CN106057444A - Design method for power transformer low voltage side outlet apparatus - Google Patents
Design method for power transformer low voltage side outlet apparatus Download PDFInfo
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- CN106057444A CN106057444A CN201610351809.8A CN201610351809A CN106057444A CN 106057444 A CN106057444 A CN 106057444A CN 201610351809 A CN201610351809 A CN 201610351809A CN 106057444 A CN106057444 A CN 106057444A
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- columnar part
- connecting column
- low
- power transformer
- hole
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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
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
- H01R11/05—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations having different types of direct 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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
- H01R4/42—Clamping area to one side of screw only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Non-Insulated Conductors (AREA)
Abstract
The invention discloses a design method for a power transformer low voltage side outlet apparatus, and belongs to the field of power equipment. The design method for the outlet apparatus, disclosed by the invention, comprises the steps of providing a clamping end matched with a low-voltage connection pole and a connecting end matched with a power busbar, and enabling the clamping end and the connecting end to be integrally formed; and arranging a connecting column at the connecting end, enabling the connecting column to be partially embedded in the connecting end and to be in interference fit with the connecting end, arranging a first conductive columnar part in interference fit with the power busbar on the connecting column, coaxially arranging a second conductive columnar part in the first columnar part, enabling the first columnar part to be in interference fit with the second columnar part, and enabling a thermal expansion coefficient of the second columnar part to be greater than that of the first columnar part. The design method disclosed by the invention has the following beneficial effects: 1, more conductive areas are generated under the same lap length, so that the current density is reduced and low temperature rise of the connecting end is realized; 2, the busbar consumption is reduced and resources are saved; and 3, an electric clearance is expanded or a safety distance is increased, and the electric safety of the equipment is improved.
Description
Technical field
The present invention relates to field of electrical equipment, be specifically related to the design side of a kind of low-tension side of power transformer outgoing line device
Method.
Background technology
In the power distribution room of factory, the union end of low-tension side of power transformer generally uses power bus-bar directly to couple, electricity
Power busbar is directly overlapped on union end, and union end couples the generally overlapping splicing processes of employing with power bus-bar, uses bolt the most again
Fastening.Such as the upper semisection of Fig. 8, such coupling method needs overlapping with outfan for busbar certain length, so that the electricity of contact surface
Current density maintains in certain limit value, so that the temperature rise of connection place meets relevant criterion.In order to make connection place temperature rise low, logical
Often need to increase the length that busbar is overlapping with terminal, make contact area increase, and then make the electric current density of contact surface reduce, finally
Connection place is made to have relatively low temperature rise.And increase overlap length and can strengthen the consumption of busbar, and then increase manufacturing cost.Fastening is used
Bolt the electric clearance between conductive component and non conductive component or safe distance can be made to reduce, in order to make electric clearance or
Safe distance keeps constant, needs to strengthen the spacing between outfan and non conductive component, and strengthens spacing and necessarily cause transformation
Device takes up room change greatly.How to increase contact area and to make connection place temperature rise low, but do not reduce electric clearance, and do not increase connection
The place of connecing takes up room.
Summary of the invention
It is an object of the invention to solve the problems referred to above, and the design of a kind of low-tension side of power transformer outgoing line device is provided
Method.
To this end, the present invention provides the method for designing of a kind of low-tension side of power transformer outgoing line device, it includes providing with low
The union end that the bare terminal end that crimping terminal coordinates coordinates with power bus-bar, makes bare terminal end one-body molded with union end.At union end
On connecting column is set, make connecting column be partially submerged into union end and with union end interference fit, connecting column is arranged female with electric power
First columnar part of the conduction of row's interference fit, is coaxially disposed second columnar part with electric conductivity in the first columnar part, makes
First columnar part and the second columnar part interference fit, be arranged at the second columnar part inside the first columnar part, make the second columnar part
Coefficient of thermal expansion more than the coefficient of thermal expansion of the first columnar part.
Advantageously, the resistivity resistivity more than the first columnar part of the second described columnar part is made.
Specifically, the material of the second described columnar part is set to aluminum or aluminium alloy, by the material of the first columnar part
It is set to copper or copper alloy.
Preferably, the ratio of the external diameter of the second described columnar part and the external diameter of the first columnar part is set to 0.5-0.8.
Specifically, the second columnar part is set to solid construction, the first columnar part is set to hollow structure, make the second post
The first columnar part is run through in shape portion.
Advantageously, being coaxially arranged with the second through hole inside connecting column, the outer cylinder at connecting column is radially arranged first
Through hole, makes the first through hole and the connection of the second through hole, and the first through hole is arranged at the axial middle part of connecting column.
Beneficial effect
Owing to the method for designing of low-tension side of power transformer outgoing line device disclosed by the invention is that union end uses the connection of docking
The mode that connects couples with power bus-bar, and relative to existing overlapping overlapping mode, it can bring following beneficial effect.
The most identical lap of splice produces more conductive area, and then reduces electric current density, it is achieved the low-temperature-rise of connection place.
2., without busbar being carried out overlapping overlap joint, reducing the consumption of busbar, having saved resource.
3., owing to eliminating fastening bolt and nut, so increasing electric clearance or safe distance, improve equipment
Electrical security.
4. owing to eliminating fastening bolt and nut, so the size of connection place diminishes, i.e. connection place and non-conductive portion
Distance between part becomes big.
Accompanying drawing explanation
In explanation below in reference to the accompanying drawing embodiment to being given as non-limiting example, the present invention and superiority thereof
Will be better understood, accompanying drawing is as follows:
Fig. 1 is the axonometric chart of the power transformer using existing connecting mode, and wherein power bus-bar overlaps；
Fig. 2 is the partial enlarged drawing in Fig. 1 at A；
Fig. 3 is the axonometric chart that outgoing line device disclosed by the invention applies to power transformer, and wherein power bus-bar is to connecting；
Fig. 4 is the partial enlarged drawing in Fig. 3 at B；
Fig. 5 is the axonometric chart that outgoing line device disclosed by the invention applies to power transformer；
Fig. 6 is the partial enlarged drawing in Fig. 5 at C；
Fig. 7 is the three-dimensional exploded view in Fig. 3 at B；
Fig. 8 is overlapping mode size comparison's figure with the docking mode of outgoing line device disclosed by the invention of existing outgoing line device；
Fig. 9 is the axonometric chart of connecting column disclosed by the invention；
Figure 10 is the perspective cut-away view of Fig. 9；
Figure 11 is the exploded perspective view of Fig. 9；
Figure 12-13 is the arrangement schematic diagram of connecting column disclosed by the invention；
Figure 14 is the axonometric chart of power bus-bar；
Figure 15 is the axonometric chart of low-tension side of power transformer outgoing line device disclosed by the invention.
Description of reference numerals
1. the first columnar part；2. the second columnar part；3. front；4. the back side；5. end face；6. the first through hole；7. the second through hole；
8. bare terminal end；9. union end.
Detailed description of the invention
R in present specification represents radius.
As shown in Figure 6 and Figure 15, being the axonometric chart of low-tension side of power transformer outgoing line device disclosed by the invention, it has
The union end 9 that the bare terminal end 8 coordinated with low tension terminal coordinates with power bus-bar, bare terminal end 8 is one-body molded with union end 9.Connection
Connect end and 9 be provided with connecting column, connecting column be partially submerged into union end 9 and with union end 9 interference fit, embedded length is for coupling column length
The half of degree, the lower half of connecting column embeds union end 9, and connecting column is fastened by the pin in union end 9 front with both union ends 9
Couple.
As it is shown in figure 5, be the outgoing line device disclosed by the invention axonometric chart that applies to power transformer, by outgoing line device
Bare terminal end 8 is inserted in the binding post of low-tension side of power transformer, and with screw bolt and nut, the bare terminal end 8 of outgoing line device is fastened on electricity
On the low tension terminal of power transformator.
As shown in Figure 3-4, the pre-manufactured hole on power bus-bar is inserted in the connecting column on union end 9, power bus-bar with couple
The end face laminating of post interference fit, the end face of power bus-bar and union end 9, the pin in power bus-bar front is by connecting column and electric power
The fastening of both busbars couples, and such connecting mode is defined as docking.
As it is shown in figure 1, be the axonometric chart of the power transformer using existing connecting mode, the union end of low-pressure side and electric power
The connecting mode of busbar uses overlapping overlapping mode, after power bus-bar and union end overlap certain length, then uses bolt
The two being fastened with nut, such connecting mode is defined as overlap joint, as shown in Figure 2.
As shown in Figure 8, it is the docking mode of overlapping mode and outgoing line device disclosed by the invention of existing outgoing line device
Size comparison schemes, and the first half is the union end 9 overlapping mode with power bus-bar of existing outgoing line device, and lower half is that the present invention is public
The union end 9 of the outgoing line device opened and the docking mode of power bus-bar, in figure the solid line on right side be in order to calculate electric clearance or
Person's safe distance and the boost line that designs.In order to strengthen the contrast effect of two kinds of connecting modes, connecting mode disclosed by the invention
It is set directly at the lower section of existing connecting mode.Two kinds of connecting modes the lap of splice the same, be all L5, be presented as: existing
Power bus-bar under connecting mode is L5 with the overlap length of union end 9, the connecting column under connecting mode disclosed by the invention
Length is also L5.The directly perceived change that two kinds of connecting modes bring is exactly the significant change of relative dimensions, and L1 is existing connecting mode
Under electric clearance or safe distance, L2 is the electric clearance under connecting mode disclosed by the invention or safe distance, L3
Being that the connection place under existing connecting mode takies width, L4 is that the connection place under connecting mode disclosed by the invention takies width.
Can visually see from figure: L2 is significantly greater than L1, the size of increase about busbar thickness adds bolt tail and highlights nut
Height+height of nut.L4 is significantly less than L3, and the size of reduction about busbar thickness adds bolt head height and adds height of nut
Add bolt tail and highlight the height of nut.Therefore, the factor (electric clearance or safe distance) that power equipment is favourable is obtained
Improve, and factor disadvantageous to power equipment (connection place takes up room) reduced.
As it is shown in figure 9, a kind of connecting column disclosed by the invention, it has columned profile, and end is provided with convenient dress
The chamfering joined.
As shown in Figure 10, the second columnar part 2, the first columnar part 1 and the second columnar part 2 it are coaxially disposed in the first columnar part 1
Interference fit.The material of the first columnar part 1 of connecting column is copper, and the material of the second columnar part 2 is aluminum.
As shown in figure 11, the first columnar part 1 has the structure of hollow, and the second columnar part 2 runs through the first columnar part 1, and second
The ratio of the external diameter of columnar part 2 and the external diameter of the first columnar part 1 is 0.5-0.8.First and second columnar part 1,2 all has electric conductivity,
The coefficient of thermal expansion of the second columnar part 2 is more than the first post more than the coefficient of thermal expansion of the first columnar part 1, the resistivity of the second columnar part 2
The resistivity in shape portion 1.
After connecting column is assemblied in union end 9 and power bus-bar, pre-due to the first columnar part 1 and union end 9 and busbar
Drilling interference fit, so, the first columnar part 1 and union end 9 and busbar fit tightly, and the first columnar part 1 of connecting column is abundant
Carrying electric current.Due to the first columnar part 1 and the second columnar part 2 also interference fit, so the first columnar part 1 and the second columnar part 2
Also fitting tightly, the second columnar part 2 the most fully carries electric current.Therefore, the heat effect of the first columnar part 1 and the second columnar part 2 can
To give full play to, owing to the resistivity of the second columnar part 2 is more than the resistivity of the first columnar part 1, so the temperature of the second columnar part 2
Degree can be higher than the first columnar part 1, owing to the coefficient of thermal expansion of the second columnar part 2 is more than the coefficient of thermal expansion of the first columnar part 1, therefore,
In the case of temperature and coefficient of thermal expansion are the most relatively high, the radially enlarged phenomenon of the second columnar part 2 can be significantly greater than the first column
The radially enlarged phenomenon in portion 1, therefore the second columnar part 2 can fit tightly the first columnar part 1 and apply radially to the first columnar part 1
Outside pressure, thus makes the radial dimension of the first columnar part 1 the most outwards become greatly, ultimately results in the first columnar part 1 and union end 9
And the pre-manufactured hole of power bus-bar more fits tightly, the most also radially outer pressure, i.e. connecting column are provided to pre-manufactured hole and couple
Pressure ratio connecting column between end 9 and busbar is bigger when just assembling, and increases contact pressure and can also make the temperature rise of contact site
Reduce.
As can be seen here, the coupling of interference fit, the coupling of resistivity and the coefficient of thermal expansion between each feature couples reducing
End 9 has obvious action with the temperature rise of busbar connection place, and the effect between three is complementary, interference fit originally
Make resistivity and coefficient of thermal expansion have the basis played a role, and the effect that resistivity and coefficient of thermal expansion produce exacerbated
It is full of cooperation, finally so that the contact pressure of connection place strengthens.
As shown in figure 12, cross section is foursquare power bus-bar, and centre is provided with a pre-manufactured hole receiving connecting column,
Pre-manufactured hole circumference is R to the distance of bus bar edge, and busbar width is L6.When using existing overlapping splicing processes to couple, connection place
Conductive area be
S1=L6xL5=(R+2R+R) xL5=4RxL5(L5 is the lap of splice, as shown in Figure 8)
And when using connecting column to couple, the conductive area of connection place is
S2=2πRxL5
Therefore,
S2: S1=2πR: 4R=π/2≈1.57
So, use the mode of connecting column overlap joint can obtain more contact area.Obviously, the condition of mechanical strength is being met
Under, increase the diameter of pre-manufactured hole, reduce hole back gauge and can obtain bigger contact area.
As shown in figure 13, cross section is rectangular power bus-bar, and centre arranges 3 pre-manufactured holes receiving connecting column, in advance
Drilling circumference is R to the distance of bus bar edge, and the beeline between each hole is R, and busbar width is L6.When using existing overlap
When splicing processes couples,
The conductive area of connection place is
S1=L6xL5=(4R+3x2R)xL5=10RxL5
And when using connecting column to couple, the conductive area of connection place is
S2=3x2πRxL5=6πRxL5
Therefore,
S2: S1=6πR: 10R=3π/5≈1.884
So, use the mode of connecting column overlap joint can obtain more contact area.Obviously, the condition of mechanical strength is being met
Under, increase the diameter of pre-manufactured hole, reduce hole back gauge and can obtain bigger contact area.
Therefore, connecting column disclosed by the invention creates the good effect of two aspects, and one is the increase in contact pressure, and two
Being to have increased considerably conductive area, under the common effect of the two active factor, the temperature rise of connection place is greatly lowered, real
Show the purpose of the present invention.
As it is shown in fig. 7, outgoing line device disclosed by the invention applies to power transformer, the bare terminal end 8 of outgoing line device is inserted in
The binding post of low-tension side of power transformer, and with screw bolt and nut, the bare terminal end 8 of outgoing line device is fastened on power transformer
On low tension terminal.Union end 9 is provided with connecting column, connecting column be partially submerged into union end 9 and with union end 9 interference fit, embedding
Entering the half of a length of connecting column length, the lower half of connecting column embeds union end 9, and the pin in union end 9 front is by connecting column
Couple with the fastening of both union ends 9.Before connecting column is assemblied in union end 9, first at the end face 5 of union end 9 along the length of outfan
Degree direction processes 3 pre-manufactured holes receiving connecting column, and the diameter of pre-manufactured hole is slightly less than the external diameter of connecting column, makes connecting column with prefabricated
Hole interference fit diametrically；The degree of depth of the pre-manufactured hole connecting column length slightly larger than 0.5 times, after pre-manufactured hole processes, will couple
The half length of post is inserted in pre-manufactured hole, makes the first through hole in the middle part of connecting column be at end face 5, from the front 3 of union end 9
Vertical processing, for assembling the through hole of pin, makes through hole run through front 3 and the back side 4 of union end 9, and runs through connecting column simultaneously,
The axis of through hole and the axes intersect of connecting column, coupled the fastening of both union end 9 and connecting column by pin.
Before power bus-bar is assemblied in union end 9, first the end face 5 at power bus-bar processes 3 in advance along busbar length direction
Drilling, the diameter of pre-manufactured hole is slightly less than the external diameter coupling pillar, makes connecting column and pre-manufactured hole interference fit diametrically；Pre-manufactured hole
The degree of depth slightly larger than the connecting column length of 0.5 times, after pre-manufactured hole processes, the pre-manufactured hole on power bus-bar is inserted in union end 9
On the connecting column that reveals, until the end face 5 of the end face 5 of power bus-bar and union end 9 is fitted, from the front 3 of power bus-bar
Vertical processing, for assembling the through hole of pin, makes through hole run through front 3 and the back side 4 of power bus-bar, and runs through connecting column simultaneously,
The axis of through hole and the axes intersect of connecting column, coupled the fastening of both power bus-bar and connecting column by pin, finally realize
The fastening of power bus-bar and union end 9 couples.
After union end 9 and power bus-bar docking, make connecting column and pre-manufactured hole matched in clearance in the axial direction, beneficially union end
Being close to of the end face of 9 and the end face of power bus-bar, the head of pre-manufactured hole is machined with the chamfering of convenient installation.Due to hole and pin mistake
It is full of cooperation, after pin assembling puts in place, union end 9 and mutual the moving axially of power bus-bar can be limited, finally make union end
9, connecting column, power bus-bar, pin firmly couples together.
As shown in figure 14, in order to distinguish each face of busbar and union end 9, end face 5 be defined as with busbar (or couple
End 9) thickness and width composition face, i.e. in Figure 14 identify 5 face.Front and back be defined as with busbar (or couple
End 9) width and length composition face, i.e. in figure identify 3,4 face, 3 is front, and 4 is the back side.
As shown in Figure 10, the inside of the second columnar part 2 is coaxially arranged with the second through hole 7, and the first columnar part 6 has hollow
Structure, the second columnar part 2 runs through the first columnar part 1, and the outer cylinder of the first columnar part 1 is radially arranged the first through hole 6, and first passes through
Perforation 6 connects with the second through hole 7, and the first through hole 6 is positioned at the axial middle part of the first columnar part 1.
Setting due to through hole 6,7 so that connecting column is during the pre-manufactured hole inserting union end 9, in pre-manufactured hole
Air can successfully discharge from the second through hole 7, and then connecting column can successfully be assembled put in place, work as power bus-bar
When being inserted in already installed connecting column, the air in the pre-manufactured hole of power bus-bar can be smoothly through the second through hole 7 from
First through hole 6 is discharged, and then the second busbar can be assembled smoothly put in place.
Embodiment two
The material of the first columnar part 1 in embodiment one is changed to copper alloy, and the material of the second columnar part 2 changes to aluminum and closes
Gold, owing to the hardness of alloy is more relatively high, first can preserve a period of time (5 points under low temperature environment (5 degree) by the second columnar part 2
Clock), and the first columnar part 1 preserves a period of time (5 minutes) under hot environment (80 degree), by effect of expanding with heat and contract with cold, can make
The internal diameter of the first columnar part 1 slightly becomes big, and the external diameter of the first columnar part 1 slightly diminishes, and then easily by the second columnar part 2
Being assembled in the first columnar part 1, after the connecting column prepared to be installed recovers room temperature, the first columnar part 1 and the second columnar part 2 can be real
Existing interference fit.The diameter of connecting column disclosed by the invention and length have different size specification, to adapt to different busbar size
Or the needs of union end 9 size.
Claims (6)
1. a method for designing for low-tension side of power transformer outgoing line device, it includes providing the clamping coordinated with low tension terminal
The union end (9) that end (8) coordinates with power bus-bar, makes bare terminal end (8) one-body molded with union end (9)；It is characterized in that,
Union end (9) arranges connecting column, make connecting column be partially submerged into union end (9) and with union end (9) interference fit, on connecting column
Setting and first columnar part (1) of the conduction of power bus-bar interference fit, be coaxially disposed in the first columnar part (1) and have conduction
Property the second columnar part (2), make the first columnar part (1) and the second columnar part (2) interference fit, by the second columnar part (2) arrange
Internal in the first columnar part (1), make the coefficient of thermal expansion coefficient of thermal expansion more than the first columnar part (1) of the second columnar part (2).
The method for designing of a kind of low-tension side of power transformer outgoing line device the most according to claim 1, it is characterised in that make
The resistivity of described the second columnar part (2) is more than the resistivity of the first columnar part (1).
The method for designing of a kind of low-tension side of power transformer outgoing line device the most according to claim 2, it is characterised in that will
The material of described the second columnar part (2) is set to aluminum or aluminium alloy, the material of the first columnar part (1) is set to copper or
Copper alloy.
The method for designing of a kind of low-tension side of power transformer outgoing line device the most according to claim 1, it is characterised in that will
The ratio of the external diameter of described the second columnar part (2) and the external diameter of the first columnar part (1) is set to 0.5-0.8.
The method for designing of a kind of low-tension side of power transformer outgoing line device the most according to claim 4, it is characterised in that will
Second columnar part (2) is set to solid construction, and the first columnar part (1) is set to hollow structure, makes the second columnar part (2) run through
First columnar part (1).
The method for designing of a kind of low-tension side of power transformer outgoing line device the most according to claim 4, it is characterised in that
Being coaxially arranged with the second through hole (7) inside connecting column, the outer cylinder at connecting column is radially arranged the first through hole (6), makes
Pass through aperture (7) connects with the second through hole (6), and the first through hole (6) is arranged at the axial middle part of connecting column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351809.8A CN106057444A (en) | 2016-05-24 | 2016-05-24 | Design method for power transformer low voltage side outlet apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351809.8A CN106057444A (en) | 2016-05-24 | 2016-05-24 | Design method for power transformer low voltage side outlet apparatus |
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| CN106057444A true CN106057444A (en) | 2016-10-26 |
Family
ID=57174379
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| CN201610351809.8A Pending CN106057444A (en) | 2016-05-24 | 2016-05-24 | Design method for power transformer low voltage side outlet apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420355A (en) * | 2020-11-11 | 2021-02-26 | 广东电网有限责任公司 | Wiring terminal for power transformer |
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| CN2049395U (en) * | 1989-01-05 | 1989-12-13 | 东方电力金具公司 | Changeover contact for power transformer screw leading-out terminals |
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Application publication date: 20161026 |
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