is rotationally connected with the working cylinder 9 through the pair of transmission pieces 14, and the outer end of the clamping piece 13 is rotationally connected with the supporting piece 12; the working cylinder barrel 9 is internally provided with a limit groove 15, the working cylinder barrel 9 is internally provided with a main spring 16 which is in compression joint with the piston rod 10, and the piston rod 10 is displaced along the limit groove 15.
The support piece 12 is provided with a limiting block 17 which is in rotary contact with the clamping piece 13.
The conducting piece 4 is coated with an insulating layer 18, and the conducting piece 4 is a copper rod; the connector conversion device 3 is provided with a conversion pile head 19.
The operation method of the 0.4kV power system distribution uninterrupted operation system comprises the following steps:
When the power distribution cabinet busbar is in operation, the operating handle pushes the transmission piece to transmit the operating force to the cylinder type piston device, the cylinder type piston device is driven to do piston motion, the contact part of the crimping plate is designed to be saw-tooth, and when the friction force preventing device is clamped on the power distribution cabinet busbar, a falling fault occurs due to insufficient friction force of the crimping surface;
because the compression plate is clamped on the power distribution cabinet busbar by adopting a clamp fixing mode and controlling the compression spring to be clamped on the power distribution cabinet busbar by the operating handle, the clamping force is increased along with the movable stroke of the operating handle, and the self-compensation design meets the requirements of different types of power distribution cabinets and different types of busbar, so that the power generation vehicle can be connected to work smoothly; the product has wider adaptability.
Claims (3)
1. The utility model provides a 0.4kV electric power system distribution uninterrupted operation system, includes quick connector (1), its characterized in that: the quick connector comprises a main body part (2) and a connector conversion device (3), wherein the connector conversion device (3) is inserted into the main body part (2), and the quick connector (1) is inserted into the connector conversion device (3);
The main body part (2) comprises a conducting piece (4) and an operating handle (5), one end of the conducting piece (4) is a flat plate type conductive contact surface (6), the other end of the conducting piece (4) is a shell (20), an adapter connecting position (7) is arranged at the inner end of the shell (20), a phase sequence color-distinguishing belt inserting opening (8) is arranged at the outer end of the shell (20), the connector conversion device (3) is inserted into the phase sequence color-distinguishing belt inserting opening (8), a working cylinder barrel (9) fastened with the conducting piece (4) is arranged above the conducting piece (4), a piston rod (10) which is elastically connected with the working cylinder barrel (9) is arranged in the working cylinder barrel (9), the piston rod (10) performs limiting movement along the working cylinder barrel (9), a pressing plate (11) is arranged at the outer end of the piston rod (10), and the operating handle (5) drives the working cylinder barrel (9) to move and the pressing plate (11) to be in movable contact with the flat plate type conductive contact surface (6).
The working cylinder barrel (9) is in hollow sleeve positioning with the conducting piece (4) through the supporting piece (12), the bottom end of the operating handle (5) is provided with the clamping piece (13), the inner end of the clamping piece (13) is rotationally connected with the working cylinder barrel (9) through the pair of transmission pieces (14), and the outer end of the clamping piece (13) is rotationally connected with the supporting piece (12); a limiting groove (15) is formed in the working cylinder barrel (9), a main spring (16) which is in compression joint with the piston rod (10) is arranged in the working cylinder barrel (9), and the piston rod (10) moves along the limiting groove (15);
The conducting piece (4) is externally coated with an insulating layer (18), and the conducting piece (4) is a copper rod; the connector conversion device (3) is provided with a conversion pile head (19).
2. A 0.4kV power system distribution uninterruptible operation system according to claim 1, wherein: a limiting block (17) which is in rotary contact with the clamping piece (13) is arranged in the supporting piece (12).
3. A method of operating a 0.4kV power system distribution uninterruptible operation system according to claim 1 or 2, characterized by the steps of:
When the power distribution cabinet busbar is in operation, the operating handle pushes the transmission piece to transmit the operating force to the cylinder type piston device, the cylinder type piston device is driven to do piston motion, the contact part of the crimping plate is designed to be saw-tooth, and when the friction force preventing device is clamped on the power distribution cabinet busbar, a falling fault occurs due to insufficient friction force of the crimping surface;
Because the crimping board adopts clamp fixed mode to press from both sides compression spring clamp through operating handle and adorn on the female row of switch board, the clamping force increases along with operating handle movable stroke, and the demand of the female row of different types of switch boards of self-compensating design satisfied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767160.4A CN111952752B (en) | 2020-08-03 | 2020-08-03 | Distribution uninterrupted operation system of 0.4kV power system and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767160.4A CN111952752B (en) | 2020-08-03 | 2020-08-03 | Distribution uninterrupted operation system of 0.4kV power system and operation method thereof |
Publications (2)
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| CN102403779A (en) * | 2011-12-08 | 2012-04-04 | 河南省电力公司郑州供电公司 | Power supply system for bypass to operate without power failure |
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