CN109473926B - Pin structure of bus duct tapping unit - Google Patents
Pin structure of bus duct tapping unit Download PDFInfo
- Publication number
- CN109473926B CN109473926B CN201811565902.4A CN201811565902A CN109473926B CN 109473926 B CN109473926 B CN 109473926B CN 201811565902 A CN201811565902 A CN 201811565902A CN 109473926 B CN109473926 B CN 109473926B
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- China
- Prior art keywords
- pair
- pin
- shaped
- shell
- hinge shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010079 rubber tapping Methods 0.000 title claims abstract description 20
- 238000003780 insertion Methods 0.000 claims abstract description 33
- 230000037431 insertion Effects 0.000 claims abstract description 33
- 239000004020 conductor Substances 0.000 claims abstract description 31
- 238000005192 partition Methods 0.000 claims description 8
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
-
- 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
- H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
- H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
-
- 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
- H01R13/193—Means for increasing contact pressure at the end of engagement of coupling part, e.g. zero insertion force or no friction
Abstract
According to the pin structure of the bus duct tapping unit, the pair of pin sheets which are arranged in an X-shaped cross mode are hinged on the insertion support through the hinge shaft, the arc-shaped spring piece between the lower sections of the pair of pin sheets is sunken in the initial state, so that the distance between the pair of pin sheets is smaller and is in the contracted state, the insertion support is convenient to insert and mount in the shell of the instant cabinet-level bus duct and moves to the plugging position along the longitudinal opening groove, the long screw rod of the jacking device is lifted up along the rotation of the nut to prop up the middle part of the arc-shaped spring piece, the two ends of the arc-shaped spring piece support the lower sections of the pair of pin sheets to open to two sides, and meanwhile, the upper sections of the pair of pin sheets are correspondingly opened to the two sides to be in mutual contact conduction with the pair of phase line conductors at the corresponding positions on the inner walls of the two sides of the shell, so that the plugging resistance is small, the plugging matching position is accurate, the contact conduction is reliable, the current tapping effect is good, the plugging contact position is not easy to wear, and the operation is convenient; the pair of pin sheets also need to be in a contracted state when being withdrawn, thus forming a relative interlocking structure and having high safety coefficient.
Description
Technical Field
The invention relates to a pin structure of a bus duct tapping unit.
Background
The bus duct product needs to supply power to electric equipment through the tapping unit, the traditional bus duct product tapping unit is generally matched, spliced and conducted with a bus duct product phase line conductor through a vertical pin structure, splicing and conducting resistance is high, the bus duct product tapping unit cannot be completely spliced in place, and contact and conduction are unreliable; especially, a plug-in cabinet-level bus duct product is generally provided with a longitudinal open slot at the bottom of the bus duct shell, after the plug-in unit extends into the bus duct shell from the end part of the bus duct product, the plug-in unit moves to a plug-in position along the longitudinal open slot and then rotates by 90 degrees to enable the plug pins to be in plug-in fit with the phase line conductors, the angle is not easy to control in the rotary plug-in process, the operation is inconvenient, the current tapping effect is not good, and the plug-in contact part is easy to wear.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pin structure of a bus duct tapping unit, which has the advantages of accurate plugging matching position, small plugging resistance, reliable contact conduction and convenient operation.
The invention relates to a pin structure of a bus duct tapping unit, which comprises a plug-in cabinet-level bus duct shell with a longitudinal open groove at the bottom, wherein multiphase phase line conductors are fixedly arranged on the inner side walls of two sides of the shell, and the pin structure is characterized in that: an insertion bracket which is made of insulating materials and can linearly move along the longitudinal open slot is arranged in the middle of the inner cavity of the shell, and the lower end of the insertion bracket extends out of the shell; the middle part of the insertion bracket is at least provided with one hinge shaft, the hinge shaft is hinged with a pair of pin sheets, the pin sheets are arranged in an X-shaped and crossed manner, and the crossed part is sleeved on the hinge shaft and can be rotated around the hinge shaft to be unfolded or contracted simultaneously; the upper sections of the pair of pin sheets extend to two sides and are respectively contacted and communicated with a pair of phase line conductors at corresponding positions on the inner walls of the two sides of the shell, a platy supporting spring is connected between the lower sections of the pair of pin sheets, two ends of the supporting spring respectively prop against the lower sections of the pair of pin sheets, and a jacking device is arranged below the middle parts of the supporting springs; the jacking device comprises a long screw, a hexagonal nut is mounted on the upper middle part of the long screw in a matched manner, the hexagonal nut is clamped in a limiting groove in the insertion bracket and can longitudinally move along the limiting groove, the upper end of the long screw is propped against the middle part of the bottom surface of the supporting spring, and the bolt head at the lower end of the long screw extends out of the insertion bracket;
the upper ends of the pair of pin sheets are respectively provided with a section of arc section, and the pair of pin sheets are respectively contacted and conducted with the phase line conductors at the corresponding positions on the two sides of the shell through the arc sections;
the supporting spring comprises at least one pair of arc-shaped spring pieces;
a slope-shaped supporting block is arranged between the top end of the long screw rod and the supporting spring, the top end of the supporting block is an arc groove surface which can be matched with the arc spring piece, and a threaded connecting hole which can be matched and fixedly connected to the top end of the long screw rod is formed in the middle of the bottom surface of the supporting block;
the middle section of the double-layer middle partition plate is separated by a limiting rib to form a limiting groove for clamping a hexagonal nut in the inserting bracket;
the middle part of the inner surface of the top end of the shell is provided with a slot extending longitudinally, the top end of the insertion support is matched and limited outside two sides of the slot and can longitudinally move along the slot, and a grounding row with a T-shaped section is inserted in the slot; the inverted omega-shaped grounding pins are fixedly embedded in the top section of the insertion support, and the opening parts of the inverted omega-shaped grounding pins can be matched with the T-shaped grounding row in a plug-in manner and can longitudinally move along the T-shaped grounding row;
the outer side of the inverted omega-shaped grounding pin is provided with a U-shaped spring piece which can support the inverted omega-shaped grounding pin to be tightly clamped on the T-shaped grounding row;
an upper partition plate is arranged in the top section of the insertion bracket, a U-shaped mounting groove is formed in the middle of the upper partition plate, and an inverted omega-shaped grounding pin is fixedly embedded in the U-shaped mounting groove;
four-phase conductors are fixedly arranged on two side walls inside the shell, the four-phase conductors are opposite to each other, an upper hinge shaft and a lower hinge shaft are arranged on the insertion support, a pair of pin sheets are respectively hinged on each hinge shaft, the pair of pin sheets on each hinge shaft are arranged in an X-shaped and crossed mode, and the crossed parts are sleeved on the hinge shafts and can be rotated around the hinge shafts to open or shrink simultaneously; the upper sections of the pair of pin sheets on each hinge shaft are respectively contacted and communicated with a pair of phase line conductors on two side walls of the inside of the shell.
According to the pin structure of the bus duct tapping unit, the pair of pin sheets which are arranged in an X-shaped cross mode are hinged on the insertion support through the hinge shaft, the arc-shaped spring piece between the lower sections of the pair of pin sheets is sunken in the initial state, so that the distance between the pair of pin sheets is smaller and is in the contracted state, the insertion support is convenient to insert and mount in the shell of the instant cabinet-level bus duct and moves to the plugging position along the longitudinal opening groove, the long screw rod of the jacking device is lifted up along the rotation of the nut to prop up the middle part of the arc-shaped spring piece, the two ends of the arc-shaped spring piece support the lower sections of the pair of pin sheets to open to two sides, and meanwhile, the upper sections of the pair of pin sheets are correspondingly opened to the two sides to be in mutual contact conduction with the pair of phase line conductors at the corresponding positions on the inner walls of the two sides of the shell, so that the plugging resistance is small, the plugging matching position is accurate, the contact conduction is reliable, the current tapping effect is good, the plugging contact position is not easy to wear, and the operation is convenient; the pair of pin sheets also need to be in a contracted state when being withdrawn, thus forming a relative interlocking structure and having high safety coefficient.
Drawings
Fig. 1 is a schematic plan view showing a pin structure of a busway tap unit in accordance with an embodiment of the present invention in contact with a set of phase conductors on the inside of a housing;
fig. 2 is a schematic plan view showing a pin structure of the busway tapping unit according to the present invention in contact with a set of phase conductors under the inner side of the housing;
fig. 3 is a schematic plan view of a pin structure ground row and a U-shaped ground pin of a busway tap unit according to an embodiment of the invention.
Detailed Description
As shown in the figure, the pin structure of the bus duct tapping unit comprises a plug-and-play cabinet-level bus duct shell 1 with a longitudinal open groove at the bottom, multiphase phase line conductors 2 are fixedly arranged on the inner side walls of two sides of the shell 1, an insertion bracket 8 which is made of insulating materials and can linearly move along the longitudinal open groove is arranged in the middle of an inner cavity of the shell 1, and the lower end of the insertion bracket 8 extends out of the shell; the middle part of the insertion bracket 8 is at least provided with one hinge shaft, the hinge shaft is hinged with a pair of pin sheets 3, the pin sheets 3 are arranged in an X-shaped and crossed manner, and the crossed part is sleeved on the hinge shaft and can be simultaneously rotated around the hinge shaft to be unfolded or contracted; the upper sections of the pair of pin sheets 3 extend to two sides and are respectively contacted and communicated with a pair of phase line conductors at corresponding positions on the inner walls of the two sides of the shell, a platy supporting spring 4 is connected between the lower sections of the pair of pin sheets 3, two ends of the supporting spring 4 respectively prop against the lower sections of the pair of pin sheets 3, and a jacking device is arranged below the middle parts of the supporting springs 4; the jacking device comprises a long screw rod 7, a hexagonal nut 6 is mounted on the upper middle part of the long screw rod 7 in a matched manner, the hexagonal nut 6 is clamped in a limiting groove in the insertion bracket 8 and can longitudinally move along the limiting groove, the upper end of the long screw rod 7 is propped against the middle part of the bottom surface of the supporting spring 4, and the bolt head at the lower end of the long screw rod 7 extends out of the insertion bracket 8; when the device is in an initial state, the arc-shaped spring piece between the lower sections of the pair of pin pieces is sunken, so that the distance between the pair of pin pieces is small and is in a contracted state, the plug-in bracket is conveniently plugged into the shell of the instant cabinet-level bus duct and moves to the plug-in position along the longitudinal opening groove, the long screw rod of the jacking device is rotationally lifted along the nut to prop up the middle part of the supporting spring, the two ends of the supporting spring are unfolded to the two sides, the lower sections of the pair of pin pieces are supported to be unfolded to the two sides, the upper sections of the pair of pin pieces are correspondingly unfolded to the two sides to be in mutual contact conduction with a pair of phase line conductors at corresponding positions on the inner walls of the two sides of the shell, the plug-in resistance is small, and the plug-in matching position is accurate.
The upper ends of the pair of pin sheets are respectively provided with a section of arc section, the pair of pin sheets are respectively contacted and conducted with the phase line conductors at the corresponding positions on the two sides of the shell through the arc sections, the current tapping effect is good, and the spliced contact parts are not easy to wear.
The supporting spring 4 comprises at least one pair of arc-shaped spring pieces, and the arc-shaped spring pieces have reliable deformation and can be elastically unfolded to reliably prop open the lower sections of the pair of pin pieces or elastically restored to enable the pair of pin pieces to be contracted and closed.
A slope-shaped supporting block 5 is arranged between the top end of the long screw rod 7 and the supporting spring, the top end of the supporting block 5 is an arc groove surface which can be matched with the arc spring piece, a threaded connection hole which can be fixedly connected to the top end of the long screw rod is formed in the middle of the bottom surface of the supporting block, the supporting structure is stable and reliable, and the supporting structure is supported in the middle of the bottom surface of the arc spring piece through the arc groove surface.
Insert 8 inside double-deck middle baffle that is provided with of support, double-deck middle baffle middle part has the through-hole that can supply long screw rod 7 to pass, and the double-deck middle baffle middle section separates through spacing rib and constitutes the spacing groove that can supply hexagonal nut 6 cartridge to insert the support inside, and hexagonal nut spacing cartridge is inside the spacing groove, and hexagonal nut keeps motionless when long screw rod is rotatory for long screw rod rises or descends along hexagonal nut, and resistance is little, convenient operation.
The middle part of the inner surface of the top end of the shell 1 is provided with a slot which extends longitudinally, the top end of the insertion support 8 is matched and limited outside two sides of the slot and can move longitudinally along the slot, and the inside of the slot is inserted with a grounding row 10 with a T-shaped section to form a PE phase conductor; the inverted omega-shaped grounding pin 11 is fixedly embedded in the top section of the insertion support 8, and the opening part of the inverted omega-shaped grounding pin 11 can be matched with the T-shaped grounding row 10 in a plug-in mode and can longitudinally move along the T-shaped grounding row, so that the grounding performance is good.
The outside of the U-shaped grounding pin 11 is provided with an inverted omega-shaped spring piece 12 which can support the U-shaped grounding pin to be tightly clamped on the T-shaped grounding row, and the grounding connection is stable and reliable.
The upper partition plate is arranged in the top section of the insertion support 8, the U-shaped mounting groove is formed in the middle of the upper partition plate, the inverted omega-shaped grounding pin is fixedly embedded in the U-shaped mounting groove, the installation operation is convenient, and the limiting support strength is high.
Specifically, four-phase conductors 2 are fixedly installed on two side walls inside the shell 1, the four-phase conductors are divided into an upper group and a lower group in pairs, an upper hinge shaft and a lower hinge shaft are arranged on the insertion support 8, a pair of pin sheets are respectively hinged on each hinge shaft, the pair of pin sheets on each hinge shaft are mutually crossed in an X shape, and the crossed part is sleeved on the hinge shaft and can be simultaneously rotated around the hinge shaft to be unfolded or contracted; the upper section of the pair of pin sheets on each hinge shaft is respectively contacted and conducted with a pair of phase line conductors on two side walls inside the shell, a long screw is connected below the pair of pin sheets contacted and conducted with the upper group of phase line conductors, and a short screw is connected below the pair of pin sheets contacted and conducted with the lower group of phase line conductors, so that the upper section and the lower section of the pin sheets are suitable for different height differences of the upper group of phase line conductors and the lower group of phase line conductors, the upper section and the lower section of the pin sheets are not interfered with each other, the plugging matching position is accurate, the contact conduction is reliable, the current tapping effect is good, and the operation is convenient.
According to the pin structure of the bus duct tapping unit, the pair of pin sheets which are arranged in an X-shaped cross mode are hinged on the insertion support through the hinge shaft, the arc-shaped spring piece between the lower sections of the pair of pin sheets is sunken in the initial state, so that the distance between the pair of pin sheets is smaller and is in the contracted state, the insertion support is convenient to insert and mount in the shell of the instant cabinet-level bus duct and moves to the plugging position along the longitudinal opening groove, the long screw rod of the jacking device is lifted up along the rotation of the nut to prop up the middle part of the arc-shaped spring piece, the two ends of the arc-shaped spring piece support the lower sections of the pair of pin sheets to open to two sides, and meanwhile, the upper sections of the pair of pin sheets are correspondingly opened to the two sides to be in mutual contact conduction with the pair of phase line conductors at the corresponding positions on the inner walls of the two sides of the shell, so that the plugging resistance is small, the plugging matching position is accurate, the contact conduction is reliable, the current tapping effect is good, the plugging contact position is not easy to wear, and the operation is convenient; the pair of pin sheets also need to be in a contracted state when being withdrawn, thus forming a relative interlocking structure and having high safety coefficient.
Claims (6)
1. The utility model provides a pin structure of bus duct tapping unit, includes that the bottom has the plug-in rack level bus duct casing of vertical open slot, fixed mounting has multiphase phase conductor on the inside wall of casing both sides, its characterized in that: an insertion bracket which is made of insulating materials and can linearly move along the longitudinal open slot is arranged in the middle of the inner cavity of the shell, and the lower end of the insertion bracket extends out of the shell; the middle part of the insertion bracket is at least provided with one hinge shaft, the hinge shaft is hinged with a pair of pin sheets, the pin sheets are arranged in an X-shaped and crossed manner, and the crossed part is sleeved on the hinge shaft and can be rotated around the hinge shaft to be unfolded or contracted simultaneously; the upper sections of the pair of pin sheets extend to two sides and are respectively contacted and communicated with a pair of phase line conductors at corresponding positions on the inner walls of the two sides of the shell, a platy supporting spring is connected between the lower sections of the pair of pin sheets, two ends of the supporting spring respectively prop against the lower sections of the pair of pin sheets, and a jacking device is arranged below the middle parts of the supporting springs; the jacking device comprises a long screw, a hexagonal nut is mounted on the upper middle part of the long screw in a matched manner, the hexagonal nut is clamped in a limiting groove in the insertion bracket and can longitudinally move along the limiting groove, the upper end of the long screw is propped against the middle part of the bottom surface of the supporting spring, and the bolt head at the lower end of the long screw extends out of the insertion bracket; the middle section of the double-layer middle partition plate is separated by a limiting rib to form a limiting groove for clamping a hexagonal nut in the inserting bracket; the middle part of the inner surface of the top end of the shell is provided with a slot extending longitudinally, the top end of the insertion support is matched and limited outside two sides of the slot and can longitudinally move along the slot, and a grounding row with a T-shaped section is inserted in the slot; the inverted omega-shaped grounding pins are fixedly embedded in the top section of the insertion support, and the opening parts of the inverted omega-shaped grounding pins can be matched with the T-shaped grounding row in a plug-in manner and can longitudinally move along the T-shaped grounding row; four-phase conductors are fixedly arranged on two side walls inside the shell, the four-phase conductors are opposite to each other, an upper hinge shaft and a lower hinge shaft are arranged on the insertion support, a pair of pin sheets are respectively hinged on each hinge shaft, the pair of pin sheets on each hinge shaft are arranged in an X-shaped and crossed mode, and the crossed parts are sleeved on the hinge shafts and can be rotated around the hinge shafts to open or shrink simultaneously; the upper sections of the pair of pin sheets on each hinge shaft are respectively contacted and communicated with a pair of phase line conductors on two side walls of the inside of the shell.
2. The pin structure of the busway tap unit of claim 1, wherein: the upper ends of the pair of pin sheets are respectively provided with a section of arc section, and the pair of pin sheets are respectively contacted and conducted with the phase line conductors at the corresponding positions on the two sides of the shell through the arc sections.
3. The pin structure of the busway tap unit of claim 1, wherein: the support spring includes at least one pair of arcuate spring tabs.
4. A pin structure of a busway tap according to claim 3, wherein: a slope-shaped supporting block is arranged between the top end of the long screw rod and the supporting spring, the top end of the supporting block is an arc groove surface which can be matched with the arc spring piece, and a threaded connection hole which can be matched and fixedly connected to the top end of the long screw rod is formed in the middle of the bottom surface of the supporting block.
5. The pin structure of the busway tap unit of claim 4, wherein: the outer side of the inverted-omega-shaped grounding pin is provided with an inverted-omega-shaped spring piece which can support the inverted-omega-shaped grounding pin to be tightly clamped on the T-shaped grounding row.
6. The pin structure of the busway tap unit of claim 5, wherein: an upper partition plate is arranged in the top section of the insertion support, a U-shaped mounting groove is formed in the middle of the upper partition plate, and the inverted omega-shaped grounding pin is fixedly embedded in the U-shaped mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565902.4A CN109473926B (en) | 2018-12-20 | 2018-12-20 | Pin structure of bus duct tapping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565902.4A CN109473926B (en) | 2018-12-20 | 2018-12-20 | Pin structure of bus duct tapping unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109473926A CN109473926A (en) | 2019-03-15 |
| CN109473926B true CN109473926B (en) | 2024-02-20 |
Family
ID=65676317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811565902.4A Active CN109473926B (en) | 2018-12-20 | 2018-12-20 | Pin structure of bus duct tapping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109473926B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146750B (en) * | 2020-01-06 | 2021-02-19 | 重庆拓达建设（集团）有限公司 | Quick-mounting junction box and mounting process thereof |
| CN115133483B (en) * | 2022-08-09 | 2023-07-04 | 鼎圣集团有限公司 | Bus duct with wire gathering and branching function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1427221A (en) * | 1973-05-23 | 1976-03-10 | Erco Leuchten | Electrical current distribution assemblies |
| JPH11262142A (en) * | 1998-03-10 | 1999-09-24 | Kyodo Ky Tec Corp | Plug-in contactor |
| CN106992482A (en) * | 2017-03-08 | 2017-07-28 | 突破电气（天津）有限公司 | Bus duct, bus-bar system and connection method |
| CN108173208A (en) * | 2016-12-07 | 2018-06-15 | 镇江凯勒电力科技有限公司 | A kind of bus duct |
| CN108808301A (en) * | 2018-07-26 | 2018-11-13 | 江苏华彤电气股份有限公司 | A kind of bus duct base pin with anti-heating function |
| CN209282777U (en) * | 2018-12-20 | 2019-08-20 | 威腾电气集团股份有限公司 | The pin configuration of bus duct tapping unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004096950A (en) * | 2002-09-03 | 2004-03-25 | Sumitomo Wiring Syst Ltd | Conductive material |
-
2018
- 2018-12-20 CN CN201811565902.4A patent/CN109473926B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1427221A (en) * | 1973-05-23 | 1976-03-10 | Erco Leuchten | Electrical current distribution assemblies |
| JPH11262142A (en) * | 1998-03-10 | 1999-09-24 | Kyodo Ky Tec Corp | Plug-in contactor |
| CN108173208A (en) * | 2016-12-07 | 2018-06-15 | 镇江凯勒电力科技有限公司 | A kind of bus duct |
| CN106992482A (en) * | 2017-03-08 | 2017-07-28 | 突破电气（天津）有限公司 | Bus duct, bus-bar system and connection method |
| CN108808301A (en) * | 2018-07-26 | 2018-11-13 | 江苏华彤电气股份有限公司 | A kind of bus duct base pin with anti-heating function |
| CN209282777U (en) * | 2018-12-20 | 2019-08-20 | 威腾电气集团股份有限公司 | The pin configuration of bus duct tapping unit |
Also Published As
| Publication number | Publication date |
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| CN109473926A (en) | 2019-03-15 |
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