CN218102563U - Overvoltage protector with cut-off device - Google Patents
Overvoltage protector with cut-off device Download PDFInfo
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- CN218102563U CN218102563U CN202222110918.4U CN202222110918U CN218102563U CN 218102563 U CN218102563 U CN 218102563U CN 202222110918 U CN202222110918 U CN 202222110918U CN 218102563 U CN218102563 U CN 218102563U
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Abstract
The utility model provides a take over voltage protector of breaker mainly solves the overvoltage protector that exists among the prior art and because of reasons such as transshipping deterioration back that became invalid, leads to devices such as C-GIS cubical switchboard, inflatable looped netowrk cabinet to take place ground fault easily, when serious, can cause the power frequency overvoltage of devices such as C-GIS cubical switchboard, inflatable looped netowrk cabinet, threatens the technical problem of the interior electric device insulation safety of devices such as C-GIS cubical switchboard, inflatable looped netowrk cabinet. The resistor comprises a rubber jacket, a resistor disc, a first electrode block, a second electrode block, a first conducting rod, a contact and a second conducting rod; and the disconnecting device is arranged in the rubber jacket and is positioned between the resistor disc and the second electrode block, or the disconnecting device is arranged in the rubber jacket and is positioned between the contact and the first electrode block, when the overvoltage protector has long-time overcurrent, the disconnecting device automatically disconnects a current loop of the overvoltage protector, and the insulation safety of electrical equipment in the devices such as the C-GIS switch cabinet, the inflatable ring main unit and the like is ensured.
Description
Technical Field
The utility model relates to an overvoltage protection device, concretely relates to take disconnecting gear's overvoltage protection device.
Background
The overvoltage protector is a device for protecting the insulation safety of electrical equipment in devices such as a C-GIS switch cabinet and an inflatable ring main unit, and is usually matched with the devices such as the GIS switch cabinet and the inflatable ring main unit for installation, so that the space can be saved, and the installation is convenient.
The existing overvoltage protector is easy to cause the grounding fault of devices such as a C-GIS switch cabinet, an inflatable ring main unit and the like after being degraded and failed due to overload and the like, and can cause power frequency overvoltage of the devices such as the C-GIS switch cabinet, the inflatable ring main unit and the like when the grounding fault is serious, so that the insulation safety of electrical equipment in the devices such as the C-GIS switch cabinet, the inflatable ring main unit and the like is further threatened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the prior overvoltage protector easily causes the devices such as the C-GIS switch cabinet and the inflatable ring main unit to have ground faults after the deterioration failure caused by reasons such as overload, and when the grounding faults are serious, the overvoltage protection device can cause the power frequency overvoltage of the devices such as the C-GIS switch cabinet and the inflatable ring main unit, further threatens the technical problem of the insulation safety of the electrical equipment in the devices such as the C-GIS switch cabinet and the inflatable ring main unit, and provides the overvoltage protector with a disconnecting device.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
an overvoltage protector with a disconnecting device comprises a rubber outer sleeve, a resistor disc, a first electrode block, a second electrode block, a first conducting rod, a contact and a second conducting rod;
defining the end part of the rubber outer sleeve close to the high-voltage end of the overvoltage protector as a connecting end, and defining the end part close to the low-voltage end of the overvoltage protector as a grounding end;
the contact is arranged at the connecting end, the first conducting rod is inserted into the rubber jacket, and one end of the first conducting rod is connected with the contact;
the rubber outer sleeve is internally provided with an installation cavity, the resistor disc is arranged in the installation cavity, the first electrode block is arranged in the installation cavity close to one side of the connecting end, and the second electrode block is arranged in the installation cavity close to one side of the grounding end;
one side of the first electrode block is connected with the resistor disc, and the other side of the first electrode block is connected with the other end of the first conducting rod;
one end of the second conducting rod is connected with one side of the second electrode block, and the other end of the second conducting rod is grounded;
it is characterized in that:
the disconnecting device is arranged between the resistor disc and the second electrode block and is used for disconnecting a current loop of the overvoltage protector when long-time high-amplitude current appears in the overvoltage protector;
the disconnecting device comprises an insulating cylinder arranged on one side of the mounting cavity close to the grounding end, a third electrode block arranged in the insulating cylinder, a disconnecting element and a soft conductor;
one side of the third electrode block is connected with the resistance card, and the other side of the third electrode block is connected with the separation element;
one end of the soft conductor is connected with the separation element, and the other end of the soft conductor is connected with the second electrode block;
and a gap is formed between the separation element and the second electrode block along the axial direction of the rubber outer sleeve, and the distance of the gap is greater than the distance required by the separation element to be completely separated from the third electrode block.
Furthermore, a shielding outer sleeve is sleeved on the rubber outer sleeve;
a first flange is sleeved on the peripheral surface of the rubber outer sleeve close to the connecting end and connected with the shielding outer sleeve;
the grounding end of the rubber outer sleeve is connected with a second flange, and the second flange is connected with the inner wall of the shielding outer sleeve and connected with the grounding end of the rubber outer sleeve.
Furthermore, all seted up the observation window on shielding overcoat, rubber overcoat and the insulating cylinder and the second electrode piece be close to the corresponding position of link one side for whether observe to break away from the component and fall on the second electrode piece.
Further, the release element is a thermal fuse type release, a thermal explosion type release, a fuse or a fuse.
Further, the insulating cylinder is filled with dry air, nitrogen or SF6 gas.
In addition, the utility model also provides an overvoltage protector with a disconnecting device, which comprises a rubber jacket, a resistance card, a first electrode block, a second electrode block, a first conducting rod, a contact and a second conducting rod;
defining the end part of the rubber outer sleeve close to the high-voltage end of the overvoltage protector as a connecting end, and defining the end part close to the low-voltage end of the overvoltage protector as a grounding end;
the contact is arranged at the connecting end, and the first conducting rod is inserted into and penetrates through the contact;
the rubber outer sleeve is internally provided with a mounting cavity, the mounting cavity comprises a first cavity and a second cavity which are sequentially arranged from the connecting end to the grounding end, and the diameter of the first cavity is smaller than that of the second cavity;
the resistor disc is arranged in the second cavity, and the peripheral surface of the resistor disc is matched with the second cavity; one side of the first electrode block is connected with one side of the resistor disc close to the connecting end, and one side of the second electrode block is connected with one side of the resistor disc close to the grounding end;
one end of the second conducting rod is connected with the other side of the second electrode block, and the other end of the second conducting rod is grounded;
it is characterized in that:
the disconnecting device is arranged between the contact and the first electrode block and is used for disconnecting a current loop of the overvoltage protector when long-time high-amplitude current appears in the overvoltage protector;
the disconnecting device comprises an insulating cylinder arranged in the first cavity, a third electrode block arranged in the insulating cylinder, a disconnecting element and a soft conductor;
one side of the third electrode block is connected with the other end of the first conducting rod, and the other side of the third electrode block is connected with a separation element;
one end of the soft conductor is connected with the separation element, and the other end of the soft conductor is connected with the other side of the first electrode block;
and a gap is formed between the separation element and the first electrode block along the axial direction of the rubber outer sleeve, and the distance of the gap is greater than the distance required by the separation element to be completely separated from the third electrode block.
Furthermore, a shielding outer sleeve is sleeved on the rubber outer sleeve;
a first flange is sleeved on the peripheral surface of the rubber outer sleeve close to the connecting end and connected with the shielding outer sleeve;
and the grounding end of the rubber outer sleeve is connected with a second flange, and the second flange is connected with the inner wall of the shielding outer sleeve.
Further, the release element is a thermal fuse type release, a thermal explosion type release, a fuse or a fuse.
Further, the insulating cylinder is filled with dry air, nitrogen or SF6 gas.
Compared with the prior art, the beneficial effects of the utility model are that:
through setting up the disconnecting means in overvoltage protector, when meetting long-time heavy current among overvoltage protector, the component that breaks away from that sets up can break away from in time or break off under the heat that the resistance card produced, falls under the action of gravity simultaneously for be in the state of opening circuit between resistance card and the second electrode piece, thus block fault current, prevent that the resistance card from further generating heat and puncturing, and form overvoltage protector ground fault, ensured the insulation safety of electrical equipment in equipment such as C-GIS cubical switchboard, inflatable looped netowrk cabinet.
Drawings
Fig. 1 is a schematic structural view of an embodiment 1 of the overvoltage protection device with a disconnecting device according to the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the overvoltage protector with a disconnecting device of the present invention.
In the figure, 1-rubber jacket, 2-resistor disc, 3-first electrode block, 4-second electrode block, 5-first conducting rod, 6-contact, 7-second conducting rod, 8-disconnecting device, 81-insulating cylinder, 82-third electrode block, 83-disconnecting element, 84-flexible conductor, 9-shielding jacket, 10-first flange, 11-second flange, 12-observation window.
Detailed Description
To make the objects, advantages and features of the present invention clearer, the overvoltage protection device with a disconnecting device of the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following detailed description.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1:
as shown in fig. 1, the overvoltage protector with a disconnecting device of the present invention is specifically a direct-insertion type lightning arrester with a disconnecting device in this embodiment, and includes a rubber jacket 1, a resistor disc 2, a first electrode block 3, a second electrode block 4, a first conducting rod 5, a contact 6, and a second conducting rod 7; defining the end part of the rubber outer sleeve 1 close to the high-voltage end of the lightning arrester as a connecting end, and defining the end part close to the low-voltage end of the lightning arrester as a grounding end; the outer peripheral surface of the rubber outer sleeve 1 comprises a first connecting section, a second connecting section, a third connecting section and a fourth connecting section which are sequentially connected along the connecting end to the grounding end, wherein the outer diameter of the first connecting section is gradually increased along the connecting end to the grounding end, the joint of the first connecting section and the second connecting section is set to be a round angle, the third connecting section is in a frustum shape, the small end is connected with the second connecting section, the large end is connected with the fourth connecting section, the fourth connecting section of the rubber outer sleeve 1 can be sleeved with a shielding outer sleeve 9, the shielding outer sleeve 9 can be made of metal materials or non-metal materials, the shielding outer sleeve 9 does not need to be sleeved according to specific requirements, the second connecting section and the third connecting section of the rubber outer sleeve 1 are sleeved with first flanges 10, and the first flanges 10 are connected with the shielding outer sleeve 9; the grounding end of the rubber outer sleeve 1 is connected with a second flange 11, and the second flange 11 is connected with the inner wall of the shielding outer sleeve 9; the contact 6 is arranged at the connecting end of the rubber outer sleeve 1, the first conducting rod 5 is a long straight rod and is inserted into the rubber outer sleeve 1, and one end of the first conducting rod 5 is connected with the contact 6; the rubber outer sleeve 1 is internally provided with an installation cavity which is a straight cylindrical cavity, the resistor disc 2 is arranged in the installation cavity, the peripheral surface of the resistor disc 2 is matched with the installation cavity, the resistor disc 2 is arranged on one side, close to the connecting end, of the installation cavity, the length of the resistor disc 2 is smaller than that of the installation cavity along the axial direction of the rubber outer sleeve, and the rubber outer sleeve is used for providing enough installation space for a disconnecting device to be described later, the arranged resistor disc 2 can generate a large amount of heat when the current flowing through the lightning arrester is large and the duration time is long, and the generated heat is small when the current is small or the current is large and the duration time is short, the first electrode block 3 is arranged on one side, close to the connecting end, of the installation cavity, one side of the first electrode block 3 is connected with the resistor disc 2, the other side of the first conducting rod 5 is connected with the other end of the first conducting rod, and the second electrode block 4 is arranged on one side, close to the grounding end, in the installation cavity; one end of the second conducting rod 7 is connected with one side of the second electrode block 4, and the other end is grounded.
The lightning arrester also comprises a disconnecting device 8 arranged in the mounting cavity and used for disconnecting a grounding line of the lightning arrester when long-time high-amplitude voltage occurs in the lightning arrester; the disconnecting device 8 is arranged between the resistance card 2 and the second electrode block 4, and the disconnecting device 8 comprises an insulating cylinder 81 arranged on one side of the installation cavity close to the grounding end, a third electrode block 82 arranged in the insulating cylinder 81, a disengaging element 83 and a soft conductor 84; the insulating cylinder 81 may be filled with dry air for insulation to prevent the voltage from directly breaking through the gas in the insulating cylinder 81, thereby causing the failure of the disconnecting device 8, and of course, the insulating cylinder may be filled with nitrogen gas, SF6 gas, etc.; the releasing element 83 may be a thermal fuse type releasing device or a thermal explosion type releasing device, wherein the thermal fuse type releasing device is preferred in this embodiment because the thermal explosion type releasing device generates charged dust after being exploded, and of course, a fuse wire or a fuse, etc. meeting the operation and protection requirements of the lightning arrester may be selected by those skilled in the art; the disengaging element 83 is mounted on one side, close to the ground end, of the third electrode block 82, a gap is formed between the disengaging element 83 and the second electrode block 4 along the axial direction of the rubber casing 1, the distance of the gap is larger than the distance required by the disengaging element 83 to be completely separated from the third electrode block 82, one end of the flexible conductor 84 is connected with the disengaging element 83, the other end of the flexible conductor 84 is connected with the second electrode block 4 through a binding post, the flexible conductor 84 is made of a conductive material made of soft materials such as cables, and the disengaging element 83 can fall onto the second electrode block 4 under the action of gravity after the disengaging element 83 is disengaged; normally, the leakage current between the disconnecting device 8 and the resistance chip 2 is small, the disconnecting device 8 does not act, when the lightning arrester is subjected to a large current in a short time, the heat generated by the resistance chip 2 is small, the disconnecting condition of the disconnecting element 83 is not reached, the disconnecting device 8 does not act, when a large current (namely, fault current) appears on the lightning arrester for a long time, the resistance chip 2 generates heat seriously, when the heat generated by the resistance chip 2 reaches the disconnecting condition of the disconnecting element 83, the disconnecting element 83 can be disconnected or disconnected in time and falls under the action of gravity, so that a broken circuit is formed between the resistance chip 2 and the second electrode block 4, the fault current is blocked, the resistance chip 2 is prevented from further heating and breakdown, and the ground fault is caused.
In order to facilitate the observation of the specific falling condition of the separation element 83, the observation windows 12 are respectively arranged on the shielding outer sleeve 9, the rubber outer sleeve 1 and the insulating cylinder 81 at the corresponding positions on one side of the second electrode block 4 close to the connecting end, and when the separation element 83 falls onto the second electrode block 4, the falling condition of the separation element 83 can be directly observed, so that the observation is convenient.
Example 2:
as shown in fig. 2, the overvoltage protection device with a disconnecting device according to this embodiment is specifically an in-line arrester with a disconnecting device, and includes a rubber housing 1, a resistor disc 2, a first electrode block 3, a second electrode block 4, a first conductive rod 5, a contact 6, and a second conductive rod 7; defining two end parts of the rubber outer sleeve 1 as a connecting end and a grounding end respectively; the outer peripheral surface of the rubber outer sleeve 1 comprises a first connecting section, a second connecting section, a third connecting section and a fourth connecting section which are sequentially connected along the connecting end to the grounding end, wherein the outer diameter of the first connecting section is gradually increased along the connecting end to the grounding end, the joint of the first connecting section and the second connecting section is set to be a round angle, the third connecting section is in a frustum shape, the small end is connected with the second connecting section, the large end is connected with the fourth connecting section, the fourth connecting section of the rubber outer sleeve 1 can be sleeved with a shielding outer sleeve 9, the shielding outer sleeve 9 can be made of metal materials or non-metal materials, the shielding outer sleeve 9 does not need to be sleeved according to specific requirements, the second connecting section and the third connecting section of the rubber outer sleeve 1 are sleeved with a first flange 10, and the first flange 10 is connected with the shielding outer sleeve 9; the grounding end of the rubber outer sleeve 1 is connected with a second flange 11, and the second flange 11 is connected with the inner wall of the shielding outer sleeve 9; the contact 6 is arranged at the connecting end of the rubber sleeve 1, and the first conducting rod 5 is inserted and penetrates through the contact 6; a mounting cavity is arranged in the rubber outer sleeve 1, the mounting cavity comprises a first cavity and a second cavity which are sequentially arranged from the connecting end to the grounding end, and the diameter of the first cavity is smaller than that of the second cavity; the resistance card 2 is arranged in the second cavity, and the peripheral surface of the resistance card is matched with the second cavity; the first electrode block 3 is arranged on one side, close to the connecting end, in the second cavity, one side of the first electrode block 3 is connected with the resistance card 2, the resistance card 2 can generate a large amount of heat when the current flowing through the lightning arrester is large and the duration is long, the generated heat is small when the current is small or the current is large and the duration is short, and the second electrode block 4 is arranged on one side, close to the grounding end, in the second cavity; one end of the second conducting rod 7 is connected with one side of the second electrode block 4, and the other end is grounded;
the disconnecting device 8 is arranged in the first cavity and is used for disconnecting a grounding circuit of the lightning arrester when long-time high-amplitude voltage occurs in the lightning arrester; the disconnecting device 8 is arranged between the first electrode block 3 and the contact 6, and the disconnecting device 8 comprises an insulating cylinder 81 arranged in the first cavity, a third electrode block 82 arranged in the insulating cylinder 81, a disengaging element 83 and a flexible conductor 84; the insulating cylinder 81 may be filled with dry air for insulation to prevent the voltage from directly breaking through the gas in the insulating cylinder 81, thereby causing the failure of the disconnecting device 8, and of course, the insulating cylinder may be filled with nitrogen gas, SF6 gas, etc.; the release element 83 is a thermal explosion type release, and a fuse wire or a fuse and the like meeting the operation and protection requirements of the lightning arrester can be selected by the technical personnel in the field; the disengaging element 83 is installed on one side of the third electrode block 82 close to the ground end, and one end of the flexible conductor 84 is connected with the disengaging element 83; the peripheral surface of the insulating cylinder 81 is matched with the first cavity, the other end of the first conductive rod 5 is connected with the other side of the third electrode block 82, the other end of the soft conductor 84 is connected with the other side of the first electrode block 3, the soft conductor 84 is made of a soft conductive material such as a cable, and after the disengaging element 83 is disengaged, the disengaging element 83 falls onto the first electrode block 3 under the action of gravity, and the second electrode block 4 is connected with the resistance sheet 2; a gap is reserved between the separation element 83 and the first electrode block 3 along the axial direction of the rubber outer sleeve 1, and the distance of the gap is larger than the distance required by completely separating the separation element 83 from the third electrode block 82; normally, the leakage current between the disconnecting device 8 and the resistor disc 2 is small, the disconnecting device 8 does not act, when a large current occurs on the arrester for a short time, the heating element in the disconnecting element 83 generates less heat, and the disconnecting condition of the disconnecting element 83 is not met, the disconnecting device 8 also does not act, when a large current (namely fault current) occurs on the arrester for a long time, the heating element in the disconnecting element 83 generates heat, and when the heat reaches the disconnecting condition of the disconnecting element 83, the disconnecting element 83 can timely disconnect or disconnect and falls under the action of gravity, so that an open circuit is formed between the third electrode block 82 and the first electrode block 3, the fault current is blocked, and the resistor disc 2 is prevented from further heating and breakdown, and therefore, the ground fault is caused.
It should be noted that, in other embodiments of the present invention, a person skilled in the art can select the type of the overvoltage protector according to actual conditions, and a person skilled in the art can also select an elbow type arrester, a front plug type arrester or a rear plug type arrester in the prior art for the direct plug type arrester provided in this embodiment; the breaking device 8 is arranged between the resistive sheet 2 and the second electrode block 4 or between the contact 6 and the first electrode block 3.
Claims (9)
1. An overvoltage protector with a disconnecting device comprises a rubber outer sleeve (1), a resistor disc (2), a first electrode block (3), a second electrode block (4), a first conducting rod (5), a contact (6) and a second conducting rod (7);
defining the end part of the rubber outer sleeve (1) close to the high-voltage end of the overvoltage protector as a connecting end, and defining the end part close to the low-voltage end of the overvoltage protector as a grounding end;
the contact (6) is arranged at the connecting end, the first conducting rod (5) is inserted into the rubber outer sleeve (1), and one end of the first conducting rod (5) is connected with the contact (6);
the rubber outer sleeve (1) is internally provided with an installation cavity, the resistor disc (2) is arranged in the installation cavity, the first electrode block (3) is arranged on one side, close to the connecting end, in the installation cavity, and the second electrode block (4) is arranged on one side, close to the grounding end, in the installation cavity;
one side of the first electrode block (3) is connected with the resistor disc (2), and the other side of the first electrode block is connected with the other end of the first conducting rod (5);
one end of the second conducting rod (7) is connected with one side of the second electrode block (4), and the other end of the second conducting rod is grounded;
the method is characterized in that:
a disconnecting device (8) is arranged between the resistor disc (2) and the second electrode block (4), and the disconnecting device (8) comprises an insulating cylinder (81) arranged on one side of the mounting cavity close to the grounding end, a third electrode block (82) arranged in the insulating cylinder (81), a disengaging element (83) and a soft conductor (84);
one side of the third electrode block (82) is connected with the resistance chip (2), and the other side of the third electrode block is connected with the separation element (83);
one end of the soft conductor (84) is connected with the separation element (83), and the other end of the soft conductor is connected with the second electrode block (4);
the separation element (83) and the second electrode block (4) have a gap along the axial direction of the rubber outer sleeve (1), and the distance of the gap is larger than the distance required by the separation element (83) and the third electrode block (82) to be completely separated.
2. An overvoltage protector with disconnect device as set forth in claim 1 wherein: the rubber jacket (1) is sleeved with a shielding jacket (9);
a first flange (10) is sleeved on the outer peripheral surface of the rubber outer sleeve (1) close to the connecting end, and the first flange (10) is connected with the shielding outer sleeve (9);
the grounding end of the rubber outer sleeve (1) is connected with a second flange (11), and the second flange (11) is connected with the inner wall of the shielding outer sleeve (9).
3. An overvoltage protection device with a disconnect device as set forth in claim 2 wherein: and the shielding outer sleeve (9), the rubber outer sleeve (1) and the insulating cylinder (81) are provided with observation windows (12) at corresponding positions on one side, close to the connecting end, of the second electrode block (4).
4. An overvoltage protection device with disconnect device as claimed in any one of claims 1 to 3 wherein: the release element (83) is a thermal fuse type release, a thermal explosion type release, a fuse or a fuse.
5. An overvoltage protection device with a disconnect device as set forth in claim 4 wherein: and dry air, nitrogen or SF6 gas is filled in the insulating cylinder (81).
6. An overvoltage protector with a disconnecting device comprises a rubber outer sleeve (1), a resistor disc (2), a first electrode block (3), a second electrode block (4), a first conducting rod (5), a contact (6) and a second conducting rod (7);
defining the end part of the rubber outer sleeve (1) close to the high-voltage end of the overvoltage protector as a connecting end, and defining the end part close to the low-voltage end of the overvoltage protector as a grounding end;
the contact (6) is arranged at the connecting end, and the first conducting rod (5) is inserted and penetrates through the contact (6);
the rubber outer sleeve (1) is internally provided with a mounting cavity, the mounting cavity comprises a first cavity and a second cavity which are sequentially arranged from the connecting end to the grounding end, and the diameter of the first cavity is smaller than that of the second cavity;
the resistance card (2) is arranged in the second cavity; one side of the first electrode block (3) is connected with one side, close to the connecting end, of the resistor disc (2), and one side of the second electrode block (4) is connected with one side, close to the grounding end, of the resistor disc (2);
one end of the second conducting rod (7) is connected with the other side of the second electrode block (4), and the other end of the second conducting rod is grounded;
the method is characterized in that:
a disconnecting device (8) is arranged between the contact (6) and the first electrode block (3), and the disconnecting device (8) comprises an insulating cylinder (81) arranged in the first cavity, a third electrode block (82) arranged in the insulating cylinder (81), a disengaging element (83) and a soft conductor (84);
one side of the third electrode block (82) is connected with the end part of the first conducting rod (5), and the other side of the third electrode block is connected with a disengaging element (83);
one end of the soft conductor (84) is connected with the disengaging element (83), and the other end of the soft conductor is connected with the other side of the first electrode block (3);
a gap is formed between the separation element (83) and the first electrode block (3) along the axial direction of the rubber outer sleeve (1), and the distance of the gap is larger than the distance required by the separation element (83) and the third electrode block (82) to be completely separated.
7. An overvoltage protection device with a disconnect device as set forth in claim 6 wherein: the rubber jacket (1) is sleeved with a shielding jacket (9);
a first flange (10) is sleeved on the outer peripheral surface of the rubber outer sleeve (1) close to the connecting end, and the first flange (10) is connected with the shielding outer sleeve (9);
the grounding end of the rubber outer sleeve (1) is connected with a second flange (11), and the second flange (11) is connected with the inner wall of the shielding outer sleeve (9).
8. An overvoltage protection device with a disconnect device as set forth in claim 7 wherein: the release element (83) is a thermal fuse type release, a thermal explosion type release, a fuse or a fuse.
9. An overvoltage protector with trip unit according to any one of claims 7 to 8 wherein: and dry air, nitrogen or SF6 gas is filled in the insulating cylinder (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222110918.4U CN218102563U (en) | 2022-08-11 | 2022-08-11 | Overvoltage protector with cut-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222110918.4U CN218102563U (en) | 2022-08-11 | 2022-08-11 | Overvoltage protector with cut-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218102563U true CN218102563U (en) | 2022-12-20 |
Family
ID=84445133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222110918.4U Active CN218102563U (en) | 2022-08-11 | 2022-08-11 | Overvoltage protector with cut-off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218102563U (en) |
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2022
- 2022-08-11 CN CN202222110918.4U patent/CN218102563U/en active Active
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