CN201252348Y - Box-type bus-connecting device containing transformer bank - Google Patents
Box-type bus-connecting device containing transformer bank Download PDFInfo
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- CN201252348Y CN201252348Y CNU200820150177XU CN200820150177U CN201252348Y CN 201252348 Y CN201252348 Y CN 201252348Y CN U200820150177X U CNU200820150177X U CN U200820150177XU CN 200820150177 U CN200820150177 U CN 200820150177U CN 201252348 Y CN201252348 Y CN 201252348Y
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- bus
- ring
- shield sheath
- main unit
- earth connection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/005—Electrical connection between switchgear cells
Abstract
The utility model relates to a box-type bus-connecting device containing transformer bank comprising three bus connecting devices, wherein three bus insulators of the three bus connecting devices are arranged on a cabinet of a ring main unit, the other bus insulators are arranged on a framework of a substation transformer, and the former three bus insulators are corresponding to the latter three bus insulators one by one, the middle shafts of the corresponding bus insulators are overlapped with each other, three buses of the ring main unit are respectively connected with electric contacts of three bus insulators, the three buses of the substation transformer are respectively connected with the electric contacts of the later three bus insulators and are connected with the two respectively corresponded bus insulators in a clamping mode through each of three bus connectors, and the ring main unit and the substation transformer are split-jointed into the box-type transformer. The device has the advantages that the installation is simple and easy, the requirements to the technical level of workers is lower, no exposed conductive part exists, the insulating performance is good, and no space is remained between the ring main unit and the substation transformer, the structure is compact and smart, and the occupied space is small and the like.
Description
Technical field
The utility model relates to a kind of box-type transformation unit of bus connecting devices, belongs to the technical field of electric power dispensing.
Background technology
The box-type transformation unit is a kind of important electric power dispensing device.Existing box-type transformation unit contains ring main unit and distribution transformer; three inputs are housed in the cabinet of ring main unit; three fuses; three overvoltages; overcurrent protector; three electric brakees and three buses; three porcelain insulators are housed on the cabinet; three inputs are connected with three phase lines of power transmission network by three core cables in three single-core cables or the three-core cable respectively; the electric energy of power transmission network divides three the tunnel to enter ring main unit by three inputs; every road contains fuse; overvoltage; overcurrent protector; each one of electric brake and bus; one end of three buses is connected with separately electric brake respectively; the other end of three buses is connected with the conductor of separately porcelain insulator respectively; distribution transformer contains frame; three buses; three inputs and three outputs; three porcelain insulators are housed on the frame; one end of three buses is connected with the conductor of separately porcelain insulator respectively; the other end of three buses is connected with separately input respectively; three outputs, three core cables in three single-core cables or three-core cable respectively are connected with three phase lines of power distribution network, and conductor and the cable conductor of three porcelain insulators of distribution transformer between and three inputs of distribution transformer of ring main unit by being connected across its three porcelain insulators link together.Electric current from three phase lines output of power transmission network; three core cables in three cables or three-core cable flow into three inputs of ring main units respectively; three road electric currents are respectively through each self-corresponding fuse; overvoltage; overcurrent protector and electric brake; flow into an end of three buses; flow out through the other end of three buses and the conductor of three porcelain insulators again; then the cable between the conductor of three porcelain insulators of the conductor of three three porcelain insulators that are connected across ring main unit and distribution transformer respectively; the conductor of three porcelain insulators of distribution transformer and three buses flow into three inputs of distribution transformers, flow out through three outputs of distribution transformer respectively at last.
The above-mentioned cable that passes through has following shortcoming with the background technology that ring main unit and distribution transformer link together:
1, for realizing that ring main unit is connected with cable between the distribution transformer, need to consider the bending radius of cable installation and workmen's working space, this just requires must will reserve suitable spacing between ring main unit and distribution transformer, cause the box-type transformation set structure not compact, institute takes up space big, has limited the scope of application of this unit to a certain extent.
2, workmen's technical merit is uneven; and cable is connected with certain technical requirements; connect the step complexity of operation, regular meeting causes the connection between ring main unit and the distribution transformer unreliable because of human factor, causes unnecessary quality accident when causing the box-type transformation unit operation.
3, adopt cable to connect and cable end will occur exposing, this is the important safety hidden danger that influences the normal operation of electric equipment, and is not in place as safeguard procedures, exposes cable end and meets water, foreign material etc., all can cause device damage, even cause personal injury accident.As adopt insulating case to expose cable end and insulate in the external world, the one, difficulty of construction is big, efficient is low, the 2nd, reliability can not guarantee, the coupling part of cable end, and voltage is higher, under normal operation as connect imprecision, insulating case is easy to pitch, and loses insulation effect, even buries the hidden danger of fault.
Summary of the invention
For overcoming the shortcoming of background technology, the inventor has researched and developed bus connecting device, is used for replacing being connected across two circuit elements between the bus specially: two porcelain insulators and a cable.
The purpose of this utility model provides a kind of box-type transformation unit of bus connecting devices.
For achieving the above object, the utility model adopts following technical scheme.This unit contains three bus connecting devices, three bus-bar insulators in three bus connecting devices are installed on the cabinet of ring main unit, three bus-bar insulators are installed on the frame of distribution transformer in addition, first three bus-bar insulator is corresponding one by one with back three bus-bar insulators, the central shaft of corresponding bus lines insulator overlaps mutually, three buses of ring main unit are connected with the electrical contact of first three bus-bar insulator respectively, three buses of distribution transformer are connected with the electrical contact of back three bus-bar insulators respectively, clamping by each and each self-corresponding two bus-bar insulators in three bus ties makes ring main unit and distribution transformer be spliced into the box-type transformation unit.The advantage of this unit is that installation is simple and easy, and is low to workmen's technical merit requirement, no exposed conductive part, good insulation preformance does not need slot milling between ring main unit and the distribution transformer, compact conformation is small and exquisite, institute takes up space little, and electric power transfer is not subjected to the influence of external environment condition.
Now describe the technical solution of the utility model in detail.A kind of box-type transformation unit of bus connecting devices; contain ring main unit and distribution transformer; three inputs are housed in the cabinet of ring main unit; three fuses; three overvoltages; overcurrent protector; three electric brakees and three buses; three inputs are connected with three phase lines of power transmission network by three core cables in three single-core cables or the three-core cable respectively; the electric energy of power transmission network divides three the tunnel to enter ring main unit by three inputs; every road contains fuse; overvoltage; overcurrent protector; each one of electric brake and bus; one end of three buses is connected with separately electric brake respectively; distribution transformer contains frame; three buses; three inputs and three outputs; one end of three buses is connected with separately input respectively; three outputs, three core cables in three single-core cables or three-core cable respectively are connected with three phase lines of power distribution network; it is characterized in that; it also contains three bus connecting devices; the structure of three bus connecting devices is identical; a bus connecting device is by two bus-bar insulators and the auxiliary products that bus tie is formed; the structure of two bus-bar insulators is identical; bus-bar insulator contains insulating cover and electrical contact; the material that constitutes insulating cover is an epoxy resin; insulating cover is cup-shaped; q installing hole is evenly distributed on the cover mouth of insulating cover; q is 3～8 natural number; sealing has the inserts nut in each installing hole; the constituent material of electrical contact is a copper, the bottom of electrical contact; middle part and head are cylindrical respectively; cylindrical and taper type, electrical contact are locked in the core at the bottom of the cover of insulating cover in the insulating cover; the bottom of electrical contact is run through at the bottom of the cover of insulating cover; the central shaft of electrical contact overlaps with the central shaft of insulating cover, and the bottom of electrical contact has bus screw is installed, and bus tie contains electric conductor and insulating sleeve; electric conductor contains m contact; two lining rings; two gear rings and n spring coil; m is 6～18 natural number, and n is 2～6 even number, and the material that constitutes contact is a copper; the shape of all contacts is all identical with size; the two ends of the outside of contact and middle part are shaped on spring breach and gear ring breach respectively, and the two ends of the inner edge of contact are shaped on respectively with the middle part and contact inclined-plane and locating notch, the spring breach; gear ring breach and locating notch are all rectangular; the material that constitutes lining ring is a stainless steel; the shape of two lining rings is all identical with size, and it is circular that lining ring is, and is shaped on m breach on the lining ring; m breach is all rectangular; m breach is uniformly distributed in the outer rim of the annulus of lining ring, and m breach radius from the outer rim of lining ring along lining ring extends to the center of circle of lining ring, and the material that constitutes gear ring is a silicon rubber; the shape of two gear rings is all identical with size; gear ring is cylindrical, and p tooth evenly distributes and stand on the outer wall of gear ring, and p is 8～12 natural number; the shape of all spring coils is all identical with size; spring coil is end to end hairspring, and the material that constitutes insulating sleeve is a silicon rubber, and insulating sleeve is hollow drum; the inner space of insulating sleeve is cylindric; m contact locating notch by separately respectively with two lining rings on each self-corresponding breach be fastened togather, constitute hollow cylinder, hoop cover n/2 road spring coil respectively in two spring breach of this hollow cylinder; hoop cover twice gear ring in the gear ring breach of this hollow cylinder; hollow cylinder; n/2 road spring coil and twice gear ring constitute electric conductor, tooth and the inwall of the insulating sleeve inside that is fixed on insulating sleeve of electric conductor by gear ring, and three bus-bar insulators in three bus connecting devices are installed on the cabinet of ring main unit; three bus-bar insulators in addition in three bus connecting devices are installed on the frame of distribution transformer; first three bus-bar insulator is corresponding one by one with back three bus-bar insulators, and the central shaft of corresponding bus lines insulator overlaps mutually, and the other end of three buses of ring main unit is installed screw with the bus of the electrical contact of first three bus-bar insulator respectively and is connected; the other end of three buses of distribution transformer is installed screw with the bus of the electrical contact of back three bus-bar insulators respectively and is connected, and ring main unit and distribution transformer are stitched together by the buckle of each and each self-corresponding two bus-bar insulators in three bus ties.
The technical solution of the utility model is further characterized in that, each bus tie also contains shield sheath, ground spring circle and earth connection, the place, Middle Ring Line of insulating sleeve has the cross section and is circular groove, the material that constitutes shield sheath is a silicon rubber, shield sheath is cylindrical, the ground spring circle is end to end hairspring, earth connection is an insulated conductor, the shield sheath hoop is enclosed within the middle part of the outer wall of insulating sleeve, ground spring circle hoop is enclosed within the recess of shield sheath, the lead and the ground spring circle of earth connection one end are stranded, and when ring main unit and distribution transformer were spliced into described box-type transformation unit, the earth connection other end was connected on the earth terminal of ring main unit.
The technical solution of the utility model is further characterized in that, m=12, n=4, p=8, q=6.
The technical solution of the utility model is further characterized in that, contact and electrical contact surperficial silver coated.
Compare with background technology, the utility model has following advantage:
1, ring main unit and distribution transformer are finished splicing by bus connecting device, do not need slot milling between the two, and compact conformation is small and exquisite, and institute takes up space little.
2, the splicing of ring main unit and distribution transformer is simple and easy, and is low to workmen's technical merit requirement.
3, ring main unit and distribution transformer are finished splicing by bus connecting device, do not have to expose cable end, and good insulation preformance makes electric power transfer not be subjected to the influence of external environment condition.
Description of drawings
Fig. 1 is the cutaway view of the bus tie of embodiment 2, among the figure, and the 2nd, bus tie, the 20th, lining ring, the 21st, contact, the 22nd, spring coil, the 23rd, gear ring, the 24th, insulating sleeve, the 25th, shield sheath, the 26th, the ground spring circle, there is the cross section at A-A and B-B place.
Fig. 2 is the schematic cross-section at A-A place among Fig. 1.Fig. 3 is the schematic cross-section at B-B place among Fig. 1.
Fig. 4 is the structural representation of contact 21, among the figure, and the 210th, spring breach, the 211st, locating notch, the 212nd, gear ring breach.Two spring breach 210 and two locating notches 211 are arranged on the contact 21.
Fig. 5 is the bus-bar insulator cutaway view, among the figure, and the 1st, bus-bar insulator, the 10th, insulating cover, the 101st, the cover mouth, the 102nd, the cover end, the 103rd, installing hole, the 104th, nut, the 11st, electrical contact, the 110th, bus is installed screw.
Fig. 6 is the connection diagram of two bus-bar insulators 1 and a bus tie 2.
Fig. 7 is the schematic top plan view of box-type transformation unit of the present utility model, among the figure, and the 30th, ring main unit, the 31st, cabinet, the 40th, distribution transformer, the 41st, frame.
Fig. 8 is the schematic diagram of looking of box-type transformation unit of the present utility model, among the figure, and the 32nd, earth terminal, the 33rd, earth connection.
Embodiment
Now describe the technical solution of the utility model in conjunction with the accompanying drawings and embodiments in detail.
A kind of box-type transformation unit of bus connecting devices; contain ring main unit 30 and distribution transformer 40; three inputs are housed in the cabinet 31 of ring main unit 30; three fuses; three overvoltages; overcurrent protector; three electric brakees and three buses; three inputs are connected with three phase lines of power transmission network by three core cables in three single-core cables or the three-core cable respectively; the electric energy of power transmission network divides three the tunnel to enter ring main unit 30 by three inputs; every road contains fuse; overvoltage; overcurrent protector; each one of electric brake and bus; one end of three buses is connected with separately electric brake respectively; distribution transformer 40 contains frame 41; three buses; three inputs and three outputs; one end of three buses is connected with separately input respectively; three outputs, three core cables in three single-core cables or three-core cable respectively are connected with three phase lines of power distribution network; it is characterized in that; it also contains three bus connecting devices; the structure of three bus connecting devices is identical; a bus connecting device is by two bus-bar insulators 1 and the auxiliary products that bus tie 2 is formed; the structure of two bus-bar insulators 1 is identical; bus-bar insulator 1 contains insulating cover 10 and electrical contact 11; the material that constitutes insulating cover 10 is an epoxy resin; insulating cover 10 is cup-shaped; q installing hole 103 is evenly distributed on the cover mouth 101 of insulating cover 1; q is 3～8 natural number; sealing has inserts nut 104 in each installing hole 103; the constituent material of electrical contact 11 is a copper, the bottom of electrical contact 11; middle part and head are cylindrical respectively; cylindrical and taper type, electrical contact 11 are locked at the bottom of the cover of insulating covers 10 in the insulating cover 10 102 core; the bottom of electrical contact 11 runs through at the bottom of the cover of insulating cover 10 102; the central shaft of electrical contact 11 overlaps with the central shaft of insulating cover 10, and the bottom of electrical contact 11 has bus screw 110 is installed, and bus tie 2 contains electric conductor 27 and insulating sleeve 24; electric conductor 27 contains m contact 21; two lining rings 20; two gear rings 23 and n spring coil 22; m is 6～18 natural number, and n is 2～6 even number, and the material that constitutes contact 21 is a copper; the shape of all contacts 21 is all identical with size; the two ends of the outside of contact 21 and middle part are shaped on spring breach 210 and gear ring breach 212 respectively, and the two ends of the inner edge of contact 21 are shaped on respectively with the middle part and contact inclined-plane 213 and locating notch 211, spring breach 210; gear ring breach 212 and locating notch 211 are all rectangular; the material that constitutes lining ring 20 is a stainless steel; the shape of two lining rings 20 is all identical with size, and lining ring 20 is circular, is shaped on m breach on the lining ring 20; m breach is all rectangular; m breach is uniformly distributed in the outer rim of the annulus of lining ring 20, and m breach radius from the outer rim of lining ring 20 along lining ring 20 extends to the center of circle of lining ring 20, and the material that constitutes gear ring 23 is a silicon rubber; the shape of two gear rings 23 is all identical with size; gear ring 23 is cylindrical, and p tooth evenly distributes and stand on the outer wall of gear ring 23, and p is 8～12 natural number; the shape of all spring coils 22 is all identical with size; spring coil 22 is end to end hairsprings, and the material that constitutes insulating sleeve 24 is a silicon rubber, and insulating sleeve 24 is hollow drums; the inner space of insulating sleeve 24 is cylindric; m contact 21 locating notch 211 by separately respectively with two lining rings 20 on each self-corresponding breach be fastened togather, constitute hollow cylinder, hoop cover n/2 road spring coil 22 respectively in two spring breach 210 of this hollow cylinder; hoop cover twice gear ring 23 in the gear ring breach 212 of this hollow cylinder; hollow cylinder; n/2 road spring coil 22 and twice gear ring 23 constitutes electric conductors 27, tooth and the inwall of insulating sleeve 24 inside that is fixed on insulating sleeve 23 of electric conductor 27 by gear ring 23, and three bus-bar insulators 1 in three bus connecting devices are installed on the cabinet 31 of ring main unit 30; three bus-bar insulators 1 in addition in three bus connecting devices are installed on the frame 41 of distribution transformer 40; first three bus-bar insulator 1 is corresponding one by one with back three bus-bar insulators 1, and the central shaft of corresponding bus lines insulator overlaps mutually, and the other end of three buses of ring main unit 30 is installed screw 110 with the bus of the electrical contact 11 of first three bus-bar insulator 1 respectively and is connected; the other end of three buses of distribution transformer 40 is installed screw 110 with the bus of the electrical contact 11 of back three bus-bar insulators 1 respectively and is connected, and ring main unit 30 and distribution transformer 40 are stitched together by the buckle of each and each self-corresponding two bus-bar insulators in three bus ties 2.
Except for the following differences, remainder and embodiment 1 are identical.
Each bus tie 2 also contains shield sheath 25, ground spring circle 26 and earth connection, the place, Middle Ring Line of insulating sleeve 24 has the cross section and is circular groove, the material that constitutes shield sheath 25 is a silicon rubber, shield sheath 25 is cylindrical, ground spring circle 26 is end to end hairsprings, earth connection 33 is insulated conductors, shield sheath 25 hoops are enclosed within the middle part of the outer wall of insulating sleeve 24, ground spring circle 26 hoops are enclosed within the recess of shield sheath 25, the lead and the ground spring circle 26 of earth connection 33 1 ends are stranded, when ring main unit 30 and distribution transformer 40 were spliced into described box-type transformation unit, earth connection 33 other ends were connected on the earth terminal 32 of ring main unit 30.
Embodiment 3
Except for the following differences, remainder and embodiment 1 are identical.m＝12，n＝4，p＝8，q＝6。
Embodiment 4
Except for the following differences, remainder and embodiment 2 are identical.m＝12，n＝4，p＝8，q＝6。
Embodiment 5
Except for the following differences, remainder and embodiment 1 are identical.Contact 21 and electrical contact 11 surperficial silver coated.
Embodiment 6
Except for the following differences, remainder and embodiment 2 are identical.Contact 21 and electrical contact 11 surperficial silver coated.
Embodiment 7
Except for the following differences, remainder and embodiment 1 are identical.M=12, n=4, p=8, q=6, contact 21 and electrical contact 11 surperficial silver coated.
Embodiment 8
Except for the following differences, remainder and embodiment 2 are identical.M=12, n=4, p=8, q=6, contact 21 and electrical contact 11 surperficial silver coated.
Claims (7)
1; a kind of box-type transformation unit of bus connecting devices; contain ring main unit (30) and distribution transformer (40); in the cabinet (31) of ring main unit (30) three inputs are housed; three fuses; three overvoltages; overcurrent protector; three electric brakees and three buses; three inputs are connected with three phase lines of power transmission network by three core cables in three single-core cables or the three-core cable respectively; the electric energy of power transmission network divides three the tunnel to enter ring main unit (30) by three inputs; every road contains fuse; overvoltage; overcurrent protector; each one of electric brake and bus; one end of three buses is connected with separately electric brake respectively; distribution transformer (40) contains frame (41); three buses; three inputs and three outputs; one end of three buses is connected with separately input respectively; three outputs, three core cables in three single-core cables or three-core cable respectively are connected with three phase lines of power distribution network; it is characterized in that; it also contains three bus connecting devices; the structure of three bus connecting devices is identical; the auxiliary products that bus connecting device is made up of two bus-bar insulators (1) and a bus tie (2); the structure of two bus-bar insulators (1) is identical; bus-bar insulator (1) contains insulating cover (10) and electrical contact (11); the material that constitutes insulating cover (10) is an epoxy resin; insulating cover (10) is cup-shaped; q installing hole (103) is evenly distributed on the cover mouth (101) of insulating cover (1); q is 3～8 natural number; the interior sealing of each installing hole (103) has inserts nut (104); the constituent material of electrical contact (11) is a copper, the bottom of electrical contact (11); middle part and head are cylindrical respectively; cylindrical and taper type, electrical contact (11) are locked in the core of (102) at the bottom of the cover of the interior insulating cover of insulating cover (10) (10); (102) at the bottom of the cover of insulating cover (10) are run through in the bottom of electrical contact (11); the central shaft of electrical contact (11) overlaps with the central shaft of insulating cover (10), and the bottom of electrical contact (11) has bus screw (110) is installed, and bus tie (2) contains electric conductor (27) and insulating sleeve (24); electric conductor (27) contains m contact (21); two lining rings (20); two gear rings (23) and n spring coil (22); m is 6～18 natural number, and n is 2～6 even number, and the material that constitutes contact (21) is a copper; the shape of all contacts (21) is all identical with size; the two ends of the outside of contact (21) and middle part are shaped on spring breach (210) and gear ring breach (212) respectively, and the two ends of the inner edge of contact (21) are shaped on respectively with the middle part and contact inclined-plane (213) and locating notch (211), spring breach (210); gear ring breach (212) and locating notch (211) are all rectangular; the material that constitutes lining ring (20) is a stainless steel; the shape of two lining rings (20) is all identical with size, and lining ring (20) is circular, is shaped on m breach on the lining ring (20); m breach is all rectangular; m breach is uniformly distributed in the outer rim of the annulus of lining ring (20), and m breach radius from the outer rim of lining ring (20) along lining ring (20) extends to the center of circle of lining ring (20), and the material that constitutes gear ring (23) is a silicon rubber; the shape of two gear rings (23) is all identical with size; gear ring (23) is cylindrical, and p tooth evenly distributes and stand on the outer wall of gear ring (23), and p is 8～12 natural number; the shape of all spring coils (22) is all identical with size; spring coil (22) is end to end hairspring, and the material that constitutes insulating sleeve (24) is a silicon rubber, and insulating sleeve (24) is hollow drum; the inner space of insulating sleeve (24) is cylindric; m contact (21) gone up each self-corresponding breach with two lining rings (20) respectively by locating notch (211) separately and is fastened togather, and constitutes hollow cylinder, and hoop overlaps n/2 road spring coil (22) respectively in two spring breach (210) of this hollow cylinder; hoop cover twice gear rings (23) in the gear ring breach (212) of this hollow cylinder; hollow cylinder; n/2 road spring coil (22) and twice gear ring (23) constitute electric conductor (27), tooth and the inwall of insulating sleeve (24) inside that is fixed on insulating sleeve (23) of electric conductor (27) by gear ring (23), and three bus-bar insulators (1) in three bus connecting devices are installed on the cabinet (31) of ring main unit (30); three bus-bar insulators (1) in addition in three bus connecting devices are installed on the frame (41) of distribution transformer (40); first three bus-bar insulator (1) is corresponding one by one with back three bus-bar insulators (1), and the central shaft of corresponding bus lines insulator overlaps mutually, and the other end of three buses of ring main unit (30) is installed screw (110) with the bus of the electrical contact (11) of first three bus-bar insulator (1) respectively and is connected; the other end of three buses of distribution transformer (40) is installed screw (110) with the bus of the electrical contact (11) of back three bus-bar insulators (1) respectively and is connected, and ring main unit (30) and distribution transformer (40) are stitched together by the buckle of each and each self-corresponding two bus-bar insulators (1) in three bus ties (2).
2, the box-type transformation unit of bus connecting devices according to claim 1, it is characterized in that, bus tie (2) also contains shield sheath (25), ground spring circle (26) and earth connection, the place, Middle Ring Line of insulating sleeve (24) has the cross section and is circular groove, the material that constitutes shield sheath (25) is a silicon rubber, shield sheath (25) is cylindrical, ground spring circle (26) is end to end hairspring, earth connection (33) is an insulated conductor, shield sheath (25) hoop is enclosed within the middle part of the outer wall of insulating sleeve (24), ground spring circle (26) hoop is enclosed within the recess of shield sheath (25), the lead of earth connection (33) one ends and ground spring circle (26) are stranded, during use, earth connection (33) other end is connected on the earth terminal (32) of ring main unit (30).
3, the box-type transformation unit of bus connecting devices according to claim 1 is characterized in that, m=12, n=4, p=8, q=6.
4, the box-type transformation unit of bus connecting devices according to claim 1 is characterized in that, contact (21) and electrical contact (11) surperficial silver coated.
5, the box-type transformation unit of bus connecting devices according to claim 1, it is characterized in that, bus tie (2) also contains shield sheath (25), ground spring circle (26) and earth connection, the place, Middle Ring Line of insulating sleeve (24) has the cross section and is circular groove, the material that constitutes shield sheath (25) is a silicon rubber, shield sheath (25) is cylindrical, ground spring circle (26) is end to end hairspring, earth connection (33) is an insulated conductor, shield sheath (25) hoop is enclosed within the middle part of the outer wall of insulating sleeve (24), and ground spring circle (26) hoop is enclosed within the recess of shield sheath (25), and the lead of earth connection (33) one ends and ground spring circle (26) are stranded, during use, earth connection (33) other end is connected on the earth terminal (32) of ring main unit (30), m=12, n=4, p=8, q=6.
6, the box-type transformation unit of bus connecting devices according to claim 1, it is characterized in that, bus tie (2) also contains shield sheath (25), ground spring circle (26) and earth connection, the place, Middle Ring Line of insulating sleeve (24) has the cross section and is circular groove, the material that constitutes shield sheath (25) is a silicon rubber, shield sheath (25) is cylindrical, ground spring circle (26) is end to end hairspring, earth connection (33) is an insulated conductor, shield sheath (25) hoop is enclosed within the middle part of the outer wall of insulating sleeve (24), ground spring circle (26) hoop is enclosed within the recess of shield sheath (25), the lead of earth connection (33) one ends and ground spring circle (26) are stranded, during use, earth connection (33) other end is connected on the earth terminal (32) of ring main unit (30), contact (21) and electrical contact (11) surperficial silver coated.
7, the box-type transformation unit of bus connecting devices according to claim 1, it is characterized in that, bus tie (2) also contains shield sheath (25), ground spring circle (26) and earth connection, the place, Middle Ring Line of insulating sleeve (24) has the cross section and is circular groove, the material that constitutes shield sheath (25) is a silicon rubber, shield sheath (25) is cylindrical, ground spring circle (26) is end to end hairspring, earth connection (33) is an insulated conductor, shield sheath (25) hoop is enclosed within the middle part of the outer wall of insulating sleeve (24), ground spring circle (26) hoop is enclosed within the recess of shield sheath (25), the lead of earth connection (33) one ends and ground spring circle (26) are stranded, during use, earth connection (33) other end is connected on the earth terminal (32) of ring main unit (30), m=12, n=4, p=8, q=6, contact (21) and electrical contact (11) surperficial silver coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820150177XU CN201252348Y (en) | 2008-06-27 | 2008-06-27 | Box-type bus-connecting device containing transformer bank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820150177XU CN201252348Y (en) | 2008-06-27 | 2008-06-27 | Box-type bus-connecting device containing transformer bank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201252348Y true CN201252348Y (en) | 2009-06-03 |
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ID=40748011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820150177XU Expired - Lifetime CN201252348Y (en) | 2008-06-27 | 2008-06-27 | Box-type bus-connecting device containing transformer bank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201252348Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508155A (en) * | 2017-08-21 | 2017-12-22 | 安徽省颍上县正泰电器有限责任公司 | Spell cabinet system in a kind of scene |
| CN109861094A (en) * | 2019-03-18 | 2019-06-07 | 杭州易正科技有限公司 | One kind can combined electrical cabinet |
-
2008
- 2008-06-27 CN CNU200820150177XU patent/CN201252348Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508155A (en) * | 2017-08-21 | 2017-12-22 | 安徽省颍上县正泰电器有限责任公司 | Spell cabinet system in a kind of scene |
| CN109861094A (en) * | 2019-03-18 | 2019-06-07 | 杭州易正科技有限公司 | One kind can combined electrical cabinet |
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