CN110048287A - A kind of connection method of locomotive high-voltage cable connector - Google Patents
A kind of connection method of locomotive high-voltage cable connector Download PDFInfo
- Publication number
- CN110048287A CN110048287A CN201910151502.7A CN201910151502A CN110048287A CN 110048287 A CN110048287 A CN 110048287A CN 201910151502 A CN201910151502 A CN 201910151502A CN 110048287 A CN110048287 A CN 110048287A
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- Prior art keywords
- connector
- cable
- tension cable
- lubricating grease
- tension
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- 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
-
- 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
- H01R43/002—Maintenance of line connectors, e.g. cleaning
-
- 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
- H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing
-
- 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
- H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention belongs to locomotive high-voltage T-shaped joint of cable Joining Technology technical fields, disclose a kind of connection method of locomotive high-voltage cable connector, Step 1: the cleaning of high-tension cable T connector and inner cavity；Step 2: the lubrication of high-tension cable T connector insulating layer；Step 3: the lubrication of high-tension cable T connector inner cavity；Step 4: guaranteeing that high-tension cable T connector and connecting pin form uniform lubricating grease layer；Step 5: high-tension cable T connector and main transformer and cable are fixedly connected；The connection method of this locomotive high-voltage cable connector, substantially increases the stability of locomotive voltage, reduces the generation of drain conditions, has prevented the damage of locomotive electrical component, can be with effectively save power consumption 20%.
Description
Technical field
The present invention relates to locomotive high-voltage cable connector Joining Technology technical fields more particularly to a kind of locomotive high-voltage cable to connect
The connection method of head.
Background technique
Locomotive is the powered traction system for driving compartment walking, with China's high-speed rail and technology of track traffic it is continuous into
The high-speed rail technology of step and accumulation, China has certain occupation rate of market in international market, and the high-speed rail technology in China has obtained crowd
The approval of more international customers.HXD1 locomotive is High-power AC drives locomotive, has hauling ability superior, power is big.Stick benefit
With rate height, Acceleration of starting performance is good, high reliablity, the good feature of energy-saving and emission-reduction；Belong to Heavy-Haul Railway freight locomotive.
High-tension cable, which is mainly used for locomotive top side main circuit 25kV high-voltage electricity being distributed to locomotive main transformer, to be become
Pressure belongs to main circuit a part.25kV high-tension cable assembly includes 1 roof high-tension bushing, the high-tension cable that 1 root long degree is 9m
With 1 high-voltage cable joint (T connector), for the high-tension current in roof pantograph being guided on the main transformer at vehicle bottom,
Connection between its medium and high voltage cable and main transformer realizes there is that dismounting is convenient by T connector.
In the prior art if connecting bad between high-tension cable T connector and main transformer, locomotive voltage will lead to
Unstable and accelerating ability is bad, even results in the damage that electric leakage causes locomotive electrical component；Inventor is based in the prior art
Defect has developed a kind of connection method of locomotive high-voltage cable connector, can well solve problems of the prior art.
Summary of the invention
The purpose of the present invention is to solve above-mentioned problems of the prior art, provide a kind of locomotive high-voltage cable
The connection method of connector, the invention is scientific and reasonable, and operating procedure is simple, can well solve because high-tension cable T connector with
It connects bad between main transformer, will lead to locomotive voltage instability and accelerating ability is bad, even result in electric leakage and cause locomotive
The problem of damage of power components.
The present invention provides a kind of connection method of locomotive high-voltage cable connector:
Step 1: the cleaning of high-tension cable T connector and inner cavity: being that ≮ 95% alcohol is clear with dust-free paper (or moisture paper tissue papers) leaching concentration
Clean end insulating layer and T connector inner cavity；Natural air drying 15 minutes；
Step 2: the lubrication of high-tension cable T connector insulating layer: wearing medical gloves in end surface of insulating layer and uniformly apply one layer
Lubricating grease；
Step 3: the lubrication of high-tension cable T connector inner cavity: wearing medical gloves and uniformly applied in high-tension cable T connector inner cavity
One layer of lubricating grease；
Step 4: guaranteeing that high-tension cable T connector and connecting pin form uniform lubricating grease layer:, will be high according in step 3
Voltage cable T connector is inserted into connecting pin, the rotary high pressure cable T at 1/3 ~ 2/3 stroke of high-tension cable T connector sheath
Type joint one week, then extract cable；
Step 5: high-tension cable T connector and main transformer and cable are fixedly connected: by the lower part of high-tension cable T connector and electricity
The connection of cable alignment and fixation, while being fixedly connected at the upper left-hand end of high-tension cable T connector with main transformer A terminal.
Wherein Step 2: in three, silicone grease, which is maintained between solid and liquid critical point, to be advisable, and winter, spring, autumn can use 60 ~ 70
It spends water and heats silicone grease.
Wherein in step 5, installation is connected between high-tension cable T connector and cable: Step 1: with dust-free paper or moisture paper tissue papers
Soak concentration ≮ 95% alcohol cleaning cable head insulating layer and high-tension cable T connector inner cavity；Natural air drying 15 minutes；Step 2: wearing
Medical gloves uniformly applies one layer of lubricating grease at end insulating layer and high-tension cable T connector cable inlet；Lubricating grease
Being maintained between solid and liquid critical point is advisable, and winter, spring, autumn can heat silicone grease with 60 ~ 70 degree of water；Step 3: end is inserted
Enter in T connector, rotated T connector one week at 1/3 ~ 2/3 stroke, extracts cable, guarantee that lubricating grease smoothens；Step 4: again
It is inserted into high-tension cable T connector, confirms that cable connecting terminal centre bore and high-tension cable T connector inner cavity are concentric；Step 5: with
The fixed high-tension cable T connector of adhesive tape and cable, it is ensured that high-tension cable T connector and end do not generate displacement, and connect anti-
Electrostatic line；Step 6: being sealed in high-tension cable T connector sheath and T connector cable engaging portion using tack insulating tape, protect
Demonstrate,prove the leakproofness of high-tension cable T connector cable and high-tension cable T connector sheath.
Wherein in step 5, high-tension cable T connector cable is connect with main transformer: Step 1: with dust-free paper (or moisture paper tissue papers)
It soaks concentration ≮ 95% alcohol cleaning to clean on the surface of high-tension cable T connector, guarantees that its cleaning is dustless；Step 2: wearing Medical hand
It covering and uniformly applies one layer of lubricating grease in main transformer A terminal surfaces, lubricating grease, which is maintained between solid and liquid critical point, to be advisable, the winter,
Spring, autumn can heat silicone grease with 60 ~ 70 degree of water；Step 3: wearing medical gloves in the horizontal intracavitary uniform painting one of high-tension cable T connector
Layer lubricating grease, lubricating grease, which is maintained between solid and liquid critical point, to be advisable, and winter, spring, autumn can heat silicon with 60 ~ 70 degree of water
Rouge；Step 4: covering high-tension cable T connector on main transformer A terminal, and fixes and it is not allowed to skid off；Step 5: being added using band
Studs (long end of thread) is passed through T connector cut cable sub-aperture and pre-tighten by the S22mm sleeve of stock 4 ~ 5 to be buckled on A terminal；Step
Six, using torque spanner fix in position, Tightening moment 50N.m；One is uniformly applied on insulating plug surface Step 7: wearing medical gloves
Layer lubricating grease, lubricating grease, which is maintained between solid and liquid critical point, to be advisable, and winter, spring, autumn can heat silicon with 60 ~ 70 degree of water
Rouge；Insulating plug is pressed into simultaneously in the rear connecting hole of high-tension cable T connector, with S24mm sleeve and torque spanner fix in position；
Its Tightening moment is 50N.m；Step 8: seal plug fastening is connect on high-tension cable T connector, while by high-tension cable T-type
Head ground line, and it is with locomotive reliable, be fastenedly connected.
It is ≮ 95% alcohol cleaning cable head insulating layer and high pressure with dust-free paper or moisture paper tissue papers leaching concentration wherein in step 1
T-shaped joint of cable inner cavity；Natural air drying 15 minutes；The main purpose done so is to keep end insulating layer and high-voltage electricity
The cleaning of cable T connector inner cavity, while being fallen using the fiber that dust-free paper or moisture paper tissue papers can prevent above dust-free paper or moisture paper tissue papers
It falls in end insulating layer and high-tension cable T connector inner cavity, influences the energization performance of high-tension cable T connector and cable；
Simultaneously using the insulating layer of natural-wind dry end and high-tension cable T connector inner cavity, the safety of electricity consumption can be improved, such as
Fruit cable insulation head or high-tension cable T connector inner cavity are moist environment, be will lead between high-tension cable T connector and cable
Electrification is used in open circuit.
Wherein Step 2: in three, it is uniform in end insulating layer and high-tension cable T connector surface of internal cavity to wear medical gloves
Apply one layer of lubricating grease；The main purpose done so is to by coating lubricating grease, on the one hand reduce end and insert
Enter to the contact friction force in high-tension cable T connector sheath, improves the smoothness of installation connection procedure.On the other hand it can rise
To the sealing performance of end and high-tension cable T connector sheath interconnecting piece, its energization performance is improved.
Wherein in step 4, high-tension cable T connector is inserted into connecting pin, high-tension cable T connector 1/3 ~
Rotary high pressure T-shaped joint of cable one week, then extracts cable at 2/3 stroke；The main purpose done so is in order to by making electricity
Cable end rotates a circle at 1/3 ~ 2/3 stroke of high-tension cable T connector sheath, improves the uniformity of lubricating grease layer, a side
Face reduces the frictional force of end Yu high-tension cable T connector sheath, facilitates pair of end Yu high-tension cable T connector
Quasi- installation.On the other hand the leakproofness for improving end Yu high-tension cable T connector, improves end and high-tension cable T
The energization performance of type joint junction.
Wherein Step 2: in three, silicone grease, which is maintained between solid and liquid critical point, to be advisable, and winter, spring, autumn can use 60 ~ 70
It spends water and heats silicone grease；The main purpose done so is the critical point in order to make lubricating grease be in solid and liquid, because at this time
The viscosity of lubricating grease is maximum, and absorption, adhesion property are best, can guarantee that lubricating grease can be adhered to end insulating layer
In the inner cavity of high-tension cable T connector, lubricating grease is in solid state and will lead to and can not adhere to, if lubricating grease is in
The diluter state of liquid will also result in lubricating grease and can not adhere to, and reduce the viscosity of itself.
Beneficial effects of the present invention: the present invention provides a kind of connection method of locomotive high-voltage cable connector, the invention sections
It learns rationally, operating procedure is simple；The stability for substantially increasing locomotive voltage reduces the generation of drain conditions, has prevented machine
The damage of vehicle power components, can be with effectively save power consumption 20%.
Detailed description of the invention
Fig. 1 connects scheme of installation between high-tension cable T connector of the present invention and cable；
Fig. 2 is high-tension cable T connector cable of the present invention and main transformer connection schematic diagram；
Marked in the figure: 1, high-tension cable T connector, 2, cable, 3, high-tension cable T connector sheath, 4, main transformer A terminal,
5, studs, 6, insulating plug, 7, seal plug.
Specific embodiment
The present invention is described further below in conjunction with specific embodiment, these embodiments be merely to illustrate the present invention without
For limiting the scope of the invention.
The present invention provides a kind of connection methods of locomotive high-voltage cable connector:
Step 1: the cleaning of high-tension cable T connector and inner cavity: being that ≮ 95% alcohol is clear with dust-free paper (or moisture paper tissue papers) leaching concentration
Clean end insulating layer and T connector inner cavity；Natural air drying 15 minutes；
Step 2: the lubrication of high-tension cable T connector insulating layer: wearing medical gloves in end surface of insulating layer and uniformly apply one layer
Lubricating grease；Lubricating grease, which is maintained between solid and liquid critical point, to be advisable, and winter, spring, autumn can heat silicon with 60 ~ 70 degree of water
Rouge；
Step 3: the lubrication of high-tension cable T connector inner cavity: wearing medical gloves and uniformly applied in high-tension cable T connector inner cavity
One layer of lubricating grease；It is same as in step 2 lubricating grease be maintained between solid and liquid critical point and be advisable, winter, spring, autumn can
Silicone grease is heated with 60 ~ 70 degree of water；
Step 4: guaranteeing that high-tension cable T connector and connecting pin form uniform lubricating grease layer: by high-tension cable T connector
It is inserted into connecting pin, the rotary high pressure T-shaped joint of cable one week at 1/3 ~ 2/3 stroke of high-tension cable T connector sheath, so
After extract cable；
Step 5: high-tension cable T connector and main transformer and cable are fixedly connected: by the lower part of high-tension cable T connector and electricity
The connection of cable alignment and fixation, while being fixedly connected at the upper left-hand end of high-tension cable T connector with main transformer A terminal.
Installation is connected between embodiment one, high-tension cable T connector and cable
Step 1: soaking concentration ≮ 95% alcohol cleaning cable head insulating layer and high-tension cable T connector with dust-free paper (or moisture paper tissue papers)
Inner cavity；Natural air drying 15 minutes.
Step 2: wearing medical gloves uniformly applies one layer at end insulating layer and high-tension cable T connector cable inlet
Lubricating grease；Lubricating grease, which is maintained between solid and liquid critical point, to be advisable, and winter, spring, autumn can heat silicon with 60-70 degree water
Rouge.
Step 3: being rotated T connector one week at 1/3 ~ 2/3 stroke in end insertion T connector, extracting cable, guarantee profit
Sliding silicone grease smoothens.
Step 4: confirmation cable connecting terminal centre bore connects with high-tension cable T-type again insertable into high-tension cable T connector
Head inner cavity is concentric.
Step 5: fixing high-tension cable T connector and cable with adhesive tape, it is ensured that high-tension cable T connector and end are not
Displacement is generated, and connects antistatic line.
Step 6: being sealed in high-tension cable T connector sheath and T connector cable engaging portion using tack insulating tape, protect
Demonstrate,prove the leakproofness of high-tension cable T connector cable and high-tension cable T connector sheath.
Embodiment two, high-tension cable T connector cable are connect with main transformer
Step 1: cleaned with dust-free paper (or moisture paper tissue papers) leaching concentration ≮ 95% alcohol cleaning on the surface of high-tension cable T connector,
Guarantee that its cleaning is dustless.
One layer of lubricating grease is uniformly applied in main transformer A terminal surfaces Step 2: wearing medical gloves, lubricating grease is maintained at solid
It is advisable between liquid critical point, winter, spring, autumn can heat silicone grease with 60 ~ 70 degree of water.
Step 3: wearing medical gloves in high-tension cable T connector one layer of lubricating grease of horizontal intracavitary uniform painting, lubricating grease is protected
Holding is advisable between solid and liquid critical point, and winter, spring, autumn can heat silicone grease with 60 ~ 70 degree of water.
Step 4: covering high-tension cable T connector on main transformer A terminal, and fixes and it is not allowed to skid off.
Step 5: using the S22mm sleeve with extension bar that studs (long end of thread) is pre- across T connector cut cable sub-aperture
Tightly 4 ~ 5 button on A terminal.
Step 6: using torque spanner fix in position, Tightening moment 50N.m.
Uniformly apply one layer of lubricating grease on insulating plug surface Step 7: wearing medical gloves, lubricating grease be maintained at solid with
It is advisable between liquid critical point, winter, spring, autumn can heat silicone grease with 60 ~ 70 degree of water；Insulating plug is pressed into high-tension cable T-type simultaneously
In the rear connecting hole of connector, with S24mm sleeve and torque spanner fix in position；Its Tightening moment is 50N.m.
Step 8: seal plug fastening is grounded on high-tension cable T connector, while by high-tension cable T connector, and
It is with locomotive reliable, be fastenedly connected.
Claims (4)
1. a kind of connection method of locomotive high-voltage cable connector: it is characterized by: Step 1: high-tension cable T connector and inner cavity
Cleaning: with dust-free paper (or moisture paper tissue papers) leaching concentration be ≮ 95% alcohol cleaning cable head insulating layer and T connector inner cavity；Natural wind
It is 15 minutes dry；Step 2: the lubrication of high-tension cable T connector insulating layer: it is uniform in end surface of insulating layer to wear medical gloves
Apply one layer of lubricating grease；Step 3: the lubrication of high-tension cable T connector inner cavity: wearing medical gloves in high-tension cable T connector
One layer of lubricating grease is uniformly applied in chamber；Step 4: guaranteeing that high-tension cable T connector and connecting pin form uniform lubricating grease
Layer: according in step 3, high-tension cable T connector is inserted into connecting pin, the 1/3 ~ 2/ of high-tension cable T connector sheath
Rotary high pressure T-shaped joint of cable one week, then extracts cable at 3 strokes；Step 5: high-tension cable T connector and main transformer and electricity
Cable is fixedly connected: the lower part of high-tension cable T connector being connect with cable alignment and fixation, while in high-tension cable T connector
Upper left-hand end be fixedly connected with main transformer A terminal.
2. a kind of connection method of locomotive high-voltage cable connector according to claim 1, it is characterised in that: Step 2: three
In, silicone grease, which is maintained between solid and liquid critical point, to be advisable, and winter, spring, autumn can heat silicone grease with 60 ~ 70 degree of water.
3. a kind of connection method of locomotive high-voltage cable connector according to claim 1, it is characterised in that: in step 5,
Installation is connected between high-tension cable T connector and cable: Step 1: cleaning electricity with dust-free paper or moisture paper tissue papers leaching concentration ≮ 95% alcohol
Cable end insulating layer and high-tension cable T connector inner cavity；Natural air drying 15 minutes；It insulate Step 2: wearing medical gloves in end
One layer of lubricating grease is uniformly applied at layer and high-tension cable T connector cable inlet；It is critical with liquid that lubricating grease is maintained at solid
It is advisable between point, winter, spring, autumn can heat silicone grease with 60 ~ 70 degree of water；Step 3: in end insertion T connector, in 1/3 ~ 2/3 row
It is rotated T connector one week at journey, extracts cable, guarantee that lubricating grease smoothens；Step 4: again insertable into high-tension cable T connector, really
Recognize cable connecting terminal centre bore and high-tension cable T connector inner cavity is concentric；It is connect Step 5: fixing high-tension cable T-type with adhesive tape
Head and cable, it is ensured that high-tension cable T connector and end do not generate displacement, and connect antistatic line；Step 6: in high-voltage electricity
Cable T connector sheath and T connector cable engaging portion are sealed using tack insulating tape, guarantee high-tension cable T connector cable with
The leakproofness of high-tension cable T connector sheath.
4. a kind of connection method of locomotive high-voltage cable connector according to claim 1, it is characterised in that: in step 5,
High-tension cable T connector cable is connect with main transformer: Step 1: being existed with dust-free paper (or moisture paper tissue papers) leaching concentration ≮ 95% alcohol cleaning
The surface of high-tension cable T connector is cleaned, and guarantees that its cleaning is dustless；Step 2: it is uniform in main transformer A terminal surfaces to wear medical gloves
One layer of lubricating grease is applied, lubricating grease, which is maintained between solid and liquid critical point, to be advisable, and winter, spring, autumn can be added with 60 ~ 70 degree of water
Warm silicone grease；Step 3: wearing medical gloves in high-tension cable T connector one layer of lubricating grease of horizontal intracavitary uniform painting, lubricating grease is protected
Holding is advisable between solid and liquid critical point, and winter, spring, autumn can heat silicone grease with 60 ~ 70 degree of water；Step 4: by high-tension cable T
Type joint covers on main transformer A terminal, and fixes and it is not allowed to skid off；Step 5: using the S22mm sleeve with extension bar by double end
Stud (long end of thread) passes through T connector cut cable sub-aperture and pre-tightens 4 ~ 5 button on A terminal；Step 6: being fixed to using torque spanner
Position, Tightening moment 50N.m；One layer of lubricating grease is uniformly applied on insulating plug surface Step 7: wearing medical gloves, lubricating grease is protected
Holding is advisable between solid and liquid critical point, and winter, spring, autumn can heat silicone grease with 60 ~ 70 degree of water；Insulating plug is pressed into simultaneously high
In the rear connecting hole of voltage cable T connector, with S24mm sleeve and torque spanner fix in position；Its Tightening moment is 50N.m；Step
Rapid eight, seal plug fastening is grounded on high-tension cable T connector, while by high-tension cable T connector, and with locomotive may be used
It leans on, be fastenedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910151502.7A CN110048287A (en) | 2019-02-28 | 2019-02-28 | A kind of connection method of locomotive high-voltage cable connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910151502.7A CN110048287A (en) | 2019-02-28 | 2019-02-28 | A kind of connection method of locomotive high-voltage cable connector |
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| Publication Number | Publication Date |
|---|---|
| CN110048287A true CN110048287A (en) | 2019-07-23 |
Family
ID=67274344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910151502.7A Pending CN110048287A (en) | 2019-02-28 | 2019-02-28 | A kind of connection method of locomotive high-voltage cable connector |
Country Status (1)
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| CN (1) | CN110048287A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382904A (en) * | 2020-12-09 | 2021-02-19 | 安徽康泰电气有限公司 | Connection method of locomotive high-voltage cable connector |
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2019
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| JP2015146697A (en) * | 2014-02-03 | 2015-08-13 | 株式会社三英社製作所 | Terminal conversion adaptor for underground line apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382904A (en) * | 2020-12-09 | 2021-02-19 | 安徽康泰电气有限公司 | Connection method of locomotive high-voltage cable connector |
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Application publication date: 20190723 |
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| RJ01 | Rejection of invention patent application after publication |