CN111613427A - Split type current transformer convenient to installation - Google Patents
Split type current transformer convenient to installation Download PDFInfo
- Publication number
- CN111613427A CN111613427A CN202010384127.3A CN202010384127A CN111613427A CN 111613427 A CN111613427 A CN 111613427A CN 202010384127 A CN202010384127 A CN 202010384127A CN 111613427 A CN111613427 A CN 111613427A
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- China
- Prior art keywords
- lower body
- current transformer
- upper body
- split type
- type current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- 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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
- H01F2038/305—Constructions with toroidal magnetic core
Abstract
The invention relates to a split type current transformer convenient to install, which comprises a transformer body, wherein the transformer body comprises an upper body and a lower body, the upper body and the lower body are oppositely combined and form a through hole along the lateral direction, the upper body and the lower body are respectively composed of semi-annular iron cores, the two iron cores are wound with coils and connected through a lead, the lead is positioned at one side of the upper body and the lower body, and a first connecting mechanism for opening or closing the upper body and the lower body is arranged between the upper body and the lower body; two sides of the bottom end of the lower body are symmetrically provided with second connecting mechanisms clamped with the mounting plate respectively; one side of the lower body is provided with a wiring terminal. According to the invention, the upper body and the lower body which are connected and involutory through the first connecting mechanism and the second connecting mechanism are arranged on the lower body, so that the current transformer can be installed in a charged manner, and is convenient to install and disassemble, high in stability and long in service life.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a split type current transformer convenient to install.
Background
A current transformer is an important device in an electric power system manufactured according to the principle of electromagnetic induction. Current current transformer is mostly the loop configuration, and the inside iron core of mutual-inductor also is corresponding loop configuration, and the alternating current that alternating current transformer during operation iron core passed produces the magnetic field of reversal in the iron core, and the magnetic field forms the loop in the iron core, and the magnetic field of reversal and then produce the electric current of reversal in the wire that encircles the iron core, has just so realized the measurement to the alternating current that passes the mutual-inductor.
The whole current transformer that is cyclic annular, need embolia the primary current that is inducted when the installation, when central conductor both ends are fixed, or central wire fixed point is far away from current transformer, in order to guarantee the security, need carry out the outage installation, this greatly reduced installation and efficiency of software testing. Meanwhile, when the existing current transformer is installed, a threaded hole needs to be formed in the installation plate, and the current transformer is installed on the installation plate through a bolt. However, in a limited space, the operation is complicated due to the screw holes and the mounting bolts, and the operation and the mounting are inconvenient.
Disclosure of Invention
The invention aims to provide a split type current transformer convenient to mount, which can be mounted in an electrified way, is convenient to mount and dismount, and has high stability and long service life.
The above object of the present invention is achieved by the following technical solutions:
a split type current transformer convenient to mount comprises a transformer body, wherein the transformer body comprises an upper body and a lower body, the upper body and the lower body are oppositely combined and form a through hole along the lateral direction, the upper body and the lower body are respectively composed of semi-annular iron cores, coils are wound on the two iron cores and connected through a lead, the lead is positioned on one side of the upper body and one side of the lower body, and a first connecting mechanism for opening or closing the upper body and the lower body is arranged between the upper body and the lower body; two sides of the bottom end of the lower body are symmetrically provided with second connecting mechanisms clamped with the mounting plate respectively; and one side of the lower body is provided with a wiring terminal connected with the coil.
By adopting the technical scheme, the separated upper body and the lower body can be installed in a combined manner, and the performance of the mutual inductor is not influenced; when the mutual inductor body is installed, the mutual inductor body can be installed in an electrified way, and the central conductor does not need to be disassembled, so that the mutual inductor body is convenient and quick to install and disassemble; set up second connection structure, can convenient and fast ground with mutual-inductor body joint on the mounting panel, need not to set up the screw hole on the mounting panel, easy to assemble saves installation time.
The invention is further configured to: the first connecting mechanism comprises a hinged part which is positioned on one side of the through hole and is connected with the upper body and the lower body, and the other side of the through hole is provided with an inserting part which can close or open the upper body and the lower body.
By adopting the technical scheme, the upper body and the lower body are not required to be completely separated, after the insertion part is unlocked, the upper body and the lower body are separated on one side of the insertion part through the hinge part, so that the central conductor is conveniently installed in the through hole, and the mutual inductor body is more convenient and rapid to install.
The invention is further configured to: the hinge part comprises a hinge block fixedly connected with one side of the upper body, the lower body is provided with a hinge ring matched with the hinge block, and the hinge block is pivoted with the hinge ring through a hinge shaft; the grafting portion includes the outer lug that extends of body opposite side, the lug top links firmly the supporting seat, horizontal support bar is worn to establish by the supporting seat, the bracing piece links firmly with the supporting seat, spring and joint board are established to the cover respectively from inside to outside on the bracing piece of supporting seat both sides, the both ends of bracing piece link firmly the link stopper respectively, be equipped with the logical groove corresponding with the joint board on the last lug of supporting seat both sides respectively, logical groove is worn to establish by the joint board, the body opposite side is equipped with the lower lug that closes with the lug relatively down, lower lug is equipped with the draw-in groove with the looks buckle of logical groove, the joint board can follow the bracing piece and slide.
Through adopting above-mentioned technical scheme, the joint of joint board and draw-in groove can make upper lug and lower lug to closing closely firmly, when needing the installation mutual-inductor body, can press the joint board along the axis direction of bracing piece, makes joint board and draw-in groove separation unblock, makes the last body and the lower body separation of grafting portion one side, is convenient for install central electric conductor fast.
The invention is further configured to: the support rod is provided with a groove along the axis direction of the support rod, the clamping plate is provided with a convex block matched with the groove, the clamping plate is vertically arranged downwards, and the upper end of the clamping plate is provided with an unlocking handle.
Through adopting above-mentioned technical scheme, can guarantee that the joint board can smoothly slide on the bracing piece to guarantee that the joint board can insert logical groove and draw-in groove smoothly, realize joint board and draw-in groove joint and unblock.
The invention is further configured to: the clamping plate lower extreme is equipped with the pothook, the draw-in groove lower extreme is equipped with the chamber that holds the pothook.
Through adopting above-mentioned technical scheme, can guarantee that the pothook card goes into the intracavity that holds in the draw-in groove, realize going up the body and closing with the stability of lower body, during the unblock, push joint board, make the pothook of joint board break away from hold the chamber can.
The invention is further configured to: the second connecting mechanism comprises a fixed block fixed at the bottom end of the lower body, a sliding cavity is arranged in the fixed block, an opening communicated with the sliding cavity is formed in one side of the lower body, the sliding cavity is connected with a sliding block in a sliding mode, the sliding block can slide in the direction of the lower body along the sliding cavity, one end of the sliding block, which is far away from the lower body, is hinged to a clamping plate, and an elastic part is connected between the sliding block and the fixed block.
Through adopting above-mentioned technical scheme, can need not to set up the screw on the mounting panel, only need use buckle board and mounting panel buckle on the second coupling mechanism to be connected, made things convenient for the installation and the dismantlement of mutual-inductor body, improved work efficiency, saved the dismouting time.
The invention is further configured to: the tail end of the buckling plate is provided with a bent hook.
Through adopting above-mentioned technical scheme, can make the couple buckle of mutual-inductor body both sides buckle board in the both sides of mounting panel, make the mutual-inductor body firmly install on the mounting panel, make to dismantle more convenient with the installation.
The invention is further configured to: the upper body and the lower body form a complete ring body.
By adopting the technical scheme, the upper body and the lower body form a complete ring body, so that the electrical performance of the transformer body can be ensured.
In conclusion, the beneficial technical effects of the invention are as follows:
the first connecting mechanism can ensure that the upper body and the lower body are in involution or separation, the performance of the mutual inductor can be ensured during involution, the mutual inductor can be installed in an electrified way during installation of the mutual inductor body, the central conductor does not need to be disassembled, and the installation and the disassembly are very convenient.
According to the invention, the second connecting mechanism is arranged, so that the buckling plate can be buckled on the mounting plate in a self-adaptive manner, the mutual inductor body can be firmly fixed on the mounting plate without arranging a threaded hole on the mounting plate, the current mutual inductor and the mounting plate can be conveniently and rapidly mounted, and the mounting efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial cross-sectional structural schematic of the present invention;
fig. 3 is a schematic view of the present invention in use.
Figure, 1, a transformer body; 11. an upper body; 12. a lower body; 13. a through hole; 2. a first connecting mechanism; 21. a hinge portion; 211. a hinged block; 212. a hinge ring; 213. hinging a shaft; 22. a plug-in part; 221. an upper lug; 222. a supporting seat; 223. a support bar; 2231. a groove; 224. a stop block; 225. a spring; 226. a clamping and connecting plate; 2261. a bump; 2262. a hook; 2263. an unlocking handle; 227. a through groove; 228. a lower lug; 229. a card slot; 2291. an accommodating chamber; 3. a second connecting mechanism; 31. a fixed block; 32. a sliding cavity; 33. a slider; 34. a buckle plate; 341. hooking; 35. an elastic member; 4. a wiring terminal; 5. mounting a plate; 6. and (4) conducting wires.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-3, example: a split type current transformer convenient to mount comprises a transformer body 1, wherein the transformer body 1 comprises an upper body 11 and a lower body 12, the upper body 11 and the lower body 12 are oppositely combined and form a through hole 13 along the lateral direction, the upper body 11 and the lower body 12 are respectively internally composed of semi-annular iron cores, coils are wound on the two iron cores and are connected through a lead 6, the lead 6 is positioned on one side of the upper body 11 and one side of the lower body 12, a first connecting mechanism 2 is arranged between the upper body 11 and the lower body 12, and the upper body 11 and the lower body 12 can be opened or closed through the first connecting mechanism 2; two sides of the bottom end of the lower body 12 are respectively and symmetrically provided with a second connecting mechanism 3 which is clamped with the mounting plate 5; one side of the lower body 12 is provided with a wiring terminal 4 connected with the coil.
The current transformer can enable the separated upper body 11 and the lower body 12 to be firmly installed in a matched mode through the arrangement of the first connecting mechanism 2, and the performance of the current transformer is not affected. When the mutual inductor body 1 is installed, the central conductor does not need to be disassembled in a power-off manner, and the installation efficiency is greatly improved. Set up second connection structure, can convenient and fast ground with 1 joint of mutual-inductor body on mounting panel 5, need not to set up the screw hole on mounting panel 5, make installation, the dismantlement convenient and fast of mutual-inductor body 1, save installation time.
In this embodiment, the first connecting mechanism 2 includes a hinge portion 21 located on one side of the through hole 13 and connecting the upper body 11 and the lower body 12, and the other side of the through hole 13 is provided with a plug portion 22 capable of closing or opening the upper body 11 and the lower body 12; the hinge part 21 comprises a hinge block 211 fixedly connected with one side of the upper body 11, the lower body 12 is provided with a hinge ring 212 matched with the hinge block 211, and the hinge block 211 and the hinge ring 212 are pivoted through a hinge shaft 213; inserting part 22 includes the last lug 221 that the other side of last body 11 extended outward, go up lug 221 top and link firmly supporting seat 222, horizontal support pole 223 is worn to establish by supporting seat 222, bracing piece 223 links firmly with supporting seat 222, spring 225 and joint board 226 are established to the cover respectively from inside to outside on the bracing piece 223 of supporting seat 222 both sides, the both ends of bracing piece 223 link firmly the link stopper 224 respectively, be equipped with the logical groove 227 corresponding with joint board 226 on the last lug 221 of supporting seat 222 both sides respectively, logical groove 227 is worn to establish by joint board 226, lower body 12 opposite side is equipped with the lower lug 228 that closes with last lug 221 mutually, lower lug 228 is equipped with the draw-in groove 229 that buckles mutually with logical groove 227, joint board 226 can slide along bracing piece 223.
Through with last body 11 and lower body 12 design split type, with grafting portion 22 unblock back, rotate body 11 and lower body 12 through articulated shaft 213, make body 11 and body 12 grafting portion 22 one side separation down, be convenient for install central electric conductor in through-hole 13, make mutual-inductor body 1 install convenient and fast more, can carry out the installation of alternating current transformer with electricity, save installation time greatly, improved labor efficiency.
In this embodiment, the clamping connection between the clamping connection plate 226 and the clamping groove 229 enables the upper lug 221 and the lower lug 228 to be closely and firmly abutted, so that the upper body 11 and the lower body 12 are tightly attached, the upper body 11 and the lower body 12 form a complete ring body, the electrical performance of the split current transformer is ensured, the clamping hook 2262 is arranged at the lower end of the clamping connection plate 226, and the accommodating cavity 2291 for accommodating the clamping hook 2262 is arranged at the lower end of the clamping groove 229.
When the mutual inductor body 1 is installed, the clamping plate 226 can be pressed inwards along the axial direction of the support rod 223, so that the clamping plate 226 compresses the spring 225, the clamping plate 226 moves towards the support seat 222 along the support rod 223, the clamping hook 2262 of the clamping block is separated from the accommodating cavity 2291, the upper lug 221 rotates upwards, the clamping plate 226 is separated from the clamping groove 229, the unlocking of the insertion part 22 is realized, the upper body 11 and the lower body 12 on one side of the insertion part 22 are separated, and the central conductor is convenient to install quickly; after the central conductor is installed in the through hole 13, the upper lug 221 is rotated downward, so that the lower end of the clamping plate 226 is inserted into the clamping groove 229, and finally the clamping hook 2262 extends into the accommodating cavity 2291 under the action of the spring 225, so that the clamping plate 226 is connected with the clamping groove 229 in a clamping manner.
In order to ensure that the clamping plate 226 can slide smoothly on the support rod 223, and the clamping plate 226 can be smoothly inserted into the through groove 227 and the clamping groove 229, so as to realize clamping and unlocking of the clamping plate 226 and the clamping groove 229, in this embodiment, the support rod 223 is provided with a groove 2231 along the axial direction thereof, the clamping plate 226 is provided with a convex block 2261 matched with the groove 2231, the clamping plate 226 is vertically and downwardly arranged, the upper end of the clamping plate 226 is provided with an unlocking handle 2263, and the clamping hook 2262 can be separated from the accommodating cavity 2291 by pressing the unlocking handles 2263 on two sides of the support seat 222, so as to conveniently unlock the inserting part 22.
In this embodiment, the second connecting mechanism 3 includes the fixed block 31 fixed at the bottom end of the lower body 12, a sliding cavity 32 is provided in the fixed block 31, an opening communicated with the sliding cavity 32 is provided at one side of the lower body 12, a sliding block 33 is slidably connected in the sliding cavity 32, the sliding block 33 can slide along the direction of the lower body 12 close to or far away from the sliding cavity 32, the sliding block 33 is far away from the hinged buckle plate 34 at one end of the lower body 12, the end of the buckle plate 34 is provided with a bent hook 341, and an elastic part 35 is connected between the sliding block 33 and the fixed block 31.
Need not to set up the screw on mounting panel 5 through setting up second coupling mechanism 3, only need use buckle board 34 on the second coupling mechanism 3 to be connected with the 5 buckles of mounting panel, made things convenient for the installation and the dismantlement of mutual-inductor body 1, improved work efficiency, saved working time.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The split type current transformer convenient to mount is characterized by comprising a transformer body (1), wherein the transformer body (1) comprises an upper body (11) and a lower body (12), the upper body (11) and the lower body (12) are oppositely combined and form a through hole (13) along the lateral direction, the upper body (11) and the lower body (12) are respectively composed of semi-annular iron cores, the two iron cores are wound with coils and connected through a lead (6), the lead (6) is positioned on one side of the upper body and one side of the lower body, and a first connecting mechanism (2) for opening or closing the upper body (11) and the lower body (12) is arranged between the upper body (11) and the lower body; two sides of the bottom end of the lower body (12) are respectively and symmetrically provided with a second connecting mechanism (3) which is clamped with the mounting plate (5); and one side of the lower body (12) is provided with a wiring terminal (4) connected with the coil.
2. The split type current transformer convenient to install as claimed in claim 1, wherein the first connecting mechanism (2) comprises a hinge portion (21) which is located at one side of the through hole (13) and connects the upper body (11) and the lower body (12), and the other side of the through hole (13) is provided with a plug portion (22) which can close or open the upper body (11) and the lower body (12).
3. The split type current transformer convenient to install as claimed in claim 2, wherein the hinge part (21) comprises a hinge block (211) fixedly connected with one side of the upper body (11), the lower body (12) is provided with a hinge ring (212) matched with the hinge block (211), and the hinge block (211) and the hinge ring (212) are pivoted through a hinge shaft (213); the inserting part (22) comprises an upper lug (221) extending outwards from the other side of the upper body (11), a support seat (222) is fixedly connected above the upper lug (221), a horizontal support rod (223) penetrates through the support seat (222), the support rod (223) is fixedly connected with the support seat (222), a spring (225) and a clamping plate (226) are respectively sleeved on the support rod (223) at two sides of the support seat (222) from inside to outside, stop blocks (224) are respectively fixedly connected at two ends of the support rod (223), through grooves (227) corresponding to the clamping plate (226) are respectively arranged on the upper lugs (221) at two sides of the support seat (222), the clamping plate (226) penetrates through the through grooves (227), a lower lug (228) opposite to the upper lug (221) is arranged at the other side of the lower body (12), and a clamping groove (229) clamped with the through groove (227) is arranged on the lower lug (228), the clamping plate (226) can slide along the support rod (223).
4. The split type current transformer convenient to install as claimed in claim 3, wherein the supporting rod (223) is provided with a groove (2231) along the axial direction thereof, the engaging plate (226) is provided with a projection (2261) matched with the groove (2231), the engaging plate (226) is vertically arranged downwards, and the upper end of the engaging plate (226) is provided with an unlocking handle (2263).
5. The split type current transformer convenient to install as claimed in claim 1, wherein the lower end of the clamping plate (226) is provided with a clamping hook (2262), and the lower end of the clamping slot (229) is provided with a receiving cavity (2291) for receiving the clamping hook (2262).
6. The split type current transformer convenient to mount as claimed in claim 1, wherein the second connecting mechanism (3) comprises a fixing block (31) fixed at the bottom end of the lower body (12), a sliding cavity (32) is arranged in the fixing block (31), an opening communicated with the sliding cavity (32) is formed in one side far away from the lower body (12), a sliding block (33) is connected in the sliding cavity (32) in a sliding manner, the sliding block (33) can slide along the direction that the sliding cavity (32) is close to or far away from the lower body (12), a clamping plate (34) is hinged to one end, far away from the lower body (12), of the sliding block (33), and an elastic part (35) is connected between the sliding block (33) and the fixing block (31).
7. The split type current transformer convenient to install as claimed in claim 6, wherein the end of the snap-in plate (34) is provided with a bent hook (341).
8. The split type current transformer convenient to install as claimed in claim 1, wherein the upper body (11) and the lower body (12) form a complete ring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010384127.3A CN111613427A (en) | 2020-05-09 | 2020-05-09 | Split type current transformer convenient to installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010384127.3A CN111613427A (en) | 2020-05-09 | 2020-05-09 | Split type current transformer convenient to installation |
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| Publication Number | Publication Date |
|---|---|
| CN111613427A true CN111613427A (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010384127.3A Pending CN111613427A (en) | 2020-05-09 | 2020-05-09 | Split type current transformer convenient to installation |
Country Status (1)
| Country | Link |
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| CN (1) | CN111613427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542303A (en) * | 2020-12-08 | 2021-03-23 | 安徽华能集团电器有限公司 | Side-folded voltage transformer convenient to overhaul |
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|---|---|---|---|---|
| KR200479222Y1 (en) * | 2015-02-06 | 2016-01-05 | 김용현 | Split Current Transformer |
| EP3190597A2 (en) * | 2016-01-07 | 2017-07-12 | Massimo Veggian | Apparatus and method for transforming alternating electrical energy |
| CN207199413U (en) * | 2017-08-07 | 2018-04-06 | 日照致远电气有限公司 | A kind of fixing device for pouring into a mould current transformer |
| CN207217276U (en) * | 2017-10-16 | 2018-04-10 | 国家电网公司 | A kind of open type high voltage induction electricity getting device |
| CN209103946U (en) * | 2018-11-30 | 2019-07-12 | 山东天健电气有限公司 | A kind of plug type current transformer |
| CN209282023U (en) * | 2019-01-18 | 2019-08-20 | 浙江中盾电子有限公司 | A kind of open type current transformer |
| CN110415955A (en) * | 2019-06-12 | 2019-11-05 | 江阴市星火电子科技有限公司 | Residual current transformer and its assembly technology |
| CN210156215U (en) * | 2019-09-03 | 2020-03-17 | 厦门振泰成科技有限公司 | Open-close type current transformer |
| CN210245232U (en) * | 2019-05-25 | 2020-04-03 | 保定市恒光电气机械有限公司 | Accurate current transformer |
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2020
- 2020-05-09 CN CN202010384127.3A patent/CN111613427A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200479222Y1 (en) * | 2015-02-06 | 2016-01-05 | 김용현 | Split Current Transformer |
| EP3190597A2 (en) * | 2016-01-07 | 2017-07-12 | Massimo Veggian | Apparatus and method for transforming alternating electrical energy |
| CN207199413U (en) * | 2017-08-07 | 2018-04-06 | 日照致远电气有限公司 | A kind of fixing device for pouring into a mould current transformer |
| CN207217276U (en) * | 2017-10-16 | 2018-04-10 | 国家电网公司 | A kind of open type high voltage induction electricity getting device |
| CN209103946U (en) * | 2018-11-30 | 2019-07-12 | 山东天健电气有限公司 | A kind of plug type current transformer |
| CN209282023U (en) * | 2019-01-18 | 2019-08-20 | 浙江中盾电子有限公司 | A kind of open type current transformer |
| CN210245232U (en) * | 2019-05-25 | 2020-04-03 | 保定市恒光电气机械有限公司 | Accurate current transformer |
| CN110415955A (en) * | 2019-06-12 | 2019-11-05 | 江阴市星火电子科技有限公司 | Residual current transformer and its assembly technology |
| CN210156215U (en) * | 2019-09-03 | 2020-03-17 | 厦门振泰成科技有限公司 | Open-close type current transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542303A (en) * | 2020-12-08 | 2021-03-23 | 安徽华能集团电器有限公司 | Side-folded voltage transformer convenient to overhaul |
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Application publication date: 20200901 |
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